Overview
The AD7880BR, 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 is part of the LC2MOS (Linear Compatible CMOS) family, combining precision bipolar circuits with low-power CMOS logic. It features a 3 µs track/hold amplifier and a 12 µs successive-approximation ADC, making it suitable for applications requiring high-speed and low-power consumption. The AD7880BR is available in a 24-pin, 0.3 inch-wide, plastic or hermetic dual-in-line package (DIP) as well as a small 24-lead SOIC package.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Sampling Rate | 66 ksps |
| Number of Inputs | 2 |
| Input Type | Single Ended, Bipolar, Unipolar |
| Data Interface | Parallel |
| Configuration | S/H-ADC |
| Ratio - S/H:ADC | 1:1 |
| Number of A/D Converters | 1 |
| Architecture | SAR (Successive Approximation Register) |
| Reference Type | External, Supply |
| Voltage - Supply, Analog | 5 V |
| Voltage - Supply, Digital | 5 V |
| Operating Temperature | -40°C to +85°C |
| Package / Case | 24-DIP (0.300", 7.62mm), 24-SOIC (0.295, 7.50mm Width) |
| Integral Nonlinearity (INL) | 1 LSB |
| Differential Nonlinearity | 1 LSB |
Key Features
- Fast Conversion Time: 12 µs conversion time and 3 µs acquisition time, allowing for large input signal bandwidth.
- Low Power Consumption: 2 mW power consumption in power-down mode and 25 mW in normal operation, making it ideal for battery-powered and portable applications.
- High-Speed Operation: Supports a sampling frequency of up to 66 kHz and can convert full power signals up to 33 kHz.
- Dynamic Performance: Fully specified for dynamic performance parameters including harmonic distortion and signal-to-noise ratio (SNR) of 70 dB.
- Versatile Input Ranges: Accepts both unipolar and bipolar input signals with ranges of 0 V to 5 V and 0 V to 10 V.
- Compact Packaging: Available in 24-pin DIP and 24-lead SOIC packages).
Applications
- Battery Powered Portable Systems: Ideal for handheld and battery-powered devices due to its low power consumption).
- Digital Signal Processing: Suitable for applications in telecommunications, audio, sonar, and radar signal processing).
- Speech Recognition and Synthesis: Used in speech processing systems due to its high-speed and low-power characteristics).
- High Speed Modems: Applicable in high-speed data transmission systems).
- Control and Instrumentation: Used in various control and instrumentation applications requiring precise and fast analog-to-digital conversion).
Q & A
- What is the number of bits in the AD7880BR ADC?
The AD7880BR is a 12-bit analog-to-digital converter).
- What is the sampling rate of the AD7880BR?
The sampling rate of the AD7880BR is up to 66 ksps).
- What are the input ranges supported by the AD7880BR?
The AD7880BR supports input ranges of 0 V to 5 V and 0 V to 10 V, both unipolar and bipolar).
- What is the power consumption of the AD7880BR in normal operation?
The power consumption in normal operation is 25 mW, and 2 mW in power-down mode).
- What is the conversion time of the AD7880BR?
The conversion time is 12 µs, with an acquisition time of 3 µs).
- What are the package options for the AD7880BR?
The AD7880BR is available in 24-pin DIP and 24-lead SOIC packages).
- What is the operating temperature range of the AD7880BR?
The operating temperature range is -40°C to +85°C).
- What is the signal-to-noise ratio (SNR) of the AD7880BR?
The SNR is 70 dB).
- Is the AD7880BR suitable for battery-powered devices?
Yes, it is suitable due to its low power consumption).
- What are some typical applications of the AD7880BR?
Typical applications include battery-powered portable systems, digital signal processing, speech recognition and synthesis, high-speed modems, and control and instrumentation).
