GENERAL DESCRIPTION

The AD79841 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 and a versatile serial interface port. On the CNV rising edge, the AD7984 samples the voltage difference between the IN+ and IN− pins. The voltages on these pins usually swing in opposite phases between 0 V and VREF. The reference voltage, REF, is applied externally and can be set independent of the supply voltage, VDD.

FEATURES

High performance

True differential analog input range: ±VREF

0 V to VREF with VREF between 2.9 V to 5 V

Easy to drive with the ADA4941

Throughput: 1.33 MSPS

Zero latency architecture

18-bit resolution with no missing codes

INL: ±2.25 LSB maximum

Dynamic range: 99.7 dB, VREF = 5 V

SNR: 98.5 dB at fIN = 1 kHz, VREF = 5 V

THD: −110.5 dB at fIN = 1 kHz, VREF = 5 V

SINAD: 97.5 dB at fIN = 1 kHz, VREF = 5 V

Low power dissipation

Single-supply 2.5 V operation with 1.8 V/2.5 V/3 V/5 V

logic interface

5.3 mW at 1.33 MSPS (VDD only)

10.5 mW at 1.33 MSPS (total)

80 μW at 10 kSPS

Proprietary serial interface

SPI/QSPI/MICROWIRE™/DSP compatible

Ability to daisy-chain multiple ADCs and busy indicator

10-lead MSOP and 10-lead, 3 mm × 3 mm LFCSP

Wide operating temperature range: −40°C to +85°C

APPLICATIONS

Automated test equipment

Data acquisition systems

Medical instruments

Machine automation

EVAL-AD7984CBZ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-AD7984CBZ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。