Overview
The OPA244NA/250, produced by Texas Instruments, is a single-channel operational amplifier (op amp) designed for low quiescent current and high performance. This device is part of the OPA244 series, which includes the OPA2244 (dual) and OPA4244 (quad) versions. The OPA244NA/250 is ideal for battery-powered and portable instrumentation due to its low power consumption and compact packaging.
It operates from a single supply voltage ranging from 2.2V to 36V or dual supplies from ±1.1V to ±18V, making it versatile for various applications. The amplifier is stable in unity gain and maintains excellent performance across its specified limits.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Input Offset Voltage (VOS) | VS = ±7.5V, VCM = 0 | ±0.7 | ±1.5 | ±2 | mV |
| dVOS/dT | TA = –40°C to 85°C | ±4 | µV/°C | ||
| Power Supply Rejection Ratio (PSRR) | VS = +2.6V to +36V | 5 | 50 | 50 | µV/V |
| Input Bias Current (IB) | VCM = VS/2 | –10 | –25 | nA | |
| Input Offset Current (IOS) | VCM = VS/2 | ±1 | ±10 | nA | |
| Bandwidth | 430kHz | ||||
| Supply Voltage Range | 2.2V to 36V (Single), ±1.1V to ±18V (Dual) | V | |||
| Operating Temperature Range | –40°C to 85°C | °C | |||
| Quiescent Current per Channel | 50µA | µA |
Key Features
- MicroPOWER: Low quiescent current of 50µA per channel.
- Single Supply Operation: Compatible with single supply voltages from 2.2V to 36V and dual supplies from ±1.1V to ±18V.
- Wide Bandwidth: Achieves a bandwidth of 430kHz.
- Unity Gain Stable: Stable in unity gain configurations.
- MicroSIZE Packages: Available in compact SOT-23-5, MSOP-8, and SO-8 packages.
- High Channel Separation: Ensures minimal crosstalk with channel separation of 140dB.
- Full Temperature Range: Specified from –40°C to 85°C and operates from –55°C to 125°C.
Applications
The OPA244NA/250 is suitable for a wide range of general-purpose applications, particularly in battery-powered and portable instrumentation. It is ideal for use in:
- Battery-powered devices due to its low quiescent current.
- Portable instrumentation where space and power efficiency are critical.
- Single supply systems where the input common-mode voltage range includes ground.
- Applications requiring high channel separation and minimal crosstalk.
Q & A
- What is the quiescent current per channel of the OPA244NA/250?
The quiescent current per channel is 50µA.
- What is the operating supply voltage range for the OPA244NA/250?
The device can operate from a single supply voltage of 2.2V to 36V or dual supplies from ±1.1V to ±18V.
- What is the bandwidth of the OPA244NA/250?
The bandwidth is 430kHz.
- Is the OPA244NA/250 stable in unity gain configurations?
- What are the available package options for the OPA244NA/250?
The OPA244NA/250 is available in SOT-23-5, SO-8, and 8-pin DIP packages.
- What is the operating temperature range for the OPA244NA/250?
The device is specified to operate from –40°C to 85°C and can function from –55°C to 125°C.
- How much input bias current does the OPA244NA/250 have?
The input bias current is typically –25nA.
- What is the input offset voltage of the OPA244NA/250?
The input offset voltage is typically ±1.5mV.
- Is the OPA244NA/250 suitable for single supply applications?
- What is the channel separation of the OPA244NA/250?
The channel separation is 140dB.
