Overview
The OPA2340UA is a dual, single-supply, rail-to-rail operational amplifier produced by Texas Instruments. It is part of the OPA340 series, which is optimized for low-voltage, single-supply operation. The device features rail-to-rail input and output, making it ideal for various applications including driving sampling analog-to-digital (A/D) converters, general-purpose use, and audio applications. It also provides I/V conversion at the output of digital-to-analog (D/A) converters.
The OPA2340UA operates on a single supply as low as 2.5 V and has an input common-mode voltage range that extends 500 mV below ground and 500 mV above the positive supply. The output voltage swing is to within 1 mV of the supply rails with a 100-kΩ load.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (D) | - |
| Pins | 8 | - |
| Operating Temperature Range | -40 to 85 | °C |
| Supply Voltage Range | 2.5 to 5.5 | V |
| Bandwidth | 5.5 | MHz |
| Slew Rate | 6 | V/µs |
| Quiescent Current per Channel | 750 | µA |
| Input Offset Voltage | ±150 to ±500 | µV |
| Input Bias Current | ±0.2 to ±10 | pA |
| Total Harmonic Distortion + Noise | 0.0007% (f = 1 kHz) | % |
Key Features
- Rail-to-Rail Input and Output: The OPA2340UA features rail-to-rail input and output, allowing for operation close to the supply rails.
- Micro Size Packages: Available in miniature packages such as 8-pin SOIC, VSSOP, and PDIP.
- Wide Bandwidth and High Slew Rate: Offers a bandwidth of 5.5 MHz and a slew rate of 6 V/µs, ensuring high-speed operation.
- Low THD + Noise: Total harmonic distortion plus noise is as low as 0.0007% at 1 kHz.
- Low Quiescent Current: Each channel has a quiescent current of only 750 µA.
- Single, Dual, and Quad Versions: Available in single (OPA340), dual (OPA2340), and quad (OPA4340) versions with identical specifications for design flexibility.
Applications
- Driving Sampling Analog-to-Digital (A/D) Converters: Ideal for applications requiring high-speed and low distortion.
- General Purpose and Audio Applications: Suitable for a wide range of general-purpose and audio applications due to its rail-to-rail input and output capabilities.
- I/V Conversion at D/A Converter Outputs: Provides accurate current-to-voltage conversion at the output of digital-to-analog converters.
Q & A
- What is the operating temperature range of the OPA2340UA?
The operating temperature range is -40°C to 85°C.
- What are the package options for the OPA2340UA?
The OPA2340UA is available in 8-pin SOIC, VSSOP, and PDIP packages.
- What is the minimum supply voltage for the OPA2340UA?
The minimum supply voltage is 2.5 V.
- What is the bandwidth of the OPA2340UA?
The bandwidth is 5.5 MHz).
- What is the slew rate of the OPA2340UA?
The slew rate is 6 V/µs).
- What is the quiescent current per channel for the OPA2340UA?
The quiescent current per channel is 750 µA).
- What is the total harmonic distortion plus noise of the OPA2340UA at 1 kHz?
The total harmonic distortion plus noise is 0.0007% at 1 kHz).
- Is the OPA2340UA suitable for audio applications?
Yes, it is well-suited for audio applications due to its rail-to-rail input and output capabilities and low distortion).
- Can the OPA2340UA be used for driving sampling A/D converters?
Yes, it is ideal for driving sampling analog-to-digital converters due to its high-speed operation and low distortion).
- Are SPICE macromodels available for the OPA2340UA?
Yes, SPICE macromodels are available for design analysis).
