Analog Devices Inc. AD7768BSTZ

Description
The AD7768 is an 8-channel, 24-bit, simultaneous sampling analog-to-digital converter (ADC) with power scaling and a 110.8 kHz bandwidth. It offers precision ac and dc performance, with a 108 dB dynamic range, 110.8 kHz input bandwidth, and -120 dB THD. The AD7768 features optimized power dissipation versus noise versus input bandwidth, allowing users to select the appropriate power, speed, and input bandwidth for their application. It also includes programmable input bandwidth/sampling rates, cyclic redundancy check (CRC) error checking on the data interface, daisy-chaining capabilities, a linear phase digital filter, a low latency sinc5 filter, and a wideband brick wall filter with ±0.005 dB ripple to 102.4 kHz.

Features
8-channel simultaneous sampling
256 KSPS ADC output data rate per channel
108 dB dynamic range
110.8 kHz input bandwidth (-3 dB bandwidth (BW))
-120 dB THD typical
±2 ppm INL, ±50 μV offset error, ±30 ppm gain error
Optimized power dissipation vs. noise vs. input bandwidth
Selectable power, speed, and input bandwidth
Fast: highest speed; 110.8 kHz BW, 51.5 mW per channel
Median: half speed, 55.4 kHz BW, 27.5 mW per channel
Eco: lowest power, 13.8 kHz BW, 9.375 mW per channel
Input BW range: dc to 110.8 kHz
Programmable input bandwidth/sampling rates
Cyclic redundancy check (CRC) error checking on data interface
Daisy-chaining
Linear phase digital filter
Low latency sinc5 filter
Wideband brick wall filter: ±0.005 dB ripple to 102.4 kHz
Analog input precharge buffers
Power supply: AVDD1 = 5 V, AVDD2 = 2.25 V to 5 V, IOVDD = 2.5 V to 3.3 V or IOVDD = 1.8 V
64-lead LQFP package, no pad
Temperature range: -40°C to 105°C

Applications
Data acquisition systems: USB/PXI/Ethernet
Instrumentation and industrial control loops
Audio test and measurement
Vibration and asset condition monitoring
3-phase power quality analysis
Sonar
High precision medical EEG/EMG/ECG