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Imaging Converters

CS82L44

High Performance Four-Channel AFE with Sensor Timing Generation and LVDS/CMOS Data Output
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CS82L44 Overview

The CS82L44 is a four-channel imaging analog front end (AFE) for scanner applications, combining an image sensor ADC, analog conditioning, and LED driver in one device. Designed for CCD and CIS image sensors, the CS82L44 operates at pixel conversion rates up to 24 MSPS per channel, making it well suited for high-speed document scanners, flatbed scanners, and barcode scanning systems.

The CS82L44 receives analog pixel data from the CCD or CIS image sensor, performs scanner-specific analog conditioning, including reset level clamping (RLC), correlated double sampling (CDS), gain and offset adjustment, then converts the signal to digital pixel data for output to a scanner controller ASIC over CMOS or LVDS output pins.

Compared to alternative four channel imaging AFEs, the CS82L44 offers lower power operation (66 mW/channel) and higher levels of integration, including RGB and white LED drivers and on-chip LDO regulator for CIS support. This integration reduces BOM and simplifies scanner front end design.

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Product Features

  • Four-channel analog front end (AFE)

  • Correlated double sampling

  • RGB LED current drive and timing control

  • Multiplexed data output format

  • Internally generated reference voltages

  • 3.3 V power regulation for CIS sensor

  • Timing control for sensor

  • Versatile clocking configuration

    • Tolerant of spread-spectrum clock reference

    • Programmable DLL and PLL

    • Spread-spectrum modulation of data output

  • SPI or I2C control interface

  • 40-pin QFN package

Parametric Specifications

Output FormatLVDS 16/10-bit 3 pairs; LVDS 10-bit 2 pairs; CMOS (external timing) 16/8-bit; CMOS (internal TG timing) 12-bit
Control InterfaceSPI or I²C
Speed (MSPS)96
Resolution (bits)16
Input PGA (bits)12
Offset (bits)9
Power Supply (V)3.3
Power Consumption (mW)264
LED Drive Resolution (bits)8
Programmable Clamp Voltage (bits)5
Package40 QFN-EP

Design Resources

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Evaluation Boards

  • CS82L44 Analog Front-End Evaluation Board (CDB82L44-DC)

    CS82L44 Analog Front-End Evaluation Board (CDB82L44-DC)

    The CDB82L44-DC evaluates the Cirrus Logic CS82L44 four-channel analog front-end device. It mounts to the CDB82L4X-MB motherboard and offers test points, LVDS or CMOS output configuration, and SoundClear Studio support.

    Order SampleUser Guide
  • CS82L41, CS82L44 and CS82L46 Analog Front-End Evaluation System (CDB82L4X-MB)

    CS82L41, CS82L44 and CS82L46 Analog Front-End Evaluation System (CDB82L4X-MB)

    The CDB82L4X-MB motherboard, paired with a channel-specific daughter card, configures and evaluates the Cirrus Logic CS82L41, CS82L44 and CS82L46 analog front-end devices.

    Order SampleUser Guide

Software Packages

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