Analog Devices Inc. AD4134 Quad-Channel Analog-to-Digital Converters (ADCs) are low noise, simultaneous sampling, precision ADCs that offer high functionality, performance, and ease of use. The ADI AD4134 Quad-Channel ADCs are based on the continuous-time sigma-delta (CTSD) modulation scheme. The AD4134 removes the traditionally required switched capacitor circuitry sampling preceding the Σ-Δ modulator, which leads to a relaxation of the ADC input driving requirement. Additionally, the CTSD architecture also inherently rejects signals around the ADC aliasing frequency band, giving the device its inherent antialiasing capability and removing the need for a complicated external antialiasing filter.
Features
Alias free: inherent antialias rejection high-performance mode 102.5dB, typical
Excellent ac and dc performance
108dB dynamic range at ODR = 374kSPS, FIR filter, typical
137dB dynamic range at ODR = 10SPS, sinc3 filter, typical
THD: -120dB typical with 1kHz input tone
Offset error drift: 0.9µV/°C typical
Gain drift: 2ppm/°C typical
INL: ±2ppm of FSR typical
Dynamic range enhancement: 4:1 and 2:1 averaging mode
126dB, A-weighted dynamic range
Resistive ADC and reference input
Easy to sync: asynchronous sample rate converter
Multidevice synchronization with one signal line
Programmable data rates from 0.01kSPS to 1496kSPS with resolution of 0.01SPS
Option to control output data rate by an external signal
Linear phase digital filter options
Low ripple FIR filter: 32µdB pass-band ripple, dc to 161.942kHz
Low latency sinc3 filter and sinc6 filter, dc to 391.5 kHz
Sinc3 filter with 50Hz/60Hz rejection
130.7dBFS crosstalk
Daisy-chaining
CRC error checking on data and SPI
Two power modes - high-performance mode and low-power mode
4.5V to 5.5V and 1.65V to a 1.95V Power supply
1.8V IOVDD level
4.096V or 5V External reference
Crystal or external CMOS clock of 48MHz
SPI or pin (standalone) configurable operation
-40°C to +105°C Operating temperature range
Available in 8mm × 8mm, 56-lead LFCSP with exposed pad
Applications
Electrical test and measurement
Audio test
3-phase power quality analysis
Control and hardware in loop verification
Sonars
Condition monitoring for predictive maintenance
Acoustic and material science research and development
