Analog Devices Inc. AD9945KCPZ
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 32-WFQFN Exposed Pad, CSP |
| Mfr | Analog Devices Inc. |
| Mounting Type | Surface Mount |
| Operating Temperature | -20°C ~ 85°C |
| Input Type | Logic |
| Type | CCD Signal Processor, 12-Bit |
| Output Type | Logic |
| Supplier Device Package | 32-LFCSP-WQ (5x5) |
| Package | Tray |
| Product Status | Active |
| Base Product Number | AD9945 |
| REACH Status | REACH Unaffected |
| Standard Package | 1 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
AD9945KCPZ High-Performance CCD Signal Processor
The AD9945KCPZ is a highly integrated CCD (Charge-Coupled Device) signal processor designed for high-speed, high-resolution imaging applications. It features a 12-bit analog-to-digital converter (ADC) with a maximum sampling rate of 65 MSPS, enabling precise digitization of analog signals from CCD sensors in industrial cameras, medical imaging systems, and scientific instruments. The chip integrates a complete analog front end (AFE), including a correlated double sampler (CDS) for noise reduction, a programmable gain amplifier (PGA) with 0 dB to 36 dB gain range, and a black-level clamping circuit for accurate DC restoration. Its 12-bit digital output supports parallel CMOS or LVDS interfaces, ensuring compatibility with modern FPGA and DSP platforms.
The AD9945KCPZ operates from a single 3.3 V supply, with separate analog and digital power domains to minimize crosstalk. Its power-down mode reduces consumption to <1 mW, ideal for battery-powered portable devices. The chip offers flexible clocking options, accepting an external crystal oscillator or LVDS clock input (up to 65 MHz), and includes an internal PLL (Phase-Locked Loop) for frequency multiplication. The programmable output timing allows adjustable data valid windows and latch delays, simplifying interface alignment with downstream processors. Its 48-lead LFCSP package (7x7 mm) supports RoHS compliance and high-density PCB layouts.
Applications & Ecosystem
This CCD processor is widely used in high-end industrial inspection systems, digital radiography, fluorescence microscopy, and astronomical imaging. ADI provides a comprehensive evaluation kit (EV-AD9945SDZ) with GUI-based software for quick prototyping, along with reference designs for FPGA integration. The chip’s compatibility with standard CCD sensor timing protocols (e.g., two-phase/three-phase clocking) accelerates time-to-market for OEMs. It also supports optional features like dark-level subtraction and pixel binning via SPI configuration, enhancing flexibility for diverse imaging requirements.
Alternative CCD signal processor Models
● TVP5146M2 (Texas Instruments): A 10-bit CCD signal processor with 4x oversampling and NTSC/PAL video decoding, targeting consumer-grade surveillance and machine vision cameras.
● KAC-12040 (ON Semiconductor): A 12-bit CCD processor with 60 MSPS throughput and integrated timing generator, designed for high-speed document scanning and industrial automation.
● CXD3142GG (Sony): A 14-bit CCD ADC with on-chip CDS and PGA, optimized for professional broadcast cameras and high-dynamic-range (HDR) imaging.
● VSP5324 (Techwell): A low-power 10-bit CCD processor with built-in defect correction, suitable for cost-sensitive security cameras and portable medical endoscopes.
