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

Overview

The SDCRDAC24bHBW is a 24-bit sigma-delta charge-redistribution digital-to-analog converter (DAC). It is designed to have high absolute accuracy, low noise and low power consumption, and it is robust against temperature variations. This makes the DAC ideally suited for high-performance audio as well as demanding control applications in a wide variety of environments.

The product is based on the SDCRDAC24b, but this version is not radiation hardened. Instead, the SDCRDAC24bHBW has increased bandwidth, increased temperature stability and lower power consumption.

This product is silicon-verified.

Key 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

Block Diagram

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

Technical Specifications

Foundry, Node

UMC 0.18 um CMOS

Maturity

silicon-verified

Availability

Now

UMC

Silicon Proven: 180nm

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