AD7656YSTZ: 250 kSPS、6通道、同步采样双极性16位AD
AD7656在单芯片内集成了6个16位、快速、低功耗、逐次逼近型ADC。内核采用4.5V至5.5 V单电源供电,最高吞吐量可达250 kSPS。该器件内置低噪声、宽带宽采样保持放大器,可处理最高8 MHz的输入频率。
转换过程与数据采集采用CONVST信号和内部振荡器进行控制。三个CONVST引脚允许三对ADC独立地进行同步采样。AD7656同时具有一个高速并行接口和一个高速串行接口,为器件与微处理器或DSP进行接口创造了条件。在串行接口模式下,AD7656允许多个ADC以菊花链形式连接至单个串行接口。该器件无流水线延迟。
AD7656可处理±10V范围的真双极性输入信号。AD7656内置一个2.5V内部基准电压,也可接受外部基准电压。如果通过VREF引脚输入3V外部基准电压,则该ADC可处理±12V真双极性模拟输入范围。对于此±12V输入范围,需采用±12V的VDD和VSS电源。
AD7656采用ADI公司的工业CMOS工艺（iCMOS™）制造,该技术平台兼具低电压和高电压CMOS、双极性及高电压DMOS工艺的优点。利用该工艺,AD7656不仅降低了功耗、减小了封装尺寸,而且能接受高电压双极性信号。AD7656可处理±10V范围和±5V范围的真双极性输入信号。该器件内置一个2.5V内部基准电压,也可接受外部基准电压。如果通过VREF引脚输入3V外部基准电压,则该ADC可处理±12V真双极性模拟输入范围。对于此±12V输入范围,需采用±12V的VDD和VSS电源。
The AD7656 contains six 16-bit, fast, low power, successive approximation ADCs all in the one package. The part AD7656 core operates from a single 4.5 V to 5.5 V power supply and features throughput rates up to 250 kSPS. The part contains low noise, wide bandwidth track-and-hold amplifiers that can handle input frequencies up to 8 MHz.
The conversion process and data acquisition are controlled using CONVST signals and an internal oscillator. Three CONVST pins allow independent simultaneous sampling of the three ADC pairs. The AD7656 has both a high speed parallel and serial interface allowing the devices to interface with microprocessors or DSPs. When in Serial interface mode the AD7656 has a Daisy Chain feature allowing multiple ADCs to connect to a single serial interface. There are no pipelined delays associated with the part.
The AD7656 can accommodate true bipolar input signals in the range ±10V . The AD7656 contains a 2.5V internal reference. The AD7656 can also accept an external reference. If a 3V external reference is applied to the VREF pin, the ADCs can accommodate a true bipolar ±12V analog input range. VDD and VSS supplies of ±12V are required for this ±12V input range.
The AD7656 is fabricated on Analog Devices’ Industrial CMOS process, iCMOS™ , a technology platform combining the advantages of low and high voltage CMOS, bipolar and high voltage DMOS processes. The process enables the AD7656 to accept high voltage bipolar signals in addition to reducing power consumption and package size. The AD7656 can accommodate true bipolar input signals in the ±10V range and ±5V range . It contains a 2.5V internal reference and can also accept an external reference. If a 3V external reference is applied to the VREF pin, the ADC can accommodate a true bipolar ±12V analog input range. VDD and VSS supplies of ±12V are required for this ±12V input range.
产品聚焦
- 片内集成6个16位250 kSPS ADC。
- 6个真双极性高阻抗模拟输入。
- AD7656同时具有一个并行接口和一个高速串行接口。
产品焦点 Product Highlights
- Six 16-bit 250 kSPS ADCs on board.
- Six true bipolar high impedance analog inputs.
- The AD7656 features both a parallel and a high speed serial interface.
产品应用领域 Applications
- Power Line Monitoring systems
- Instrumentation and control systems
- Multi-axis positioning systems
AD7656YSTZ 特点
- 6个独立16位ADC
- 6个真双极性模拟输入
- 引脚/软件可选范围：±10V、± 5V
- 高吞吐量：每通道250 kSPS
- 额定电压（AVCC）：4.75 V至5.25 V
- 低功耗：160mW（250 kSPS,5 V电源）
- 宽输入带宽：86 dB信噪比（SNR）（输入频率50 kHz时）
- 片内基准电压及缓冲
- 并行和串行接口
- 高速串行接口：SPI/QSPI/µWire/DSP兼容
- 无流水线延迟
- 待机模式：最大5µA
- 6 Independent 16-Bit ADCs
- 6 True Bipolar Analog Inputs
- Pin/Software Selectable Ranges:- ±10V, ±5V
- Fast throughput rate: 250 kSPS per channel
- Specified for AVCC of 4.75 V to 5.25 V
- Low power: 160mW at 250 kSPS with 5 V supplies
- Wide input bandwidth: 86 dB SNR at 50 kHz input frequency
- On-chip Reference and Reference Buffers
- Parallel and Serial Interface
- High speed serial interface: SPI/QSPI/µWire/DSP compatible
- No pipeline delays
- Standby Mode: -5 µA max
AD7656YSTZ 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD7656BST | Prodn | 64 ld LQFP (10x10mm) | 64 | 工业 |
| AD7656BSTZ | Prodn | 64 ld LQFP (10x10mm) | 64 | 工业 |
| AD7656BSTZ-500RL7 | Prodn | 64 ld LQFP (10x10mm) | 64 | 工业 |
| AD7656BSTZ-REEL | Prodn | 64 ld LQFP (10x10mm) | 64 | 工业 |
| AD7656YSTZ | Prodn | 64 ld LQFP (10x10mm) | 64 | 工业 |
| AD7656YSTZ-REEL | Prodn | 64 ld LQFP (10x10mm) | 64 | 工业 |
| EVAL-AD7656-1CBZ | Prodn | EVALUATION BOARDS | - | 待定 |
| EVAL-AD7656CBZ | Prodn | EVALUATION BOARDS | - | 待定 |
AD7656YSTZ 应用技术支持与电子电路设计开发资源下载
- AD7656 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
