LTC1598LCG Linear Technology, LTC1598LCG Datasheet
LTC1598LCG
Specifications of LTC1598LCG
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LTC1598LCG Summary of contents
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... The high impedance analog inputs and the ability to operate with reduced spans (to 1.5V full scale) allow direct connection to sensors and transducers in many applications, eliminating the need for gain stages. , LTC and LT are registered trademarks of Linear Technology Corporation. MICROWIRE is a trademark of National Semiconductor Corporation ...
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... CS High Time Between Data Transfer Cycles WHCS t CS Low Time During Data Transfer WLCS 2 U RATINGS Power Dissipation .............................................. 500mW Operating Temperature Range + 0.3V) LTC1594LCS/LTC1598LCG ..................... 0.3V) LTC1594LIS/LTC1598LIG ................. – Storage Temperature Range ................. – 150 C + 0.3V) Lead Temperature (Soldering, 10 sec).................. 300 ORDER PART ...
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... Hi-Z Output Leakage OZ I Output Source Current SOURCE I Output Sink Current SINK R Reference Input Resistance REF I Reference Current REF I Supply Current CC LTC1594LCS/LTC1598LCG MIN TYP 10.5kHz. (Note 5) A SMPL CONDITIONS 1kHz Input Signal 1kHz Input Signal 1kHz Input Signal 1kHz Input Signal CONDITIONS V = 3.6V ...
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LTC1594L/LTC1598L AC CHARACTERISTICS otherwise specifications are C.(Note 5) A SYMBOL PARAMETER t Analog Input Sample Time SMPL f Maximum Sampling Frequency SMPL(MAX) t Conversion Time CONV t Delay Time, CLK to D Data Valid dDO OUT ...
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W U TYPICAL PERFORMANCE CHARACTERISTICS Change in Offset vs Reference Voltage 3 2. 200kHz CLK f = 10.5kHz SMPL 2.0 1.5 1.0 0.5 0 0.5 1.0 1.5 2.0 2.5 ...
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LTC1594L/LTC1598L W U TYPICAL PERFORMANCE CHARACTERISTICS 4096 Point FFT Plot 2.7V CC – 2.5V REF f = 3.05kHz 120kHz CLK – 7.5kHz SMPL ...
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PIN FUNCTIONS LTC1594L CH0 (Pin 1): Analog Multiplexer Input. CH1 (Pin 2): Analog Multiplexer Input. CH2 (Pin 3): Analog Multiplexer Input. CH3 (Pin 4): Analog Multiplexer Input. ADCIN (Pin 5): ADC Input. This input is the positive ...
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LTC1594L/LTC1598L PIN FUNCTIONS V (Pin 15): Power Supply Voltage. This pin provides CC power to the A/D Converter. It must be bypassed directly to the analog ground plane. V (Pin 16): Reference Input. The reference input REF ...
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TEST CIRCUITS Voltage Waveforms for D Delay Times, t OUT CLK dDO D OUT Load Circuit for t and t dis TEST POINT 3k D OUT 100pF dDO LTC1594L/LTC1598L CSADC V OH CLK V OL 1594L/98L TC03 ...
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LTC1594L/LTC1598L U U APPLICATIONS INFORMATION OVERVIEW The LTC1594L/LTC1598L are 3V micropower, 12-bit sampling A/D converters that feature 4- and 8-channel multiplexers respectively. They typically draw only 160 A of supply current when sampling at 10.5kHz. Supply current drops linearly as ...
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U U APPLICATIONS INFORMATION CSMUX = CSADC = CS CLK Hi-Z D OUT CH0 TO CH7 ADCIN = MUXOUT COM = GND Figure 2. LTC1594L/LTC1598L Operating Sequence Example: All Channels Off Data Transfer The CLK synchronizes ...
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LTC1594L/LTC1598L U U APPLICATIONS INFORMATION after a delay all the channels are switched off to OFF ensure a break-before-make interval. After this interval, the selected channel is switched on allowing signal transmission. The selected channel remains on ...
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U U APPLICATIONS INFORMATION Operation with D and D Tied Together IN OUT The LTC1594L/LTC1598L can be operated with D D tied together. This eliminates one of the lines OUT required to communicate to the microprocessor (MPU). Data is transmitted ...
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LTC1594L/LTC1598L U U APPLICATIONS INFORMATION CSADC CSMUX t suCS CLK NULL BIT D OUT SMPL CH0 TO CH7 t ON ADCIN = MUXOUT COM = GND Figure 5. ...
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U U APPLICATIONS INFORMATION BOARD LAYOUT CONSIDERATIONS Grounding and Bypassing The LTC1594L/LTC1598L are easy to use if some care is taken. They should be used with an analog ground plane and single point grounding techniques. The GND pin should be ...
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LTC1594L/LTC1598L U U APPLICATIONS INFORMATION edge, the S & H goes into hold mode and the conversion begins. The voltage on the “COM” input must remain constant and be free of noise and ripple throughout the conversion time. Otherwise, the ...
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U U APPLICATIONS INFORMATION Input Leakage Current Input leakage currents can also create errors if the source resistance gets too large. For instance, the maximum input leakage specification of 200nA ( flowing through a source resistance of 600 ...
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LTC1594L/LTC1598L U U APPLICATIONS INFORMATION Conversion Speed with Reduced V With reduced reference voltages, the LSB step size is reduced and the LTC1594L/LTC1598L internal compara- tor overdrive is reduced. Therefore, it may be necessary to reduce the maximum CLK frequency ...
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U U APPLICATIONS INFORMATION specification in the Dynamic Accuracy table includes the 2nd through 5th harmonics. With a 1kHz input signal, the LTC1594L/LTC1598L have typical THD of 78dB with V = 2.7V. CC Intermodulation Distortion If the ADC input signal ...
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LTC1594L/LTC1598L U TYPICAL APPLICATIONS LDA #$52 Configuration data for serial peripheral control register (Interrupts disabled, output enabled, master, Norm = Clk/16) STA $0A Load configuration data into location $0A (SPCR) LDA #$FF Configuration data for I/O ...
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U TYPICAL APPLICATIONS MULTICHANNEL A/D USES A SINGLE ANTIALIASING FILTER This circuit demonstrates how the LTC1598L’s indepen- dent analog multiplexer can simplify design of a 12-bit data acquisition system. All eight channels are MUXed into a single 1kHz, 4th order ...
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LTC1594L/LTC1598L U TYPICAL APPLICATIONS Using MUXOUT/ADCIN Loop as PGA This figure shows the LTC1598L’s MUXOUT/ADCIN pins and an LT1368 being used to create a single channel PGA with eight noninverting gains. Combined with the LTC1391, the system can expand to ...
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... MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...
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... Low Power, Small Size, Low Cost REF CC 10 CSADC 6 CSMUX 5, 14 12-BIT CLK 7 D ADC OUT 12 NC LTC1598L 13 NC GND 4, 9 1594L/98L TA07 , CLK, Sample-and-Hold REF , CLK, Sample-and-Hold REF LT/TP 0404 1K REV B • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1997 15948lfb ...