4-Channel 12-/10-Bit ADCs
PRELIMINARY TECHNICAL DATA
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4-Channel, 12-/10-Bit ADCs with I2C Compatible Interface in 16-Lead TSSOP AD7994/AD7993 P...
Description
PRELIMINARY TECHNICAL DATA
a
4-Channel, 12-/10-Bit ADCs with I2C Compatible Interface in 16-Lead TSSOP AD7994/AD7993 Preliminary Technical Data
FUNCTIONAL BLOCK DIAGRAM
VDD GND REFIN CONVST
FEATURES 12-Bit ADC with Fast Conversion Time: 2 µs Four Single-Ended Analog Input Channels Specified for VDD of 2.7 V to 5.5 V Low Power Consumption Fast Throughput Rate:- 188 KSPS Sequencer Operation Automatic Cycle Mode I2CR Compatible Serial Interface I2CR Interface supports: Standard, Fast, and High-Speed Modes Out of Range Indicator/Alert Function Pin-Selectable Addressing via AS Two Versions Allow Five I2C Addresses Shutdown Mode: 1µA max 16-Lead TSSOP Package
AD7994/AD7993
VIN1 VIN2 VIN3 VIN4 T/H I/P MUX 12-/10-BIT SUCCESSIVE APPROXIMATION ADC CONTROL LOGIC
OSCILLATOR
DATALOW LIMIT REGISTER CH1-CH4
CONVERSION RESULT REGISTER CONFIGURATION REGISTER ALERT STATUS REGISTER CYCLE TIMER REGISTER I2C INTERFACE SCL SDA ALERT
DATAHIGH LIMIT REGISTER CH1-CH4
GENERAL DESCRIPTION
HYSTERESIS REGISTER CH1-CH4 AS
The AD7994/AD7993 are 4 channel, 12-/10-bit, high speed, low power, successive-approximation ADCs respectively. They operate from a single 2.7 V to 5.5 V power supply and feature a conversion time of 2 µs. The parts contain a four channel multiplexer and track/hold amplifier which can handle input frequencies in excess of TBD kHz. The AD7994/AD7993 provide a two-wire serial interface which is compatible with I2C interfaces. The parts come in two versions, AD7994-0/AD7993-0 to ...
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