AD7699

Data Sheet FEATURES 16-bit resolution with no missing codes 8-channel multiplexer with choice of inputs Unipolar single-ended Differential (GND sense) Pseudobipolar Throughput: 500 kSPS INL: ±0.5 LSB typical, ±1.5 LSB maximum (±23 ppm or FSR) Dynamic range: 93.3 dB SINAD: 91.5 dB at 20 kHz THD: −97 dB at 20 kHz Analog input range: 0 V to VREF with VREF up to VDD Multiple reference types Internal 4.096 V External buffered (up to 4.096 V) External (up to VDD) Internal temperature sensor Channel sequencer, selectable 1-pole filter, busy indicator No pipeline delay, SAR architecture Single-supply 5 V operation with 1.8 V to 5 V logic interface Serial interface compatible with SPI, MICROWIRE, QSPI, and DSP Power dissipation 26 mW at 500 kSPS 5.2 μW at 100 SPS Standby current: 50 nA 20-lead 4 mm × 4 mm LFCSP package APPLICATIONS Battery-powered equipment Medical instruments: ECG/EKG Mobile communications: GPS Personal digital assistants Power line monitoring Data acquisition Seismic data acquisition systems Instrumentation Process control 16-Bit, 8-Channel, 500 kSPS PulSAR ADC AD7699 FUNCTIONAL BLOCK DIAGRAM 0.5V TO 4.096V 0.1µF 0.5V TO VDD 10µF 5V REFIN REF VDD BAND GAP REF IN0 IN1 IN2 IN3 IN4 IN5 IN6 IN7 COM TEMP SENSOR AD7699 MUX 16-BIT SAR SPI SERIAL ADC INTERFACE ONE-POLE LPF SEQUENCER GND 1.8V VIO TO VDD CNV SCK SDO DIN Figure 1. Table 1. Multichannel 14-/16-Bit PulSAR® ADC Type Channels 250 kSPS 500 kSPS ADC Driver 14-Bit 8 AD7949 ADA4841-1 16-Bit 4 ...