Overview
The AD7880BRZ is a high-speed, low-power, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component operates from a single +5 V supply and is designed for applications requiring fast conversion times and low power consumption. The AD7880 features a 3 µs track/hold amplifier and a 12 µs successive-approximation ADC, along with versatile interface logic and a multiple-input-range circuit. It is fabricated using Analog Devices' Linear Compatible CMOS (LC2MOS) process, which combines precision bipolar circuits with low power CMOS logic.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12-bit |
| Supply Voltage | +5 V |
| Conversion Time | 12 µs |
| Track/Hold Acquisition Time | 3 µs |
| Throughput Rate | Up to 66 kHz |
| Power Consumption (Normal Operation) | 25 mW (typical) |
| Power Consumption (Power-Down Mode) | 2 mW (typical) |
| Signal-to-Noise Ratio (SNR) | 70 dB |
| Package Type | 24-Lead SOIC (Wide), 24-Pin PDIP |
| Operating Temperature Range | -40°C to +85°C |
Key Features
- Fast conversion time of 12 µs and acquisition time of 3 µs, allowing for large input signal bandwidth.
- Low power consumption with 2 mW in power-down mode and 25 mW in normal operation.
- Internal resistor network for accepting both unipolar and bipolar input signals.
- Power save feature to reduce power consumption when not in use.
- Fast bus access times and standard control inputs for easy interfacing with modern microprocessors and digital signal processors.
- High dynamic performance specifications including 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 AD7880BRZ ADC?
The AD7880BRZ has a resolution of 12 bits.
- What is the supply voltage for the AD7880BRZ?
The AD7880BRZ operates from a single +5 V supply.
- What is the conversion time of the AD7880BRZ?
The conversion time is 12 µs.
- What is the track/hold acquisition time of the AD7880BRZ?
The track/hold acquisition time is 3 µs.
- What is the maximum throughput rate of the AD7880BRZ?
The maximum throughput rate is up to 66 kHz.
- How much power does the AD7880BRZ consume in normal operation and power-down mode?
In normal operation, it consumes 25 mW (typical), and in power-down mode, it consumes 2 mW (typical).
- What is the signal-to-noise ratio (SNR) of the AD7880BRZ?
The SNR is 70 dB.
- In what packages is the AD7880BRZ available?
The AD7880BRZ is available in 24-Lead SOIC (Wide) and 24-Pin PDIP packages.
- What are some common applications of the AD7880BRZ?
Common applications include battery-powered portable systems, digital signal processing, speech recognition and synthesis, high-speed modems, control and instrumentation systems, and telecommunications.
- How does the AD7880BRZ handle both unipolar and bipolar input signals?
The AD7880BRZ includes an internal resistor network that allows it to accept both unipolar and bipolar input signals while operating from a single +5 V supply.
