Analog Devices Inc. AD9895KBCZ

Overview

AD9895KBCZ from Analog Devices is a 12-bit, 30 MHz CCD signal processor with integrated Precision Timing™ generator, Correlated Double Sampler (CDS), 4 dB/6 dB PxGA®, 2–36 dB VGA, and on-chip 5 V horizontal/RG drivers. It serves as the complete analog front end and timing controller for high-resolution digital imaging systems, delivering 12-bit digitization at up to 30 MSPS with 700 ps timing resolution.

For engineers reviewing the AD9895KBCZ datasheet, AD9895KBCZ pinout, AD9895KBCZ application, or AD9895KBCZ equivalent, this page provides verified functional specifications, validated pin functions per official ADI documentation, confirmed 64-lead CSPBGA package mapping, and two field-tested alternative options for CCD timing and signal chain design.

Technical Context

The AD9895KBCZ implements a fully programmable Precision Timing core synchronized to a 30 MHz CLI input, achieving 700 ps edge resolution for RG, H1–H4, SHP, and SHD clocks. Its analog front end integrates CDS, dual-stage gain (PxGA + VGA), optical black clamp, and a 12-bit ADC - all calibrated for <0.2% peak nonlinearity and 0.8 LSB_rms output noise at 6 dB gain.

Timing generation supports 2-phase and 4-phase H-clock modes, 4-phase vertical transfer clocks (V1–V4), eight sensor gate pulses (VSG1–VSG8), substrate clock (SUBCK), and mechanical shutter (MSHUT) control - all configurable via a 3-wire serial interface operating up to 10 MHz.

Key Specifications

Pinout & Package

AD9895KBCZ is housed in a 64-lead Chip Scale Plastic Ball Grid Array (CSPBGA), designated BC-64 by Analog Devices, with 0.5 mm ball pitch and dimensions of 9.0 mm × 9.0 mm. The package supports thermal resistance of θ_JA = 61°C/W and θ_JC = 29.7°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9891KBCZ, AD9895KBCZ provides higher resolution and speed at the cost of increased power (600 mW vs. 380 mW at full load); TDC1000YFFT offers no timing or CCD-specific functionality and cannot replace AD9895KBCZ in imaging applications.

Availability

AD9895KBCZ is available at Aetrix Electronics and suitable for digital still cameras, industrial machine vision systems, and scientific CCD instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for AD9895KBCZ 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 measurement and control.

The AD9895KBCZ belongs to Analog Devices' Precision Timing™ CCD signal processor family, designed specifically to integrate timing generation and analog signal conditioning for high-end digital imaging systems requiring sub-nanosecond clock alignment and calibrated 12-bit digitization.

FAQ

What is the maximum supported pixel clock frequency for AD9895KBCZ?

The AD9895KBCZ supports a maximum CLI (clock input) frequency of 30 MHz, enabling real-time digitization of CCD sensors operating at up to 30 million pixels per second. This is confirmed in the "MAXIMUM CLOCK RATE" specification table on page 3 of the AD9891/AD9895 datasheet Rev. A, where AD9895 is explicitly rated at 30 MHz. Exceeding this frequency risks timing violation and data corruption in the AD9895KBCZ signal chain.

Does AD9895KBCZ include on-chip drivers for vertical CCD clocks (V1–V4)?

No, AD9895KBCZ does not include on-chip drivers for vertical transfer clocks V1–V4. As stated in the "SYSTEM OVERVIEW" section (page 11), an external V-driver is required for vertical transfer clocks, sensor gate pulses, and the substrate clock. The AD9895KBCZ provides only CMOS-level V1–V4 outputs; these must be buffered externally to meet CCD voltage and current requirements.

What is the purpose of the CLO pin on AD9895KBCZ?

The CLO (Clock Output) pin on AD9895KBCZ is the inverse of the CLI input and is intended to drive an external crystal placed between CLI and CLO, forming a self-contained crystal oscillator circuit. This configuration eliminates the need for an external clock source, as described in Figure 51 and the "PRECISION TIMING" section (page 12) of the AD9891/AD9895 datasheet Rev. A.

Can AD9895KBCZ operate in slave mode with external HD/VD signals?

Yes, AD9895KBCZ supports slave mode operation where external HD (horizontal sync) and VD (vertical sync) signals are applied to pins B1 and A1 respectively. In this mode, all internal timing-including RG, H1–H4, V1–V4, and sampling clocks-is synchronized to the incoming HD/VD, as documented in the "SYSTEM OVERVIEW" (page 11) and "SYNC During Master Mode Operation" (page 35) sections of the datasheet Rev. A.

What is the function of the MSHUT and STROBE outputs on AD9895KBCZ?

The MSHUT (pin A3) and STROBE (pin B3) outputs on AD9895KBCZ are programmable pulse generators used to trigger mechanical shutter actuators and flash/strobe circuits. Their timing, width, and polarity are fully configurable via internal registers, enabling precise exposure control synchronized to CCD readout - as specified in the "SHUTTER TIMING CONTROL" section (page 26) of the AD9891/AD9895 datasheet Rev. A.