Overview
The AD9826KRSZRL is a complete analog signal processor designed for imaging applications, manufactured by Analog Devices Inc. This device features a 3-channel architecture that is optimized to sample and condition the outputs of trilinear color CCD arrays. Each channel includes an input clamp, Correlated Double Sampler (CDS), offset DAC, and Programmable Gain Amplifier (PGA), all multiplexed to a high-performance 16-bit A/D converter. The AD9826 is versatile and can operate with various types of sensors, including Contact Image Sensors (CIS), CMOS active pixel sensors, and Focal Plane Arrays. It operates from a single 5 V power supply and is packaged in a 28-lead SSOP, making it suitable for a range of imaging applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Maximum Conversion Rate (3-Channel Mode with CDS) | - | 30 | - | MSPS |
| Maximum Conversion Rate (2-Channel Mode with CDS) | - | 30 | - | MSPS |
| Maximum Conversion Rate (1-Channel Mode with CDS) | - | 18 | - | MSPS |
| ADC Resolution | - | 16 Bits | - | - |
| Power Supply | 4.75 | 5.0 | 5.25 | V |
| Operating Current (AVDD) | 75 | - | - | mA |
| Operating Current (DRVDD) | 5 | - | - | mA |
| Power Dissipation (3-Channel Mode) | - | 400 | - | mW |
| Power Dissipation (1-Channel Mode) | - | 300 | - | mW |
| Operating Temperature Range | -40 | - | 85 | °C |
| Storage Temperature Range | -65 | - | 150 | °C |
Key Features
- 16-Bit 15 MSPS A/D Converter
- 3-Channel 16-Bit Operation up to 15 MSPS
- 1-Channel 16-Bit Operation up to 12.5 MSPS
- 2-Channel Mode for Mono Sensors with Odd/Even Outputs Correlated Double Sampling
- 1~6× Programmable Gain
- ±300 mV Programmable Offset
- Input Clamp Circuitry
- Internal Voltage Reference
- Multiplexed Byte-Wide Output
- Optional Single Byte Output Mode
- 3-Wire Serial Digital Interface
- 3 V/5 V Digital I/O Compatibility
- 28-Lead SSOP Package
- Low Power CMOS: 400 mW (Typ)
- Power-Down Mode Available
Applications
- Flatbed Document Scanners
- Digital Copier
- Multifunction Peripherals
- Infrared Imaging Applications
- Machine Vision
Q & A
- Can the AD9826 operate at lower performance than the 15 MSPS?
Yes, the AD9826 can operate at speeds greater than 15 MSPS with reduced performance.
- What is the operating power supply of AD9826?
The AD9826 operates from a single 5 V power supply, typically consuming 400 mW of power.
- How many different operating modes does the AD9826 have?
The AD9826 can be operated in six different modes: 3-Channel CDS Mode, 3-Channel SHA Mode, 2-Channel CDS Mode, 2-Channel SHA Mode, 1-Channel CDS Mode, and 1-Channel SHA Mode.
- What types of sensors can the AD9826 work with?
The AD9826 can work with trilinear color CCD arrays, Contact Image Sensors (CIS), CMOS active pixel sensors, and Focal Plane Arrays.
- What is the resolution of the A/D converter in the AD9826?
The AD9826 features a 16-bit A/D converter.
- How is the digital output of the AD9826 accessed?
The 16-bit digital output is multiplexed into an 8-bit output word, which is accessed using two read cycles. There is also an optional single byte output mode.
- What is the package type of the AD9826?
The AD9826 is packaged in a 28-lead SSOP (Shrink Small Outline Package).
- Is the AD9826 compatible with different digital I/O voltages?
Yes, the AD9826 is compatible with both 3 V and 5 V digital I/O.
- Does the AD9826 have a power-down mode?
Yes, the AD9826 has a power-down mode available.
- How is the AD9826 programmed?
The internal registers of the AD9826 are programmed through a 3-wire serial interface, allowing for adjustments of gain, offset, and operating mode).
