Product News

CS5521/22/23/24/28

2-, 4- or 8-Channel, 16/24-Bit, Buffered Delta-Sigma Multirange A/D Converters


Resolution (bits)Throughput (Sps)Integral Linearity (%FS)Differential Linearity (±LSB)Number of ChannelsPower Consumption (mW)Package
CS5521
16 1 ‑ 400 0.0015 % NMC 2 6 20 SSOP
CS5522
24 1 ‑ 606 7.0E-4 % NMC 2 9 20 PDIP
20 SSOP
CS5523
16 1 ‑ 400 0.0015 % NMC 4 6 24 SSOP
CS5524
24 1 ‑ 606 7.0E-4 % NMC 4 9 24 PDIP
24 SSOP
CS5528
24 1 ‑ 606 7.0E-4 % NMC 8 9 24 SSOP
Hide

Related Documents

Hide

Tools and Software


The CS5521/22/23/24/28 family of highly integrated, Delta-Sigma analog-to-digital (A/D) converters use charge-balance techniques to achieve 16-bit (CS5521/23) and 24-bit (CS5522/24/28) performance. The A/D converters are available as either 2-channel (CS5521/22), 4-channel (CS5523/24), or 8-channel (CS5528) devices. They each include a low input current and chopper-stabilized, instrumentation amplifier.

To permit selectable input spans of 25 mV, 55 mV, 100 mV, 1 V, 2.5 V and 5 V, the A/D converters include a PGA (programmable gain amplifier). To accommodate ground-based thermocouple applications, the devices include a charge pump drive, which provides a negative bias voltage to the on-chip amplifiers.

These devices also include a fourth-order Delta-Sigma modulator followed by a digital filter, which provides eight selectable-output word rates. The digital filters are designed to settle to full accuracy within one conversion cycle, and when operated at word rates below 30 Hz, they reject both 50 Hz and 60 Hz interference.

These single-supply products are ideal solutions for measuring isolated and non-isolated, low-level signals in process-control applications.


  • Low input current (100 pA) and chopper-stabilized instrumentation amplifier
  • Scalable input span (bipolar/unipolar)
    • 2.5 V VREF: 25 mV, 55 mV, 100 mV, 1 V, 2.5 V, 5 V
    • External: 10 V, 100 V
  • Wide VREF input range (1 V to 5 V)
  • Fourth-order Delta-Sigma A/D converters
  • Easy-to-use 3-wire serial interface port
    • Programmable/auto channel sequencer with conversion data FIFO (first in/first out)
    • Accessible calibration registers per channel
    • Compatible with SPI™ and Microwire™
  • System and self-calibration
  • Eight selectable word rates
    • Up to 617 Hz (XIN = 200 kHz)
    • Single-conversion settling
    • 50 Hz/60 Hz ±3 Hz simultaneous rejection
  • Single +5 V power supply operation
    • Charge pump drive for negative supply
    • +3 V to +5 V digital supply operation
  • Low-power consumption: 6.0 mW
  • Package: 20/24-pin SSOP, 20/24-pin PDIP; lead-free assembly

CS5521/22/23/24/28

2-, 4- or 8-Channel, 16/24-Bit, Buffered Delta-Sigma Multirange A/D Converters

Overview

Resolution (bits)Throughput (Sps)Integral Linearity (%FS)Differential Linearity (±LSB)Number of ChannelsPower Consumption (mW)Package
CS5521
16 1 ‑ 400 0.0015 % NMC 2 6 20 SSOP
CS5522
24 1 ‑ 606 7.0E-4 % NMC 2 9 20 PDIP
20 SSOP
CS5523
16 1 ‑ 400 0.0015 % NMC 4 6 24 SSOP
CS5524
24 1 ‑ 606 7.0E-4 % NMC 4 9 24 PDIP
24 SSOP
CS5528
24 1 ‑ 606 7.0E-4 % NMC 8 9 24 SSOP

Description

The CS5521/22/23/24/28 family of highly integrated, Delta-Sigma analog-to-digital (A/D) converters use charge-balance techniques to achieve 16-bit (CS5521/23) and 24-bit (CS5522/24/28) performance. The A/D converters are available as either 2-channel (CS5521/22), 4-channel (CS5523/24), or 8-channel (CS5528) devices. They each include a low input current and chopper-stabilized, instrumentation amplifier.

To permit selectable input spans of 25 mV, 55 mV, 100 mV, 1 V, 2.5 V and 5 V, the A/D converters include a PGA (programmable gain amplifier). To accommodate ground-based thermocouple applications, the devices include a charge pump drive, which provides a negative bias voltage to the on-chip amplifiers.

These devices also include a fourth-order Delta-Sigma modulator followed by a digital filter, which provides eight selectable-output word rates. The digital filters are designed to settle to full accuracy within one conversion cycle, and when operated at word rates below 30 Hz, they reject both 50 Hz and 60 Hz interference.

These single-supply products are ideal solutions for measuring isolated and non-isolated, low-level signals in process-control applications.

Features

Diagram

CS5521/22/23/24/28 Product Diagram

Related Documents

Design Resources



Tools and Software

 

Product News

  • Jan 25, 1999
    Cirrus Logic Unveils Industry's Most Highly-Integrated 16-bit ADCS Setting New Price/Performance Standard
    New Crystal ADCs Reduce Overall System Cost and Simplify Data Acquisition Design
  •