ANALOG DEVICES模块AD7714YNZ产品介绍
AD7714 是一款完整的模拟前端，适用于低频测量应用。该器件直接从传感器接收低电平信号并输出串行数字字。它采用 sigma-delta 转换技术，可实现高达 24 位的无失码性能。输入信号应用于基于模拟调制器的专有可编程增益前端。调制器输出由片上数字滤波器处理。该数字滤波器的第一个陷波可通过片上控制寄存器进行编程，从而允许调整滤波器截止和稳定时间。
该器件具有三个差分模拟输入（也可配置为五个伪差分模拟输入）以及一个差分参考输入。因此，AD7714 可为包含多达五个通道的系统执行所有信号调节和转换。最近，现有系列中又添加了一个新 Y 级。与 A 级相比，这个新级具有更大的工作温度范围、SCLK 和 DIN 上的施密特触发器输入、更严格的线性度规格、更低的功耗，并且采用更小的封装。
AD7714 非常适合用于基于智能微控制器或 DSP 的系统。它具有一个串行接口，可以配置为三线操作。可以使用串行端口在软件中配置增益设置、信号极性和通道选择。AD7714 提供自校准、系统校准和后台校准选项，还允许用户读取和写入片上校准寄存器。
CMOS 结构确保非常低的功耗，断电模式可将待机功耗降低至 3 V 时的典型值 15 µW。A 级的最低工作电压为 3 V，Y 级的最低工作电压为 2.7 V。A 级采用 24 引脚、0.3 英寸宽的塑料双列直插式封装 (DIP)；24 引脚小外形 (SOIC) 封装和 28 引脚缩小外形封装 (SSOP)。新的 Y 级产品采用 24 引脚、0.3 英寸宽的塑料双列直插式封装 (DIP)；24 引线小外形 (SOIC) 封装和 24 引线薄型缩小外形封装 (TSSOP)。
特性
电荷平衡 ADC
24 位无缺失代码
0.0015% 非线性
五通道可编程增益前端
增益从 1 到 128
可配置为三个全差分
输入或五个伪差分输入
三线串行接口
SPI®、QSPI™、MICROWIRE™ 和 DSP 兼容
3 V (AD7714-3) 或 5 V (AD7714-5) 操作
低电流（典型值 350 µA），断电（典型值 5 µA）
低噪声（<150 nV rms）
具有可编程滤波器截止频率的低通滤波器
The AD7714 is a complete analog front end for low-frequency measurement applications. The device accepts low level signals directly from a transducer and outputs a serial digital word. It employs a sigma-delta conversion technique to realize up to 24 bits of no missing codes performance. The input signal is applied to a proprietary programmable gain front end based around an analog modulator. The modulator output is processed by an on-chip digital filter. The first notch of this digital filter can be programmed via the on-chip control register allowing adjustment of the filter cutoff and settling time.
The part features three differential analog inputs (which can also be configured as five pseudo-differential analog inputs) as well as a differential reference input. The AD7714 thus performs all signal conditioning and conversion for a system consisting of up to five channels. A new Y grade has recently been added to the existing range. Compared to the A grades this new grade has an extended operating temperature range, schmitt trigger inputs on SCLK and DIN, tighter linearity specifications, lower power consumption and is available in a smaller package.
The AD7714 is ideal for use in smart microcontroller- or DSP-based systems. It features a serial interface that can be configured for three-wire operation. Gain settings, signal polarity and channel selection can be configured in software using the serial port. The AD7714 provides self-calibration, system calibration and background calibration options and also allows the user to read and write the on-chip calibration registers.
CMOS construction ensures very low power dissipation, and the power-down mode reduces the standby power consumption to 15 µW typical at 3 V. Minimum operating voltage for the A grades is 3 V and 2.7 V for the Y grades. The A grades are available in a 24-pin, 0.3 inch-wide, plastic dual-in-line package (DIP); a 24 lead small outline (SOIC) package and a 28-lead shrink small outline package (SSOP). The new Y grade is available in a 24-pin, 0.3 inch-wide, plastic dual-in-line package (DIP); a 24 lead small outline (SOIC) package and a 24-lead Thin Shrink Small Outline Package (TSSOP).
Features
Charge Balancing ADC
24 Bits No Missing Codes
0.0015% Nonlinearity
Five-Channel Programmable Gain Front End
Gains from 1 to 128
Can Be Configured as Three Fully Differential
Inputs or Five Pseudo-Differential Inputs
Three-Wire Serial Interface
SPI®, QSPI™, MICROWIRE™ and DSP Compatible
3 V (AD7714-3) or 5 V (AD7714-5) Operation
Low Current (350 µA typ) with Power-Down (5 µA typ)
Low Noise (<150 nV rms)
Low-Pass Filter with Programmable Filter Cutoffs
ANALOG DEVICES模块AD7714系列其他常用型号：
ANALOG DEVICES AD7714YRZ
ANALOG DEVICES AD7714ARZ-5REEL
ANALOG DEVICES AD7714ANZ-5
ANALOG DEVICES AD7714ARZ-5
ANALOG DEVICES AD7714ARSZ-5
ANALOG DEVICES AD7714YRUZ-REEL7
ANALOG DEVICES AD7714YRZ-REEL7
ANALOG DEVICES AD7714YRZ-REEL
ANALOG DEVICES AD7714YNZ
ANALOG DEVICES AD7714ARSZ-3REEL
ANALOG DEVICES AD7714ARSZ-3
ANALOG DEVICES AD7714YRUZ-REEL
ANALOG DEVICES AD7714-3EBZ
ANALOG DEVICES AD7714ARZ-3REEL
ANALOG DEVICES AD7714ARSZ-5REEL
ANALOG DEVICES AD7714YRUZ
ANALOG DEVICES AD7714ARZ-3
ANALOG DEVICES module NEW + ORIGINAL+ ONE YEAR WARRANTY
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ANALOG DEVICES模块AD7714YNZ产品参数
