GENERAL DESCRIPTION
●The AD7766/AD7766-1/AD7766-2 are high performance, 24-bit, oversampled SAR analog-to-digital converters (ADCs). The AD7766/AD7766-1/AD7766-2 combine the benefits of a large dynamic range and input bandwidth, consuming 15 mW, 10.5 mW, and 8.5 mW power, respectively, and are contained in a 16-lead TSSOP package.
●FEATURES
●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
●2.5 V supply with 1.8 V/2.5 V/3 V/3.6 V logic interface options
●Flexible interfacing options
● Synchronization of multiple devices
● Daisy-chain capability
● Power-down function
●Temperature range: −40°C to +105°C
●APPLICATIONS
●Low power PCI/USB data acquisition systems
●Low power wireless acquisition systems
●Vibration analysis
●Instrumentation
●High precision medical acquisition
