AD7608 Analog Devices, AD7608 Datasheet - Page 3

• Manufacturer Part Number: AD7608
• Description: 8-Channel DAS with 18-Bit, Bipolar, Simultaneous Sampling ADC
• Manufacturer: Analog Devices

Specifications of AD7608

• Resolution (bits): 18bit
• # Chan: 8
• Sample Rate: 200kSPS
• Interface: Par,Ser,SPI
• Analog Input Type: Diff-Bip
• Ain Range: Bip 10V,Bip 5.0V
• Adc Architecture: SAR
• Pkg Type: QFP

Data Sheet
GENERAL DESCRIPTION
The AD7608 is an 18-bit, 8-channel 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.
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The AD7608 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 AD7608 has 1 MΩ analog input impedance
regardless of sampling frequency. The single supply operation,
on-chip filtering, and high input impedance eliminate the need
for driver op amps and external bipolar supplies. The AD7608
antialiasing filter has a 3 dB cutoff frequency of 22 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.
AD7608