Analog Devices Inc. AD9943KCPZ

Overview

AD9943KCPZ from Analog Devices is a complete 10-bit, 25 MSPS CCD signal processor integrating correlated double sampling (CDS), 6 dB to 40 dB digitally controlled VGA, optical black clamp, and 3-wire serial interface - all in a single 32-lead 5 mm × 5 mm LFCSP package. It conditions analog outputs from interlaced/progressive scan CCD arrays for digital still cameras, camcorders, and PC cameras operating on a 3 V single supply with 79 mW typical power dissipation.

For engineers reviewing the AD9943KCPZ datasheet, AD9943KCPZ pinout, AD9943KCPZ application, or AD9943KCPZ equivalent, key selection considerations include its guaranteed no-missing-codes 10-bit ADC, CDS timing precision (tID = 3.0 ns), optical black clamp resolution (256 steps), 0.3 LSB_rms total output noise at 6 dB gain, and compatibility with CCD reset transients up to 500 mV.

Technical Context

The AD9943KCPZ implements a single-channel CCD signal chain where SHP and SHD rising edges trigger correlated double sampling of reference and data levels respectively, with internal aperture delay of 3.0 ns. Its CDS rejects low-frequency noise while preserving video information before VGA amplification.

The 10-bit VGA provides monotonic 1024-step gain control (5.3 dB to 41.5 dB) via serial interface, and the optical black clamp uses CLPOB-synchronized feedback to correct residual offsets using an 8-bit DAC and programmable 256-step clamp level register (0–63.75 LSB). The 10-bit pipelined ADC operates with 2.0 V full-scale input and straight binary coding.

Key Specifications

Pinout & Package

AD9943KCPZ is housed in a 32-lead, 5 mm × 5 mm LFCSP package with exposed thermal pad soldered to PCB ground plane (θ_JA = 27.7°C/W). Pin functions are validated per Analog Devices Rev. C datasheet Figure 2 and Table 6.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9944KCPZ, AD9943KCPZ trades 2 bits of resolution for lower data throughput and reduced FPGA/ASIC interface complexity; compared with TDA9943HN/C1, it delivers integrated CDS timing control, optical black clamping, and 5 MSPS higher sampling rate - directly reducing system-level component count and timing validation effort.

Availability

AD9943KCPZ is available at Aetrix Electronics and suitable for digital still cameras, portable CCD imaging devices, and CCTV cameras requiring stable component supply, long-term lifecycle support, and guaranteed no-missing-codes performance across industrial temperature ranges.

Supply support for AD9943KCPZ 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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, industrial, and imaging applications.

The AD9943KCPZ belongs to Analog Devices' CCD signal processor product line, designed specifically to replace multi-chip analog front-ends in portable and embedded imaging systems with a single, fully integrated, 3 V–compatible solution.

FAQ

What is the maximum allowable CCD reset transient for AD9943KCPZ?

The AD9943KCPZ supports CCD reset transients up to 500 mV, as specified in Table 2 of the Rev. C datasheet. This tolerance allows direct interfacing with common interlaced and progressive CCD sensors without external clipping or attenuation circuits, preserving signal integrity during pixel reset phases.

Does AD9943KCPZ require separate analog and digital supplies?

No - AD9943KCPZ operates from a single 2.7 V to 3.6 V supply for AVDD, DVDD, and DRVDD. While the datasheet permits a separate DRVDD rail for noise isolation, the device is fully functional with one shared 3 V source, simplifying power design in space-constrained camera modules.

How does the optical black clamp function in AD9943KCPZ?

The AD9943KCPZ optical black clamp uses CLPOB-synchronized feedback to compare ADC output against a user-programmed 256-step clamp level (0–63.75 LSB) during shielded pixel intervals. The resulting error drives an 8-bit DAC that adjusts the ADC input offset, enabling automatic black-level tracking without external circuitry.

What is the pipeline latency of AD9943KCPZ digital output?

AD9943KCPZ exhibits a fixed 9-cycle pipeline delay from SHD sampling edge to valid D0–D9 output data, as confirmed in Table 4 timing specifications. This deterministic latency simplifies synchronization with downstream image processors and enables precise timing budget allocation in real-time video systems.

Can AD9943KCPZ be used with progressive-scan CCDs?

Yes - AD9943KCPZ supports both interlaced and progressive-scan CCD arrays, as stated in the General Description. Its CDS architecture, configurable SHP/SHD polarity, and 25 MSPS sampling rate are explicitly validated for progressive-scan timing, including line-based optical black clamping via CLPOB.