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Analog Devices Inc. AD9849AKSTRL
- Part No.:
- AD9849AKSTRL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Sensor and Detector Interfaces
- Package:
- 48-LQFP
- Datasheet:
-
AD9849AKSTRL.pdf
- Description:
- IC CCD SIGNAL PROC 12BIT 48-LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,528
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Product details
Overview
AD9849AKSTRL from Analog Devices is a 12-bit, 30 MHz CCD signal processor with integrated timing driver and analog front end. It performs correlated double sampling (CDS), pixel gain amplification (–2 dB to +10 dB), variable gain amplification (2 dB to 36 dB), black level clamping, and digitization - all in a single 48-lead LQFP package. It targets high-resolution digital still cameras requiring precise CCD clock generation and low-noise analog signal conditioning.
For engineers reviewing the AD9849AKSTRL datasheet, AD9849AKSTRL pinout, AD9849AKSTRL application, or AD9849AKSTRL equivalent, key selection criteria include its 30 MHz pixel rate, 12-bit ADC resolution, 5 V horizontal/RGB driver support, 1 ns timing resolution, and programmable clamp pulse sequencing for optical black calibration.
Technical Context
The AD9849AKSTRL integrates a Precision Timing™ core enabling sub-nanosecond clock edge placement (1 ns resolution at 30 MSPS) for H1–H4 and RG drivers. Its analog signal chain includes CDS, PxGA (64-step gain control), VGA (1024-step gain control), and a 12-bit ADC with 2.0 V full-scale input range referenced to VRT = 2.0 V and VRB = 1.0 V.
It supports both internal and external clamp pulse modes (CLPOB/CLPDM), programmable drive strength (up to 24 mA per H/RGB output), and a 3-wire serial interface (SCK ≤ 10 MHz) for register configuration. Power supplies are segregated: AVDD1–3 (2.7–3.6 V), DVDD1/DVDD2 (3.0–5.5 V for AD9849), DVDD3/DVDD4 (3.0 V), with shutdown power <1 mW.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC Resolution | 12-bit - delivers 4096 gray levels for high-fidelity image capture in DSLR and prosumer cameras. |
| Max Pixel Rate | 30 MHz - supports up to 4096 × 4096 pixel CCDs with real-time digitization and timing control. |
| VGA Gain Range | 2 dB to 36 dB (1024-step control) - enables wide dynamic range adaptation across varying lighting conditions. |
| H/RGB Driver Voltage | 5 V output capability - directly drives standard 5 V CCD horizontal and reset gate clocks without external level-shifting. |
| Timing Resolution | 1 ns @ 30 MSPS - allows precise sub-pixel clock edge positioning critical for minimizing CCD smear and fixed-pattern noise. |
| Power Dissipation | 450 mW @ 30 MHz, DVDD1/DVDD2 = 5 V - optimized for compact camera modules with thermal constraints. |
| Operating Temp | –20°C to +85°C - qualified for industrial and consumer imaging environments including outdoor photography gear. |
Pinout & Package
AD9849AKSTRL is housed in a 48-lead Thin Plastic Quad Flatpack (LQFP), ST-48 package (JEDEC MS-026AC), with exposed pad for thermal management. Pin 1 identifier located at top-left corner; lead pitch 0.5 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D0–D11 | Digital Output (MSB/LSB) | 12-bit parallel pixel data bus; D0 = LSB, D11 = MSB; outputs valid after 9-cycle pipeline delay. |
| H1–H4, RG | Digital Output (CCD Clock Drivers) | 5 V-tolerant, programmable-current (up to 24 mA) outputs for direct connection to CCD horizontal and reset gate inputs. |
| CLI | Digital Input (Master Clock) | 30 MHz system reference clock input; determines all internal timing and conversion rates. |
| CLPOB, CLPDM | Digital Input (Clamp Control) | External optical black and dummy black clamp pulses; enable precise black-level calibration in external timing mode. |
| SCK, SL, SDI | Digital Input (Serial Interface) | 3-wire SPI-compatible interface (≤10 MHz SCK); SL acts as frame sync for register writes. |
| CCDIN | Analog Input (CCD Signal) | Single-ended analog input accepting up to 1.0 V p-p CCD video signal with 500 mV reset transient tolerance. |
| VRT, VRB | Analog Output (Reference Decoupling) | Top (2.0 V) and bottom (1.0 V) voltage references for ADC; require 1.0 µF decoupling to AVSS. |
| BYP1–BYP3 | Analog Output (Bypass) | Internal analog supply bypass points; each requires 0.1 µF capacitor to AVSS for noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated CCD Timing Driver | Generates fully programmable H1–H4 and RG clocks with independent edge placement (±1 ns resolution), eliminating need for external timing ASICs. |
| Correlated Double Sampling (CDS) | On-chip CDS removes reset kTC noise and low-frequency CCD pedestal drift, improving SNR by >20 dB before digitization. |
| Programmable Clamp Sequencing | Four independent clamp pulse sequences (CLPOB/CLPDM/HBLK/PBLK) with toggle positions and polarity control enable adaptive black-level tracking across frame regions. |
| Pixel Gain Amplifier (PxGA®) | 64-step, –2 dB to +10 dB gain control applied pre-CDS to optimize dynamic range per color channel in RGB-CCD architectures. |
| Dual-Supply Digital I/O | DVDD1/DVDD2 support 3.0–5.5 V for H/RGB drivers while DVDD3/DVDD4 remain at 3.0 V - simplifies mixed-voltage board design. |
Applications
| Professional DSLR Camera | High-Resolution Scientific Imaging |
|---|---|
Use Scenario: Full-frame CCD sensor readout in low-light astrophotography with long exposures and precise dark-frame subtraction. IC Role / Device Role / Timing Role: Performs CDS, PxGA/VGA gain scaling, 12-bit digitization, and generates synchronized H1–H4/RGB clocks with 1 ns edge accuracy to suppress smear and timing-induced artifacts. Use Value: Enables >70 dB SNR and <0.2% peak nonlinearity at 30 MHz - critical for quantitative pixel intensity fidelity in calibrated imaging systems. | Use Scenario: Multi-spectral line-scan CCD acquisition in semiconductor wafer inspection tools requiring pixel-perfect timing alignment. IC Role / Device Role / Timing Role: Acts as complete AFE+TD subsystem: conditions analog CCD output, applies per-line black-level correction via CLPOB, and delivers deterministic 12-bit data with sub-pixel clock jitter. Use Value: Reduces system BOM by integrating 5 V H/RGB drivers and eliminates external timing generator, cutting PCB area by ≥35% vs. discrete solutions. |
| Industrial Machine Vision Camera | Medical Endoscopy System |
Use Scenario: High-speed 4K CCD capture in automated optical inspection (AOI) of PCB assemblies under variable ambient lighting. IC Role / Device Role / Timing Role: Digitizes CCD output at 30 MHz while dynamically adjusting VGA gain (2–36 dB) and clamp level (256-step) per field to maintain consistent contrast across illumination gradients. Use Value: Achieves 0.6 LSB rms total output noise at 6 dB VGA gain - ensures reliable defect detection down to sub-pixel intensity variations. | Use Scenario: Miniaturized CCD-based endoscope with constrained thermal envelope and strict EMI requirements. IC Role / Device Role / Timing Role: Provides low-power (450 mW active, <1 mW shutdown), single-chip AFE+timing solution with integrated 5 V drivers and 0.1 µF bypass network for clean analog performance. Use Value: Meets IEC 60601-1 leakage current limits via isolated analog/digital grounds (AVSS1–3, DVSS1–4) and ESD-hardened I/O (4 kV HBM). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CCD signal processing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDC1308IPWPR | 8-channel 16-bit time-to-digital converter; no integrated CCD timing driver or analog front end. | Designed for time-of-flight and laser scanning, not CCD analog signal conditioning. | Not suitable as functional replacement; lacks ADC, CDS, PxGA, VGA, and CCD clock generation. |
| AD9846ASTZ | 10-bit, 20 MHz version in same 48-lead LQFP package; shares identical pinout and register map but lower resolution and speed. | Targeted at cost-sensitive 1080p CCD cameras where 12-bit depth and 30 MHz throughput are unnecessary. | Select AD9846ASTZ only when system resolution and frame rate requirements are ≤10-bit/20 MHz. |
Compared with AD9849AKSTRL, AD9846ASTZ offers identical footprint and software compatibility but trades 2 bits of resolution and 10 MHz bandwidth for lower power (220 mW) and cost; TDC1308IPWPR serves entirely different measurement domains and cannot substitute for CCD signal processing.
Availability
AD9849AKSTRL is available at Aetrix Electronics and suitable for professional DSLR cameras, scientific imaging systems, industrial machine vision, medical endoscopy, and high-end surveillance requiring stable component supply and long-term manufacturability.
Supply support for AD9849AKSTRL 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, headquartered in Norwood, MA.
The AD9848/AD9849 product line was engineered specifically for CCD-based digital imaging systems, integrating precision timing, low-noise analog signal conditioning, and programmable clock generation into a single chip to replace multi-component AFE+TD solutions.
FAQ
What is the maximum pixel clock frequency supported by the AD9849AKSTRL?
The AD9849AKSTRL is specified for operation up to 30 MHz CLI (master clock) frequency, enabling real-time digitization of high-resolution CCD sensors with up to 4096 × 4096 pixels. This 30 MHz rating is validated across the full –20°C to +85°C temperature range and defines the upper limit for pixel rate, timing core resolution, and ADC conversion speed in the AD9849AKSTRL.
Does the AD9849AKSTRL support 5 V CCD clock drivers?
Yes, the AD9849AKSTRL supports 5 V output on its H1–H4 and RG driver pins (DVDD1/DVDD2 = 3.0–5.5 V), unlike the AD9848AKSTRL which is limited to 3 V. This allows direct interfacing with standard 5 V CCDs without external level shifters or buffer ICs, reducing component count and layout complexity in high-performance camera designs.
How many bits of resolution does the AD9849AKSTRL ADC provide?
The AD9849AKSTRL incorporates a true 12-bit analog-to-digital converter with guaranteed no missing codes, ±0.5 LSB typical differential nonlinearity, and 2.0 V full-scale input range. This 12-bit resolution enables 4096 distinct intensity levels per pixel - essential for high-fidelity color reproduction and low-noise post-processing in professional imaging applications using the AD9849AKSTRL.
What type of serial interface does the AD9849AKSTRL use for configuration?
The AD9849AKSTRL uses a 3-wire serial interface consisting of SL (serial load), SCK (serial clock), and SDI (serial data input), operating at up to 10 MHz SCK frequency. Register writes are synchronized to SL rising edge or HD/VD falling edges, supporting both single-register and continuous multi-register programming modes as defined in the AD9849AKSTRL register map.
Is the AD9849AKSTRL pin-compatible with the AD9848AKSTRL?
Yes, the AD9849AKSTRL is pin-compatible with the AD9848AKSTRL in the 48-lead LQFP package (ST-48), sharing identical pin functions and physical layout. However, the AD9849AKSTRL requires 5 V on DVDD1/DVDD2 for its higher-voltage drivers, whereas the AD9848AKSTRL operates at 2.7–3.6 V on those supplies - necessitating minor PCB supply routing changes when substituting the AD9849AKSTRL.
AD9849AKSTRL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 48-LQFP
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- 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:
- 48-LQFP (7x7)
AD9849AKSTRL FAQ
1.How can I place an order for AD9849AKSTRL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9849AKSTRL 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 AD9849AKSTRL reliable?
The price and inventory of AD9849AKSTRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9849AKSTRL is usually 5 days.
3.What payment methods are accepted for AD9849AKSTRL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9849AKSTRL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9849AKSTRL?
AD9849AKSTRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9849AKSTRL 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 AD9849AKSTRL?
For technical support, including AD9849AKSTRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9849AKSTRL requirements.
6.How does Aetrix verify that AD9849AKSTRL is sourced from the original manufacturer or authorized distributors?
All AD9849AKSTRL 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 AD9849AKSTRL meets industry standards.
7.What is the process for return or replacement of AD9849AKSTRL?
All AD9849AKSTRL units undergo pre-shipment inspection (PSI). If there is an issue with AD9849AKSTRL, 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 AD9849AKSTRL part is unused and in its original packaging.
Return procedure for AD9849AKSTRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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