Overview
The AD9826KRSZ, produced by Analog Devices Inc., is a complete 16-bit imaging signal processor designed for various imaging applications. It 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 a Programmable Gain Amplifier (PGA), all of which are multiplexed to a high-performance 16-bit A/D converter. The device can operate at speeds greater than 15 MSPS and supports different sensor types, including Contact Image Sensors (CIS), CMOS active pixel sensors, and Focal Plane Arrays.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Maximum Conversion Rate (3-Channel Mode with CDS) | 30 | MSPS | ||
| Maximum Conversion Rate (1-Channel Mode with CDS) | 18 | MSPS | ||
| ADC Resolution | 16 | Bits | ||
| Power Supply Voltage (AVDD) | 4.75 | 5.0 | 5.25 | V |
| Operating Current (AVDD) | 75 | mA | ||
| Power Dissipation (3-Channel Mode) | 400 | mW | ||
| Operating Temperature Range | -40 | 85 | °C | |
| Storage Temperature Range | -65 | 150 | °C |
Key Features
- 3-channel architecture with input clamp, CDS, offset DAC, and PGA for each channel.
- High-performance 16-bit A/D converter with multiplexed 8-bit output word accessed through two read cycles or optional single byte output mode.
- Correlated Double Sampling (CDS) and 1 to 6x programmable gain.
- ±300mV programmable offset.
- Low power CMOS design with typical power consumption of 400 mW.
- 3-wire serial digital interface for internal register programming.
- 3V/5V digital I/O compatibility and 28-lead SSOP package.
Applications
- Flatbed document scanners.
- Digital copiers.
- Multifunction peripherals.
- Infrared imaging applications.
- Machine vision systems.
Q & A
- What is the primary function of the AD9826KRSZ? The AD9826KRSZ is a complete 16-bit imaging signal processor designed to sample and condition the outputs of trilinear color CCD arrays.
- What is the maximum conversion rate of the AD9826KRSZ in 3-channel mode with CDS? The maximum conversion rate in 3-channel mode with CDS is 30 MSPS.
- What types of sensors can the AD9826KRSZ support? The AD9826KRSZ can support Contact Image Sensors (CIS), CMOS active pixel sensors, and Focal Plane Arrays.
- What is the power consumption of the AD9826KRSZ in 3-channel mode? The typical power consumption in 3-channel mode is 400 mW.
- What is the operating temperature range of the AD9826KRSZ? The operating temperature range is from -40°C to 85°C.
- How is the digital output of the AD9826KRSZ accessed? The 16-bit digital output is multiplexed into an 8-bit output word, which is accessed using two read cycles or an optional single byte output mode.
- What is the package type of the AD9826KRSZ? The AD9826KRSZ is packaged in a 28-lead SSOP.
- Can the CDS amplifiers be disabled in the AD9826KRSZ? Yes, the CDS amplifiers can be disabled for use with sensors that do not require CDS.
- How is the internal register programming done in the AD9826KRSZ? The internal registers are programmed through a 3-wire serial interface.
- What are some typical applications of the AD9826KRSZ? Typical applications include flatbed document scanners, digital copiers, multifunction peripherals, infrared imaging, and machine vision systems.
