GENERAL DESCRIPTION

The AD76901 is an 18-bit, successive approximation, analog-to-digital converter (ADC) that operates from a single power supply, VDD. It contains a low power, high speed, 18-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. On the CNV rising edge, it samples the voltage difference between the IN+ and IN− pins. The voltages on these pins swing in opposite phase between 0 V and REF. The reference voltage, REF, is applied externally and can be set up to the supply voltage.

FEATURES

18-bit resolution with no missing codes

Throughput: 400 kSPS

INL: ±0.75 LSB typical, ±1.5 LSB maximum (±6 ppm of FSR)

Dynamic range: 102 dB at 400 kSPS

Oversampled dynamic range: 125 dB at 1 kSPS

Noise-free code resolution: 20 bits at 1 kSPS

Effective resolution: 22.7 bits at 1 kSPS

SINAD: 101.5 dB at 1 kHz

THD: −125 dB at 1 kHz

True differential analog input range: ±VREF

0 V to VREF with VREF up to VDD on both inputs

No pipeline delay

Single-supply 5 V operation with

1.8 V/2.5 V/3 V/5 V logic interface

Proprietary serial interface

SPI/QSPI/MICROWIRE™/DSP compatible

Daisy-chain multiple ADCs and busy indicator

Power dissipation

4.25 μW at 100 SPS

4.25 mW at 100 kSPS

Standby current: 1 nA

10-lead package: MSOP (MSOP-8 size) and

3 mm × 3 mm LFCSP (SOT-23 size)

Pin-for-pin compatible with LFCSP/MSOP PulSAR ADCs

APPLICATIONS

Battery-powered equipment

Data acquisition

Seismic data acquisition systems

DVMs

Instrumentation

Medical instruments

EVAL-AD7690SDZ属于开发板，套件，编程器 > 评估板 - 模数转换器（ADC）。亚德诺半导体技术有限公司制造生产的EVAL-AD7690SDZ评估板 - 模数转换器（ADC）模数转换器 (ADC) 评估板是预装有元器件的电路板，用于提供特定 ADC 或器件工作实例。特定板上的 A/D 转换器数量从 3 到 32 不等，每秒采样率从 2.5 kHz 到 26 GHz 不等，输入电压范围从 0 到 8 Vp-p。