Overview
The OPA4234UA/2K5 is a quad, single-supply, rail-to-rail operational amplifier produced by Texas Instruments. This device is part of the OPA234 series, which is optimized for low-voltage, low-power applications. The OPA4234UA/2K5 is particularly suited for demanding applications due to its high-speed operation, low quiescent current, and excellent dynamic response.
The device operates on a single supply as low as 2.7V and can handle a wide supply range up to 36V. It features rail-to-rail input and output, making it ideal for driving sampling analog-to-digital (A/D) converters and providing I/V conversion at the output of digital-to-analog (D/A) converters.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Input Offset Voltage (VOS) | VCM = 2.5V | ±40 | ±100 | ±250 | µV |
| Input Bias Current (IB) | VCM = 2.5V | -15 | -30 | -50 | nA |
| Common-Mode Voltage Range | -0.1 (V+) | V | |||
| Open-Loop Voltage Gain (AOL) | RL = 10kΩ | 108 | 120 | 100 | dB |
| Gain-Bandwidth Product (GBW) | CL = 100pF | 5.5 | MHz | ||
| Slew Rate (SR) | 6 | V/µs | |||
| Quiescent Current (IQ) | IO = 0 | 250 | 300 | µA | |
| Operating Temperature Range | -40 | 85 | °C | ||
| Storage Temperature Range | -55 | 125 | °C |
Key Features
- Rail-to-Rail Input and Output: The OPA4234UA/2K5 features rail-to-rail input and output, allowing the input common-mode voltage range to extend below ground and the output voltage swing to be within 1 mV of the supply rails.
- Low Power Consumption: The device has a low quiescent current of 250 µA to 300 µA per amplifier, making it suitable for low-power applications.
- High-Speed Operation: With a bandwidth of 5.5 MHz and a slew rate of 6 V/µs, the OPA4234UA/2K5 offers excellent dynamic response.
- Low THD + Noise: The device has a low total harmonic distortion plus noise (THD + Noise) of 0.0007% at 1 kHz.
- Independent Circuitry: Dual and quad designs feature completely independent circuitry, ensuring lowest crosstalk and freedom from interaction between channels.
- Wide Supply Range: The OPA4234UA/2K5 can operate on a single supply from 2.7V to 36V or dual supplies from ±1.35V to ±18V.
Applications
- General Purpose Amplification: Suitable for various general-purpose amplification tasks due to its high-speed operation and low power consumption.
- Audio Applications: Ideal for audio circuits requiring low noise and high fidelity.
- Analog-to-Digital (A/D) and Digital-to-Analog (D/A) Converters: The rail-to-rail input and output make it ideal for driving sampling A/D converters and providing I/V conversion at the output of D/A converters.
- High Load Capacitance Applications: Excellent phase margin and capacitive load drive capability make it suitable for applications with high load capacitance.
Q & A
- What is the operating temperature range of the OPA4234UA/2K5?
The specified operating temperature range is from -40°C to 85°C, with an extended operating range from -40°C to 125°C and storage range from -55°C to 125°C.
- What is the typical quiescent current per amplifier for the OPA4234UA/2K5?
The typical quiescent current per amplifier is 300 µA.
- What is the gain-bandwidth product (GBW) of the OPA4234UA/2K5?
The gain-bandwidth product is 5.5 MHz with a load capacitance of 100 pF.
- What is the slew rate of the OPA4234UA/2K5?
The slew rate is 6 V/µs.
- Can the OPA4234UA/2K5 operate on a dual supply?
- What is the common-mode voltage range of the OPA4234UA/2K5?
The common-mode voltage range extends 500 mV below ground and 500 mV above the positive supply.
- How many channels does the OPA4234UA/2K5 have?
The OPA4234UA/2K5 is a quad operational amplifier, meaning it has four independent channels.
- What is the typical input offset voltage of the OPA4234UA/2K5?
The typical input offset voltage is ±100 µV.
- Can the OPA4234UA/2K5 drive high capacitive loads?
- What is the short-circuit current of the OPA4234UA/2K5?
The short-circuit current is ±22 mA.
