AD7699 Datasheet | Analog Devices

FEATURES 16-bit resolution with no missing codes 8-channel multiplexer with choice of inputs Unipolar single-ended Differential (GND sense) Pseudobipolar Throughput: 500 k SPS INL: ±0.5 LSB typical, ±1.5 LSB maximum (±23 ppm or FSR) Dynamic range: 93.3 d B SINAD: 91.5 d B at 20 k Hz THD: - 97 d B at 20 k Hz 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 patible with SPI, MICROWIRE, QSPI, and DSP Power dissipation 26 m W at 500 k SPS 5.2 μW at 100 SPS Standby current: 50 n A 20-lead 4 mm × 4 mm LFCSP package APPLICATIONS Battery-powered equipment Medical instruments: ECG/EKG Mobile munications: GPS Personal digital assistants Power line monitoring Data acquisition Seismic data acquisition systems Instrumentation Process control 16-Bit, 8-Channel, 500 k SPS Pul SAR ADC 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 TEMP SENSOR 16-BIT SAR SPI SERIAL INTERFACE ONE-POLE LPF SEQUENCER 1.8V VIO TO CNV SCK SDO DIN Figure 1. Table 1. Multichannel 14-/16-Bit Pul SAR® ADC Type Channels 250 k SPS 500 k SPS ADC Driver 14-Bit 8 AD7949 ADA4841-1 16-Bit 4 AD7682 ADA4841-1 16-Bit 8 AD7689 AD7699 ADA4841-1 07354-001 GENERAL DESCRIPTION The AD7699 is an 8-channel, 16-bit, charge redistribution successive approximation register (SAR) analog-to-digital converter (ADC) that operates from a single power supply, VDD. The AD7699 contains all ponents for use in a multichannel, low power data acquisition system, including a true 16-bit SAR ADC with no missing codes; an 8-channel low crosstalk multiplexer useful for configuring the inputs as single-ended (with or without...