MCP3423EV Microchip Technology, MCP3423EV Datasheet
MCP3423EV
Specifications of MCP3423EV
Related parts for MCP3423EV
MCP3423EV Summary of contents
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... Thermocouple • Bridge Sensing for Pressure, Strain, and Force • Weigh Scales • Battery Fuel Gauges • Factory Automation Equipment © 2009 Microchip Technology Inc. MCP3422/3/4 Description The MCP3422, MCP3423 and MCP3424 devices (MCP3422/3/4) are the low noise and high accuracy 18-Bit delta-sigma analog-to-digital (Δ ...
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... CH1- Adr0 SCL SDA CH2 CH2- DD Table 3- Voltage Reference (2.048V) V REF 2 ΔΣ ADC I PGA Converter Interface Clock Oscillator MCP3424 SOIC, TSSOP 14 CH4- 1 CH1 CH4+ 12 CH3- 3 CH2 CH3 Adr1 Adr0 9 DD SDA 7 8 SCL SCL C SDA © 2009 Microchip Technology Inc. ...
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... Functional Block Diagram MCP3423 CH1+ CH1- CH2+ CH2- Gain = 1,2, Functional Block Diagram CH1+ CH1- CH2+ CH2- CH3+ CH3- Gain = 1,2, CH4+ CH4- © 2009 Microchip Technology Inc Voltage Reference (2.048V) V REF ΔΣ ADC PGA Converter Clock Oscillator MCP3424 Voltage Reference (2 ...
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... MCP3422/3/4 NOTES: DS22088C-page 4 © 2009 Microchip Technology Inc. ...
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... Addr_Float voltage is applied at address pin. 10: No voltage is applied at address pin (left “floating”). © 2009 Microchip Technology Inc. †Notice: Stresses above those listed under “Maximum Rat- ings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied ...
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... IH µ GND IL V The device reads logic low. V The device reads logic high. V Read pin voltage if voltage is applied to the address pin. (Note 9) Device outputs float output voltage (V /2) on the address DD pin, if left “floating”. (Note 10 © 2009 Microchip Technology Inc. ...
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... Storage Temperature Range Thermal Package Resistances Thermal Resistance, 8L-DFN (2x3) Thermal Resistance, 8L-MSOP Thermal Resistance, 8L-SOIC Thermal Resistance, 10L-DFN (3x3) Thermal Resistance, 10L-MSOP Thermal Resistance, 14L-SOIC Thermal Resistance, 14L-TSSOP © 2009 Microchip Technology Inc -40°C to +125° Sym Min Typ Max ...
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... MCP3422/3/4 NOTES: DS22088C-page 8 © 2009 Microchip Technology Inc. ...
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... Temperature ( C) FIGURE 2-2: INL vs. Temperature PGA = 8 5 PGA = -10 PGA = 2 -15 -20 -60 -40 - 100 120 140 Temperature (°C) FIGURE 2-3: Offset Error vs. Temperature. © 2009 Microchip Technology Inc. = +5.0V 0V, CHn+ = CHn +25° PGA = 5.5 -100 -75 FIGURE 2-4: Voltage. 2 PGA = 1 1.5 PGA = ...
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... V = 2.7V DD -110 -120 0.1 0.1 FIGURE 2-11: /2, REF 100 120 140 Temperature (°C) Oscillator Drift vs. Data Rate = 3.75 SPS 1 10 100 1000 10000 1 10 100 1k 10k Input Signal Frequency (Hz) Frequency Response. © 2009 Microchip Technology Inc. ...
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... C is the package pin capacitance and PIN typically about 4 pF. D and D are the ESD diodes the differential input sampling capacitor. SAMPLE © 2009 Microchip Technology Inc. Table 3-1. MCP3424 Sym SOIC, TSSOP 1 CH1+ Positive Differential Analog Input Pin of Channel 1 2 CH1- ...
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... There is an internal electrical connection between the Exposed Thermal Pad (EP) and the V be connected to the same potential on the Printed Circuit Board (PCB). Sampling Switch SAMPLE (3.2 pF interface. The SDA line to the SDA pin. Except for pin; they must SS © 2009 Microchip Technology Inc. ...
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... A 0.1 µF decoupling capacitor should be mounted as close as possible to the V for additional transient immunity. © 2009 Microchip Technology Inc. The threshold voltage is set at 2.2V with a tolerance of approximately ±5%. If the supply voltage falls below this threshold, the device will be held in a reset condition ...
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... Self-Calibration The device performs a self-calibration of offset and gain for each conversion. This provides reliable conversion results from conversion-to-conversion over variations in temperature as well as power supply fluctuations. Ω Z (f) = 2.25 M /PGA IN 2-11) may not give enough © 2009 Microchip Technology Inc. ...
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... Where Resolution, which is programmed in the Configuration Register. © 2009 Microchip Technology Inc. Table 4-1 shows the LSB size of each conversion rate setting. The measured unknown input voltage is obtained by multiplying the output codes with LSB. See the following section for the input voltage calculation using the output codes ...
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... CODES TO INPUT VOLTAGE LSB • ----------- - = (Output Code) PGA LSB • ′ ----------- - s complement of Output Code) PGA = See Table 4-1 = 1’s complement + +0)x LSB(15.625μV)/PGA 0 )x LSB(15.625μV)/PGA 0 )x LSB(15.625μV)/PGA 1 +0)x LSB(15.625μV)/PGA © 2009 Microchip Technology Inc. ...
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... RDY bit = 1 means the conversion result is not updated since the last reading. A new conversion is under processing and the RDY bit will be cleared when the new conversion result is ready © 2009 Microchip Technology Inc. 5.1.2 ONE-SHOT CONVERSION MODE (O/C BIT = Once the One-Shot Conversion Mode (single conver- ...
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... The user can rewrite the configuration byte any time during the device operation. Register 5-1 shows the configuration register bits. R/W-1 R/W-0 R/W-0 O Unimplemented bit, read as ‘0’ ‘0’ = Bit is cleared R/W-0 R/W bit Bit is unknown © 2009 Microchip Technology Inc. ...
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... The conversion result Continuous Conversion mode was already read. The next new conversion data is not ready. The RDY bit stays high until a new conversion is completed. © 2009 Microchip Technology Inc Serial Communications The device communicates (microcontroller) through a serial I Circuit) interface and support standard (100 kbits/sec), fast (400 kbits/sec) and high-speed (3 ...
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... The device latches the floating condition immediately after the General Call Latch command Table 5-3 Float waveform (output) at address pin SCL SDA FIGURE 5-2: Command and Voltage Output at Address Pin Left “Floating” (MCP3423 and MCP3424). General Call Latch © 2009 Microchip Technology Inc. ...
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... See Figure 5-1 for details in Address Byte. FIGURE 5-3: Timing Diagram For Writing To The MCP3422/3/4. © 2009 Microchip Technology Inc. 5.3.3 WRITING A CONFIGURATION BYTE TO THE DEVICE When the Master sends an address byte with the R/W bit low (R/W = 0), the device expects one configuration byte following the address ...
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... Master may read the configuration byte to check the RDY bit condition.The Master may continuously send clock (SCL) to repeatedly read the configuration byte (to check the RDY bit status). Figures 5-4 and 5-5 show the timing diagrams of the reading. Digital Output Codes © 2009 Microchip Technology Inc. ...
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... FIGURE 5-4: Timing Diagram For Reading From The MCP3422/3/4 With 18-Bit Mode. © 2009 Microchip Technology Inc. MCP3422/3/4 DS22088C-page 23 ...
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... MCP3422/3/4 FIGURE 5-5: Timing Diagram For Reading From The MCP3422/3/4 With 12-Bit to 16-Bit Modes. DS22088C-page 24 © 2009 Microchip Technology Inc. ...
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... Note: The I C specification does not allow ‘00000000’ (00h) in the second byte. FIGURE 5-6: General Call Address Format. © 2009 Microchip Technology Inc. 5.5 High-Speed (HS) Mode 2 The I C specification requires that a high-speed mode device must be ‘activated’ to operate in high-speed mode. This is done by sending a special address byte of “ ...
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... START condition. the Master The non-acknowledgement (NAK) is issued by providing the SDA line to “HIGH” during the 9th clock pulse. (D) (D) ADDRESS OR DATA ACKNOWLEDGE ALLOWED VALID TO CHANGE 2 C Serial Bus. SDA line to allow the Master (C) (A) STOP CONDITION © 2009 Microchip Technology Inc. ...
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... If this parameter is too short, it can create an unintended Start or Stop condition to other devices on the bus line. If this parameter is too long, Clock Low time (T 4: For Data Input: If this parameter is too long, the Data Input Setup (T For Data Output: This parameter is characterized, and tested indirectly by testing T © 2009 Microchip Technology Inc. = -40 to +85° Min Typ ...
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... MHz b SCL ns From 400 pF 1.7 MHz b SCL 100 pF 3.4 MHz b SCL 400 pF 1.7 MHz b SCL 100 pF 3.4 MHz b SCL 400 pF 1.7 MHz b SCL ns After this period, the first clock pulse is generated HD:DAT ) can be affected. LOW parameter. AA © 2009 Microchip Technology Inc. ...
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... SU:STA SCL T LOW T SDA HD:STA FIGURE 5- Bus Timing Data. © 2009 Microchip Technology Inc. T HIGH T SU:DAT T HD:DAT T AA MCP3422/3 SU:STO T BUF 0.7V DD 0.3V DD DS22088C-page 29 ...
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... MCP3422/3/4 NOTES: DS22088C-page 30 © 2009 Microchip Technology Inc. ...
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... The pull-up resistor is typically chosen between 5 kΩ and 10 kΩ ranges for standard and fast modes, and less than 1 kΩ for high speed mode depending on the presence of bus loading capacitance. © 2009 Microchip Technology Inc. 2 6.1 ADDRESS SELECTION PINS ...
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... Differential Input Signal Connection: Excitation 9 Stop Bit (b) Single-ended Input Signal Connection: R/W MCP342X Excitation Response Sensor FIGURE 6-4: Ended Input Connections. Sensor CHn+ Input Signal CHn- MCP342X R 1 CHn+ Input Signal R 2 CHn- MCP342X Differential and Single- © 2009 Microchip Technology Inc. ...
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... FIGURE 6-5: Battery Voltage and Charging/Discharging Current Measurement. © 2009 Microchip Technology Inc. For the current measurement, the device measure the voltage across the current sensor, and converts it by dividing the measured voltage by a known resistance value. The voltage drops across the sensor is waste. ...
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... Where: 1 LSB = Isothermal Block MCP9800 SDA SCL MCP9800 SDA SCL μ = 15.625 V/PGA μ = 1.953125 V for PGA = 8 μ • μ V/°C = 320 V/°C μ 320 V/°C = ------------------------ - = 20.48 Codes/°C μ 15.625 V 15.625 µV with 18 bit configuration © 2009 Microchip Technology Inc. ...
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... The pressure is measured by using NPP 301 (manufactured by GE NovaSensor), and temperature is measured by a thermistor. The pressure sensor output is 20 mV/V. This gives 100 mV of full scale output for V DD © 2009 Microchip Technology Inc. ⎞ ⎟ ⎟ μ V ⎠ ...
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... The thermistor sensor is simple to use and widely used for the temperature measurement applications. It has both linear and non-linear responses over temperature range used to adjust the linear region of interest 1 for measurement. DS22088C-page 36 ⎞ ⎟ ⎟ μ V ⎠ PGA temperature ) 2 © 2009 Microchip Technology Inc. ...
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... MCP3422/3/4 Evaluation Boards The Evaluation Boards for MCP3422/3/4 devices are available from Microchip Technology Inc. The boards work with Microchip’s PICkit™ Serial Analyzer. The user can simply connect any sensing voltage to the input test pads of the board and read conversion codes using the easy-to-use PICkit™ ...
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... MCP3422/3/4 NOTES: DS22088C-page 38 © 2009 Microchip Technology Inc. ...
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... Note: In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. © 2009 Microchip Technology Inc. MCP3422/3/4 Example: AGM 929 ...
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... MSOP (MCP3423) XXXXXX YWWNNN 14-Lead SOIC (150 mil) (MCP3424) XXXXXXXXXXX XXXXXXXXXXX YYWWNNN 14-Lead TSSOP (4.4 mm) (MCP3424) XXXXXXXX YYWW NNN DS22088C-page 40 Example 3423 2 9 0929 3 8 256 Example: 3423E 929256 Example: MCP3424 e E/SL^^ 3 0929256 Example: MCP3424E 0929 256 © 2009 Microchip Technology Inc. ...
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... Microchip Technology Inc. MCP3422/3/4 DS22088C-page 41 ...
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... MCP3422/3/4 DS22088C-page 42 © 2009 Microchip Technology Inc. ...
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... Microchip Technology Inc. MCP3422/3/4 I φ DS22088C-page 43 ...
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... MCP3422/3/4 DS22088C-page 44 α φ β © 2009 Microchip Technology Inc. ...
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... Microchip Technology Inc. MCP3422/3/4 DS22088C-page 45 ...
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... MCP3422/3/4 DS22088C-page 46 © 2009 Microchip Technology Inc. ...
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... Microchip Technology Inc. MCP3422/3/4 DS22088C-page 47 ...
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... MCP3422/3/4 DS22088C-page 48 I © 2009 Microchip Technology Inc. φ ...
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... Microchip Technology Inc. MCP3422/3/4 φ β α DS22088C-page 49 ...
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... MCP3422/3/4 DS22088C-page 50 © 2009 Microchip Technology Inc. ...
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... Microchip Technology Inc. MCP3422/3/4 I φ DS22088C-page 51 ...
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... MCP3422/3/4 NOTES: DS22088C-page 52 © 2009 Microchip Technology Inc. ...
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... Added new package marking information and package outline drawings for MCP3422 and MCP3423 devices. 3. Added MCP3422 and MCP3423 devices to Product Identification System page. Revision A (June 2008) • Original Release of this Document. © 2009 Microchip Technology Inc. MCP3422/3/4 DS22088C-page 53 ...
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... MCP3422/3/4 NOTES: DS22088C-page 54 © 2009 Microchip Technology Inc. ...
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... Default option. Contact Microchip factory for other address options. © 2009 Microchip Technology Inc. X /XX Examples: Package MCP3422 a) MCP3422A0-E/MC: 2-Channel ADC, b) MCP3422A0T-E/MC: Tape and Reel, c) MCP3422A0-E/MS: 2-Channel ADC, d) MCP3422A0T-E/MS: Tape and Reel, e) MCP3422A0-E/SN: 2-Channel ADC, f) MCP3422A0T-E/SN: Tape and Reel, MCP3423 a) MCP3423-E/MF: ...
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... MCP3422/3/4 NOTES: DS22088C-page 56 © 2009 Microchip Technology Inc. ...
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... REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...
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... Fax: 886-3-6578-370 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2009 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...