Texas Instruments VSP2260Y/2K

Overview

VSP2260Y/2K from Texas Instruments is a 10-bit CCD signal processor IC for digital cameras, integrating correlated double sampling (CDS), programmable gain amplifier (–6 dB to +42 dB), analog-to-digital conversion at up to 20 MHz, 79 dB SNR, and optical black level clamping - deployed in LQFP-48 for single-supply 2.7V–3.6V operation in portable imaging systems.

For engineers reviewing the VSP2260Y/2K datasheet, VSP2260Y/2K pinout, VSP2260Y/2K application, or VSP2260Y/2K equivalent, this page delivers verified functional identity, validated LQFP-48 pin mapping, confirmed 10-bit/20MHz ADC performance, real-world timing constraints (9-cycle latency, SHP/SHD synchronization), and two technically documented alternative CCD processors for digital camera front-end design.

Technical Context

The VSP2260Y/2K implements a fully differential pipelined ADC architecture with integrated CDS, PGA, and OB clamp loop - all synchronized to external CCD timing signals (SHP, SHD, CLPOB) and clocked by ADCCK. Its serial interface configures gain, clamp level, and pulse polarities via 2-byte writes to dedicated registers.

It operates in Normal Mode (83 mW @ 3.0 V) or Stand-By Mode (6 mW), with fixed 9-clock-cycle data latency, 10-bit straight-binary CMOS output, TTL-compatible digital inputs, and internal reference generation (REFP = 1.75 V, REFN = 1.25 V, CM = 1.5 V) requiring strict 0.1 µF decoupling on each analog reference pin.

Key Specifications

Pinout & Package

LQFP-48 package (Texas Instruments drawing PT, 48-pin, 7 mm × 7 mm, 0.5 mm pitch) with separate analog/digital power domains: VCC/GNDA for analog circuitry, DRVDD/DRVGND for digital outputs, and dedicated bypass pins (BYPP2, BYP, BYPM, COB, REFP, REFN, CM).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar CCD signal processing applications.

Compared with TVP5146M1 and AD9826, the VSP2260Y/2K uniquely integrates CDS, programmable OB clamping, and 20 MSPS 10-bit digitization in a single LQFP-48 package - making it the only drop-in solution for cost-sensitive, portable digital cameras requiring full CCD signal chain integration.

Availability

VSP2260Y/2K is available at Aetrix Electronics and suitable for digital still cameras, security camera modules, industrial machine vision sensors, and medical endoscope imaging systems requiring stable component supply, long-lifecycle availability, and tape-and-reel packaging for automated assembly.

Supply support for VSP2260Y/2K includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and high-performance signal chain solutions - with decades of expertise in imaging ICs and precision data converters.

The VSP2260Y/2K belongs to TI's CCD signal processor product line, designed specifically to replace discrete CDS+PGA+ADC implementations in portable digital cameras - emphasizing low power, small footprint, and seamless integration with interline-transfer CCD sensors.

FAQ

What is the function of the COB pin on the VSP2260Y/2K?

The COB pin on the VSP2260Y/2K is the analog output of the optical black (OB) clamp loop's control DAC. It sources/sinks current (±0.15 µA to ±153 µA) into an external capacitor (typically 0.1 µF) to establish the OB pedestal voltage. This closed-loop system dynamically adjusts the black level reference during OB pixel intervals, ensuring accurate DC restoration independent of temperature or gain changes - a core function for stable image quality in the VSP2260Y/2K.

Does the VSP2260Y/2K support both active-high and active-low timing control signals?

Yes, the VSP2260Y/2K supports configurable polarity for SHP, SHD, CLPOB, CLPDM, and PBLK via its serial interface register P[2:0]. By default, all are active-low, but writing to the clock polarity register allows switching any to active-high - eliminating the need for external inverters and enabling direct compatibility with diverse CCD timing generators. This flexibility is explicitly documented in the VSP2260Y/2K register definitions and timing diagrams.

What is the data latency of the VSP2260Y/2K and how does preblanking affect it?

The VSP2260Y/2K has a fixed 9-clock-cycle data latency from the trailing edge of SHD to valid B[9:0] output in Normal Mode. When PBLK is asserted low (preblanking mode), latency increases to 11 clock cycles and all digital outputs force to zero - a hardware-level blanking function used for vertical interval suppression or sensor reset synchronization. This behavior is hardwired and confirmed in the VSP2260Y/2K timing specifications and theory-of-operation section.

How is the VSP2260Y/2K powered, and why are separate analog and digital supplies required?

The VSP2260Y/2K uses dual-domain power: VCC/GNDA for analog circuitry (CDS, PGA, ADC, references) and DRVDD/DRVGND exclusively for the B[9:0] digital output drivers. This separation prevents digital switching noise from degrading analog performance - a requirement emphasized in TI's grounding recommendations. All analog supplies must share the same clean 2.7–3.6 V rail, while DRVDD may be isolated with a ferrite bead to further suppress coupling, as specified in the VSP2260Y/2K application guidance.

What decoupling capacitors are mandatory for stable operation of the VSP2260Y/2K?

Mandatory decoupling per the VSP2260Y/2K datasheet includes: 0.1 µF ceramic capacitors on REFP, REFN, CM, BYPP2, BYP, BYPM, and COB; plus parallel 1–22 µF tantalum + 0.1 µF ceramic on each VCC and DRVDD supply. These values are not optional - insufficient decoupling causes reference instability, increased DNL/INL, and degraded 79 dB SNR. The COB capacitor (0.1 µF) directly sets the OB clamp loop time constant (40.7 µs), making it critical for black-level accuracy in the VSP2260Y/2K.