Overview
The OP275GPZ, produced by Analog Devices Inc., is a dual bipolar/JFET audio operational amplifier. It is the first amplifier to feature the Butler Amplifier front end, which combines the accuracy and low noise performance of bipolar transistors with the speed and sound quality of JFETs. This unique design allows the OP275 to achieve low noise and high speed while using less than 5 mA of supply current, making it an efficient choice for various audio applications.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| AUDIO PERFORMANCE - THD + Noise | - | VIN = 3 V rms, RL = 2 kΩ, f = 1 kHz | - | - | 0.006% | % |
| Voltage Noise Density | en | f = 30 Hz | - | - | 7 nV/√Hz | nV/√Hz |
| Voltage Noise Density | en | f = 1 kHz | - | - | 6 nV/√Hz | nV/√Hz |
| Current Noise Density | in | f = 1 kHz | - | - | 1.5 pA/√Hz | pA/√Hz |
| Input Offset Voltage | VOS | -40°C ≤ TA ≤ +85°C | 1 mV | - | 1.25 mV | mV |
| Input Bias Current | IB | VCM = 0 V | 100 nA | 350 nA | - | nA |
| Power Supply Rejection Ratio | PSRR | VS = ±4.5 V to ±18 V | 85 dB | - | 111 dB | dB |
| Supply Current | ISY | VS = ±4.5 V to ±18 V, VO = 0 V, RL = ∞, –40°C ≤ TA ≤ +85°C | 4 mA | - | 5 mA | mA |
| Supply Voltage Range | VS | - | ±4.5 V | - | ±22 V | V |
| Slew Rate | SR | RL = 2 kΩ | 15 V/μs | - | 22 V/μs | V/μs |
| Gain Bandwidth Product | GBP | - | - | - | 9 MHz | MHz |
| Phase Margin | Øm | - | - | - | 62 Degrees | Degrees |
Key Features
- Butler Amplifier Front End: Combines bipolar and JFET transistors for high accuracy, low noise, and high speed.
- Low Noise: Voltage noise density of 6 nV/√Hz at 1 kHz.
- Low Distortion: Total Harmonic Distortion plus Noise (THD + Noise) of 0.0006% at 3 V rms.
- High Slew Rate: Up to 22 V/μs, ensuring low distortion even with large output swings.
- Wide Bandwidth: Gain Bandwidth Product of 9 MHz.
- Low Supply Current: Less than 5 mA, making it power-efficient.
- Low Offset Voltage: Guaranteed at 1 mV and typically less than 200 μV.
- Unity Gain Stable: Suitable for a variety of applications without additional compensation.
- Extended Temperature Range: Specified over –40°C to +85°C.
- Package Options: Available in 8-Pin Plastic DIP and SOIC-8 packages.
Applications
- Audio Equipment: Ideal for professional audio gear, home audio systems, and audio processing equipment due to its excellent sonic characteristics.
- Instrumentation: Suitable for precision measurement and instrumentation applications requiring low noise and high accuracy.
- Medical Devices: Can be used in medical equipment where low noise and high fidelity are crucial.
- Industrial Control Systems: Applicable in control systems that require high precision and low distortion.
Q & A
- What is the unique feature of the OP275GPZ amplifier?
The OP275GPZ features a Butler Amplifier front end, combining bipolar and JFET transistors for high accuracy, low noise, and high speed.
- What is the typical voltage noise density of the OP275GPZ?
The voltage noise density is typically 6 nV/√Hz at 1 kHz.
- What is the Total Harmonic Distortion plus Noise (THD + Noise) of the OP275GPZ?
The THD + Noise is 0.0006% at 3 V rms.
- What is the slew rate of the OP275GPZ?
The slew rate is up to 22 V/μs.
- What is the gain bandwidth product of the OP275GPZ?
The gain bandwidth product is 9 MHz.
- How much supply current does the OP275GPZ typically consume?
The supply current is typically less than 5 mA.
- What is the input offset voltage of the OP275GPZ?
The input offset voltage is guaranteed at 1 mV and typically less than 200 μV.
- Is the OP275GPZ unity gain stable?
Yes, the OP275GPZ is unity gain stable.
- What are the available package options for the OP275GPZ?
The OP275GPZ is available in 8-Pin Plastic DIP and SOIC-8 packages.
- What is the operating temperature range of the OP275GPZ?
The OP275GPZ is specified over the extended industrial temperature range of –40°C to +85°C.
