参数资料
型号: AD7609BSTZ
厂商: ANALOG DEVICES INC
元件分类: ADC
英文描述: 8-CH 18-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL/PARALLEL ACCESS, PQFP64
封装: ROHS COMPLIANT, MS-026BCD, LQFP-64
文件页数: 23/35页
文件大小: 1737K
代理商: AD7609BSTZ
Preliminary Technical Data
AD7609
Rev. PrD | Page 3 of 35
GENERAL DESCRIPTION
The AD76091 is an 18-bit, 8-channel true differential,
simultaneous sampling analog-to-digital data acquisition
system (DAS). The part contains analog input clamp protection,
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.
1 Patent pending.
The AD7609 operates from a single 5 V supply and can
accommodate ±10 V and ±5 V true bipolar 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 MΩ analog input impedance
regardless of sampling frequency. The single supply operation,
on chip filtering and high input impedance eliminates the need
for driver op amps and external bipolar supplies. The AD7609
antialiasing filter has a 3 dB cutoff frequency of 33 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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