Part A
AD9826KRSZ
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1496 ПКС
- Package
- SSOP-28
- Series
- Интерфейс - интерфейсы датчиков и детекторов
Replacement verdict
Compatible functional replacement candidate
The AD9826KRSZ and AD9822JRSRL are both complete 14-bit CCD/CIS analog signal processors from Analog Devices, sharing the same 28-lead SSOP package and 3.3 V/5 V mixed-supply architecture, so they can serve as functional replacement candidates in imaging front-end designs. However, the AD9826KRSZ integrates three independent sampling channels with correlated double sampling, while the AD9822JRSRL provides a single channel, so channel count, per-channel timing, and register configuration must be validated against the target system before substitution.
Channel Count
Validation required
Package Type
High match
Supply Voltage
High match
Resolution and Sampling Architecture
Validation required
Parts at a glance
Part B
AD9822JRSRL
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 8230 ПКС
- Package
- SSOP-28
- Series
- Интерфейс - интерфейсы датчиков и детекторов
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD9826KRSZ | AD9822JRSRL | Why it matters |
|---|---|---|---|
| Resolution (ADC bits) | 16 bit | 14 bit | Higher resolution provides finer digitization of the analog signal, affecting image quality and dynamic range in imaging front-ends. |
| Number of ADC channels | 3 (RGB) | 3 (RGB) | Channel count determines how many color/signal paths can be digitized simultaneously in a scanner or imaging system. |
| Maximum sample rate | 15 MSPS | 15 MSPS | Sample rate sets the maximum pixel throughput and thus the achievable scan speed for a given resolution. |
| Supply voltage | 5 V analog / 3.3 V digital | 5 V analog / 3.3 V digital | Supply requirements determine power rail compatibility and whether the part can drop into an existing board design. |
| Package | 28-lead SSOP | 28-lead SSOP | Package footprint and pinout must match for physical board-level substitutability. |
| Operating temperature range | 0°C to +70°C | 0°C to +70°C | Temperature range affects suitability for commercial versus industrial environments and reliability margins. |
| Internal programmable gain amplifier (PGA) | Yes | Yes | An integrated PGA allows signal scaling before digitization, affecting sensitivity and the need for external gain stages. |
| Correlated double sampling (CDS) | Yes | Yes | CDS reduces reset noise in CCD/imaging sensors, directly impacting noise performance and image fidelity. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9826KRSZ | AD9822JRSRL |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Type | Image Sensor | CCD Signal Processor, 14-Bit |
| Input Type | Logic | Logic |
| Output Type | Logic | Logic |
| Supply Current | 75 mA | 73 mA |
| Operating Temperature | -40°C ~ 85°C | 0°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the AD9826KRSZ and AD9822JRSRL?
The AD9826KRSZ is a complete 16-bit analog front-end (AFE) for CCD/contact image sensors, integrating a 16-bit 15 MSPS ADC, correlated double sampler (CDS), programmable gain amplifier (PGA), and a 3-channel or 1-channel input multiplexer in a 28-lead SSOP. The AD9822JRSRL is a 14-bit AFE with a 14-bit 15 MSPS ADC, CDS, PGA, and 3-channel input multiplexer in a 28-lead SSOP. The primary differences are ADC resolution (16-bit vs 14-bit) and the associated output data width and dynamic performance specifications.
Are the AD9826KRSZ and AD9822JRSRL pin-compatible?
Both devices are offered in a 28-lead SSOP package, but pin compatibility must be confirmed against the respective manufacturer datasheets. The AD9826 and AD9822 share a similar functional block diagram and pinout family, but designers must verify each pin function, supply pin, and configuration pin against the official Analog Devices datasheets before considering a layout-compatible substitution.
What is the maximum ADC sampling rate for each device?
Both the AD9826KRSZ and AD9822JRSRL feature a 15 MSPS maximum ADC conversion rate, making them suitable for high-speed line-scan and area-scan image sensor applications requiring real-time digitization.
What input channel configurations do these AFEs support?
Both devices integrate a 3-channel input multiplexer supporting three independent color channels (e.g., RGB) as well as a single-channel mode. This allows flexible interfacing with either color or monochrome CCD and contact image sensors.
Do both parts include a correlated double sampler (CDS) and programmable gain amplifier (PGA)?
Yes. Both the AD9826KRSZ and AD9822JRSRL integrate a correlated double sampler for noise reduction and a programmable gain amplifier for signal scaling prior to ADC conversion, which are essential functions for CCD signal processing.
What supply voltage do the AD9826KRSZ and AD9822JRSRL require?
Both devices operate from a single 5 V analog supply with a separate digital supply for the output interface, as specified in the Analog Devices datasheets. Designers should confirm the exact supply rail tolerances and digital I/O voltage levels from the official datasheets before finalizing the power design.
Which device should be selected for higher image fidelity requirements?
The AD9826KRSZ offers 16-bit ADC resolution versus 14-bit on the AD9822JRSRL, providing finer quantization and potentially higher dynamic range for applications demanding greater image fidelity, such as high-end document scanners and professional imaging systems. The AD9822JRSRL remains suitable for cost-sensitive applications where 14-bit resolution is sufficient.