Texas Instruments VSP2260Y

Overview

VSP2260Y from Texas Instruments is a 10-bit CCD signal processor IC for digital cameras, integrating correlated double sampling (CDS), programmable gain amplifier (–6dB to +42dB), analog-to-digital conversion at up to 20MHz, 79dB SNR, and optical black clamping - deployed in portable imaging systems requiring low-voltage (2.7V–3.6V) and low-power (83mW typ) operation.

For engineers reviewing the VSP2260Y datasheet, VSP2260Y pinout, VSP2260Y application, or VSP2260Y equivalent, this page delivers verified functional identity, LQFP-48 package mapping, confirmed CDS/PGA/ADC timing behavior, real-world digital camera signal chain integration points, and two validated alternative CCD processors with documented functional divergence.

Technical Context

The VSP2260Y implements a fully differential pipelined ADC architecture synchronized to ADCCK (up to 20MHz), with fixed 9-clock-cycle data latency in normal mode and 11-cycle latency in preblanking mode. Its CDS block uses switched-capacitor sampling driven by externally timed SHP/SHD pulses (default Active LOW), with reference and data level settling within 11ns at 50Ω driver impedance.

Gain control is digitally programmable via 10-bit code over –6dB to +42dB range (linear in dB), with ±0.5dB gain error and fast black-level recovery after gain change. The optical black clamp loop employs a 10-bit DAC driving COB pin, with time constant tunable via external 0.1µF capacitor (40.7µs typical) and slew rate of 1530V/s.

Key Specifications

Pinout & Package

LQFP-48 package with exposed thermal pad (θ_JA = 100°C/W); requires separate analog (VCC/GNDA) and digital (DRVDD/DRVGND) power domains and strict decoupling: 0.1µF ceramic on REFP/REFN/CM/BYP, 400pF–9000pF on BYPP2/BYPM, and 0.1µF–0.22µF on COB.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9826ASTZ, VSP2260Y offers tighter integration of OB clamping and lower power for portable digital cameras, whereas AD9826ASTZ provides higher resolution for lab-grade imaging but requires external black-level management. TDC1000YFFT serves a fundamentally different sensing modality and is not a viable alternative.

Availability

VSP2260Y is available at Aetrix Electronics and suitable for digital still cameras, security surveillance systems, industrial machine vision sensors, and medical endoscope imaging modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for VSP2260Y 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 company specializing in analog and embedded processing technologies, with leadership in precision data converters and imaging signal chains.

The VSP2260Y belongs to TI's CCD signal processor product line, designed specifically for cost-sensitive, low-power digital camera applications requiring integrated CDS, PGA, ADC, and optical black calibration in a single chip.

FAQ

What is the primary function of the VSP2260Y in a digital camera signal chain?

The VSP2260Y serves as the complete analog front-end and digitizer for CCD sensors, performing correlated double sampling (CDS) to suppress reset noise, programmable gain amplification (–6dB to +42dB), optical black level clamping for accurate pedestal establishment, and 10-bit analog-to-digital conversion at up to 20MHz. It replaces discrete op-amp, filter, and ADC solutions with a single integrated device optimized for portable digital camera designs.

Does the VSP2260Y support automatic optical black level calibration?

Yes, the VSP2260Y includes a dedicated optical black (OB) level clamp loop that auto-calibrates using CCD optical black pixels. The loop uses a 10-bit DAC output on COB pin, with time constant set by an external capacitor (e.g., 0.1µF yields 40.7µs). Clamp level is programmable from 0 to 60 LSB in 4-LSB steps via serial interface, and CLPOB pulse activation triggers the loop during black pixel intervals.

What are the power supply requirements and dissipation characteristics of the VSP2260Y?

The VSP2260Y operates from a single 2.7V to 3.6V supply, consuming 83mW typical at 3.0V and 20MHz conversion rate. It features a dedicated DRVDD pin for digital output drivers, isolating digital switching noise from analog sections. In Stand-By mode (enabled via serial interface), power drops to 6mW. Absolute maximum supply voltage is +4.0V, with strict ±0.1V tolerance between VCC rails.

How is gain controlled on the VSP2260Y, and what is its accuracy?

Gain on the VSP2260Y is controlled by a 10-bit digital code applied via its 2-byte serial interface (SLOAD/SCLK/SDATA), supporting a linear-in-dB range from –6dB to +42dB. Gain control error is specified at ±0.5dB across the full range. Default power-on gain is 0dB (code 0010000000), but the register state is undefined until initialized via serial interface or RESET pin assertion.

What package type and pin count does the VSP2260Y use, and what are key layout considerations?

The VSP2260Y is housed in an LQFP-48 package (Texas Instruments drawing PT) with thermal pad. Critical layout requirements include: separate analog (VCC/GNDA) and digital (DRVDD/DRVGND) ground planes joined only at the IC; 0.1µF ceramic decoupling on REFP/REFN/CM/BYP pins; 400pF–9000pF on BYPP2/BYPM; and 0.1µF–0.22µF on COB. Output traces should be short (<15pF load), with series resistors (100Ω–200Ω) recommended to limit current surges.