Overview
The OPA2241UA is a dual, micro power operational amplifier produced by Texas Instruments. It is part of the OPAx241 family, which is optimized for operation at low power supply voltages. This amplifier is designed for battery-powered, portable applications and features very low power consumption, low offset voltage, rail-to-rail output swing, high common-mode rejection, and high open-loop gain. The OPA2241UA is available in an 8-pin SOIC (D) package and is fully specified from -40°C to +85°C, with operation possible from -55°C to +125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOIC (D) |
| Pins | 8 |
| Operating Temperature Range (°C) | -40 to 85 |
| Power Supply Type | Single (2.7V to 36V), Dual (±1.35V to ±18V) |
| Number of Channels per Chip | 2 |
| Quiescent Current (Iq) per Channel (Typical) | 25µA |
| Offset Voltage (Max) | ±250µV |
| Common-Mode Rejection Ratio (CMRR) (Typical) | 124dB |
| Open-Loop Gain (Typical) | 128dB |
| Gain Bandwidth Product (Typical) | 35kHz |
| Slew Rate (Typical) | 0.01V/µs |
| Output Current (Typical) | 30mA |
Key Features
- Micro power consumption: 25µA per channel
- Single-supply operation: 2.7V to 36V, and dual-supply operation: ±1.35V to ±18V
- Rail-to-rail output swing within 50mV
- Low offset voltage: ±250µV max
- High common-mode rejection ratio: 124dB
- High open-loop gain: 128dB
- Unity-gain stable and capable of driving large capacitive loads
- External trim pins for offset voltage adjustment (single versions only)
Applications
The OPA2241UA is particularly suited for battery-powered, portable applications due to its low power consumption and high performance characteristics. It is ideal for use in:
- Battery-powered devices and portable electronics
- Single-supply systems where negative supply voltages are not available
- High voltage and high current applications that benefit from single-supply operation
- Analog gain blocks and feedback circuits requiring stability and low noise
Q & A
- What is the typical quiescent current of the OPA2241UA?
The typical quiescent current of the OPA2241UA is 25µA per channel.
- What are the operating temperature ranges for the OPA2241UA?
The OPA2241UA is fully specified from -40°C to +85°C and can operate from -55°C to +125°C.
- What are the power supply voltage ranges for the OPA2241UA?
The OPA2241UA can operate on single supplies from 2.7V to 36V and on dual supplies from ±1.35V to ±18V.
- What is the common-mode rejection ratio (CMRR) of the OPA2241UA?
The CMRR of the OPA2241UA is typically 124dB.
- Is the OPA2241UA rail-to-rail?
The OPA2241UA has a rail-to-rail output swing within 50mV of the supply rails.
- What is the gain bandwidth product of the OPA2241UA?
The gain bandwidth product of the OPA2241UA is typically 35kHz.
- Can the OPA2241UA drive large capacitive loads?
Yes, the OPA2241UA is unity-gain stable and can drive large capacitive loads.
- Does the OPA2241UA have external trim pins for offset voltage adjustment?
Yes, external trim pins are provided for offset voltage adjustment, but only for single versions.
- What is the typical slew rate of the OPA2241UA?
The typical slew rate of the OPA2241UA is 0.01V/µs.
- What is the typical output current of the OPA2241UA?
The typical output current of the OPA2241UA is 30mA.
