Overview
The AD829AQ, produced by Analog Devices Inc., is a high-speed, low-noise operational amplifier (op amp) designed for various high-performance applications, particularly in professional video and high-speed data conversion. This op amp is notable for its exceptional voltage noise performance of 1.7 nV/√Hz and current noise of 1.5 pA/√Hz, making it an ideal preamplifier. The AD829AQ operates with a high slew rate of 230 V/µs and a gain bandwidth of 750 MHz, while consuming only 5 mA of current from the power supplies. Its external compensation pin allows for versatility in optimizing bandwidth for different loads and power supply voltages.
Key Specifications
| Parameter | Conditions | Min | Typ | Max |
|---|---|---|---|---|
| Input Offset Voltage | ±5 V, ±15 V | 0.2 mV | 1 mV | 1 mV |
| Input Offset Voltage Drift | ±5 V, ±15 V | 0.3 µV/°C | 0.3 µV/°C | 0.3 µV/°C |
| Input Bias Current | ±5 V, ±15 V | 3.3 µA | 7 µA | 7 µA |
| Input Capacitance (Differential) | 5 pF | 5 pF | 5 pF | |
| Open-Loop Gain | VO = ±2.5 V, RL = 500 Ω | 30 V/mV | 65 V/mV | 65 V/mV |
| Slew Rate | 230 V/µs | |||
| Gain Bandwidth | 750 MHz | |||
| Quiescent Current | ±15 V | 5 mA | 6.5 mA | 6.5 mA |
| Operating Temperature Range | −40°C to +125°C (AD829AQ) |
Key Features
- Low input voltage noise of 1.7 nV/√Hz and current noise of 1.5 pA/√Hz, making it suitable for high-sensitivity applications.
- High slew rate of 230 V/µs and a gain bandwidth of 750 MHz, enabling high-speed signal processing.
- External compensation pin for optimizing bandwidth for different loads and power supply voltages.
- Excellent dc performance with a minimum open-loop gain of 30 V/mV into loads as low as 500 Ω and a low input offset voltage of 1 mV maximum.
- High common-mode rejection and power supply rejection ratios of 120 dB.
- Ability to drive heavy capacitive loads and reverse-terminated 50 Ω and 75 Ω cables.
- Flexible operation specified for ±5 V to ±15 V power supplies.
Applications
- Professional video applications, including driving reverse-terminated 50 Ω and 75 Ω cables, with excellent differential phase and gain performance.
- High-speed data conversion, serving as an input buffer for 8-bit to 10-bit ADCs and as an output I/V converter for high-speed DACs.
- General-purpose high-speed amplification where low noise and high bandwidth are critical).
Q & A
- What is the input voltage noise of the AD829AQ?
The input voltage noise of the AD829AQ is 1.7 nV/√Hz).
- What is the slew rate of the AD829AQ?
The slew rate of the AD829AQ is 230 V/µs).
- What is the gain bandwidth of the AD829AQ?
The gain bandwidth of the AD829AQ is 750 MHz).
- What is the typical quiescent current of the AD829AQ?
The typical quiescent current of the AD829AQ is 5 mA to 6.5 mA, depending on the power supply voltage).
- What are the operating temperature ranges for the AD829AQ?
The operating temperature range for the AD829AQ is −40°C to +125°C).
- Can the AD829AQ drive heavy capacitive loads?
Yes, the AD829AQ can drive heavy capacitive loads).
- What are the common-mode rejection and power supply rejection ratios of the AD829AQ?
The common-mode rejection and power supply rejection ratios of the AD829AQ are both 120 dB).
- How does the external compensation pin enhance the functionality of the AD829AQ?
The external compensation pin allows for optimizing the bandwidth for different loads and power supply voltages, providing exceptional versatility).
- What are some typical applications of the AD829AQ?
The AD829AQ is typically used in professional video applications, high-speed data conversion, and general-purpose high-speed amplification).
- What is the input offset voltage of the AD829AQ?
The input offset voltage of the AD829AQ is a maximum of 1 mV).
