Overview
The AD7880BQ, produced by Analog Devices Inc., is a high-speed, low-power, 12-bit analog-to-digital converter (ADC) designed to operate from a single +5 V supply. This component features a 3 µs track/hold amplifier and a 12 µs successive-approximation ADC, making it suitable for applications requiring fast conversion times and low power consumption. The AD7880BQ includes versatile interface logic and a multiple-input-range circuit, allowing it to accept both unipolar and bipolar input signals. It is fabricated in Analog Devices’ Linear Compatible CMOS (LC2MOS) process, combining precision bipolar circuits with low-power CMOS logic.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12-bit |
| Supply Voltage | +5 V |
| Conversion Time | 12 µs |
| Acquisition Time | 3 µs |
| Throughput Rate | 66 kHz |
| Power Consumption (Normal Operation) | 25 mW |
| Power Consumption (Power Save Mode) | 2 mW |
| Signal-to-Noise Ratio (SNR) | 70 dB |
| Package Types | 24-pin SOIC, 0.3 inch-wide DIP |
| Operating Temperature Range | –40°C to +85°C |
Key Features
- Fast conversion time of 12 µs and acquisition time of 3 µs.
- Low power consumption with 2 mW in power-down mode and 25 mW in normal operation.
- Internal track/hold amplifier and multiple-input-range circuit.
- Support for both unipolar and bipolar input signals.
- Fast bus access times and standard control inputs for easy interfacing with microprocessors and digital signal processors.
- High dynamic performance with specifications for harmonic distortion and signal-to-noise ratio.
Applications
- Battery-powered portable systems.
- Digital signal processing.
- Speech recognition and synthesis.
- High-speed modems.
- Control and instrumentation systems.
- Telecommunications, audio, sonar, and radar signal processing.
Q & A
- What is the resolution of the AD7880BQ ADC? The AD7880BQ has a 12-bit resolution.
- What is the supply voltage for the AD7880BQ? The AD7880BQ operates from a single +5 V supply.
- What is the conversion time of the AD7880BQ? The conversion time is 12 µs.
- What is the acquisition time of the AD7880BQ? The acquisition time is 3 µs.
- What is the throughput rate of the AD7880BQ? The throughput rate is 66 kHz.
- How much power does the AD7880BQ consume in normal operation? The AD7880BQ consumes 25 mW in normal operation.
- How much power does the AD7880BQ consume in power save mode? The AD7880BQ consumes 2 mW in power save mode.
- What is the signal-to-noise ratio (SNR) of the AD7880BQ? The SNR is 70 dB.
- In what package types is the AD7880BQ available? The AD7880BQ is available in 24-pin SOIC and 0.3 inch-wide DIP packages.
- What is the operating temperature range of the AD7880BQ? The operating temperature range is –40°C to +85°C.
