AD7771 Datasheet, PDF (1/14 Pages) Analog Devices – 8-Ch, 24-Bit Simultaneous Sampling ADC

8-Ch, 24-Bit Simultaneous Sampling ADC
Preliminary Technical Data
AD7771
FEATURES
8 Channel 24-Bit Simultaneous Sampling ADCs
Sample Rate Converter (SRC) for coherent sampling
Adjustable Phase Synchronization
PGA per Channel (gain 1, 2, 4, 8)
Low Input Bias Current: 6nA
Single Ended or True Differential Inputs
128ksps Output Data Rate/per channel
Internal 2.5V reference
Optimize Power Dissipation & Performance
Two Power Modes:
High Resolution Mode
Low Power Mode
Low Latency Sinc3 and Sinc5 Filter Paths
Low Resolution SAR ADC for System and Chip Diagnostics
FUNCTIONAL BLOCK DIAGRAM
POWER SUPPLY
Bipolar (±1.65V Supply) or Unipolar (3.3V Supply) Supply
Digital/IO Supply 1.8V to 3.6V
Performance Temperature range: –40°C to +105°C
Functional Temperature range: –40°C to +125°C
PERFORMANCE
Combined AC & DC Performance
112dB SNR/Dynamic Range at 8 kSPS
-108dB THD
±15ppm INL, ±250 uV Offset Error, ±0.1% Gain Error
±5 ppm/°C typ Internal Reference TempCo
APPLICATIONS
Power quality and Measurement Applications
General Purpose Data Acquisition Applications
Industrial Process Control Applications
Figure 1 AD7771 Functional Block Diagram
Rev. PrC
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