The AD7988-1/AD7988-5 are 16-bit, successive approximation analog-to-digital converters (ADCs) that are powered by a single-supply VDD. The AD7988-1 provides 100 kSPS throughput and the AD7988-5 provides 500 kSPS throughput. Both are low-power, 16-bit sampling ADCs with multi-function serial interface ports. At the rising edge of the CNV, the device samples the analog input voltage difference between IN+ and IN-, ranging from 0 V to REF. The voltage reference (REF) is provided externally and can be independent of the supply voltage (VDD).
The SPI-compatible serial interface also uses SDI inputs to daisy-chain several ADCs to a single-three-wire bus. It is compatible with 1.8 V, 2.5 V, 3 V, and 5 V logic when using the stand-alone VIO.
The AD7988 is available in a 10-pin MSOP package or a 10-pin QFN (LFCSP) package and has an operating temperature range of -40°C to +125°C.
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- Battery-powered devices
- Low-power data acquisition system
- Portable medical instruments
- Automated testing equipment
-Data acquisition
-correspondence
- 低功耗：- AD7988-1：700 uW (100 kSPS)
- 16位分辨率、无失码
- 吞吐速率：100 kSPS
- 积分非线性(INL)：典型值±0.6 LSB，最大值±1.25 LSB
- 信纳比(SINAD)：91.25 dB（10 kHz）
- 总谐波失真(THD)：-114dB（10 kHz）
- 宽工作温度范围：-40°C至+125°C
- 无流水线延迟
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