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24-Bit, 8/10-Channel, Low Voltage, Low Power, Sigma Delta ADC
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a 8-/10-Channel, Low Voltage,
Low Power, ⌺-⌬ ADCs
AD7708/AD7718
GENERAL DESCRIPTION FEATURES
8-/10-Channel, High Resolution ⌺-⌬ ADCs
AD7708 Has 16-Bit Resolution
AD7718 Has 24-Bit Resolution
Factory-Calibrated
Single Conversion Cycle Setting
Programmable Gain Front End
Simultaneous 50 Hz and 60 Hz Rejection
VREF SelectTM Allows Absolute and Ratiometric
Measurement Capability
Operation Can Be Optimized for
Analog Performance (CHOP = 0) or
Channel Throughput (CHOP = 1) The AD7708/AD7718 are complete analog front-ends for low
frequency measurement applications. The AD7718 contains a
24-bit Σ-∆ ADC with PGA and can be configured as 4/5 fullydifferential input channels or 8/10 pseudo-differential input
channels. Two pins on the device are configurable as analog
inputs or reference inputs. The AD7708 is a 16-bit version of
the AD7718. Input signal ranges from 20 mV to 2.56 V can be
directly converted using these ADCs. Signals can be converted
directly from a transducer without the need for signal conditioning.
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