AD7888: 2.7 V至5.25 V、微功耗、8通道、125 kSPS、12位ADC,采用16引脚TSSOP封装
AD7888是一款高速、低功耗、12位模数转换器（ADC），采用2.7 V至5.25 V单电源供电，吞吐量可达125 kSPS。通过输入采样保持功能可在500 ns内采集一个信号，并采用单端采样方案。AD7888内置8个单端模拟输入AIN1～AIN8，每一通道上的模拟输入范围均为0至V REF，该器件能够转换最高3 MHz的全功率信号。
AD7888具有一个2.5 V片内基准电压源，可用作该ADC的基准电压源。用户可通过REF IN/REF OUT引脚获得这一基准电压。或者，也可以在此引脚加载一个外部基准，为AD7888提供外部基准电压，此外部基准电压的范围为1.2 V至V DD。CMOS结构可确保获得低功耗，正常工作模式下的典型功耗为2 mW，省电模式下为3 µW。这款器件提供两种封装：16引脚窄体小形集成封装（SOIC）和16引脚超薄紧缩小型封装（TSSOP）。
The AD7888 is a high speed, low power, 12-bit ADC that operates from a single 2.7 V to 5.25 V power supply. The AD7888 is capable of a 125 kSPS throughput rate. The input track-and-hold acquires a signal in 500 ns and features a single ended sampling scheme. The AD7888 contains eight single-ended analog inputs, AIN1 through AIN8. The analog input on each of these channels is from 0 to VREF. The part is capable of converting full power signals up to 3 MHz.
The AD7888 features an on-chip 2.5 V reference that can be used as the reference source for the A/D converter. The REF IN/REF OUT pin allows the user access to this reference. Alternatively, this pin can be overdriven to provide an external reference voltage for the AD7888. The voltage range for this external reference is from 1.2 V to VDD.CMOS construction ensures low power dissipation of typically 2 mW for normal operation and 3 µW in power-down mode. The part is available in a 16-lead narrow body small outline (SOIC) and a 16-lead thin small shrink outline (TSSOP) package
AD7888 特性
- 额定电压（V DD）：2.7 V至5.25 V
- 灵活的功耗/吞吐量管理
- 关断模式：最大1 µA
- 8个单端输入
- 串行接口：SPI®/QSPI™/MICROWIRE™/DSP兼容
- 16引脚窄体SOIC和TSSOP封装
- Specified for VDD of 2.7 V to 5.25 V
- Flexible Power/Throughput Rate Management
- Shutdown Mode: 1 µA Max
- Eight Single-Ended Inputs
- Serial Interface:SPI®/QSPI™/MICROWIRE™/DSP Compatible
- 16-Lead Narrow SOIC and TSSOP Packages
AD7888 技术指标
- Resolution (Bits): 12bit
- # Chan: 8
- Sample Rate: 125kSPS
- Interface: Ser,SPI
- Analog Input Type: SE-Uni
- Ain Range: Uni 2.5V,Uni (Vref)
- ADC Architecture: SAR
- Pkg Type: SOIC,SOP
AD7888 功能框图
AD7888 芯片订购指南
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD7888ARU | 量产 | 16 ld TSSOP | 16 | 工业 |
| AD7888ARU-REEL | 量产 | 16 ld TSSOP | 16 | 工业 |
| AD7888ARU-REEL7 | 量产 | 16 ld TSSOP | 16 | 工业 |
| AD7888ARUZ | 量产 | 16 ld TSSOP | 16 | 工业 |
| AD7888ARUZ-REEL | 量产 | 16 ld TSSOP | 16 | 工业 |
| AD7888ARZ | 量产 | 16 ld SOIC | 16 | 工业 |
| AD7888ARZ-REEL | 量产 | 16 ld SOIC | 16 | 工业 |
| AD7888ARZ-REEL7 | 量产 | 16 ld SOIC | 16 | 工业 |
| AD7888BR | 量产 | 16 ld SOIC | 16 | 工业 |
| AD7888BR-REEL | 量产 | 16 ld SOIC | 16 | 工业 |
| AD7888BR-REEL7 | 量产 | 16 ld SOIC | 16 | 工业 |
| AD7888BRZ | 量产 | 16 ld SOIC | 16 | 工业 |
| EVAL-AD7888CB | 量产 | 评估板 | - | 待定 |
AD7888 应用技术支持与电子电路设计开发资源下载
- AD7888 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
