Overview
The OPA4137UA/2K5 is a high-performance, general-purpose operational amplifier (op-amp) designed and manufactured by Texas Instruments. This device is part of the OPAx137 series, known for its low cost, miniature design, and excellent performance characteristics. The OPA4137UA/2K5 is available in a 14-pin SOIC package and is suitable for a wide range of applications requiring low input bias current, low quiescent current, and high open-loop gain.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Input Offset Voltage (VOS) | TA = –40°C to +85°C | ±1.5 | ±3 | ±2.5 | mV |
| Input Bias Current (IB) | 5 | pA | |||
| Quiescent Current (IQ) | 220 | µA/channel | |||
| Gain-Bandwidth Product (GBW) | 1 | MHz | |||
| Slew Rate (SR) | G = 1 | 3.5 | V/µs | ||
| Supply Voltage Range | ±2.25V to ±18V, +4.5V to +36V | V | |||
| Operating Temperature Range | –40°C to +85°C | °C | |||
| Package Type | 14-SOIC |
Key Features
- FET Input: Low input bias current of 5 pA.
- Low Offset Voltage: Input offset voltage as low as ±1.5 mV.
- Wide Supply Range: Operates on power supplies ranging from ±2.25V to ±18V (or +4.5V to +36V single supply).
- Low Quiescent Current: Quiescent current of 220 µA per channel.
- High Open-Loop Gain: Open-loop voltage gain of 94 dB.
- High Speed/Power Ratio: Gain-bandwidth product of 1 MHz and slew rate of 3.5 V/µs.
- MicroSIZE Packages: Available in SOT-23-5, MSOP-8, and other compact packages.
- Single, Dual, and Quad Configurations: Available in single, dual, and quad channel configurations.
Applications
The OPA4137UA/2K5 is suitable for a wide range of general-purpose applications. It is particularly useful in scenarios requiring low input bias current, low quiescent current, and high open-loop gain. These applications include but are not limited to:
- Audio and video processing
- Medical equipment
- Industrial control systems
- Measurement and instrumentation
- Automotive electronics
Power supply pins should be bypassed with 10nF ceramic capacitors or larger to ensure stable operation. The device is unity-gain stable and can operate with one amplifier in a package being overdriven or short-circuited without affecting the performance of the other channels.
Q & A
- What is the input bias current of the OPA4137UA/2K5?
The input bias current is 5 pA.
- What is the typical quiescent current per channel for the OPA4137UA/2K5?
The typical quiescent current per channel is 220 µA.
- What is the gain-bandwidth product of the OPA4137UA/2K5?
The gain-bandwidth product is 1 MHz.
- What is the slew rate of the OPA4137UA/2K5?
The slew rate is 3.5 V/µs.
- What is the operating temperature range of the OPA4137UA/2K5?
The operating temperature range is –40°C to +85°C.
- What are the available package types for the OPA4137UA/2K5?
The device is available in a 14-SOIC package among others.
- Can the OPA4137UA/2K5 operate on single or dual power supplies?
Yes, it can operate on both single (+4.5V to +36V) and dual (±2.25V to ±18V) power supplies.
- How should the power supply pins be bypassed for stable operation?
The power supply pins should be bypassed with 10nF ceramic capacitors or larger.
- Is the OPA4137UA/2K5 unity-gain stable?
Yes, the device is unity-gain stable.
- Can one channel being overdriven or short-circuited affect the performance of other channels in a quad package?
No, the channels are completely independent, ensuring normal performance even if one channel is overdriven or short-circuited.
