Overview
The AD8691AKSZ-REEL7 is a single, rail-to-rail output, single-supply operational amplifier produced by Analog Devices Inc. It is part of the AD8691, AD8692, and AD8694 family, known for their low cost, low offset and input voltages, low current noise, and wide signal bandwidth. These amplifiers are designed to operate over a wide range of applications, including power amplifier controls, laser diode control loops, portable and loop-powered instrumentation, and audio amplification for portable devices. The AD8691AKSZ-REEL7 is particularly suited for applications requiring high precision and low noise, making it a versatile component in various electronic systems.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage Range | 2.7 V to 6 V |
| Offset Voltage Drift | 2 µV/°C (AD8691), 1.3 µV/°C to 6 µV/°C (AD8692/AD8694) |
| Input Bias Current | 1 pA maximum |
| Noise Voltage Density | 8 nV/√Hz at 1 kHz |
| Total Harmonic Distortion + Noise (THD + N) | 0.003% at G = 1, RL = 600 Ω, f = 1 kHz, VO = 250 mV p-p |
| Slew Rate | 5 V/µs |
| Settling Time to 0.01% | 1 µs |
| Gain Bandwidth Product (GBP) | 10 MHz |
| Phase Margin | 60 Degrees |
| Output Voltage High (VOH) | 4.96 V to 4.98 V at IL = 1 mA |
| Output Voltage Low (VOL) | 20 mV to 40 mV at IL = 1 mA |
| Short-Circuit Current (ISC) | ±80 mA |
| Supply Current per Amplifier (ISY) | 0.95 mA to 1.05 mA at VO = 0 V |
Key Features
- Low offset voltage and drift: Ensures high precision in various applications.
- Very low input bias currents: Minimizes the impact on the input signal.
- Low noise: 8 nV/√Hz at 1 kHz, suitable for high-sensitivity applications.
- Low distortion: 0.003% THD + N at G = 1, RL = 600 Ω, f = 1 kHz, VO = 250 mV p-p.
- Wide bandwidth: 10 MHz GBP, suitable for high-frequency applications.
- Unity-gain stable: Can be used in a variety of gain configurations.
- Single-supply operation: Compatible with a wide range of power supply voltages (2.7 V to 6 V).
- Rail-to-rail output: Allows the output to swing close to the supply rails.
- Compact packaging: Available in SC70 and TSOT packages, ideal for space-constrained designs.
Applications
- Power amplifier (PA) controls
- Laser diode control loops
- Portable and loop-powered instrumentation
- Audio amplification for portable devices
- Photodiode amplification
- Battery-powered instrumentation
- Medical instruments
- Multipole filters and sensors
- ASIC input and output amplifiers
Q & A
- What is the supply voltage range for the AD8691AKSZ-REEL7?
The supply voltage range is from 2.7 V to 6 V. - What is the offset voltage drift for the AD8691?
The offset voltage drift is 2 µV/°C. - What is the input bias current for the AD8691AKSZ-REEL7?
The input bias current is 1 pA maximum. - What is the noise voltage density at 1 kHz for the AD8691AKSZ-REEL7?
The noise voltage density at 1 kHz is 8 nV/√Hz. - What is the slew rate of the AD8691AKSZ-REEL7?
The slew rate is 5 V/µs. - What is the settling time to 0.01% for the AD8691AKSZ-REEL7?
The settling time to 0.01% is 1 µs. - What is the gain bandwidth product (GBP) of the AD8691AKSZ-REEL7?
The GBP is 10 MHz. - What are the typical applications of the AD8691AKSZ-REEL7?
Typical applications include power amplifier controls, laser diode control loops, portable and loop-powered instrumentation, and audio amplification for portable devices. - What are the available package options for the AD8691AKSZ-REEL7?
The AD8691AKSZ-REEL7 is available in SC70 and TSOT packages. - What is the operating temperature range for the AD8691AKSZ-REEL7?
The operating temperature range is from −40°C to +125°C.
