The AD7997 is an 8 channel, 10-bit, high speed, low power, successive-approximation ADC. The part operates from a single 2.7 V to 5.5 V power supply and features a conversion time of 2 µs. The part contains an eight channel multiplexer and track/hold amplifier.
The AD7997 provides a two-wire serial interface, which is compatible with I²C interfaces. The part come in two versions, AD7997-0 and AD7997-1. Each version allows for a minimum of two different I²C addresses. The I²C interface on the AD7997-0 supports Standard and Fast I²C Interface Modes. The I²C Interface on the AD7997-1 supports Standard, Fast and two High-Speed I²C Interface Modes.
AD7997是一款8通道、10位、高速、低功耗、逐次逼近型ADC,采用2.7 V至5.5 V单电源供电,转换时间为2微秒（µs）。该器件内置8通道多路复用器和采样保持放大器。
AD7997提供与I²C接口兼容的双线式串行接口。该器件有两个版本：AD7997-0和AD7997-1,每个版本允许最少使用两个不同I²C地址。AD7997-0上的I²C接口支持标准和快速I²C两种接口模式。AD7997-1上的I²C接口支持标准、快速及两种高速I²C接口模式。
| Resolution (Bits) | 10bit | Interface | I²C/Ser 2-Wire,Ser |
| T-Put Rate | 79kSPS | Ain Range | Uni (Vref) |
| # Chan | 8 | SNR (dB) | 61dB |
| Supply V | Single(+3),Single(+3.3),Single(+5) | Pkg Type | SOP |
| Pwr Diss (max) | 7mW | -- | -- |
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD7997BRU-0 | 量产 | 20 ld TSSOP | 20 | 工业 |
| AD7997BRU-0REEL | 量产 | 20 ld TSSOP | 20 | 工业 |
| AD7997BRU-1 | 量产 | 20 ld TSSOP | 20 | 工业 |
| AD7997BRU-1REEL | 量产 | 20 ld TSSOP | 20 | 工业 |
| AD7997BRUZ-0 | 量产 | 20 ld TSSOP | 20 | 工业 |
| AD7997BRUZ-0REEL | 量产 | 20 ld TSSOP | 20 | 工业 |
| AD7997BRUZ-1 | 量产 | 20 ld TSSOP | 20 | 工业 |
| AD7997BRUZ-1REEL | 量产 | 20 ld TSSOP | 20 | 工业 |
| EVAL-AD7997EBZ | 量产 | 评估板 | - | 待定 |
