AD7993 Datasheet | Analog Devices

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 patible 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 k Hz. The AD7994/AD7993 provide a two-wire serial interface which is patible with I2C interfaces. The parts e in two versions, AD7994-0/AD7993-0 to AD7994-1/ AD7993-1. Each version allows for a minimum of two different I2C addresses. The I2C interface on the AD79940/AD7993-0 supports Standard and Fast I2C Interface Modes. The I2C interface on the AD7994-1/AD7993-1 supports Standard, Fast and two High-Speed I2C Interface Modes. The AD7994/AD7993 normally remain in a shutdown state while not converting, powering up only for conversions. The conversion process can be controlled using the CONVST pin, an Automatic Conversion Cycle selected through software control, or a mode where conversions occur across Write operations. There are no pipeline delays associated with the part. The reference for the part is applied externally to the REFIN pin...