GENERAL DESCRIPTION

The AD7988-1/AD7988-5 are 16-bit, successive approximation, analog-to-digital converters (ADC) that operate from a single power supply, VDD. The AD7988-1 offers a 100 kSPS throughput, and the AD7988-5 offers a 500 kSPS throughput. They are low power, 16-bit sampling ADCs with a versatile serial interface port. On the CNV rising edge, they sample an analog input, IN+, between 0 V to VREF with respect to a ground sense, IN?. The reference voltage, REF, is applied externally and can be set independent of the supply voltage, VDD.

FEATURES

Low power dissipation

AD7988-5: 3.5 mW @ 500 kSPS

AD7988-1: 700 μW @ 100 kSPS

16-bit resolution with no missing codes

Throughput: 100 kSPS/500 kSPS options

INL: ±0.6 LSB typical, ±1.25 LSB maximum

SINAD: 91.5 dB @ 10 kHz

THD: ?114 dB @ 10 kHz

Pseudo differential analog input range

0 V to VREF with VREF from 2.5 V to 5.5 V

Any input range and easy to drive with the ADA4841-1

No pipeline delay

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

SPI-/QSPI-/MICROWIRE?-/DSP-compatible serial interface

Daisy-chain multiple ADCs

10-lead MSOP and 10-lead, 3 mm × 3 mm LFCSP (QFN), same space as SOT-23

Wide operating temperature range: ?40°C to +125°C

AD7940屬于集成電路（IC） > 模數(shù)轉(zhuǎn)換器（ADC）。亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD7940模數(shù)轉(zhuǎn)換器（ADC）模數(shù)轉(zhuǎn)換器（ADC、A/D 或 A 轉(zhuǎn) D）對模擬信號進(jìn)行采樣，例如由麥克風(fēng)采集的聲音或傳感器的輸出，然后將其轉(zhuǎn)換為數(shù)字信號。一般來說，數(shù)字輸出是二進(jìn)制補(bǔ)碼二進(jìn)制數(shù)，與輸入成比例。輸入類型可能是差分、偽差分或單端輸入。模數(shù)轉(zhuǎn)換器可按照位數(shù)、采樣率、輸入數(shù)、接口、轉(zhuǎn)換器數(shù)和架構(gòu)（例如自適應(yīng)增量、雙斜率、折疊、流水線、SAR、三角積分、兩步式）進(jìn)行選擇。