Overview
The AD848JRZ-REEL is a high-speed, low-power monolithic operational amplifier produced by Analog Devices Inc. It is part of the AD848 series, which is known for its combination of fast AC and good DC performance. The AD848 is internally compensated, making it stable for closed-loop gains of 5 or greater. This op amp utilizes Analog Devices’ junction isolated complementary bipolar (CB) process, enabling high speed with a low current requirement of 4.8 mA from the power supplies.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Input Offset Voltage | ±5 V | 0.3 | 1 | 1.3 | mV |
| Input Offset Voltage | ±15 V | 0.3 | 1 | 1.3 | mV |
| Input Bias Current | ±5 V, ±15 V | 3.3 | 6.6 | 7.5 | µA |
| Open Loop Gain | VO = ±2.5 V, RLOAD = 500 Ω | 30 | 50 | V/mV | |
| Gain Bandwidth | AVCL ≥ 5, ±5 V | 125 | MHz | ||
| Full Power Bandwidth | VO = 2 V p-p, RL = 500 Ω, ±5 V | 24 | MHz | ||
| Slew Rate | RLOAD = 1 kΩ, ±5 V | 200 | V/µs | ||
| Settling Time to 0.1% | 10 V Step, AV = –4, ±5 V | 65 | ns |
Key Features
- High speed with a gain bandwidth of up to 175 MHz and a slew rate of up to 200 V/µs.
- Low power consumption, requiring only 4.8 mA of current from the power supplies.
- Internally compensated for stability at closed-loop gains of 5 or greater.
- Low input offset voltage and low input bias current, making it suitable for high precision applications.
- Available in various packages including plastic, hermetic cerdip, and small outline packages.
- Stable into any capacitive load without oscillation, though pulse integrity may be degraded.
Applications
- Cable drivers: The AD848 is suitable for driving cables due to its stability into capacitive loads.
- 8- and 10-bit data acquisition systems: Its high speed and low noise make it ideal for high-frequency data acquisition systems.
- Video and RF amplification: The op amp’s high gain bandwidth and low noise characteristics are beneficial for video and RF applications.
- Signal generators: The AD848’s performance makes it a good choice for signal generation in various electronic systems).
Q & A
- What is the typical gain bandwidth of the AD848?
The typical gain bandwidth of the AD848 is 125 MHz for ±5 V and 175 MHz for ±15 V).
- How much current does the AD848 consume from the power supplies?
The AD848 consumes 4.8 mA of current from the power supplies).
- What is the input offset voltage of the AD848?
The input offset voltage of the AD848 is typically 1 mV for both ±5 V and ±15 V operation).
- Is the AD848 stable into capacitive loads?
Yes, the AD848 is stable into any capacitive load without oscillation, though pulse integrity may be degraded).
- What are the typical applications of the AD848?
The AD848 is typically used in cable drivers, 8- and 10-bit data acquisition systems, video and RF amplification, and signal generators).
- What packages are available for the AD848?
The AD848 is available in plastic, hermetic cerdip, and small outline packages).
- What is the slew rate of the AD848?
The slew rate of the AD848 is typically 200 V/µs for ±5 V operation).
- How does the AD848 handle noise in high-frequency systems?
The AD848 has low wideband noise and high gain bandwidths, making it well-suited as a pre-amp for high-frequency systems. Input voltage noise is the dominant source of noise, and other noise sources can be minimized by keeping resistor values small).
- What is the settling time of the AD848 to 0.1%?
The settling time of the AD848 to 0.1% is typically 65 ns for a 10 V step with a gain of –4).
- Is the AD848 suitable for high precision applications?
Yes, the AD848 is suitable for high precision applications due to its low input offset voltage and low input bias current).
