参数资料
型号: AD7609BSTZ-RL
厂商: Analog Devices Inc
文件页数: 23/36页
文件大小: 0K
描述: IC DAS W/ADC 18BIT 8CH 64LQFP
标准包装: 1,500
类型: 数据采集系统(DAS),ADC
分辨率(位): 18 b
采样率(每秒): 200k
数据接口: DSP,MICROWIRE?,并联,QSPI?,串行,SPI?
电压电源: 模拟和数字
电源电压: 2.3 V ~ 5 V,4.75 V ~ 5.25 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-LQFP(10x10)
包装: 带卷 (TR)
Data Sheet
AD7609
Rev. A | Page 3 of 36
GENERAL DESCRIPTION
The AD7609 is an 18-bit, 8-channel, true differential,
simultaneous sampling analog-to-digital data acquisition
system (DAS). The part contains analog input clamp protection,
a second-order antialiasing filter, a track-and-hold amplifier, an
18-bit charge redistribution successive approximation analog-
to-digital converter (ADC), a flexible digital filter, a 2.5 V
reference and reference buffer, and high speed serial and
parallel interfaces.
The AD7609 operates from a single 5 V supply and can
accommodate ±10 V and ±5 V true bipolar differential input
signals while sampling at throughput rates up to 200 kSPS for
all channels. The input clamp protection circuitry can tolerate
voltages up to ±16.5 V. The AD7609 has 1 M analog input
impedance regardless of sampling frequency. The single supply
operation, on-chip filtering, and high input impedance elimi-
nate the need for driver op amps and external bipolar supplies.
The AD7609 antialiasing filter has a 3 dB cutoff frequency of
32 kHz and provides 40 dB antialias rejection when sampling
at 200 kSPS. The flexible digital filter is pin driven, yields
improvements in SNR, and reduces the 3 dB bandwidth.
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