Analog Devices Inc. AD9949KCPRL

Overview

AD9949KCPRL 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 resolution. It delivers complete CCD clock generation (RG, H1–H4), operates up to 36 MHz pixel rate, and targets digital still camera imaging systems requiring high-fidelity analog signal conditioning and sub-nanosecond timing control.

For engineers reviewing the AD9949KCPRL datasheet, AD9949KCPRL pinout, AD9949KCPRL application, or AD9949KCPRL equivalent, key selection considerations include its 40-lead LFCSP package, 12-bit/36 MSPS ADC performance, integrated 3 V horizontal/RGB drivers, CDS + dual-stage gain (0–18 dB PxGA, 6–42 dB VGA), and programmable CLPOB/PBLK/HBLK timing sequences for precise optical black clamping and blanking control.

Technical Context

The AD9949KCPRL implements a fully synchronized signal chain: CLI input clocks the internal Precision Timing core, which generates RG, H1–H4, SHP, and SHD with programmable edge positions in 48-step increments (tCLI/48 resolution). All timing outputs are derived from the same master clock domain and aligned to VD/HD sync signals.

Analog processing includes correlated double sampling with adjustable CDS gain (0/−2/−4 dB), 256-step PxGA (0–18 dB), 1024-step VGA (6–42 dB), 256-step black level clamp, and a 12-bit ADC with guaranteed no missing codes, ±0.5 LSB DNL typ, and 8 LSB INL max - all specified across −20°C to +85°C.

Key Specifications

Pinout & Package

AD9949KCPRL is housed in a 40-lead, 6 mm × 6 mm, 0.8 mm profile LFCSP package with exposed paddle for thermal management (θJA = 27°C/W on 4-layer PCB).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9945ASTZ, AD9949KCPRL adds 2 bits of resolution, 11 MSPS higher sample rate, and an integrated <600 ps timing core - enabling single-chip CCD clock generation and eliminating external timing components. Unlike TDC1000IPWPR, it provides dedicated CCD interfaces, optical black control, and horizontal blanking logic essential for imaging pipelines.

Availability

AD9949KCPRL is available at Aetrix Electronics and suitable for digital still cameras, industrial machine vision systems, and medical endoscopy imaging requiring stable component supply, long-term manufacturability, and guaranteed lifecycle support.

Supply support for AD9949KCPRL 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The AD9949KCPRL belongs to Analog Devices' Precision Signal Processing product line, designed specifically for high-fidelity CCD and CMOS image sensor signal chains requiring sub-ns timing control, low-noise analog conditioning, and integrated clock generation.

FAQ

What is the maximum pixel clock frequency supported by the AD9949KCPRL?

The AD9949KCPRL supports a maximum CLI (main clock input) frequency of 36 MHz, enabling full-resolution digitization of CCDs operating at up to 36 million pixels per second. This is confirmed in the General Specifications table (Table 1) of the Rev. C datasheet, where "MAXIMUM CLOCK RATE" is specified as 36 MHz min/typ/max. The Precision Timing core derives all internal clocks-including RG, H1–H4, and SHP/SHD-from this CLI input with tCLI/48 resolution.

Does the AD9949KCPRL include on-chip drivers for CCD horizontal and reset gate clocks?

Yes, the AD9949KCPRL integrates on-chip 3 V drivers for RG and H1–H4 clocks, each programmable up to 30 mA output current. Pin descriptions (Table 6) confirm H1–H4 and RG as "DO" (digital outputs) with dedicated supplies HVDD and RGVDD. The datasheet states "On-chip 3 V horizontal and RG drivers" in FEATURES and specifies "Maximum Output Current (Programmable)" as 30 mA in Table 2 (Digital Specifications).

How does the Precision Timing™ core achieve <600 ps resolution in the AD9949KCPRL?

The AD9949KCPRL's Precision Timing™ core divides the CLI input period into 48 discrete edge positions. At the maximum 36 MHz CLI frequency (tCLI = 27.8 ns), resolution equals tCLI/48 ≈ 577 ps - satisfying the "<600 ps" specification. This is explicitly detailed in the "Timing Resolution" section (page 17), Figure 17, and Table 4 (tCLI = 27.8 ns typ).

Can the AD9949KCPRL perform optical black clamping and pixel blanking simultaneously?

Yes, the AD9949KCPRL supports concurrent optical black clamping (CLPOB) and pixel blanking (PBLK) via its dual-purpose CLP/PBLK pin (Pin 39), configured through the CLPBLKOUT register (Address 18). Independent 24-bit toggle registers (CLPOBTOG_0–3 and PBLKTOG_0–3) allow fully programmable, non-overlapping or overlapping pulse sequences for each function - as described in Tables 10 and 11.

What serial interface protocol does the AD9949KCPRL use for register programming?

The AD9949KCPRL uses a 3-wire serial interface (SL, SCK, SDI) operating up to 10 MHz, with register writes requiring 32-bit transactions (8-bit address + 24-bit data). It supports auto-increment mode for efficient sequential register loading. This is defined in the "Serial Interface Timing" section (page 12), Figure 15/16, and Table 2 (fSCLK max = 10 MHz).