Overview
The AD827AQ, produced by Analog Devices Inc., is a high-speed, low-power dual operational amplifier. It is a dual version of the industry-standard AD847 op amp, offering high-speed performance at a low cost. This amplifier is designed to operate with power supplies ranging from ±5 V to ±15 V and is particularly suited for applications requiring fast signal processing and low power consumption.
Key Specifications
| Parameter | Value |
|---|---|
| Unity Gain Bandwidth | 50 MHz |
| Slew Rate | 300 V/µs |
| Settling Time (0.1%) | 120 ns |
| Input Offset Voltage | 2 mV max |
| Input Offset Voltage Drift | 15 µV/°C |
| Input Voltage Noise | 15 nV/√Hz |
| Common-Mode Rejection Ratio (CMRR) | 80 dB min |
| Power Supply Rejection Ratio (PSRR) | Better than 20 dB at 1 MHz |
| Total Supply Current | 10 mA (for both amplifiers) |
| Output Current | 30 mA |
| Operating Temperature Range | -40°C to +125°C (AD827J) |
| Package Options | 8-lead plastic mini-DIP, cerdip, 16-lead SOIC, 20-lead LCC |
Key Features
- High speed with 50 MHz unity-gain bandwidth and 300 V/µs slew rate.
- Low power consumption with a total supply current of 10 mA for both amplifiers.
- Excellent video performance with 0.04% differential gain and 0.19° differential phase error at 4.4 MHz.
- Good DC performance with a low input offset voltage of 2 mV max and 15 µV/°C drift.
- Ability to drive unlimited capacitive loads and 50 Ω and 75 Ω reverse-terminated loads.
- Low input voltage noise of 15 nV/√Hz.
- High CMRR and PSRR for minimal noise feedthrough.
Applications
- Video applications: The AD827 is ideal for driving coaxial cables with minimal differential gain and phase errors, making it suitable for various video signal processing tasks.
- High-speed data conversion systems: It serves as an input buffer for 8-bit to 10-bit A/D converters and as an output amplifier for high-speed D/A converters.
- Active filters: Its high bandwidth makes it suitable for multistage active filters.
- General-purpose high-speed amplification: It is useful in any application requiring fast signal processing and low power consumption.
Q & A
- What is the unity-gain bandwidth of the AD827AQ?
The AD827AQ has a unity-gain bandwidth of 50 MHz. - What is the slew rate of the AD827AQ?
The slew rate of the AD827AQ is 300 V/µs. - What is the settling time of the AD827AQ?
The settling time of the AD827AQ is 120 ns to 0.1%. - What is the input offset voltage of the AD827AQ?
The input offset voltage of the AD827AQ is 2 mV max. - Can the AD827AQ drive capacitive loads?
Yes, the AD827AQ can drive unlimited capacitive loads. - What are the power supply requirements for the AD827AQ?
The AD827AQ operates with power supplies ranging from ±5 V to ±15 V. - What is the total supply current for both amplifiers in the AD827AQ?
The total supply current for both amplifiers in the AD827AQ is 10 mA. - What are the typical applications of the AD827AQ?
The AD827AQ is typically used in video applications, high-speed data conversion systems, and active filters. - What is the common-mode rejection ratio (CMRR) of the AD827AQ?
The CMRR of the AD827AQ is a minimum of 80 dB. - What is the power supply rejection ratio (PSRR) of the AD827AQ?
The PSRR of the AD827AQ is better than 20 dB at 1 MHz.
