Overview
The AD829AR, produced by Analog Devices Inc., is a high-speed, low-noise operational amplifier (op amp) designed for professional video and high-speed data conversion applications. Fabricated on Analog Devices' proprietary complementary bipolar (CB) process, this op amp offers exceptional performance with gains of 1 to 20 while maintaining a bandwidth greater than 50 MHz. It is particularly suited for driving reverse-terminated 50 Ω or 75 Ω cables, making it ideal for video applications such as NTSC, PAL, and SECAM color subcarrier frequencies.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage | ±5 V to ±15 V | ±4.5 V | ±18 V | V | |
| Quiescent Current | ±5 V, ±15 V | 5 mA | 6.5 mA | 9.0 mA | mA |
| Input Offset Voltage | tMIN to tMAX | 0.2 mV | 1 mV | 1 mV | mV |
| Input Bias Current | ±5 V, ±15 V | 3.3 µA | 7 µA | 9.5 µA | µA |
| Input Voltage Noise | 1.7 nV/√Hz | nV/√Hz | |||
| Input Current Noise | 1.5 pA/√Hz | pA/√Hz | |||
| Slew Rate | 230 V/µs | V/µs | |||
| Gain Bandwidth | 750 MHz | MHz | |||
| Open-Loop Gain | VO = ±2.5 V, RL = 500 Ω | 30 V/mV | 65 V/mV | 65 V/mV | V/mV |
| Common-Mode Rejection Ratio (CMRR) | 120 dB | dB | |||
| Power Supply Rejection Ratio (PSRR) | 120 dB | dB |
Key Features
- Low Noise and High Speed: The AD829 features an input voltage noise of 1.7 nV/√Hz and an input current noise of 1.5 pA/√Hz, making it suitable for high-speed and low-noise applications.
- High Bandwidth and Slew Rate: It achieves a 230 V/µs uncompensated slew rate and a 750 MHz gain bandwidth, ensuring excellent performance in high-speed applications.
- External Compensation: The AD829 includes an external compensation pin, allowing users to optimize the bandwidth for a given load and power supply voltage.
- Excellent DC Performance: It offers a minimum open-loop gain of 30 V/mV into loads as low as 500 Ω, a low input offset voltage of 1 mV maximum, and a low input offset drift of 0.3 µV/°C.
- Video Performance: The op amp exhibits a differential phase error of 0.04° and a 0.02% differential gain error at NTSC, PAL, and SECAM color subcarrier frequencies, making it outstanding for video applications.
- Flexible Operation: Specified for operation from ±5 V to ±15 V supplies, with a ±3 V output swing into a 150 Ω load.
- Package Options: Available in PDIP, CERDIP, SOIC, and 20-Terminal LCC packages, including extended temperature range options.
Applications
- Professional Video Applications: Ideal for driving reverse-terminated 50 Ω or 75 Ω cables in NTSC, PAL, and SECAM systems due to its excellent differential phase and gain performance.
- High-Speed Data Conversion: Used as an input buffer for 8-bit to 10-bit ADCs and as an output I/V converter for high-speed DACs due to its fast settling time (90 ns to 0.1%).
- General Purpose Amplification: Suitable for various high-speed and low-noise amplification tasks where its high bandwidth and low noise characteristics are beneficial.
Q & A
- What is the typical input voltage noise of the AD829AR?
The typical input voltage noise of the AD829AR is 1.7 nV/√Hz.
- What is the slew rate of the AD829AR?
The slew rate of the AD829AR is 230 V/µs.
- What are the power supply voltage ranges for the AD829AR?
The AD829AR is specified for operation from ±5 V to ±15 V supplies.
- What is the typical quiescent current of the AD829AR?
The typical quiescent current of the AD829AR is 5 mA to 6.5 mA depending on the supply voltage.
- What are the key video performance metrics of the AD829AR?
The AD829AR has a differential phase error of 0.04° and a 0.02% differential gain error at NTSC, PAL, and SECAM color subcarrier frequencies.
- Can the AD829AR drive heavy capacitive loads?
- What are the available package options for the AD829AR?
The AD829AR is available in PDIP, CERDIP, SOIC, and 20-Terminal LCC packages, including extended temperature range options.
- What is the open-loop gain of the AD829AR into a 500 Ω load?
The minimum open-loop gain of the AD829AR into a 500 Ω load is 30 V/mV.
- What is the common-mode rejection ratio (CMRR) of the AD829AR?
The CMRR of the AD829AR is 120 dB.
- What is the power supply rejection ratio (PSRR) of the AD829AR?
The PSRR of the AD829AR is 120 dB.
