Overview
The AD8691AUJZ-REEL, produced by Analog Devices Inc., is a low-cost, single, rail-to-rail output, single-supply operational amplifier. This device is part of the AD8691, AD8692, and AD8694 family, known for their low offset and input voltages, low current noise, and wide signal bandwidth. The AD8691 is particularly suited for applications requiring high precision and low noise, making it ideal for a variety of uses including photodiode amplification, battery-powered instrumentation, medical instruments, and portable audio devices.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Offset Voltage Drift | 2 µV/°C to 12 µV/°C | -40°C to +125°C |
| Input Bias Current | 1 pA maximum | - |
| Noise | 8 nV/√Hz | - |
| Distortion | 0.0006% | - |
| Bandwidth | 10 MHz | - |
| Supply Voltage Range | 2.7 V to 6 V | - |
| Output Voltage High | 4.96 V to 4.98 V at IL = 1 mA | -40°C to +125°C |
| Output Voltage Low | 20 mV to 40 mV at IL = 1 mA | -40°C to +125°C |
| Short-Circuit Current | ±80 mA | - |
| Supply Current/Amplifier | 0.95 mA to 1.05 mA at VO = 0 V | -40°C to +125°C |
| Slew Rate | 5 V/µs | RL = 2 kΩ |
| Settling Time | 1 µs to 0.01% | - |
Key Features
- Low offset voltage and drift: Ensures high precision over temperature variations.
- Very low input bias currents: Minimizes the impact on high impedance sources.
- Low noise: 8 nV/√Hz, suitable for sensitive applications.
- Low distortion: 0.0006%, ideal for audio and other AC applications.
- Wide bandwidth: 10 MHz, supporting high-speed signal processing.
- Unity-gain stable: Simplifies circuit design.
- Rail-to-rail output: Maximizes dynamic range.
- Single-supply operation: Compatible with a wide range of power supply voltages (2.7 V to 6 V).
- Compact packaging: Available in 5-lead SC70 and TSOT packages, reducing external noise pickup.
Applications
- Photodiode amplification
- Battery-powered instrumentation
- Medical instruments
- Multipole filters
- Sensors
- Portable audio devices
- Power amplifier (PA) controls
- Laser diode control loops
- Portable and loop-powered instrumentation
- ASIC input and output amplifiers
Q & A
- What is the offset voltage drift of the AD8691?
The offset voltage drift of the AD8691 is 2 µV/°C to 12 µV/°C over the temperature range of -40°C to +125°C. - What is the input bias current of the AD8691?
The input bias current of the AD8691 is 1 pA maximum. - What is the noise level of the AD8691?
The noise level of the AD8691 is 8 nV/√Hz. - What is the distortion level of the AD8691?
The distortion level of the AD8691 is 0.0006%. - What is the bandwidth of the AD8691?
The bandwidth of the AD8691 is 10 MHz. - What is the supply voltage range for the AD8691?
The supply voltage range for the AD8691 is 2.7 V to 6 V. - What are the output voltage high and low levels for the AD8691?
The output voltage high is 4.96 V to 4.98 V at IL = 1 mA, and the output voltage low is 20 mV to 40 mV at IL = 1 mA, over the temperature range of -40°C to +125°C. - What is the short-circuit current of the AD8691?
The short-circuit current of the AD8691 is ±80 mA. - What is the supply current per amplifier for the AD8691?
The supply current per amplifier for the AD8691 is 0.95 mA to 1.05 mA at VO = 0 V, over the temperature range of -40°C to +125°C. - What is the slew rate of the AD8691?
The slew rate of the AD8691 is 5 V/µs with RL = 2 kΩ.
