Datasheet Analog Devices AD7766 — 数据表

24-Bit, 8.5 mW, 109 dB,
128 kSPS/64 kSPS/32 kSPS ADCs
AD7766
FEATURES GENERAL DESCRIPTION Oversampled successive approximation (SAR) architecture
High performance ac and dc accuracy, low power
115.5 dB dynamic range, 32 kSPS (AD7766-2)
112.5 dB dynamic range, 64 kSPS (AD7766-1)
109.5 dB dynamic range, 128 kSPS (AD7766)
−112 dB THD
Exceptionally low power
8.5 mW, 32 kSPS (AD7766-2)
10.5 mW, 64 kSPS (AD7766-1)
15 mW, 128 kSPS (AD7766)
High dc accuracy
24 bits, no missing codes (NMC)
INL: ±6 ppm (typical), ±15 ppm (maximum)
Low temperature drift
Zero error drift: 15 nV/°C
Gain error drift: 0.4 ppm/°C
On-chip low-pass FIR filter
Linear phase response
Pass-band ripple: ±0.005 dB
Stop-band attenuation: 100 dB …

24-Bit, 8.5 mW, 115 dB, 32 kHz ADC
AD7766-2-KGD Known Good Die
FEATURES FUNCTIONAL BLOCK DIAGRAM APPLICATIONS
Low power PCI/USB data acquisition systems
Low power wireless acquisition systems
Vibration analysis
Instrumentation
High precision medical acquisition AVDD AGND MCLK
VREF+
VIN+
SUCCESSIVE
APPROXIMATION
ADC SERIAL INTERFACE
AND
CONTROL LOGIC REFGND CS AD7766-2-KGD
SCLK DRDY SDO SDI Figure 1. The AD7766-2-KGD includes an on-board digital filter (complete
with linear phase response) that acts to eliminate out-of-band
noise by filtering the oversampled input voltage. The oversampled
architecture also reduces front-end antialiasing requirements.
Other features of the AD7766-2-KGD include a SYNC/PD
(synchronization/power-down) pin that allows synchronizing
of multiple AD7766-2-KGD devices or that powers down
the AD7766-2-KGD. The addition of an SDI pin provides the …