Overview
The AD9941BSTZRL, produced by Analog Devices Inc., is a complete 14-bit, 56 MSPS imaging signal processor. This component is designed for imaging applications that do not require correlated double sampling (CDS) and is also suitable for processing the output signal from the AD9940 CDS front end product. It features a single-channel architecture that samples and conditions the output of CMOS imagers and CCD arrays already containing on-chip CDS.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Notes |
|---|---|---|---|---|---|
| Input Common-Mode Range | 1.1 | 2.3 | V | Linear operating range for VIN+, VIN− | |
| Maximum Input Amplitude | 1.0 | V p-p | VIN+ and VIN− signal swing | ||
| Maximum Differential Input Amplitude | 2.0 | V p-p | Defined as VIN+ − VIN− | ||
| Gain Control Resolution | 2 | Steps | |||
| Gain Range (CCD Mode) | 5.0 | 5.5 | 6.0 | dB | |
| ADC Resolution | 14-bit | ||||
| Sampling Rate | 56 MSPS | ||||
| Supply Voltage | 3.0 | V | |||
| Power Dissipation | 145 mW | @ 3.0 V, 56 MHz | |||
| Package Type | 48-Lead LQFP | ||||
| Operating Temperature Range | -25°C | +85°C |
Key Features
- Differential sensor input with 1 V p-p input range
- 0 dB/6 dB variable gain amplifier (VGA)
- Low noise optical black clamp circuit
- 14-bit, 56 MSPS analog-to-digital converter (ADC) with no missing codes guaranteed
- 3-wire serial digital interface for internal register programming
- Single 3 V supply operation
- Low power CMOS technology: 145 mW @ 3.0 V, 56 MHz
- 48-lead LQFP package
Applications
- Digital still cameras using CMOS imagers
- Professional HDTV camcorders
- Professional/high-end digital cameras
- Broadcast cameras
Q & A
- What is the primary function of the AD9941BSTZRL?
The AD9941BSTZRL is a complete analog signal processor for imaging applications, designed to sample and condition the output of CMOS imagers and CCD arrays.
- What is the resolution and sampling rate of the ADC in the AD9941BSTZRL?
The ADC has a resolution of 14 bits and a sampling rate of 56 MSPS.
- What type of gain amplifier does the AD9941BSTZRL feature?
The AD9941BSTZRL features a digitally controlled variable gain amplifier (VGA) with 0 dB/6 dB gain settings.
- How is the internal register programming done in the AD9941BSTZRL?
The internal registers are programmed through a 3-wire serial digital interface.
- What is the power supply requirement for the AD9941BSTZRL?
The AD9941BSTZRL operates from a single 3 V supply.
- What is the typical power dissipation of the AD9941BSTZRL?
The typical power dissipation is 145 mW at 3.0 V and 56 MHz.
- In what type of package is the AD9941BSTZRL available?
The AD9941BSTZRL is available in a 48-lead LQFP package.
- What is the operating temperature range of the AD9941BSTZRL?
The operating temperature range is from -25°C to +85°C.
- What are some common applications of the AD9941BSTZRL?
Common applications include digital still cameras, professional HDTV camcorders, professional/high-end digital cameras, and broadcast cameras.
- Does the AD9941BSTZRL support correlated double sampling (CDS)?
No, the AD9941BSTZRL is designed for imaging applications that do not require correlated double sampling (CDS).
