sx8723c Semtech Corporation, sx8723c Datasheet

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... ADVANCED COMMUNICATIONS & SENSING DESCRIPTION The SX8723C is a data acquisition system based on Semtech's low power ZoomingADC™ technology. It directly connects most types of miniature sensors with a general purpose microcontroller. With 2 differential inputs, it can adapt to multiple sensor systems. Its digital outputs are used to bias or reset the sensing elements ...

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... Continuous-Time vs. On-Request Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 7.7.8 Output Code Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 7.7.9 Power Saving Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 8 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 8.1 Power Reduction 8.2 Gain Configuration Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 9 I2C Interface 9.1 General Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 9.2 Other Slave Address Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Revision 1.01 January 2011 © Semtech . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Page 2 SX8723C ZoomingADC for sensing data acquisition www.semtech.com/products/ DATASHEET Page ...

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... ECHANICAL 14 PCB Layout Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 15 How to Evaluate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 16 Package Outline Drawing: 4x4MLPD-W12-EP1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 17 Land Pattern Drawing: 4x4MLPD-W12-EP1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 18 Tape and Reel Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Revision 1.01 January 2011 © Semtech ZoomingADC for sensing data acquisition Page 3 SX8723C DATASHEET Page www.semtech.com/products/ ...

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... Latchup Revision 1.01 January 2011 © Semtech ZoomingADC for sensing data acquisition Symbol Condition V BATT T STORE T BIAS V All inputs INABS T PKG ESD Human Body Model ESD HBM Page 4 SX8723C DATASHEET Min Max Units V - 0.3 6 -55 150 °C -40 140 ° 300 V + 300 mV SS ...

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... Smax @25° < < Page 5 SX8723C DATASHEET = 250 kHz, PGA3 on with Gain = 1, S > 4.2V, Charge Pump is forced off. BATT Min Typ Max 2.4 5.5 -40 125 Min Typ Max 250 350 700 900 1000 1350 150 ...

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... Table 13, page 23) Gain ≥ 1 Step = 0.2 V/V GD OFF2 (see Table 12, page 23) Step = 1/12 V/V GD OFF3 (see Table 13, page 23) Note 2 Gain = 1. Note 3 Gain = 10. Note 3 Gain = 1. Note 3 PGA1. Note 4 PGA2. Note 4 PGA3. Note 4 Page 6 SX8723C DATASHEET Min Typ Max 0.25 -100 100 1.19 1.22 1.25 -1.5 +1.5 1 Min Typ Max -2.42 +2.42 -24.2 +24.2 -2.42 +2.42 1/12 1000 ...

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... BATT V = 5.5V/3.3V. Note 15 BATT V = 5.5V/3.3V. Note 16 BATT V = 5.5V/3.3V. Note 17 BATT = 250 kHz, 4 for The effective output noise is reduced by the over-sampling ratio S ). OSR can be set between 8 and 1024, in powers ELCONV Page 7 SX8723C DATASHEET Min Typ Max 6 16 ± 0.15 ± 1 ± 0.6 ± 1.5 ± 0.5 ± 0.5 78 ...

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... Bias currents in PGAs and ADC set to 1/4 of nominal values, i.e. IbAmpPga[1:0] = '00' , IbAmpAdc[1:0] = '00' . Revision 1.01 January 2011 © Semtech ZoomingADC for sensing data acquisition = (N (OSR + OSR can be set between 8 and 1024, in powers ELCONV S Page 8 SX8723C DATASHEET can be set to 1, ELCONV www.semtech.com/products/ ...

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... January 2011 © Semtech ZoomingADC for sensing data acquisition Symbol Comment/Condition t Note 1 IRQ t START t RCEN Self RC disabling calibration RC stop Figure 1. Power-On-Reset waveform Page 9 SX8723C DATASHEET Min Typ Max 1 800 450 I2C com WAKE-UP SLEEP SEQUENCE RC enabling t RCEN www.semtech.com/products/ Unit 1/fs μs ...

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... Note 4 t 4.7 RSU t 4.0 PSU t 4 100 SUP 0.1V nL BATT V 0.2V nH BATT duration . This is the default mode at startup. The timeout can be disabled by SCLTO Page 10 SX8723C FAST-MODE Max Min Typ Max 100 0 35 1.3 0.6 0.6 100 Note 3 3.45 0 0.6 0.6 1.3 100 400 0.1V BATT 0.2V BATT www.semtech.com/products/ DATASHEET Unit ...

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... Figure 2. Definition of timing for F/S-mode on the I2C-bus. Revision 1.01 January 2011 © Semtech SCH 2 MSB LSB t Start Page 11 SX8723C ZoomingADC for sensing data acquisition RSU MSB ACK t t SUP R F RepStart www.semtech.com/products/ ...

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... Lot numbers starting with the ‘E’ character are used for Engineering samples Revision 1.01 January 2011 © Semtech ZoomingADC for sensing data acquisition AC4 1 AC5 2 VBATT 3 SX8723C (Top view) VSS 4 READY 8723C YYWW XXXXX XXXXX Page 12 SX8723C DATASHEET 12 AC3 11 AC2 10 VPUMP 9 SCL 8 SDA 7 D0 www.semtech.com/products/ ...

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... I2C clock 400KHz. Charge pump output. Raises analog switch supply above V too low. Recommended range for capacitor is 1nF to 10 nF. Connect the capacitor to ground. Differential sensor input in conjunction with AC3 Differential sensor input in conjunction with AC2 Page 13 SX8723C DATASHEET ) ) if V supply is BATT BATT www ...

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... ADVANCED COMMUNICATIONS & SENSING 6 General Description The SX8723C is a complete low-power acquisition path with programmable gain, acquisition speed and resolution. 6.1 Bloc diagram SX8723C V REF AC2 AC3 AC4 AC5 D0 (1) D1 D0: digital IO, Vref output or I2C address select (1) D1: digital IO, Vref input or I2C address select 6 ...

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... January 2011 © Semtech ZoomingADC for sensing data acquisition Figure 6, Figure 7, Figure 8 RegOut[ RegMode[1] V 1.22V BG Internal + 0 Bandgap - 1 reference RegMode [0] RegOut[ Figure 4. GPIO bloc diagram Page 15 SX8723C DATASHEET and Figure 9). Each port terminal can be RegOut[0] RegIn[0] V REF ZoomingADC RegOut [1] RegIn [1] www.semtech.com/products/ ...

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... ZoomingADC 1 RegMode[ GPIO 0 D1/VREF Figure Reference Voltage Output and D1 is Reference output before feeding back as V REF . Simply substitute the external value for 1. the ADC conversion calculations. Page 16 SX8723C ZoomingADC for sensing data acquisition 0 OUT 1 RegMode[ Internal + 0 Bandgap - 1 ...

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... During this time, the internal blocs using the RC can not be used: no ADC conversion can be started. Revision 1.01 January 2011 © Semtech ZoomingADC for sensing data acquisition voltage is greater than 4.2V then V BATT Page 17 SX8723C DATASHEET if BATT BATT = V PUMP BATT. is BATT www ...

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... Semtech ZoomingADC for sensing data acquisition ± ± Vin Vin S ± Voff PGA1 ANALOG ZOOM Figure 10. ZADC General Functional Block Diagram Page 18 SX8723C DATASHEET V D2 ± Vin ± Voff PGA2 PGA3 ) are available REF www.semtech.com/products/ V IN,ADC ± Vin ± ...

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... GDoff IN , ADC TOT IN TOT Equation 2 is the total magnitude of PGA offset and S is the sign of the offset (see OFFTOT much higher than the input signal's Nyquist rate (typically f S Page 19 SX8723C DATASHEET over-sampled ADC is related to input voltage V IN,ADC ⋅ REF www ...

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... Out[7:0] Note 1 Out[15:8] SetNelconv 01, Note 3 IbAmpPga 11, Note 8 Pga2Gain 00, Note 12 Def Note 17 Page 20 SX8723C ZoomingADC for sensing data acquisition Block ADC disabled ADC enabled PGA1 disabled PGA1 enabled PGA2 disabled PGA2 enabled PGA3 disabled PGA3 enabled SetOsr Continuous 010, Note 4 ...

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... REF REFP REFN Equation 4 Table 9. Analog Input Selection V INN (RegACCfg5[5:1]) Sign AC0 Page 21 SX8723C ZoomingADC for sensing data acquisition . To compensate for offsets, the input signal is chopped (3+SetOsr[2:0]) . OSR = 8, 16, 32, ..., 512, 1024 IN1 Amux V INP 01x00 AC1 www.semtech.com/products/ DATASHEET = AC1 - AC0, ...

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... BATT REF BG REF,IN = ⋅ Equation 5 Table 11. PGA1 gain settings Pga1Gain bit (RegACCfg3[7 Page 22 SX8723C ZoomingADC for sensing data acquisition Amux V INP AC2 01x01 01x10 AC4 01x11 N.C. 11000 11001 11010 11011 AC0 11100 11101 11110 11111 = V -V ...

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... Table 13. PGA3 Gain and Offset Settings PGA3 Gain Pga3Offset bitfield GD [V/V] (RegACCfg4[6:0 0000000 1/12 (=0.083) 0000001 ... 6/12 0010000 ... 12/12 0100000 16/12 ... 0111111 32/12 1000000 Page 23 SX8723C DATASHEET Table 12. The V voltage at the output REF PGA2 offset GD [V/V] OFF2 0 +0.2 +0.4 +0.6 +0 -0.2 -0.4 -0.6 -0.8 -1.0 PGA3 Offset GD [V/V] ...

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... ADC Equation 7 V < BATT Equation 8 ⎛ ⎞ ⎛ V OSR < ⎜ ⎟ ⎜ REF ADC ⎝ ⎠ ⎝ 2 OSR Equation 9 Page 24 SX8723C DATASHEET PGA3 Offset GD [V/V] OFF3 -1/12 (=-0.083) -2/12 ... ... -16/12 ... ... -32/12 ... ... -63/12 (=-5.25) ⋅ REF − ⎞ 1 ⎟ ⎠ www.semtech.com/products/ ...

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... PGA stages, the input voltage V = ⋅ − GDoff IN , ADC TOT IN TOT Equation 10 = ⋅ TOT 3 2 Equation GDoff GDoff GD TOT 3 Equation 12 Page 25 SX8723C ZoomingADC for sensing data acquisition of the ADC is related to IN,ADC ⋅ ⋅ REF ⋅ ⋅ GDoff 3 2 www.semtech.com/products/ DATASHEET ...

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... Figure 11. Common mode input range on PGA for V Revision 1.01 January 2011 © Semtech ZoomingADC for sensing data acquisition Figure 11 if the supply voltage ( above 4.2V. BATT fs 62.5 or 125kHz V -1.8V V -1.2V V -0.8V BATT BATT BATT Page 26 SX8723C DATASHEET ) is below 4.2V and as depicted BATT fs 250kHz fs 500kHz Vcommon V BATT below 4.2V BATT www.semtech.com/products/ ...

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... V -1.2V V -0.8V BATT BATT BATT for gain 10 on first active PGA COMMON fs 62.5 or 125kHz fs 500 kHz 4.2 V Figure 13. Common mode input range on PGA vs VBATT Page 27 SX8723C ZoomingADC for sensing data acquisition Vcommon V BATT above 4.2V BATT 5 250 kHz 3.3 V 2.4V V BATT 5.5 V www.semtech.com/products/ DATASHEET ...

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... ZoomingADC for sensing data acquisition elementary incremental conversions and a final quantization ELCONV = + T ( OSR ELCONV S Equation 13 Elementary Elementary Conversion Conversion 2 N ELCONV - + T CONV Figure 14. Analog-to-Digital Conversion Sequence Page 28 SX8723C DATASHEET Figure 14, a complete analog-to Elementary End Conversion -1 N ELCONV - www.semtech.com/products/ Conversion Result ...

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... Table 15. Over-sampling ratio settings SetOsr[2:0] Over-Sampling Ratio (RegACCfg[4:2]) 000 001 010 011 100 101 110 111 = SetNelconv : [ ELCONV Equation 15 Page 29 SX8723C DATASHEET [Hz] 62.5 kHz 125 kHz 250 kHz 500 kHz ] OSR [-] 128 256 512 1024 elementary incremental ELCONV Table 16) given by: − ...

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... OSR ) log ( Equation SetNelconv[1:0] 001 010 011 100 SetOsr[2:0] Figure 15. Resolution vs. SetOsr[2:0] and SetNelconv[2:0] Figure 15, resolution can be set between 6 and 16 bits. Notice that, Page 30 SX8723C ZoomingADC for sensing data acquisition [-] ) [ bit ] ELCONV 101 110 111 www.semtech.com/products/ DATASHEET ...

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... CONV ELCONV Equation 17 . For example, consider an over-sampling ratio of 256, 2 elementary conversions, CONV SetNelconv control bits N ELCONV ‘00‘ ‘01‘ 131 Page 31 SX8723C ELCONV ‘10‘ ‘11’ ...

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... Normalized Conversion Time – Tconv / fs [-] 1 conversion time for different SetNelconv[1:0] /fs Page 32 SX8723C DATASHEET 1 ‘10‘ ‘11‘ 517 1033 1029 2057 2053 4105 4101 8201 1000 10000 www.semtech.com/products/ ...

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... GDoff TOT TOT ⎝ V REF Equation 19 Page 33 SX8723C ZoomingADC for sensing data acquisition Figure 18, the conversion time is also T Table 19). For input voltages outside the range, + OSR 1 ⋅ OSR ⎞ OSR 1 ⋅ ⎟ ⎟ ⋅ ...

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... SetNelconv = ‘01’ SetNelconv = ‘10’ 100000000 10000000 1000000 100000 10000 1000 100 Page 34 SX8723C DATASHEET 2 Hexadecimal Output Code 7FFF 7FFE ... 0001 0000 FFFF ... 8001 8000 1 SetNelconv = ‘11’ 1000000 10000 100 www.semtech.com/products/ ...

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... ADC REFP REFN 2 Equation 23 Table 21). If the system is idle, the PGAs and ADC can even be IbAmpPga [1:0] ADC Bias Current PGA Bias Current 1 ADC 1 ADC I ADC Page 35 SX8723C [ OSR ⋅ OSR 1 Max. fs [kHz] 125 250 500 1 125 ...

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... Use lower bias currents in the PGAs and the ADC using the control words IbAmpPga[1:0] and IbAmpAdc[1:0]. Reduce sampling frequency. Finally, remember that power reduction is typically traded off with reduced linearity, larger noise and slower maximum sampling speed. Revision 1.01 January 2011 © Semtech ZoomingADC for sensing data acquisition . BATT Page 36 SX8723C DATASHEET www.semtech.com/products/ ...

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... ZoomingADC for sensing data acquisition No Gain < 100 ? Yes Enable PGA2&3 Set PGA 2 gain Set PGA 3 gain GAIN = PGA2 x PGA3 End Figure 19. Gain configuration flowchart Page 37 SX8723C DATASHEET No Enable PGA1,2&3 Set PGA 1 gain Set PGA 2 gain Set PGA 3 gain GAIN = PGA1 x PGA2 x PGA3 www.semtech.com/products/ ...

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... The last significant bits (100xxXX ) can be defined by the GPIO pin D0 and D1. This mode is not set by default at startup, it must be activated in a register with a command. Default value is “00”. Revision 1.01 January 2011 © Semtech ZoomingADC for sensing data acquisition Address bit 100 XX XX Page 38 SX8723C DATASHEET www.semtech.com/products/ ...

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... Semtech ZoomingADC for sensing data acquisition 100 DEVICE T REGISTER T ADDRESS E ADDRESS SDA 0x00 0x06 Figure 21. I2C General Call reset frame Page 39 SX8723C DATASHEET GPIO www.semtech.com/products/ ...

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... Figure 23. I2C timing diagram for reading from a register REGISTER REGISTER ADDRESS VALUE ( Page 40 SX8723C ZoomingADC for sensing data acquisition REGISTER P VALUE DEVICE REGISTER D P ADDRESS ...

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... Figure 25. I2C timing diagram for multiple reading from a register Revision 1.01 January 2011 © Semtech REGISTER DEVICE R E ADDRESS T ADDRESS Page 41 SX8723C ZoomingADC for sensing data acquisition REGISTER REGISTER D VALUE (n) VALUE (n+ www.semtech.com/products/ DATASHEET ...

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... D0 and D1 pads input data 1 Enable/Disable I2C timeout 8 Set address by external pin 8 LSB of ADC result 8 MSB of ADC result 7 ADC conversion control 8 ADC conversion control 8 ADC conversion control 8 ADC conversion control 7 ADC conversion control 8 ADC conversion control 8 Chip operating mode register Page 42 SX8723C DATASHEET www.semtech.com/products/ ...

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... D1 pad output value. Only valid when D1Dir=1 and VrefD1In pad output value. Only valid when D0Dir=1 and VrefD1Out=0 Mode Reset Description r 0000 Reserved pad value pad value Mode Reset Description rw 00 Reserved 0 : Disabled Enabled rw 00000 Reserved Page 43 SX8723C DATASHEET www.semtech.com/products/ ...

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... Sets the continuous ADC conversion mode r 0 Reserved Mode Reset Description rw 11 Bias current selection for the ADC rw 11 Bias current selection for the PGA rw 0 PGA3 enable rw 0 PGA2 enable rw 0 PGA1 enable rw 0 ADC enable Page 44 SX8723C DATASHEET SetNelconv . 3+SetOsr . www.semtech.com/products/ ...

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... Description rw 0 Reserved rw 0000000 PGA3 offset selection Mode Reset Description r 0 ADC activity flag rw 0 Selects ADC and PGA default configuration, starts an ADC conversion rw 00000 Input channel configuration selector Reference channel selector BATT REF Page 45 SX8723C DATASHEET www.semtech.com/products/ ...

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... Force charge pump On. Takes priority Force charge pump Off Enable V output on D0 pin REF rw 0 Enable external V supply is below 4.2V or Off when V BATT Page 46 SX8723C Note 1 /2 rate ELCONV rate ELCONV Note 2 Note pin REF supply is above 4.2V. Enabling the charge BATT www.semtech.com/products/ DATASHEET ...

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... The input impedance on channels that are not selected is very high (>10MOhm). Revision 1.01 January 2011 © Semtech ZoomingADC for sensing data acquisition 1 ≥ Ω ⋅ ⋅ gain Cp s Equation 24 Table 37: Gain capacitor Cg 0.45 0.54 0.735 2.4 Page 47 SX8723C DATASHEET Equation 24. ] Parasitic capacitor Cp Units 1.04 pF 1 www.semtech.com/products/ ...

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... Figure 26. The Switched Capacitor Principle − Equation 25 with a capacitor switched at frequency f is − ⋅ ⋅ Equation 26 Current integration Sensor ZoomingADC (model) impedence Sensor Node C Capacitance Figure 27. The Switched Capacitor Principle Page 48 SX8723C DATASHEET www.semtech.com/products/ ...

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... For s = ------------------------------------ - ⋅ OSR N ELCONV Equation 27 ELCONV Table 38. 50/60 Hz Line Rejection Examples f [Hz] fs [kHz] NOTCH 61 125 61 250 61 500 53 62.5 46 62.5 46 125 Page 49 SX8723C ZoomingADC for sensing data acquisition 1 2 … – 1 ELCONV . OSR [-] N [-] ELCONV 1024 2 1024 4 1024 8 1024 8 1024 4 1024 8 www.semtech.com/products/ DATASHEET ...

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... The following figures show the Integral non linearity for different gain settings over the chip temperature range Revision 1.01 January 2011 © Semtech ZoomingADC for sensing data acquisition Nelconv = 1 2.5 3 3.5 4 Nelconv = 4 2.5 3 3.5 4 Page 50 SX8723C DATASHEET 1.2 1 0.8 0.6 0.4 0 0.5 1 1.5 2 2.5 3 Normalized Frequency - f x (OSR / fs) [-] 1 ...

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... OSR=1024 ; Nelconv=8 ; fs=250kHz; Resolution=16bits INL Gain 10 @ 25° -10 -0.2 0.05 0.1 0.15 0.2 Page 51 SX8723C DATASHEET -1.5 -1 -0.5 0 0.5 V [V] IN Figure 30. INL 25°C -1.5 -1 -0.5 0 0.5 V [V] IN Figure 32. INL 125°C -0.15 -0.1 -0.05 0 0.05 0.1 V [V] IN Figure 34. INL 25°C www.semtech.com/products ...

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... INL Gain 100 @ 125° -10 -20 -30 -40 -50 0.005 0.01 0.015 0.02 -0.02 Page 52 SX8723C DATASHEET -0.15 -0.1 -0.05 0 0.05 V [V] IN Figure 36. INL 125°C =10; OSR=1024 ; Nelconv=8 ; fs=250kHz; -0.015 -0.01 -0.005 0 0.005 V [V] IN Figure 38. INL 25°C -0.015 -0.01 -0.005 0 0.005 V [V] IN Figure 40. INL 125°C www ...

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... Page 53 SX8723C DATASHEET =10, GD =10; OSR=1024 ; ELCONV INL Gain 1000 @ 25°C -0.0015 -0.001 -0.0005 0 0.0005 V [V] IN Figure 42. INL 25°C INL Gain 1000 @ 125°C -0.0015 -0 ...

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... The extracted rms output noise of PGA1, 2, and 3 are given in output rms noise voltage. Revision 1.01 January 2011 © Semtech ZoomingADC for sensing data acquisition should result in a constant output code. However, because of circuit noise, the IN Table 39, page Page 54 SX8723C DATASHEET Figure 45 56: standard output deviation and www.semtech.com/products/ shows ...

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... REFN , ⎠ ⎝ ⎠ ⎝ TOT ( ⋅ OSR N ELCONV Equation 28 : Page 55 SX8723C ZoomingADC for sensing data acquisition ± Vin Vin ± Voff Voff PGA2 PGA3 OFF2 OFF3 , GD , and GD are the PGA gains of stages ...

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... Vin Vin S ± Voff PGA1 V REF,ADC Figure 48. Total Input Referred Noise = 10 ( PGA3 bypassed), OSR = 512 PGA1 is dominant over that of PGA2. Using N1 Page 56 SX8723C DATASHEET (increases the ADC averaging effect, ELCONV = 5V) ELCONV REF PGA2 PGA3 V = 340 V = 365 N2 N3 ...

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... Figure 49. Gain Error vs. Temperature for Different Gains Revision 1.01 January 2011 © Semtech > 1. ELCONV 100 100 Figure 50. Offset Error vs. Temperature for Different Gains Page 57 SX8723C ZoomingADC for sensing data acquisition Equation 19, page Figure 50. The output offset NORMALIZED TO 25° C 100 -20 -40 -50 -25 ...

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... Figure 51. Current Consumption vs. Supply Voltage and PGAs Revision 1.01 January 2011 © Semtech 60). The Charge Pump is forced ON for V ADC ADC+PGA1 ADC+PGA12 ADC+PGA123 2 2 [V] BATT Page 58 SX8723C ZoomingADC for sensing data acquisition , as well as the distribution between the BATT < 4.2V and forced OFF for BATT 4.5 5 5.5 www.semtech.com/products/ DATASHEET ...

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... Figure 52. Current Consumption vs Temperature and ADC Sampling Frequency Revision 1.01 January 2011 © Semtech ZoomingADC for sensing data acquisition 62.5Khz, Ibias = 0.25 125Khz, Ibias = 0.25 250Khz, Ibias = 0.5 500Khz, Ibias = 1 2.5 3.0 3.5 4.0 4.5 V [V] BATT Page 59 SX8723C DATASHEET Figure 52, IbAmpPga/Adc = '11' , '10' , < 4.2V and forced OFF for V BATT BATT 5.0 5.5 www.semtech.com/products/ > ...

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... January 2011 © Semtech ZoomingADC for sensing data acquisition Figure 53, showing the increase between -40 and +125°C. Vbatt = 2.4v Vbatt = 3.5v Vbatt = 5.5v - Temperature [°C] PGA1 PGA2 103 67 Page 60 SX8723C DATASHEET 80 100 120 PGA3 Total 78 406 91 516 98 606 www.semtech.com/products/ Unit uA ...

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... IO or Vref OUT or Vref OUT I2C addr, Digital I2C addr, Digital IO or Vref Vref IN Digital IO N.A. Digital IO N. Page 61 SX8723C DATASHEET SX8723S SX8724S MLPQ-16 4x4 MLPQ-16 4x4 SPI SPI Digital IO or Vref Digital IO or Vref OUT OUT Digital IO or Vref Digital IO or Vref OUT ...

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... SPI versions 12 AC3 11 AC2 10 VPUMP 9 SCL 8 SDA AC3 11 AC2 10 VPUMP 9 SCL 8 SDA 7 D0 Page 62 SX8723C DATASHEET AC3 N. SDO/RDY SX8723S (Top view) N. AC4 AC3 AC6 ...

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... For evaluation purposes SX8724CEVK evaluation kit can be ordered. This kit connects to any PC using a USB port. The "SX87xx Evaluation Tools" software gives the user the ability to control the SX8723C registers as well as getting the raw data from the ZoomingADC and displaying it on the "Graphical User interface". For more information please look at SEMTECH web site (http://www ...

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... Page 64 SX8723C DATASHEET ...

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... FAILURE MAY COMPROMISE THE THERMAL AND/OR FUNCTIONAL PERFORMANCE OF THE DEVICE. Revision 1.01 January 2011 © Semtech H DIM Page 65 SX8723C ZoomingADC for sensing data acquisition DIMENSIONS INCHES MILLIMETERS (.156) (3.95) .126 3.20 .130 3.30 .104 2.65 .020 0.50 .006 0.15 .012 0.30 .030 0.75 ...

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... Revision 1.01 January 2011 © Semtech ZoomingADC for sensing data acquisition Figure 56. Direction of Feed Figure 57. User direction of feed Reel Size 4.35 4.35 1.10 7/13 Page 66 SX8723C MLP (rectangular) Direction of Feed Reel Reel Trailer Leader (in) Width Length (mm) Length (mm) 12.4 400 www.semtech.com/products/ DATASHEET QTY per Reel ...

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... Semtech Ltd., Units 2 & 3, Park Court, Premier Way, Abbey Park Industrial Estate, Romsey, Hampshire, SO51 9DN. EUROPE Tel: +44 (0)1794 527 600 Fax: +44 (0)1794 527 601 Revision 1.01 January 2011 © Semtech ZoomingADC for sensing data acquisition Page 67 SX8723C DATASHEET ISO9001 CERTIFIED www.semtech.com/products/ ...