Analog Devices Inc. AD9949KCP

Overview

AD9949KCP from Analog Devices is a 12-bit CCD signal processor integrating analog front-end (CDS, PxGA, VGA, black level clamp, 36 MSPS ADC) and a programmable Precision Timing™ core with <600 ps clock resolution. It delivers complete CCD timing generation (RG, H1–H4), supports up to 36 MHz pixel rates, and operates over −20°C to +85°C in digital still camera systems.

For engineers reviewing the AD9949KCP datasheet, AD9949KCP pinout, AD9949KCP application, or AD9949KCP equivalent, key selection criteria include its integrated CDS/VGA/ADC signal chain, sub-ns timing programmability, 40-lead LFCSP package, and support for high-speed CCD readout with configurable horizontal blanking and clamping sequences.

Technical Context

The AD9949KCP implements a fully synchronized dual-path architecture: one path processes CCD analog signals through correlated double sampling, pixel-level gain (0–18 dB), variable gain amplification (6–42 dB), and 12-bit digitization at 36 MSPS; the other path generates high-speed CCD clocks (RG, H1–H4) and sample clocks (SHP/SHD) using a CLI-synchronized Precision Timing core with 48-step edge positioning per pixel period.

Timing control is achieved via a 3-wire serial interface programming 24-bit registers, enabling independent polarity, rising/falling edge placement (0–47 positions), drive current (0–30 mA), and phase alignment of all outputs - all referenced to a single 36 MHz CLI input with 6 ns internal delay and 11-cycle pipeline latency for data outputs.

Key Specifications

Pinout & Package

AD9949KCP is housed in a 40-lead Lead Frame Chip Scale Package (LFCSP) with an exposed thermal paddle, optimized for low-inductance grounding and thermal dissipation in high-speed imaging layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9948KCP, AD9949KCP adds <600 ps timing resolution and programmable CCD clock drivers - essential for high-fidelity scientific and industrial imaging. Unlike TDC1000YFFT, AD9949KCP integrates CCD-specific functions (CDS, RG/H timing, CLPOB) absent in general-purpose AFEs.

Availability

AD9949KCP is available at Aetrix Electronics and suitable for digital still cameras, high-speed industrial imaging, medical endoscopy, and scientific CCD instrumentation requiring stable component supply and long-term design continuity.

Supply support for AD9949KCP 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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial, communications, and imaging markets.

The AD9949KCP belongs to Analog Devices' CCD signal processor product line, engineered specifically for high-fidelity, high-speed CCD readout in professional imaging systems where timing precision, analog integrity, and integration density are critical.

FAQ

What is the maximum pixel clock rate supported by the AD9949KCP?

The AD9949KCP supports a maximum CLI input clock rate of 36 MHz, enabling full-speed operation with CCDs delivering up to 36 million pixels per second. This rate is specified across the full operating temperature range (−20°C to +85°C) and directly determines the timing resolution of the Precision Timing™ core, which achieves <600 ps edge placement accuracy at this frequency. The AD9949KCP's 12-bit ADC and analog front-end are fully characterized at 36 MSPS.

Does the AD9949KCP include on-chip CCD clock drivers?

Yes, the AD9949KCP integrates dedicated on-chip drivers for RG (reset gate) and H1–H4 (horizontal clocks), each capable of 30 mA output current and programmable edge position, polarity, and drive strength. These drivers operate from separate HVDD and RGVDD supplies (2.7 V to 3.6 V) and eliminate the need for external level shifters or discrete driver ICs in CCD timing circuits.

How does the Precision Timing™ core in the AD9949KCP achieve sub-nanosecond resolution?

The AD9949KCP's Precision Timing™ core divides the CLI input period into 48 discrete edge positions, yielding a timing resolution of tCLI/48. At 36 MHz (tCLI = 27.8 ns), this equals approximately 579 ps. Edge placement for RG, H1–H4, SHP, and SHD is controlled via 6-bit register fields mapped to these 48 positions, enabling deterministic sub-ns alignment without external PLLs or delay lines.

Can the AD9949KCP perform correlated double sampling (CDS) and black level clamping simultaneously?

Yes, the AD9949KCP performs CDS and optical black (OB) clamping in sequence within a single pixel period: CDS removes reset noise from the CCD signal, then the OB clamp corrects residual DC offset using programmable 256-step level control. Both functions are active by default and can be independently enabled/disabled via the OPRMODE register (bits CLPENABLE and CDSGAIN), ensuring optimal noise suppression for varying sensor characteristics.

What package type and thermal performance does the AD9949KCP use?

The AD9949KCP is packaged in a 40-lead LFCSP (6 mm × 6 mm, 0.5 mm pitch) with an exposed thermal paddle soldered to the PCB ground plane. Its thermal resistance is θJA = 27°C/W under standard 4-layer board conditions, supporting reliable operation at 320 mW total power dissipation (36 MHz, HVDD = 3 V). This package enables compact, thermally robust layouts essential for high-density imaging modules.