Overview
The OPA353NA/3K, produced by Texas Instruments, is a high-speed, single-supply, rail-to-rail operational amplifier. It is part of the OPA353 series, which includes single, dual, and quad versions, all with identical specifications for design flexibility. These amplifiers are optimized for low voltage, single-supply operation and are designed for low-cost, miniature applications. They feature rail-to-rail input and output, low noise, and high-speed operation, making them ideal for a variety of applications including driving sampling analog-to-digital converters, cell phone PA control loops, video processing, and audio processing.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Input Offset Voltage (VOS) | VS = 5V | ±3 | ±8 | ±10 | mV |
| Power Supply Rejection Ratio (PSRR) | VS = 2.7V to 5.5V, VCM = 0V | 40 | 150 | - | µV/V |
| Input Impedance (Differential) | - | 1013 || 2.5 | - | - | Ω || pF |
| Open-Loop Voltage Gain (AOL) | RL = 10kΩ, 50mV < VO < (V+) – 50mV | 100 | 122 | - | dB |
| Gain-Bandwidth Product (GBW) | G = 1 | - | 44 | - | MHz |
| Slew Rate (SR) | G = 1 | - | 22 | - | V/µs |
| Output Current (IOUT) | - | ±40 | - | - | mA |
| Operating Voltage Range (VS) | - | 2.7 | - | 5.5 | V |
| Quiescent Current (IQ) | IO = 0 | 5.2 | - | 8 | mA |
| Specified Temperature Range | - | -40 | - | 85 | °C |
Key Features
- Rail-to-Rail Input and Output: The OPA353 series features rail-to-rail input and output, with the input common-mode voltage range extending 300mV beyond the supply rails and the output voltage swing reaching within 10mV of the supply rails with a 10kΩ load.
- High Speed Operation: The amplifiers have a wide bandwidth of 44MHz and a high slew rate of 22V/µs, making them suitable for high-speed applications.
- Low Noise: The OPA353 series has a low noise figure of 5nV/√Hz and a low total harmonic distortion plus noise (THD+NOISE) of 0.0006%.
- Unity-Gain Stable: These amplifiers are unity-gain stable, ensuring stability in various configurations.
- Miniature Packages: Available in single, dual, and quad versions with various package options such as SOT-23-5, MSOP-8, SO-8, and SSOP-16.
Applications
- Cell Phone PA Control Loops: Suitable for controlling the output power in cell phones due to their high speed and low noise characteristics.
- Driving A/D Converters: Optimized for driving sampling analog-to-digital converters, especially for medium to high-speed applications.
- Video Processing: Well-suited for video processing applications, including consumer video, with a 75Ω drive capability.
- Audio Processing: Excellent ac performance makes them ideal for audio applications, including general-purpose and professional audio systems.
- Data Acquisition and Process Control: Used in data acquisition and process control systems where high accuracy and stability are required.
- Communications and Active Filters: Suitable for communications and active filter applications due to their high bandwidth and low noise.
- Test Equipment: Used in various test equipment applications requiring high-speed and low-noise operational amplifiers.
Q & A
- What is the minimum operating voltage for the OPA353NA/3K?
The minimum operating voltage for the OPA353NA/3K is 2.5V.
- What is the gain-bandwidth product of the OPA353NA/3K?
The gain-bandwidth product (GBW) of the OPA353NA/3K is 44MHz.
- What is the slew rate of the OPA353NA/3K?
The slew rate (SR) of the OPA353NA/3K is 22V/µs.
- What is the input offset voltage range for the OPA353NA/3K?
The input offset voltage (VOS) range for the OPA353NA/3K is ±3mV to ±10mV.
- What are the typical applications of the OPA353NA/3K?
The OPA353NA/3K is typically used in cell phone PA control loops, driving A/D converters, video processing, audio processing, data acquisition, process control, communications, active filters, and test equipment.
- What is the quiescent current of the OPA353NA/3K?
The quiescent current (IQ) of the OPA353NA/3K is approximately 5.2mA to 8mA.
- What is the specified temperature range for the OPA353NA/3K?
The specified temperature range for the OPA353NA/3K is –40°C to +85°C.
- What package options are available for the OPA353 series?
The OPA353 series is available in SOT-23-5, MSOP-8, SO-8, and SSOP-16 packages.
- How does the OPA353NA/3K handle input voltages beyond the supply rails?
The OPA353NA/3K can handle input voltages up to 300mV beyond the supply rails, but large inputs can turn on the input protection diodes, requiring current limiting to 10mA.
- What is the output current capability of the OPA353NA/3K?
The output current (IOUT) capability of the OPA353NA/3K is ±40mA.
