High performance Six-Channel AFE with Sensor Timing Generation and LVDS/CMOS Data Output
The CS82L46 is a six-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 CS82L46 operates at pixel conversion rates up to 24 MSPS, making it well suited for high-speed document scanners, flatbed scanners, and barcode scanning systems.
The CS82L46 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 six channel imaging AFEs, the CS82L46 offers lower power operation (64.2 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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Technologies
Features
- Six-channel analog front end (AFE)
- Correlated double sampling
- RGB LED current drive and timing control
- Multiplexed data output format
- Internally generated reference voltages
- 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
- 48-pin QFN package
Parametric Specifications
| Resolution (bits) | 16 |
| Speed (MSPS) | 144 |
| Input PGA (bits) | 12 |
| Programmable Clamp Voltage (bits) | 5 |
| LED Drive Resolution (bits) | 8 |
| Output Format |
LVDS 16/10-bit 5 pairs; LVDS 12-bit 4 pairs; LVDS 16/10-bit 3 pairs; LVDS 10-bit 2 pairs; CMOS (external timing) 16/10/8-bit; CMOS (internal TG timing) 12/10-bit |
| Supply (V) | 3.3 |
| Power Consumption (mW) | 365 |
| Package | QFN-EP 48pin |
Technical Documents
CS82L46 Schematic and Layout
Apr 16, 2026 : 1.6 MBCDB82L4X-MB Schematic and Layout
Apr 16, 2026 : 8.2 MBCS82L46 Product Data Sheet
Jan 1, 2026, DS1351F1 : 4.8 MBCDB82L4X-MB User Guide
May 1, 2025 : 2.1 MBCDB82L46-DC User Guide
May 1, 2024 : 848.3 KBDesign Resources
CS82L44/CS82L46 Input Impedance Calculation
Feb 1, 2025 : 173.6 KBCS82L46 Equivalent IO Circuits
Jul 1, 2024 : 290.3 KBPress Releases
2026
Apr 16
Cirrus Logic Introduces New Industrial Imaging Products for High-Precision Scan Applications
High performance, integrated analog front‑end ICs built for faster, more accurate commercial and industrial imaging
Selection Guidelines
The CS82L46 should be selected when:
- Designing a high-speed scanner with up to 24 MSPS per channel.
- Selecting a multi-channel analog front end for a scanner with a CCD or CIS sensor.
- Reducing power consumption in a scanner analog front end.
- When multiple simultaneous sensor channels (>6) are required.
- Minimizing BOM with an integrated scanner AFE that includes LED drivers and on chip power management.
- Design resources are limited and the sensor output requires scanner-specific analog conditioning.
The CS82L46 should not be selected when:
- Designing a system that requires less than 6 channels. In this case the CS82L41 or CS82L44 should be considered.
- Designing for the lowest power consumption per channel in a scanner analog front end. In this case the CS82L41 should be considered.
- Greater than 24 MSPS throughput per channel is required.
The primary application for the CS82L46 is in scanning systems. Relevant applications include:
- Document scanners (flatbed and sheet-fed scanners)
- Office and home scanners using CIS image sensors
- Industrial scanning systems and high-precision measurement scanners
- Barcode and 2D code scanning systems
- Machine vision systems requiring line-scan image acquisition
- USB-powered scanner designs
- Laser distance measurement systems