Overview
The OPA234UA-BB is a low-power, precision operational amplifier produced by Burr-Brown, a division of Texas Instruments. This device is part of the OPA234 series, which includes single, dual, and quad versions, offering design flexibility. The OPA234UA-BB is particularly noted for its rail-to-rail input and output capabilities, making it suitable for a wide range of applications, including general-purpose and audio circuits, as well as driving sampling Analog-to-Digital Converters (ADCs) and providing I/V conversion at the output of Digital-to-Analog Converters (DACs).
Key Specifications
| Parameter | Condition | Min | Max | Units | |
|---|---|---|---|---|---|
| Input Offset Voltage (VOS) | VCM = VS/2 | ±1 | ±6 | mV | |
| Input Offset Voltage vs Temperature (dVOS/dT) | ±3 | µV/°C | |||
| Power Supply Rejection Ratio (PSRR) | VS = 2.7V to 5.5V, VCM < (V+) -1.8V | 30 | 200 | µV/V | |
| Input Bias Current (IB) | ±0.2 | ±10 | pA | ||
| Common-Mode Rejection Ratio (CMRR) | VS = +2.7V, –0.3V < VCM < 3V | 62 | 74 | dB | |
| Open-Loop Voltage Gain (AOL) | RL = 100kΩ, 10mV < VO < (V+) – 10mV | 104 | 124 | dB | |
| Gain-Bandwidth Product (GBW) | G = 1 | 1 | MHz | ||
| Slew Rate (SR) | 1 | V/µs | |||
| Quiescent Current (IQ) | IO = 0A | 150 | 250 | µA | |
| Operating Temperature Range | –40 | +85 | °C | ||
| Storage Temperature Range | –65 | +150 | °C |
Key Features
- Rail-to-Rail Input and Output: The OPA234UA-BB features rail-to-rail input and output capabilities, allowing it to operate effectively across the entire supply voltage range.
- Low Power Consumption: With a quiescent current of only 250µA per amplifier, this device is suitable for low-power applications.
- High-Speed Operation: It has a gain-bandwidth product of 1 MHz and a slew rate of 1 V/µs, making it ideal for high-speed applications.
- High Accuracy: The device offers low input offset voltage and high common-mode rejection ratio, ensuring high accuracy in various applications.
- Multiple Package Options: Available in various packages such as SOIC-8, MSOP-8, and others, providing flexibility in design and implementation.
Applications
- General-Purpose Amplification: Suitable for a wide range of general-purpose applications due to its high accuracy and low power consumption.
- Audio Circuits: Ideal for audio applications requiring low noise and high fidelity.
- Analog-to-Digital Converters (ADCs): Can be used to drive sampling ADCs due to its high-speed operation and rail-to-rail output.
- Digital-to-Analog Converters (DACs): Provides I/V conversion at the output of DACs.
- Industrial and Medical Devices: Its robust specifications make it suitable for use in industrial and medical devices where reliability and accuracy are crucial.
Q & A
- What is the input offset voltage of the OPA234UA-BB?
The input offset voltage (VOS) of the OPA234UA-BB is typically ±6 mV with a maximum of ±1 mV over the temperature range of –40°C to +85°C.
- What is the power supply rejection ratio (PSRR) of this device?
The PSRR of the OPA234UA-BB is 30 µV/V to 200 µV/V over the supply voltage range of 2.7V to 5.5V.
- What is the quiescent current of the OPA234UA-BB?
The quiescent current (IQ) is 150 µA to 250 µA per amplifier.
- What is the gain-bandwidth product (GBW) of this op-amp?
The GBW of the OPA234UA-BB is 1 MHz.
- What is the slew rate of the OPA234UA-BB?
The slew rate (SR) is 1 V/µs.
- What are the operating and storage temperature ranges for this device?
The operating temperature range is –40°C to +85°C, and the storage temperature range is –65°C to +150°C.
- What are the typical applications of the OPA234UA-BB?
Typical applications include general-purpose amplification, audio circuits, driving ADCs, and providing I/V conversion for DACs).
- What package options are available for the OPA234UA-BB?
The device is available in several packages, including SOIC-8, MSOP-8, and others).
- Is the OPA234UA-BB RoHS compliant?
Yes, the OPA234UA-BB is RoHS compliant).
- What is the maximum junction temperature for this device?
The maximum junction temperature is 150°C).
