Overview
The OPA4340EA/2K5G4 is a quad version of the OPA340 series of rail-to-rail CMOS operational amplifiers produced by Texas Instruments. These amplifiers are optimized for low-voltage, single-supply operation and are ideal for a wide range of general-purpose applications. They feature rail-to-rail input and output, high-speed operation, and excellent dynamic response, making them suitable for driving sampling analog-to-digital (A/D) converters, audio applications, and other high-performance needs.
The OPA4340 series operates on a single supply as low as 2.5 V with an input common-mode voltage range that extends 500 mV below ground and 500 mV above the positive supply. The output voltage swing is within 1 mV of the supply rails with a 100-kΩ load. These devices offer a wide bandwidth of 5.5 MHz and a high slew rate of 6 V/µs, yet they have a low quiescent current of 750 µA per channel.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Supply Voltage Range | 2.5 | 5.5 | V | |
| Quiescent Current (per amplifier) | 750 | 950 | µA | |
| Bandwidth | 5.5 | MHz | ||
| Slew Rate | 6 | V/µs | ||
| Input Offset Voltage | ±2 | ±8 | mV | |
| Input Bias Current | ±0.2 | ±10 | pA | |
| Operating Temperature Range | –40 | 85 | °C | |
| Storage Temperature Range | –55 | 125 | °C |
Key Features
- Rail-to-Rail Input and Output: Extends 500 mV beyond the supply rails, providing a wide dynamic range especially in low-supply applications.
- High-Speed Operation: 5.5 MHz bandwidth and 6 V/µs slew rate for excellent dynamic response.
- Low Quiescent Current: Only 750 µA per channel, making it power-efficient.
- Single, Dual, and Quad Versions: Available in various packages for design flexibility, including SOT-23, SOIC, PDIP, VSSOP, and SSOP.
- Low THD + Noise: 0.0007% at 1 kHz, suitable for high-fidelity audio applications.
- Completely Independent Circuitry: In dual and quad versions, ensuring lowest crosstalk and freedom from interaction.
Applications
- Driving A/D Converters: Ideal for driving sampling analog-to-digital converters due to their rail-to-rail input and output.
- PCMCIA Cards: Suitable for use in PCMCIA card applications.
- Data Acquisition: Used in data acquisition systems for precise signal processing.
- Process Control: Employed in process control systems for accurate signal amplification.
- Audio Processing: Well-suited for audio applications due to their excellent AC performance and low THD + noise.
- Communications: Used in various communication systems requiring high-speed and low-noise amplification.
- Active Filters: Ideal for active filter designs requiring high bandwidth and low distortion.
- Test Equipment: Utilized in test equipment for precise signal measurement and amplification.
Q & A
- What is the minimum supply voltage for the OPA4340EA/2K5G4?
The minimum supply voltage is 2.5 V.
- What is the bandwidth of the OPA4340EA/2K5G4?
The bandwidth is 5.5 MHz.
- What is the slew rate of the OPA4340EA/2K5G4?
The slew rate is 6 V/µs.
- What is the quiescent current per channel for the OPA4340EA/2K5G4?
The quiescent current per channel is 750 µA.
- What are the typical applications of the OPA4340EA/2K5G4?
Typical applications include driving A/D converters, data acquisition, process control, audio processing, communications, active filters, and test equipment.
- What are the available package types for the OPA4340EA/2K5G4?
The available packages include SSOP-16 and SO-14 surface mount.
- What is the operating temperature range for the OPA4340EA/2K5G4?
The operating temperature range is from –40°C to 85°C.
- What is the storage temperature range for the OPA4340EA/2K5G4?
The storage temperature range is from –55°C to 125°C.
- How does the rail-to-rail input and output feature benefit the OPA4340EA/2K5G4?
The rail-to-rail input and output feature extends the dynamic range, especially in low-supply applications, and allows the output voltage to swing within 1 mV of the supply rails.
- Why is the OPA4340EA/2K5G4 suitable for audio applications?
The OPA4340EA/2K5G4 is suitable for audio applications due to its excellent AC performance and low THD + noise.
