Overview
The OPA234UA is a low-power, precision operational amplifier produced by Texas Instruments, which acquired National Semiconductor. This device is part of the OPA234 series, designed for single-supply, low-voltage, and low-power applications. It is ideal for use in portable and battery-powered devices due to its low quiescent current and high accuracy.
Key Specifications
| Parameter | Value |
|---|---|
| Amplifier Type | General Purpose |
| Input Offset Voltage (Vos) | ±100 µV (typ), ±250 µV (max) |
| Input Bias Current | -15 nA to -50 nA (max) |
| Common Mode Rejection Ratio (CMRR) | 70 dB to 100 dB |
| Power Supply Rejection Ratio (PSRR) | 3 µV/V to 20 µV/V |
| Gain Bandwidth Product | 1 MHz |
| Slew Rate | Not specified for OPA234UA, but generally around 1 V/µs for similar op-amps |
| Supply Voltage Range | +2.7V to +30V (single supply), ±1.35V to ±15V (dual supply) |
| Operating Temperature Range | -40°C to 85°C |
| Quiescent Current | 250 µA per amplifier |
| Package Type | SOIC D (8-pin) |
Key Features
- Low quiescent current: 250 µA per amplifier, making it suitable for battery-powered devices.
- Low input bias current: Maximum of 50 nA.
- Low input offset voltage: ±100 µV (typ), ±250 µV (max).
- High common-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR): Ensures high accuracy and stability.
- Wide supply voltage range: Operates from single or dual supplies, +2.7V to +30V (single supply), ±1.35V to ±15V (dual supply).
- Available in single, dual, and quad versions: Provides flexibility in design.
- High gain bandwidth product: 1 MHz.
Applications
- Portable and battery-powered devices: Due to its low power consumption and high accuracy.
- Single-supply and low-voltage applications: Ideal for systems operating on a single power supply.
- Audio and signal processing: Suitable for audio circuits and signal conditioning due to its low noise and high CMRR.
- Medical devices: Where low power and high accuracy are critical.
- Industrial control systems: For precise signal amplification and conditioning.
Q & A
- What is the typical input offset voltage of the OPA234UA?
The typical input offset voltage is ±100 µV, with a maximum of ±250 µV.
- What is the quiescent current of the OPA234UA?
The quiescent current is 250 µA per amplifier.
- What is the common-mode rejection ratio (CMRR) of the OPA234UA?
The CMRR is typically around 70 dB to 100 dB.
- What is the power supply rejection ratio (PSRR) of the OPA234UA?
The PSRR is typically between 3 µV/V to 20 µV/V.
- What are the available package types for the OPA234UA?
The OPA234UA is available in an 8-pin SOIC D package.
- What is the operating temperature range of the OPA234UA?
The operating temperature range is -40°C to 85°C.
- Can the OPA234UA operate on a single or dual power supply?
Yes, it can operate on either a single supply (+2.7V to +30V) or a dual supply (±1.35V to ±15V).
- What are some typical applications of the OPA234UA?
Typical applications include portable and battery-powered devices, single-supply and low-voltage systems, audio and signal processing, medical devices, and industrial control systems.
- Is the OPA234UA RoHS compliant?
Yes, the OPA234UA is RoHS compliant.
- Where can I find the datasheet for the OPA234UA?
The datasheet can be found on the Texas Instruments website or through other electronic component databases like Alldatasheet.com.
