EVAL-AD7739EBZ: 8通道、4 kHz、24位Σ-Δ型ADC
AD7739是一款高精度、高吞吐量模拟前端,可实现真16位峰－峰值分辨率及250 us总转换时间（4 kHz通道切换）,非常适合高分辨率多路复用应用。
AD7739采用Σ-Δ架构,具有最高24位无失码性能。用户可通过简易数字接口对该器件进行配置,从而平衡噪声性能与数据吞吐量,实现最高15.4 kHz的转换速率。该模拟前端可配置为8个单端输入或4个全差分输入通道,输入范围包括单极性或双极性625 mV、1.25 V和2.5 V,以及从AGND+200 mV至AVDD-300 mV的共模输入电压。此款ADC支持按通道进行系统校准选项。数字串行接口可配置用于三线式操作,并且与微控制器和数字信号处理器兼容。所有接口输入均为施密特触发式。该器件的额定温度范围为扩展工业温度范围：–40°C至+105°C,采用24引脚TSSOP封装。
The AD7739 is a high precision, high throughput analog front end. True 16-bit peak-to-peak resolution is achievable with a total conversion time of 250 us (4 kHz channel switching) making it ideally suitable for high resolution multiplexing applications.
The AD7739 is based on a sigma-delta architecture and features up to 24 bits of no missing codes performance. The part can be configured via a simple digital interface, which allows users to balance the noise performance against data throughput up to a 15.4 kHz conversion rate. The analog front end features 8 single-ended or 4 fully differential input channels with unipolar or bipolar 625 mV, 1.25 V and 2.5 V input ranges and accepts a common mode input voltage from 200 mV above AGND to AVDD-300 mV. The ADC supports per channel system calibration options.The digital serial interface can be configured for three-wire operation and is compatible with microcontrollers and digital signal processors. All interface inputs are Schmitt triggered.The part is specified for operation over the extended industrial temperature range of -40oC to +105oC and is available in 24-lead TSSOP package.
EVAL-AD7739EBZ 特点
- 高分辨率ADC：
- 24位无失码
- ±0.0015%非线性度 - 优化快速通道开关：
- 18位峰－峰值分辨率（21位有效位、500 Hz）
- 16位峰－峰值分辨率（19位有效位、4 Hz）
- 片内按通道系统校准 - 可配置输入：8个单端输入或4个全差分输入
- 输入范围：
- +625 mV、±625 mV、+1.25 V、±1.25 V、+2.5 V、±2.5 V - 三线式串行接口：
- SPI(R)、QSPITM、MICROWIRETM、DSP兼容
- 施密特触发器逻辑输入 - 单电源工作：
- 5 V模拟电源
- 3 V或5 V数字电源 - 封装：24引脚TSSOP
- High resolution ADC
- 24 bits no missing codes
- ±0.0015% Nonlinearity - Optimized for Fast Channel Switching
- 18-Bits p-p Resolution (21 Bits Effective) at 500 Hz
- 16-Bits p-p Resolution (19 Bits Effective) at 4 kHz
- On-Chip Per Channel System Calibration - Configurable Inputs 8 Single-Ended or 4 Fully Differential
- Input Ranges
- +625 mV, ±625 mV, +1.25 V, ±1.25 V, +2.5 V, ±2.5 V - 3-Wire Serial Interface SPI(R), QSPITM, MICROWIRETM and DSP Compatible
- Schmitt Trigger on Logic Inputs - Single-Supply Operation
- 5 V Analog Supply
- 3 V or 5 V Digital Supply - Package: 24-Lead TSSOP
EVAL-AD7739EBZ 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD7739BRU | 量产 | 24 ld TSSOP | 24 | 工业 |
| AD7739BRU-REEL | 量产 | 24 ld TSSOP | 24 | 工业 |
| AD7739BRUZ | 量产 | 24 ld TSSOP | 24 | 工业 |
| AD7739BRUZ-REEL7 | 量产 | 24 ld TSSOP | 24 | 工业 |
| EVAL-AD7739EBZ | 量产 | 评估板 | - | 待定 |
EVAL-AD7739EBZ 应用技术支持与电子电路设计开发资源下载
- AD7739 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