AD7982集成电路（IC）的模数转换器（ADC）规格书PDF中文资料

AD7982属于集成电路（IC）的模数转换器（ADC）。由亚德诺半导体技术有限公司制造生产的AD7982模数转换器（ADC）模数转换器（ADC、A/D 或 A 转 D）对模拟信号进行采样，例如由麦克风采集的声音或传感器的输出，然后将其转换为数字信号。一般来说，数字输出是二进制补码二进制数，与输入成比例。输入类型可能是差分、伪差分或单端输入。模数转换器可按照位数、采样率、输入数、接口、转换器数和架构（例如自适应增量、双斜率、折叠、流水线、SAR、三角积分、两步式）进行选择。

GENERAL DESCRIPTION

The AD7982 is an 18-bit, successive approximation, analog-to-digital converter (ADC) that operates from a single power supply, VDD. The AD7982 contains a low power, high speed, 18-bit sampling ADC and a versatile serial interface port. On the CNV rising edge, the AD7982 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, VREF, is applied externally and can be set independent of the supply voltage, VDD. Its power scales linearly with throughput.

FEATURES

High performance

True differential analog input range: ±VREF

0 V to VREF with VREF between 2.5 V to 5 V

Easy to drive with the ADA4941-1 or ADA4940-1

Throughput: 1 MSPS

Zero latency architecture

18-bit resolution with no missing codes

INL: ±1 LSB typical, ±2 LSB maximum

Dynamic range: 99 dB, VREF = 5 V

SNR: 98 dB at fIN = 1 kHz, VREF = 5 V

THD: −119 dB at fIN = 1 kHz, VREF = 5 V

SINAD: 97 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, and

5 V logic interface

4 mW at 1 MSPS (VDD only)

7 mW at 1 MSPS (total)

70 μW at 10 kSPS

Proprietary serial interface

SPI-/QSPI™/ MICROWIRE™-/DSP-compatible1

Ability to daisy-chain multiple ADCs and busy indicator

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

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

APPLICATIONS

Automated test equipment

Data acquisition systems

Medical instruments

Machine automation