AD7997: 内置I2C兼容接口的8通道、10位ADC，采用20引脚TSSOP封装
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。
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 特点
- 10-Bit ADC with Fast Conversion Time: 2 µs
- Eight Single-Ended Analog Input Channels
- Specified for VDD of 2.7 V to 5.5 V
- Low Power Consumption
- Fast Throughput Rate: - 188 kSPS
- Sequencer Operation
- Automatic Cycle Mode
- I²C® Compatible Serial Interface
- I²C® Interface supports:
- Standard, Fast, and High-Speed Modes
- Out of Range Indicator
- Pin-Selectable Addressing via AS
- Automatic Shutdown Mode: - 1 µA max
- 10位ADC,具有快速转换时间：2 µs
- 8个单端模拟输入通道
- 额定电压（VDD）：2.7 V至5.5 V
- 低功耗
- 高吞吐量：188 kSPS
- 序列器操作
- 自动循环模式
- I²C®兼容型串行接口
- I²C®接口支持：标准、快速及高速模式
- 超量程指示
- 可通过AS引脚选择寻址
- 自动关断模式：最大1 µA
AD7997 技术指标
- Resolution (Bits): 10bit
- # Chan: 8
- Sample Rate: 79kSPS
- Interface: I²C/Ser 2-Wire,Ser
- Analog Input Type: SE-Uni
- Ain Range: Uni (Vref)
- ADC Architecture: SAR
- Pkg Type: SOP
AD7997 建议配套产品
- Recommended Input Buffer Amplifiers for the AD7997
- For low distortion, low noise, dual supplies, we recommend the AD8599.
- For precision, low noise, single supply, we recommend the AD8605 family of operational amplifiers.
- For single supply, high speed, low power, we suggest the AD8031 or the dual AD8032.
- For precision, high speed, low cost, we recommend the quad AD8604.
- Recommended External References - 2.5V for the AD7997
- For applications requiring best accuracy, low noise, low drift, we recommend the ADR421 or AD780.
- For low noise, high output current applications, we recommend the ADR431.
- For wide supply applications, we recommend the ADR03 or AD780.
- For cost sensitive applications, we suggest the AD1582, ADR381 or ADR391.
- For the reference buffer amplifier, we recommend the AD8605.
- For applications requiring 2.048V to 4.096V, we recommend the REF191 reference family.
- Recommended Digital Isolators for the AD7997
- Recommended Power Solutions
- For selecting voltage regulator products, use ADIsimPower.
- For selecting supervisor products, use the Supervisor Parametric Search.
AD7997 功能框图
AD7997 芯片订购指南
| 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 |
AD7997 应用技术支持与电子电路设计开发资源下载
- AD7997 数据手册DataSheet下载 .pdf
- Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .pdf
- ADC模数转换器选型指南 . pdf
