Overview
The AMP03GPZ, produced by Analog Devices Inc., is a monolithic unity-gain, high-speed differential amplifier. It is designed to serve as a basic analog building block for various differential amplifier and instrumentation applications. The AMP03 features a matched thin-film resistor network, ensuring stable operation over temperature without the need for expensive external matched components. This amplifier is known for its high common-mode rejection (CMR) and fast settling time, making it ideal for applications requiring precise signal processing in noisy environments.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | VCM = 0 V | -400 | +10 | +400 | µV |
| Gain Error | No Load, VIN = ±10 V, RS = 0 Ω | 0.00004 | 0.008 | 0.008 | % | |
| Input Voltage Range | IVR | ±20 | ±20 | ±20 | V | |
| Common-Mode Rejection | CMR | VCM = ±10 V | 80 | 100 | 95 | dB |
| Power Supply Rejection Ratio | PSRR | VS = ±6 V to ±18 V | 0.6 | 10 | 10 | µV/V |
| Output Swing | VO | RL = 2 kΩ | ±12 | ±13.7 | ±12 | V |
| Short-Circuit Current Limit | ISC | Output Shorted to Ground | +45/–15 | +45/–15 | +45/–15 | mA |
| Small-Signal Bandwidth (–3 dB) | BW | RL = 2 kΩ | 3 | 3 | 3 | MHz |
| Slew Rate | SR | RL = 2 kΩ | 6 | 9.5 | 6 | V/µs |
| Capacitive Load Drive Capability | CL | No Oscillation | 300 | 300 | 300 | pF |
| Supply Current | ISY | No Load | 2.5 | 3.5 | 2.5 | mA |
Key Features
- High Common-Mode Rejection (CMR): The AMP03 offers a typical CMR of 100 dB, ensuring high rejection of common-mode input voltages, which is crucial for instrumentation applications.
- Fast Settling Time and Slew Rate: With a settling time of 1 µs (0.01%) and a slew rate of 9.5 V/µs, the AMP03 is suitable for high-speed applications.
- Wide Bandwidth: The amplifier has a small-signal bandwidth of 3 MHz, making it appropriate for applications requiring high-frequency signal processing.
- Stable Operation Over Temperature: The matched thin-film resistor network ensures stable operation over a wide temperature range without the need for external matched components.
- Low Cost and High Performance: The AMP03 is a cost-effective alternative to other high-performance differential amplifiers, such as the INA105, while offering superior speed and performance.
Applications
- Summing Amplifiers: The AMP03 can be used to perform addition or subtraction of two signals without requiring expensive externally matched precision resistors.
- Instrumentation Amplifiers: Its high CMR and fast settling time make it ideal for instrumentation applications where precise signal processing is necessary.
- Balanced Line Receivers: The AMP03 can be used in balanced line receiver applications to reject common-mode noise.
- Current-Voltage Conversion and Absolute Value Amplifier: It is suitable for converting current to voltage and for absolute value amplifier applications.
- Precision Voltage Reference Applications and 4 to 20 mA Current Transmitters: The AMP03 can be used in various precision voltage reference and current transmitter applications due to its high accuracy and stability.
Q & A
- What is the typical common-mode rejection (CMR) of the AMP03?
The typical CMR of the AMP03 is 100 dB.
- What is the slew rate of the AMP03?
The slew rate of the AMP03 is typically 9.5 V/µs.
- What is the small-signal bandwidth of the AMP03?
The small-signal bandwidth of the AMP03 is 3 MHz.
- What is the settling time of the AMP03?
The settling time of the AMP03 is 1 µs (0.01%).
- What are some common applications of the AMP03?
The AMP03 is commonly used in summing amplifiers, instrumentation amplifiers, balanced line receivers, current-voltage conversion, absolute value amplifiers, precision voltage reference applications, and 4 to 20 mA current transmitters.
- How does the AMP03 compare to the INA105?
The AMP03 is a higher speed alternative to the INA105, offering superior performance in terms of bandwidth and slew rate.
- What is the input voltage range of the AMP03?
The input voltage range of the AMP03 is ±20 V.
- What is the output swing of the AMP03?
The output swing of the AMP03 is ±12 V to ±13.7 V with a 2 kΩ load.
- How much current does the AMP03 typically draw from the supply?
The supply current of the AMP03 is typically 3.5 mA with no load.
- What is the capacitive load drive capability of the AMP03?
The AMP03 can drive capacitive loads up to 300 pF without oscillation.
