Overview
The OPA4350UA/2K5G4, part of the OPA350 series from Texas Instruments, is a high-speed, single-supply, rail-to-rail operational amplifier. This CMOS operational amplifier is optimized for low voltage, single-supply operation and is available in single, dual, and quad configurations. The OPA4350UA/2K5G4 is particularly suited for applications requiring high speed, low noise, and rail-to-rail input and output capabilities.
Key Specifications
| Parameter | Test Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| Operating Voltage Range | TA = −40°C to 85°C | 2.7 | — | 5.5 | V |
| Minimum Operating Voltage | — | 2.5 | — | — | V |
| Quiescent Current (per amplifier) | TA = −40°C to 85°C, IO = 0 | — | 5.2 | 7.5 | mA |
| Input Offset Voltage | VS = 5 V, TA = −40°C to 85°C | ±150 | ±500 | ±1 mV | µV |
| Input Bias Current | — | ±0.5 | ±10 | — | pA |
| Bandwidth | — | — | 38 | — | MHz |
| Slew Rate | — | — | 22 | — | V/µs |
| Noise Voltage | — | — | 5 | — | nV/√Hz |
| Total Harmonic Distortion + Noise | RL = 600 Ω, VO = 2.5 VPP, G = 1, f = 1 kHz | — | 0.0006% | — | % |
| Output Voltage Swing from Rail | RL = 10 kΩ, AOL ≥100 dB, TA = −40°C to 85°C | 10 | — | 50 | mV |
| Output Current | RL = 1 kΩ, AOL ≥100 dB, TA = −40°C to 85°C | 25 | — | 200 | mA |
| Operating Temperature Range | — | −40 | — | 85 | °C |
Key Features
- Rail-to-Rail Input and Output: The OPA4350UA/2K5G4 features rail-to-rail input and output capabilities, extending the input common-mode voltage range 300 mV below ground and 300 mV above the positive supply, and output voltage swing to within 10 mV of the supply rails.
- High Speed Operation: With a bandwidth of 38 MHz and a slew rate of 22 V/μs, this amplifier is ideal for high-speed applications.
- Low Noise: The amplifier has a low noise voltage of 5 nV/√Hz, making it suitable for noise-sensitive applications.
- Low Total Harmonic Distortion + Noise: A THD+Noise of 0.0006% ensures high fidelity in audio and other applications.
- Unity-Gain Stable: The OPA4350UA/2K5G4 is stable in unity-gain configurations.
- MicroSize Packages: Available in space-saving SSOP-16 and SO-14 surface mount packages.
- Single, Dual, and Quad Versions: Identical specifications across single, dual, and quad versions for maximum design flexibility.
Applications
- Driving A/D Converters: Optimized for driving medium speed (up to 500 kHz) sampling Analog-to-Digital (A/D) converters.
- Cell Phone PA Control Loops: Suitable for controlling output power in cell phones.
- Video Processing: Ideal for video processing applications with 75-Ω drive capability.
- Data Acquisition: Used in data acquisition systems due to its high speed and low noise characteristics.
- Process Control: Applicable in process control systems requiring precise and stable amplification.
- Audio Processing: Excellent AC performance makes it suitable for audio applications.
- Communications: Used in various communication systems.
- Active Filters: Suitable for active filter designs.
- Test Equipment: Used in test and measurement equipment.
Q & A
- What is the operating voltage range of the OPA4350UA/2K5G4?
The operating voltage range is from 2.7 V to 5.5 V, with a minimum operating voltage of 2.5 V.
- What is the bandwidth of the OPA4350UA/2K5G4?
The bandwidth is 38 MHz.
- What is the slew rate of the OPA4350UA/2K5G4?
The slew rate is 22 V/μs.
- What is the noise voltage of the OPA4350UA/2K5G4?
The noise voltage is 5 nV/√Hz.
- What is the total harmonic distortion + noise of the OPA4350UA/2K5G4?
The total harmonic distortion + noise is 0.0006%.
- Is the OPA4350UA/2K5G4 unity-gain stable?
Yes, the OPA4350UA/2K5G4 is unity-gain stable.
- What are the package options for the OPA4350UA/2K5G4?
The OPA4350UA/2K5G4 is available in SSOP-16 and SO-14 surface mount packages.
- What are some common applications of the OPA4350UA/2K5G4?
Common applications include driving A/D converters, cell phone PA control loops, video processing, data acquisition, process control, audio processing, communications, active filters, and test equipment.
- What is the operating temperature range of the OPA4350UA/2K5G4?
The specified operating temperature range is from −40°C to 85°C, with an extended operating range from −55°C to 150°C.
- How does the OPA4350UA/2K5G4 handle capacitive loads?
The OPA4350UA/2K5G4 can drive a wide range of capacitive loads, but stability depends on the amplifier configuration, gain, and load value.
