AD7716:CMOS、4通道、22位数据采集系统

AD7716: CMOS、4通道、22位数据采集系统

AD7716 功能框图 AD7716是用于信号采集系统的一个信号处理模块,内置4个能够处理最高带宽为584 Hz的通道,分辨率为22位,可用动态范围为111 dB（输入带宽36.5 Hz）至99 dB（输入带宽584 Hz）。该器件内置4个采用Σ-Δ技术的独立模数转换通道。Σ-Δ型ADC集成了片内数字滤波功能,因此可减轻系统的滤波要求。设备地址通过三个地址引脚编程实现。这可以使含有多达32个通道的数据采集系统以简单的方式进行设置。器件的输出字为32位数据,其中一位由DIN1输入的状态决定,并可用来指示输出字无效,例如在具有外部起搏器检测电路的ECG系统中,因为存在起搏脉冲而指示输出字无效。

The AD7716 is a signal processing block for data acquisition systems. It is capable of processing four channels with bandwidths of up to 584 Hz. Resolution is 22 bits and the usable dynamic range varies from 111 dB with an input bandwidth of 36.5 Hz to 99 dB with an input bandwidth of 584 Hz.The device consists of four separate A/D converter channels that are implemented using sigma-delta technology. Sigma-delta ADCs include on-chip digital filtering and, thus, the system filtering requirements are eased.Three address pins program the device address. This allows a data acquisition system with up to 32 channels to be set up in a simple fashion. The output word from the device contains 32 bits of data. One bit is determined by the state of the DIN1 input and may be used, for example, in an ECG system with an external pacemaker detect circuit to indicate that the output word is invalid because of the presence of a pacemaker pulse.

AD7716 技术指标

Resolution (Bits): 22bit
# Chan: 4
Sample Rate: 570kSPS
Interface: Ser
Analog Input Type: SE-Bip
Ain Range: Bip 2.5V
ADC Architecture: Sigma-Delta
Pkg Type: LCC,QFP

AD7716 芯片订购指

产品型号	封装	引脚	温度范围	包装和数量	报价*(100-499)	报价*1000 pcs
AD7716BPZ 产品状态: 量产	44 ld PLCC	44	工业	Tube, 27	$ 44.96	$ 34.43
AD7716BSZ 产品状态: 量产	44 ld MQFP (13.90mm wide)	44	工业	Tray, 96	$ 44.96	$ 34.43