Overview
The AD8031BR from Analog Devices Inc. is a single-supply, voltage feedback operational amplifier designed for high-speed applications. It features an impressive 80 MHz small signal bandwidth and a 30 V/μs slew rate, making it suitable for a variety of high-performance systems. The amplifier is fabricated using Analog Devices' eXtra Fast Complementary Bipolar (XFCB) process, which enhances its dynamic range and speed. It operates on a single supply voltage ranging from 2.7 V to 12 V and is fully specified for +2.7 V, +5 V, and ±5 V supplies. This amplifier is known for its low power consumption, with a supply current of 900 μA per amplifier, and its rail-to-rail input and output capabilities, which extend the input common-mode range beyond the supply rails by 200 mV and allow the output to swing within 20 mV of either rail.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | Analog Devices, Inc. |
| Voltage - Supply Span (Min) | 2.7 V |
| Voltage - Supply Span (Max) | 12 V |
| Voltage - Input Offset | 500 µV |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Slew Rate | 35 V/μs |
| Operating Temperature | -40°C ~ 85°C |
| Current - Supply | 900 µA |
| Current - Output / Channel | 15 mA |
| Current - Bias Input | 450 nA |
| -3db Bandwidth | 80 MHz |
| Amplifier Type | Voltage Feedback |
| Input Common-Mode Range | Extends beyond rails by 200 mV |
| Output Voltage Swing | Within 20 mV of either rail |
Key Features
- High speed performance with 80 MHz small signal bandwidth and 30 V/μs slew rate.
- Rail-to-rail input and output capabilities, extending the input common-mode range beyond the supply rails by 200 mV and allowing the output to swing within 20 mV of either rail.
- Low power consumption with a supply current of 900 μA per amplifier.
- No phase reversal with input 0.5 V beyond supplies.
- Fast settling time of 125 ns to 0.1%.
- Low distortion: -62 dBc at 1 MHz, VO = 2 V p-p, and -86 dBc at 100 kHz, VO = 4.6 V p-p.
- Output current capability of 15 mA per channel.
- High grade option with VOS (maximum) = 1.5 mV.
Applications
- High speed, battery-operated systems.
- High component density systems.
- Portable test instruments.
- A/D buffers.
- Active filters.
- High speed, set-and-demand amplifiers.
Q & A
- What is the minimum supply voltage for the AD8031BR?
The minimum supply voltage is 2.7 V.
- What is the maximum supply voltage for the AD8031BR?
The maximum supply voltage is 12 V.
- What is the slew rate of the AD8031BR?
The slew rate is 35 V/μs.
- What is the -3 dB bandwidth of the AD8031BR?
The -3 dB bandwidth is 80 MHz.
- Does the AD8031BR have rail-to-rail input and output capabilities?
- What is the settling time of the AD8031BR to 0.1%?
The settling time is 125 ns to 0.1%.
- What is the typical supply current per amplifier for the AD8031BR?
The typical supply current per amplifier is 900 μA.
- What is the maximum output current per channel for the AD8031BR?
The maximum output current per channel is 15 mA.
- What are some common applications of the AD8031BR?
Common applications include high speed, battery-operated systems, portable test instruments, A/D buffers, active filters, and high speed, set-and-demand amplifiers.
- What is the operating temperature range for the AD8031BR?
The operating temperature range is -40°C to 85°C.
