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Analog Devices Inc. AD9846AJSTZRL
- Part No.:
- AD9846AJSTZRL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Sensor and Detector Interfaces
- Package:
- 48-LQFP
- Datasheet:
-
AD9846AJSTZRL.pdf
- Description:
- IC CCD SIGNAL PROC 10BIT 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,324
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Product details
Overview
AD9846AJSTZRL from Analog Devices is a complete 10-bit, 30 MSPS CCD signal processor IC designed for single-channel analog front-end conditioning of interlaced and progressive-scan CCD outputs. It integrates correlated double sampling (CDS), a 6-bit pixel gain amplifier (PxGA®), a 10-bit VGA (2 dB to 36 dB), black-level clamping, and a 10-bit ADC - all operating from a single 3 V supply with 117 mW typical power consumption.
For engineers reviewing the AD9846AJSTZRL datasheet, AD9846AJSTZRL pinout, AD9846AJSTZRL application, or AD9846AJSTZRL equivalent, this page delivers verified functional architecture, confirmed timing constraints (e.g., SHP/SHD rising-edge sampling, 3 ns internal delay), real-world noise performance (0.2 LSB rms), and precise gain accuracy specs across CCD/AUX1/AUX2 modes - critical for digital still camera, camcorder, and industrial imaging signal chain design.
Technical Context
The AD9846AJSTZRL implements a fully integrated CCD signal chain: input clamp removes optical black offset before CDS; CDS uses SHP/SHD rising edges with 3 ns aperture delay to reject reset kTC noise; PxGA applies programmable per-pixel gain (–2 dB to +10 dB in 64 steps) synchronized to HD/VD for Bayer color steering; VGA provides 10-bit-controlled 2–36 dB gain with monotonicity guaranteed.
It supports three operational modes: CCD mode (full signal chain), AUX1 mode (buffer + VGA only), and AUX2 mode (buffer + reduced VGA range 0–18 dB). All modes use the same 3-wire serial interface (SCK ≤10 MHz, SL/SDATA timing validated), share identical 48-lead LQFP package, and maintain 10-bit DNL ±0.5 LSB and no missing codes over –20°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC Resolution | 10-bit straight binary output; guarantees full 1024-code range with no missing codes - ensures lossless digitization of CCD video signals. |
| Max Sampling Rate | 30 MSPS DATACLK; enables real-time processing of high-resolution progressive-scan CCDs (e.g., 1280×960 at 30 fps). |
| VGA Gain Range | 2 dB to 36 dB in 1024 steps; covers full dynamic range from low-light to bright scenes while maintaining ±0.5 dB gain accuracy (code 91–1023). |
| PxGA Gain Range | –2 dB to +10 dB in 64 steps; supports white balance correction and pixel-level gain matching for RGB Bayer patterns. |
| Power Consumption | 117 mW typical at 3.0 V; includes all analog/digital blocks - enables compact, low-thermal industrial camera modules. |
| Input Clamp Accuracy | Clamp level resolution: 256 steps (0–63.75 LSB); measured at ADC output - allows precise black-level tracking without post-processing. |
| Timing Precision | SHP/SHD internal delay: 3.0 ns; DATACLK period: 32–33 ns; ensures sub-pixel synchronization critical for CDS noise rejection. |
Pinout & Package
AD9846AJSTZRL is housed in a 48-lead LQFP (ST-48) package with θJA = 92°C/W, lead-free finish, and RoHS compliance. Pin 1 identifier located at top-left corner (top view).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D0–D9 (Pins 3–12) | Digital data outputs | 10-bit parallel straight-binary ADC output; latched on DATACLK rising edge with 9-cycle pipeline delay - defines system latency budget. |
| SHP / SHD (Pins 21 / 22) | CDS sampling clocks | Rising-edge triggered; SHP samples reference level, SHD samples data level - timing alignment (tS1, tS2) directly impacts CDS noise cancellation. |
| CLPOB / CLPDM (Pins 20 / 23) | Black-level clamp clocks | CLPOB controls optical black clamp; CLPDM controls input clamp - overlapping pulses disable PBLK; minimum widths defined per mode. |
| HD / VD (Pins 18 / 24) | Color steering sync inputs | Drive PxGA gain selection logic; determine mosaic pattern (e.g., Bayer) and field/line sequencing - required for accurate RGB gain mapping. |
| SCK / SL / SDATA (Pins 48 / 46 / 47) | 3-wire serial interface | Configures all registers (VGA gain, PxGA gains, clamp level, mode control); SCK ≤10 MHz, SL rising edge updates registers - enables runtime gain adaptation. |
Key Features
| Feature | Design Value |
|---|---|
| Correlated Double Sampling (CDS) | 30 MSPS operation with 3 ns aperture delay; rejects kTC noise and low-frequency drift - essential for high-SNR CCD readout. |
| Pixel Gain Amplifier (PxGA®) | Four independent gain settings (–2 dB to +10 dB) switched per pixel via HD/VD; supports 7 color steering modes including Bayer mosaic - reduces digital white balance computation load. |
| Variable Gain Amplifier (VGA) | 2 dB to 36 dB range with 10-bit resolution and monotonic response; gain accuracy ±0.5 dB over full range - enables precise exposure control in varying light. |
| Optical Black Clamp Loop | Programmable clamp level (0–63.75 LSB) with 256-step resolution; tracks black-level drift line-by-line - maintains consistent DC offset without external DAC. |
| Multi-Mode Operation | CCD mode (full chain), AUX1 (buffer + VGA), AUX2 (buffer + 0–18 dB VGA); shared pinout and interface - simplifies hardware reuse across sensor types. |
Applications
| Digital Still Cameras | Digital Video Camcorders |
|---|---|
|
Use Scenario: High-resolution still capture using progressive-scan CCD sensors with Bayer color filter arrays. IC Role / Device Role / Timing Role: AD9846AJSTZRL performs CDS, PxGA-based per-pixel gain correction, and 10-bit digitization - synchronized to SHP/SHD/HD/VD timing for accurate color fidelity. Use Value: Enables true 10-bit image quality with <0.1% peak nonlinearity and 0.2 LSB rms noise - preserves shadow detail and avoids posterization in RAW processing. |
Use Scenario: Real-time video streaming from interlaced CCD sensors in consumer camcorders. IC Role / Device Role / Timing Role: AD9846AJSTZRL operates in CCD mode with VD-selected color steering to handle field-based gain switching - processes 30 fps at 30 MSPS with 9-cycle pipeline latency. Use Value: Delivers stable black level via optical clamp loop and low PSR (40 dB) - eliminates vertical banding and supply-induced flicker in battery-powered systems. |
| Industrial Imaging Systems | Machine Vision Inspection |
|
Use Scenario: High-speed inspection of printed circuit boards using area CCD sensors with custom color filter layouts. IC Role / Device Role / Timing Role: AD9846AJSTZRL runs in AUX1 mode for analog video input conditioning; VGA gain adjusted dynamically via serial interface to compensate for lighting variations. Use Value: 30 MSPS sampling and 10-bit linearity support >1000-line resolution at >60 fps - meets ISO 12233 resolution test requirements. |
Use Scenario: Defect detection in semiconductor wafer scanning where pixel-level gain uniformity is critical. IC Role / Device Role / Timing Role: AD9846AJSTZRL uses PxGA Mode 7 (user-specified) to apply custom per-pixel gain maps - programmed via serial interface before frame acquisition. Use Value: –2 dB to +10 dB PxGA range corrects quantum efficiency mismatch across sensor quadrants - improves defect SNR by ≥6 dB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CCD signal processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9844ASTZ | 8-bit ADC, 25 MSPS max, no PxGA, single VGA (0–42 dB), 48-LQFP | Lacks per-pixel gain control and color steering; suited for monochrome or simple RGB systems without white balance demands | Select when cost sensitivity outweighs color fidelity needs and resolution ≤8-bit suffices |
| TDC1308DAP | 12-bit ADC, 40 MSPS, integrated timing generator, no PxGA, 64-HTQFP | Higher resolution/speed but no built-in color steering logic; requires external FPGA for Bayer gain sequencing | Choose for high-speed monochrome inspection where timing integration reduces BOM count |
Compared with AD9844ASTZ and TDC1308DAP, the AD9846AJSTZRL uniquely combines 10-bit precision, 30 MSPS CDS, and hardware-accelerated PxGA color steering - eliminating FPGA-based gain sequencing and enabling direct Bayer RAW output with calibrated white balance.
Availability
AD9846AJSTZRL is available at Aetrix Electronics and suitable for digital still cameras, industrial imaging systems, and machine vision inspection requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant manufacturing.
Supply support for AD9846AJSTZRL 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 AD9846AJSTZRL belongs to Analog Devices' CCD signal processor product line, engineered specifically for high-fidelity analog conditioning of interlaced and progressive-scan CCD sensors in imaging applications demanding low noise, precise timing, and integrated color processing.
FAQ
What is the maximum clock rate supported by the AD9846AJSTZRL?
The AD9846AJSTZRL supports a maximum DATACLK, SHP, and SHD clock rate of 30 MHz - corresponding to a 33 ns clock period. This enables real-time digitization of high-resolution CCD sensors up to 30 frames per second. The internal timing specifications (e.g., tSHP = 5–8.3 ns, tID = 3.0 ns) are guaranteed under this condition with AVDD = DVDD = 3.0 V and TA = –20°C to +85°C.
Does the AD9846AJSTZRL include a built-in pixel gain amplifier (PxGA)?
Yes, the AD9846AJSTZRL integrates a proprietary Pixel Gain Amplifier (PxGA®) that provides four independently programmable gain settings (–2 dB to +10 dB) applied per-pixel based on HD/VD synchronization. It supports seven color steering modes including Mosaic Separate (Bayer), Interlace, and User-Specified - all configured via the 3-wire serial interface. PxGA gain is monotonic and resolved in 64 steps.
What are the power consumption modes of the AD9846AJSTZRL?
The AD9846AJSTZRL offers three power-down modes: Fast Recovery (85 mW, 0.1 ms wake-up), Standby (5 mW, 1 ms wake-up), and Total Power-Down (1 mW, 3 ms wake-up). In normal CCD-mode operation, it consumes 117 mW typical at 3.0 V. AUX1 and AUX2 modes draw 82 mW and 86 mW respectively - all values measured at fDATACLK = 30 MHz and TA = 25°C.
Can the AD9846AJSTZRL process non-CCD analog video signals?
Yes, the AD9846AJSTZRL supports two auxiliary input modes: AUX1IN and AUX2IN accept analog video signals and route them through the input buffer, VGA, and ADC - bypassing CDS and PxGA. AUX1 mode offers full 2–36 dB VGA range; AUX2 mode limits VGA to 0–18 dB with 512-step resolution. Both retain serial register control and 10-bit digitization at 30 MSPS.
What package type and thermal characteristics does the AD9846AJSTZRL use?
The AD9846AJSTZRL is packaged in a 48-lead LQFP (ST-48) with exposed pad, RoHS-compliant, and rated for –20°C to +85°C operation. Its thermal resistance is θJA = 92°C/W. The package includes dedicated analog/digital ground pins (AVSS ×3, DVSS ×2), separate analog/digital supplies (AVDD1/AVDD2, DVDD1/DVDD2), and DRVDD/DRVSS for clean digital output driving - minimizing supply coupling in mixed-signal designs.
AD9846AJSTZRL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 48-LQFP
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- CCD Signal Processor, 10-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)
AD9846AJSTZRL FAQ
1.How can I place an order for AD9846AJSTZRL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9846AJSTZRL 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 AD9846AJSTZRL reliable?
The price and inventory of AD9846AJSTZRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9846AJSTZRL is usually 5 days.
3.What payment methods are accepted for AD9846AJSTZRL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9846AJSTZRL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9846AJSTZRL?
AD9846AJSTZRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9846AJSTZRL 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 AD9846AJSTZRL?
For technical support, including AD9846AJSTZRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9846AJSTZRL requirements.
6.How does Aetrix verify that AD9846AJSTZRL is sourced from the original manufacturer or authorized distributors?
All AD9846AJSTZRL 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 AD9846AJSTZRL meets industry standards.
7.What is the process for return or replacement of AD9846AJSTZRL?
All AD9846AJSTZRL units undergo pre-shipment inspection (PSI). If there is an issue with AD9846AJSTZRL, 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 AD9846AJSTZRL part is unused and in its original packaging.
Return procedure for AD9846AJSTZRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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