AD7606/AD7606-6/AD7606-4
GENERAL DESCRIPTION
The AD7606
1
/AD7606-6/AD7606-4 are 16-bit, simultaneous
sampling, analog-to-digital data acquisition systems (DAS) with
eight, six, and four channels, respectively. Each part contains
analog input clamp protection, a second-order antialiasing filter,
a track-and-hold amplifier, a 16-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 AD7606/AD7606-6/AD7606-4 operate 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 AD7606 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
AD7606/AD7606-6/AD7606-4 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.
1
Patent pending.
Rev. 0 | Page 3 of 36
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