Overview
The AD9840AJSTZRL, produced by Analog Devices Inc., is a complete 10-bit analog signal processor specifically designed for Charge-Coupled Device (CCD) applications. This integrated circuit features a 40 MHz single-channel architecture, making it suitable for sampling and conditioning the outputs of both interlaced and progressive scan area CCD arrays. The AD9840A includes a comprehensive signal chain consisting of an input clamp, correlated double sampler (CDS), digitally controlled variable gain amplifier (VGA), black level clamp, and a 10-bit analog-to-digital converter (ADC). The device operates from a single 3 V power supply and is packaged in a 48-lead LQFP package, ensuring low power consumption and compact design.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Temperature Range (Operating) | -20 | 85 | °C | |
| Temperature Range (Storage) | -65 | 150 | °C | |
| Power Supply Voltage | 2.7 | 3.0 | 3.6 | V |
| Power Consumption (Normal Operation) | 155 | mW | ||
| Maximum Clock Rate | 40 | MHz | ||
| A/D Converter Resolution | 10 Bits | |||
| Differential Nonlinearity (DNL) | ±0.5 | ±1.0 | LSB | |
| Full-Scale Input Voltage | 2.0 | V | ||
| Logic Input High Level Voltage | 2.1 | V | ||
| Logic Input Low Level Voltage | 0.6 | V |
Key Features
- 40 MHz single-channel architecture for sampling and conditioning CCD outputs.
- Correlated Double Sampler (CDS) with variable gain (4 dB to 6 dB) and 6-bit resolution.
- 10-bit Variable Gain Amplifier (VGA) with 2 dB to 36 dB gain range and 1023 steps of gain control.
- Low noise clamp circuits and analog preblanking function.
- 10-bit 40 MSPS A/D converter with straight binary data output coding.
- Auxiliary inputs with VGA and input clamp for additional signal processing.
- 3-wire serial digital interface for programming internal registers.
- Single 3 V power supply operation with low power consumption (typically 155 mW).
- 48-lead LQFP package and RoHS3 compliance.
Applications
- Digital video camcorders.
- Digital still cameras.
- Industrial imaging applications.
Q & A
- What is the primary function of the AD9840AJSTZRL?
The AD9840AJSTZRL is a complete analog signal processor designed for Charge-Coupled Device (CCD) applications, sampling and conditioning CCD outputs.
- What is the maximum clock rate of the AD9840AJSTZRL?
The maximum clock rate is 40 MHz.
- What is the resolution of the A/D converter in the AD9840AJSTZRL?
The A/D converter has a resolution of 10 bits.
- What is the power supply voltage range for the AD9840AJSTZRL?
The power supply voltage range is from 2.7 V to 3.6 V.
- What is the typical power consumption of the AD9840AJSTZRL?
The typical power consumption is 155 mW at 3.0 V supply.
- What is the package type of the AD9840AJSTZRL?
The package type is 48-lead LQFP.
- Is the AD9840AJSTZRL RoHS compliant?
Yes, the AD9840AJSTZRL is RoHS3 compliant.
- What are the key applications of the AD9840AJSTZRL?
The key applications include digital video camcorders, digital still cameras, and industrial imaging.
- How is the internal register programmed in the AD9840AJSTZRL?
The internal register is programmed through a 3-wire serial digital interface.
- What are the programmable features of the AD9840AJSTZRL?
The programmable features include gain adjustment, black level adjustment, input configuration, and power-down modes.
