VSP2260Y

Overview

The VSP2260Y is a mixed-signal CCD signal processor IC designed for digital camera applications. It integrates Correlated Double Sampling (CDS), a Programmable Gain Amplifier (PGA) with a -6dB to +42dB range, and a 10-bit Analog-to-Digital Converter (ADC). The device operates on a single 2.7V to 3.6V supply, consuming 83mW in normal mode and 6mW in standby. It features a 20MHz conversion rate, 79dB signal-to-noise ratio, and Optical Black level clamping. The component is housed in an LQFP-48 package.

Feature Summary

• Integrates Correlated Double Sampling (CDS) and input clamp circuits for noise reduction and DC restoration
• Features a digitally controlled Programmable Gain Amplifier (PGA) with linear dB gain ranging from -6dB to +42dB
• Includes a high-performance 10-bit ADC with no missing codes and up to 20MHz conversion speed
• Provides an auto-calibration loop for Optical Black (OB) level clamping using external capacitors

Applications

• Digital still cameras
• Video cameras
• Security cameras

Procurement Notes

Verify the specific ordering suffix when sourcing components. The base part number VSP2260Y denotes standard tape and reel packaging quantities, while the /2K suffix indicates a specific 2000-piece reel configuration. Confirm that the active status matches current production requirements, as older revisions may have different availability or handling specifications compared to the latest datasheet versions.

Selection Notes

Select this component for systems requiring integrated CCD signal conditioning and digitization. Ensure the design accommodates the dedicated DRVDD supply pin for digital outputs and provides sufficient decoupling for analog reference pins. Verify that the serial interface timing constraints for SLOAD, SCLK, and SDATA align with the host controller's capabilities to properly configure gain and polarity settings.

Part Context

The VSP2260 belongs to Texas Instruments' family of CCD signal processors. It consolidates multiple discrete functions into a single monolithic IC, reducing board space and complexity for imaging systems. The device replaces separate CDS, PGA, and ADC chips, offering a streamlined solution for consumer video and photography electronics requiring low-voltage operation.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

FAQ

How is the Optical Black (OB) clamp level adjusted?

The OB clamp level is programmable via the serial interface using a 10-bit control DAC. An external capacitor connected to the COB pin determines the loop time constant and slew rate.

What is the data latency of the VSP2260?

In normal operation mode, the data latency is fixed at 9 clock cycles. In preblanking mode, the latency increases to 11 clock cycles.

Can the polarity of sampling pulses be changed?

Yes, the active polarity of SHP, SHD, CLPOB, and CLPDM can be selected as Active HIGH or Active LOW through the serial interface registers.