My Inquiry
My Account
Analog Devices Inc. AD9945KCPRL7
- Part No.:
- AD9945KCPRL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Sensor and Detector Interfaces
- Package:
- 32-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD9945KCPRL7.pdf
- Description:
- AFE VIDEO ADC 12 BIT 3V
- Quantity:
- Payment:
- Shipping:
Inventory:21,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD9945KCPRL7 from Analog Devices is a complete 12-bit, 40 MSPS CCD signal processor IC featuring correlated double sampling (CDS), 10-bit programmable VGA (6–40 dB gain), optical black clamp, and single-supply 3 V operation. It processes interlaced/progressive scan CCD outputs in digital still cameras and camcorders with guaranteed no-missing-codes ADC performance and 1.2 LSBrms total output noise.
For engineers reviewing the AD9945KCPRL7 datasheet, AD9945KCPRL7 pinout, AD9945KCPRL7 application, or AD9945KCPRL7 equivalent, key selection criteria include its 40 MHz sampling rate, 32-lead LFCSP package, 12-bit straight-binary output coding, and integrated CDS/VGA/clamp/ADC signal chain for CCD analog front-end consolidation.
Technical Context
The AD9945KCPRL7 implements a single-channel CCD signal chain with precise timing control: SHP and SHD clocks sample reference and data levels on rising edges with 3 ns internal delay, while CLPOB enables per-line optical black clamping with ≥20-pixel pulse width recommended for low-noise performance. Its pipelined 12-bit ADC uses a 2.0 V full-scale input range and straight-binary coding.
Gain and offset are digitally controlled via a 3-wire serial interface (SCK up to 10 MHz) that configures 1024-step VGA gain, 256-step clamp level, polarity settings, power-down modes, and output latching behavior. Internal registers default to defined states at power-up, with automatic 1 ms reset calibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sampling Rate | 40 MSPS - supports high-resolution progressive-scan CCDs with real-time pixel throughput |
| ADC Resolution | 12 bits, no missing codes - ensures full dynamic range utilization without code gaps in image data |
| VGA Gain Range | 6 dB to 40 dB in 1024 steps - enables fine-grained exposure control across varying light conditions |
| Clamp Resolution | 256 steps - allows precise black-level tracking to suppress low-frequency CCD offset drift |
| Power Consumption | 140 mW @ 3 V - enables compact, battery-operated imaging systems with thermal manageability |
| Supply Voltage | 2.7 V to 3.6 V - compatible with standard 3 V logic rails and tolerant of typical board-level regulation variance |
| Total Output Noise | 1.2 LSBrms - translates to ~0.6 mVrms noise floor, critical for preserving shadow detail in low-light capture |
Pinout & Package
The AD9945KCPRL7 is housed in a 32-lead, 5 mm × 5 mm lead frame chip scale package (LFCSP, CP-32) with exposed thermal pad soldered to PCB ground plane per JEDEC MO-220-VHHD-2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D0–D11 | Digital Data Outputs | 12-bit straight-binary parallel output latched by DATACLK; three-state controllable via register bit |
| SHP / SHD | CDS Sampling Clock Inputs | Rising-edge triggered clocks for reference-level (SHP) and data-level (SHD) sampling; 3 ns internal aperture delay |
| CLPOB | Optical Black Clamp Clock | Activates black-level correction during shielded pixel interval; ≥20-pixel width minimizes clamp noise |
| CCDIN | Analog CCD Signal Input | AC-coupled input accepting 1 Vp-p signal with 500 mV allowable reset transient |
| REFT / REFB | ADC Reference Decoupling | Top (2.0 V) and bottom (1.0 V) reference voltage pins requiring local 0.1 µF decoupling |
| SCK / SDATA / SL | 3-Wire Serial Interface | Configures VGA gain, clamp level, polarity, and power modes; SCK ≤10 MHz, SL edge triggers register update |
Key Features
| Feature | Design Value |
|---|---|
| Integrated CDS + VGA + Clamp + ADC | Reduces external component count by eliminating discrete signal conditioning stages in CCD AFE designs |
| Programmable 10-bit VGA | Enables closed-loop auto-exposure algorithms with 0.035 dB/step resolution across 34 dB range |
| Per-line optical black clamping | Compensates for pixel-to-pixel and frame-to-frame black-level drift without requiring external DAC or op-amps |
| Single 3 V supply operation | Eliminates dual-rail power design complexity and reduces BOM cost versus ±5 V or split-supply alternatives |
| 32-lead LFCSP package | Provides 25 mm² footprint with thermal pad for efficient heat dissipation in space-constrained camera modules |
Applications
| Digital Still Cameras | Digital Video Camcorders |
|---|---|
Use Scenario: Capturing high-fidelity still images using progressive-scan CCD sensors in consumer DSLR or mirrorless bodies. IC Role / Device Role / Timing Role: Primary analog front-end processing raw CCD output-performing CDS noise rejection, gain scaling, black-level correction, and digitization before ASIC-based image pipeline. Use Value: Delivers 12-bit linear data with <0.1% peak nonlinearity and 1.2 LSBrms noise, preserving highlight/shadow detail essential for RAW image processing. | Use Scenario: Real-time video capture in handheld camcorders with interlaced CCD arrays operating at 480i/576i standards. IC Role / Device Role / Timing Role: Synchronizing to field/line timing generators to apply per-line CDS and optical black clamping aligned with CCD blanking intervals. Use Value: Enables stable video output with suppressed fixed-pattern noise and consistent black level across frames, meeting broadcast-grade SNR requirements. |
| PC Cameras | CCTV Cameras |
Use Scenario: USB-connected webcams requiring low-power, compact imaging subsystems with minimal external components. IC Role / Device Role / Timing Role: Standalone CCD signal conditioner interfacing directly to USB bridge ASICs via parallel D0–D11 bus and configurable DATACLK timing. Use Value: Achieves 140 mW total power at 40 MSPS, enabling passive cooling and compatibility with USB 2.0 power budgets. | Use Scenario: Outdoor surveillance cameras exposed to wide temperature ranges (−20°C to +85°C) and requiring long-term analog signal stability. IC Role / Device Role / Timing Role: Robust CCD AFE maintaining calibrated black level and gain accuracy over temperature via on-chip reference and digital register control. Use Value: Guarantees 1.0 dB gain accuracy and 40 dB PSR across industrial temperature range, minimizing thermal drift-induced image artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CCD signal processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Texas Instruments THS7353 | Triple-channel video filter driver (not ADC-integrated); requires external ADC and digital control | Targeted at composite/S-video analog video systems, not CCD-specific signal chains | Choose only if redesigning for multi-channel analog video with separate digitization path |
| ON Semiconductor KAE-02152 + CAT24C02 | Discrete CCD sensor + I²C EEPROM; lacks integrated CDS/VGA/clamp/ADC functionality | Requires full custom AFE design with precision op-amps, references, and FPGA-based timing control | Select only for highly specialized systems needing maximum flexibility and custom signal processing architecture |
Compared with THS7353 and KAE-02152+CAT24C02, the AD9945KCPRL7 provides a fully integrated, single-chip solution that eliminates external timing generation, analog filtering, and digitization stages-reducing bill-of-materials count by >12 components and shortening time-to-market for CCD-based imaging products.
Availability
AD9945KCPRL7 is available at Aetrix Electronics and suitable for digital still cameras, CCTV surveillance systems, and portable CCD imaging devices requiring stable component supply, long-lifecycle support, and guaranteed Pb-free compliance (RoHS-compliant LFCSP package).
Supply support for AD9945KCPRL7 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 industrial, automotive, communications, and consumer markets since 1965.
The AD9945KCPRL7 belongs to Analog Devices' CCD signal processor product line, engineered specifically to consolidate analog front-end functions for area-array CCD sensors in compact, low-power imaging systems.
FAQ
What is the maximum sampling rate supported by the AD9945KCPRL7?
The AD9945KCPRL7 supports a maximum sampling rate of 40 MSPS, as confirmed in its General Specifications table and timing diagrams. This rate enables real-time digitization of high-resolution progressive-scan CCD outputs. The device maintains guaranteed no-missing-codes performance and 12-bit linearity at this full rate. Operation above 40 MHz is not characterized and may result in degraded CDS rejection or increased DNL. The AD9945KCPRL7's internal clocking architecture is optimized for stable 40 MSPS operation with 25 ns minimum DATACLK period.
Does the AD9945KCPRL7 include an integrated analog-to-digital converter?
Yes, the AD9945KCPRL7 integrates a 12-bit, 40 MSPS analog-to-digital converter with straight-binary output coding and guaranteed no-missing-codes performance across its operating temperature range. The ADC features a 2.0 V full-scale input range and achieves 0.1% peak nonlinearity when processing a 500 mV input signal with 12 dB gain applied. Its pipelined architecture delivers 1.2 LSBrms total output noise, making it suitable for high-fidelity CCD digitization. This integrated ADC eliminates the need for external digitization circuitry in the AD9945KCPRL7 signal chain.
How is gain controlled on the AD9945KCPRL7?
Gain on the AD9945KCPRL7 is controlled through its 10-bit digitally programmable variable gain amplifier (VGA), which offers a 6 dB to 40 dB range in 1024 discrete steps. The VGA gain is set via the "VGA Gain" register (address 0x03) using the 3-wire serial interface. The gain follows the equation: Gain(dB) = 0.035 × VGA_Code + 5.3 dB. Each step corresponds to approximately 0.035 dB resolution, enabling precise auto-exposure control. The AD9945KCPRL7's VGA operates within the analog signal path between the CDS and ADC stages, and its setting persists across power cycles only if externally managed by host firmware.
What package type is used for the AD9945KCPRL7?
The AD9945KCPRL7 uses a 32-lead lead frame chip scale package (LFCSP) with 5 mm × 5 mm body dimensions and exposed thermal pad (CP-32 designation). This RoHS-compliant, Pb-free package conforms to JEDEC standard MO-220-VHHD-2. The exposed pad must be soldered to the PCB ground plane for optimal thermal performance and electrical stability. Pin 1 is marked with a dot indicator on the top surface, and the package supports reflow soldering per Analog Devices' recommended profile. The LFCSP footprint reduces board area by ~40% compared to equivalent QFP packages while maintaining robust thermal dissipation for the AD9945KCPRL7's 140 mW power dissipation.
Can the AD9945KCPRL7 operate from a single 3 V supply?
Yes, the AD9945KCPRL7 is designed for single 3 V supply operation, with specified operation from 2.7 V to 3.6 V across all power domains (AVDD, DVDD, DRVDD). It consumes 140 mW at 3.0 V and 40 MSPS, and includes separate analog (AVDD/AVSS), digital (DVDD/DVSS), and digital driver (DRVDD/DRVSS) supply pins to minimize noise coupling. The device's internal voltage references (REFT = 2.0 V, REFB = 1.0 V) are derived from the AVDD rail, and its 12-bit ADC uses a 2.0 V full-scale range compatible with the 3 V supply. This single-supply capability simplifies power design versus legacy ±5 V CCD processors.
AD9945KCPRL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 32-WFQFN Exposed Pad, CSP
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Type:
- CCD Signal Processor, 12-Bit
- Input Type:
- Logic
- Output Type:
- Logic
- Current - Supply:
- -
- Operating Temperature:
- -20°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-LFCSP-WQ (5x5)
AD9945KCPRL7 FAQ
1.How can I place an order for AD9945KCPRL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9945KCPRL7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AD9945KCPRL7 reliable?
The price and inventory of AD9945KCPRL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9945KCPRL7 is usually 5 days.
3.What payment methods are accepted for AD9945KCPRL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9945KCPRL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9945KCPRL7?
AD9945KCPRL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9945KCPRL7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AD9945KCPRL7?
For technical support, including AD9945KCPRL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9945KCPRL7 requirements.
6.How does Aetrix verify that AD9945KCPRL7 is sourced from the original manufacturer or authorized distributors?
All AD9945KCPRL7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD9945KCPRL7 meets industry standards.
7.What is the process for return or replacement of AD9945KCPRL7?
All AD9945KCPRL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD9945KCPRL7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AD9945KCPRL7 part is unused and in its original packaging.
Return procedure for AD9945KCPRL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD9945KCPRL7 Tags
-
RE46C100S8TF
Microchip Technology
-
XTR111AIDRCR
Texas Instruments
-
XTR111AIDGQR
Texas Instruments
-
XTR117AIDGKR
Texas Instruments
-
XTR111AIDGQT
Texas Instruments
-
XTR115UA/2K5
Texas Instruments
-
MAX14626ETT+T
Analog Devices Inc./Maxim Integrated
-
XTR116UA/2K5
Texas Instruments
-
XTR115U/2K5
Texas Instruments
-
XTR116U/2K5
Texas Instruments
-
PGA308AIDGSR
Texas Instruments
-
XTR300AIRGWR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
