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24-bit Sigma Delta Charge-Redistribution DAC (High bandwidth)

The 24-bit Sigma Delta Charge-Redistribution DAC is designed to have high absolute accuracy, low noise and low power consumption, and it is robust against temperature variations. This 24-bit Sigma Delta Charge-Redistribution DAC is ideally suited for high-performance audio as well as demanding control applications in a wide variety of environments.

The 24-bit Sigma Delta Charge-Redistribution DAC is based on the SDCRDAC24b, but this version is not radiation hardened. Instead, the 24-bit Sigma Delta Charge-Redistribution DAC has increased bandwidth, increased temperature stability and lower power consumption.

This product is silicon-verified.

Features

Noise floor: <-139dBV (10uHz - 1Hz)
Noise floor: -138dBV (1Hz - 50Hz)
Noise floor: -112dBV (20Hz - 20kHz)
Input sample rate: 0-3MS/s
Total out-of-band noise: < -60dB, without filtering
Low latency (down to 9 cock cycles): Ideal for closed loop applications
Wide common mode range
Quasi-differential outputs
Outputs suitable for both current-mode and voltage-mode operation
Total power consumption: 950 uW (fclk=4MHz; power scales linearly with fclk)
Gain stability vs temperature: <2ppm/K
Low offset: <3uV
No code dependent loading of Vref
Technology: UMC 0.18 um CMOS
Silicon-verified
Design is scalable with regard to area and performance

Applications

High-precision control systems
Automatic test equipment
Gain and offset adjustment/calibration
Programmable voltage and current sources
Process and servo control
High-quality audio
Active noise reduction systems

Block Diagram of the 24-bit Sigma Delta Charge-Redistribution DAC (High bandwidth)

24-bit Sigma Delta Charge-Redistribution DAC (High bandwidth) Block Diagam

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