AD7389-4 Series

The AD7389-4 a 16-bit, quad, simultaneous sampling, high speed, successive approximation register (SAR), analog-to-digital converter (ADC) that operates from a 3.0 V to 3.6 V power supply and features throughput rates up to 2 MSPS. The analog input type is differential, accepts a wide common-mode input voltage, and the analog inputs are sampled and converted on the falling edge ofCS.The AD7389-4 has on-chip oversampling blocks to improve dynamic range and reduce noise at lower bandwidths. The oversampling can boost up to two bits of added resolution. A buffered internal 2.5 V reference (10 ppm/°C) is included.The conversion process and data acquisition use standard control inputs allowing for easy interfacing to microprocessors or digital signal processors (DSPs). The conversion result can clock out simultaneously via 4-wire mode for faster throughput or via 1-wire serial mode when slower throughput is allowed. The device is compatible with 1.8 V, 2.5 V, and 3.3 V interfaces, using the separate logic supply.The AD7389-4 is available in a 24-lead lead frame chip scale package (LFCSP) with operation specified from −40°C to +125°C.APPLICATIONSMotor control position feedbackMotor control current senseData acquisition systemsErbium doped fiber amplifier (EDFA) applicationsIn phase and quadrature demodulationPRODUCT HIGHLIGHTSQuad simultaneous sampling and conversion.Pin-compatible product family.High throughput rate, 2 MSPS at 16-bit.Space-saving, 4 mm × 4 mm LFCSP.Integrated oversampling block to increase dynamic range, reduce noise and reduce SCLK speed requirements.Differential analog inputs with wide common-mode range.Small sampling capacitor reduces amplifier drive burden.