AD7706BR: 3V或5V、1mW、3通道伪差分、16位Σ-Δ ADC
AD7705和AD7706均为完全16位、低成本Σ-Δ ADC,适合直流测量和低频交流测量应用,其具有低功耗（3 V时最大值为1 mW ）特性,因而可用于环路供电、电池供电或本地供电的应用中。片内可编程增益放大器提供从1至128的增益设置,无需使用外部信号调节硬件便可接受低电平和高电平模拟输入。
AD7705拥有两个差分通道,而AD7706则拥有一个差分通道和两个伪差分通道。在定制比率应用器件时,差分基准电压输入还能提供极大的灵活性。
The AD7705 and AD7706 are complete 16-bit, low-cost, Sigma Delta ADCs intended for dc and low-frequency ac measurement applications. Their low power (1 mW max @ 3 V) allows them to be used in loop-powered, battery-powered or locally-powered applications. The on-chip Programmable Gain Amplifier with gain settings from I through 128 can accommodate both low-level and high-level analog inputs with no external signal conditioning hardware.
The AD7705 has two differential channels while the AD7706 has one differential and two pseudo-differential channels. Differential reference inputs also allow maximum flexibility in tailoring the device for use in ratiometric applications.
AD7706BR 特点
- 3个伪差分输入通道ADC
- 16位无失码
- 0.003%非线性度 - 可编程增益前端
- 增益范围：1至128 - 提供模拟输入缓冲
- 工作电压：2.7 V至3.3 V或4.75 V至5.25 V
- 三线式串行接口
- SPI(R), QSPITM, MICROWIRETM, DSP 兼容
- SCLK上可接受施密特触发器输入 - 功耗：1 mW（最大值、3 V）
- 待机电流：最大8 uA
- 16引脚DIP、16引脚SOIC和TSSOP封装
- Three Pseudo Differential Input Channel ADCs
- 16 Bits No Missing Codes
- 0.003% Nonlinearity - Programmable Gain Front End
- Gains from 1 to 128 - Ability to Buffer the Analog Input
- 2.7 V to 3.3 V or 4.75 V to 5.25 V Operation
- Three-Wire Serial Interface
- SPI(R), QSPITM, MICROWIRETM and DSP Compatible
- Schmitt Trigger Input on SCLK - Power Dissipation 1 mW max @ 3 V
- Standby Current 8 uA max
- 16-Lead DIP, 16-Lead SOIC and TSSOP Packages
AD7706BR 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD7706BN | Prodn | 16 ld PDIP | 16 | 工业 |
| AD7706BNZ | Prodn | 16 ld PDIP | 16 | 工业 |
| AD7706BR | Prodn | 16 ld SOIC - Wide | 16 | 工业 |
| AD7706BR-REEL | Prodn | 16 ld SOIC - Wide | 16 | 工业 |
| AD7706BR-REEL7 | Prodn | 16 ld SOIC - Wide | 16 | 工业 |
| AD7706BRU | Prodn | 16 ld TSSOP | 16 | 工业 |
| AD7706BRU-REEL | Prodn | 16 ld TSSOP | 16 | 工业 |
| AD7706BRU-REEL7 | Prodn | 16 ld TSSOP | 16 | 工业 |
| AD7706BRUZ | Prodn | 16 ld TSSOP | 16 | 商业 |
| AD7706BRUZ-REEL | Prodn | 16 ld TSSOP | 16 | 工业 |
| AD7706BRUZ-REEL7 | Prodn | 16 ld TSSOP | 16 | 工业 |
| AD7706BRZ | Prodn | 16 ld SOIC - Wide | 16 | 工业 |
| AD7706BRZ-REEL | Prodn | 16 ld SOIC - Wide | 16 | 工业 |
| AD7706BRZ-REEL7 | Prodn | 16 ld SOIC - Wide | 16 | 工业 |
| EVAL-AD7706EBZ | Prodn | EVALUATION BOARDS | - | 待定 |
AD7706BR 应用技术支持与电子电路设计开发资源下载
- AD7706 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