Overview
The AD7886JD is a 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is part of the AD7886 series, known for its high-speed performance and low power dissipation. The AD7886JD features a sample-and-hold amplifier and uses a triple pass flash ADC technique with 15 comparators to achieve 12-bit accuracy. It operates from ±5 V power supplies and offers pin-strappable inputs for three different analog input ranges: 0 V to 5 V, 0 V to 10 V, or ±5 V. The device is fabricated in Analog Devices’ Linear Compatible CMOS process, combining precision bipolar circuits with low power CMOS logic.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12 bits | |
| Throughput Rate | 750 kHz / 1 MHz | |
| Conversion Time | 1.33 µs / 1 µs | |
| Signal-to-Noise Ratio (SNR) | 67 dB at 100 kHz input frequency | |
| Power Supply | ±5 V | |
| Power Dissipation | 250 mW typical | |
| Bus Access Time | 57 ns maximum | |
| Operating Temperature Range | 0°C to +70°C | |
| Package Type | 28-pin DIP or 28-pin leaded chip carrier |
Key Features
- High-speed performance with throughput rates of 750 kHz / 1 MHz and conversion times of 1.33 µs / 1 µs.
- Low power dissipation of 250 mW, achieved through the LC2MOS fabrication process.
- Dynamic specifications including signal-to-noise ratio, harmonic distortion, and inter-modulation distortion, making it suitable for DSP applications.
- Fast microprocessor interface with standard control signals (CS and RD) and fast bus access times.
- Pin-strappable inputs for three different analog input ranges: 0 V to 5 V, 0 V to 10 V, or ±5 V.
- On-chip clock oscillator eliminating the need for external clocks.
Applications
- Digital Signal Processing (DSP)
- Speech Recognition and Synthesis
- Spectrum Analysis
- DSP Servo Control
- General data acquisition applications requiring high speed and low power consumption.
Q & A
- What is the resolution of the AD7886JD ADC?
The AD7886JD has a resolution of 12 bits.
- What are the throughput rates of the AD7886JD?
The AD7886JD has throughput rates of 750 kHz / 1 MHz.
- What is the conversion time of the AD7886JD?
The conversion time of the AD7886JD is 1.33 µs / 1 µs.
- What is the signal-to-noise ratio (SNR) of the AD7886JD?
The SNR of the AD7886JD is 67 dB at a 100 kHz input frequency.
- What are the power supply requirements for the AD7886JD?
The AD7886JD operates from ±5 V power supplies.
- What is the typical power dissipation of the AD7886JD?
The typical power dissipation of the AD7886JD is 250 mW.
- What is the bus access time of the AD7886JD?
The bus access time of the AD7886JD is less than 57 ns.
- What are the available analog input ranges for the AD7886JD?
The AD7886JD offers pin-strappable inputs for three different analog input ranges: 0 V to 5 V, 0 V to 10 V, or ±5 V.
- Does the AD7886JD require an external clock?
No, the AD7886JD has an on-chip clock oscillator that eliminates the need for an external clock.
- What are some common applications of the AD7886JD?
The AD7886JD is commonly used in digital signal processing, speech recognition and synthesis, spectrum analysis, and DSP servo control.
