Overview
The OPA348AIDBVT is a single-supply, low-power, CMOS operational amplifier from Texas Instruments. It is part of the OPAx348 series, which includes the OPA348, OPA2348, and OPA4348 models, differing primarily in the number of channels. The OPA348AIDBVT is a single-channel version, making it suitable for a wide range of general-purpose applications. This amplifier features a 1-MHz unity-gain bandwidth and a low supply current of 45 µA, making it ideal for low-power, single-supply applications.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Supply Voltage Range | 2.1 V to 5.5 V | V |
| Quiescent Current (per amplifier) | 45 µA | µA |
| Input Bias Current | 0.5 pA | pA |
| Input Offset Voltage | 5 mV | mV |
| Common-Mode Voltage Range | (V–) – 0.2 V to (V+) + 0.2 V | V |
| Bandwidth (Unity-Gain) | 1 MHz | MHz |
| Settling Time (0.1%) | 5 µs | µs |
| Total Harmonic Distortion + Noise | 0.0023% (at 1 kHz, G = +1) | % |
| Package Options | 5-Pin SC70, 8-Pin SOT-23, 14-Pin TSSOP |
Key Features
- Rail-to-Rail Input and Output: Extends the dynamic range by allowing the input and output voltages to swing within 200 mV of the supply rails.
- Low Power Consumption: With a quiescent current of 45 µA, it is highly suitable for battery-powered and low-power applications.
- High Bandwidth: Features a 1-MHz unity-gain bandwidth, making it suitable for a variety of high-frequency applications.
- Micro Size Packages: Available in compact packages such as 5-Pin SC70, 8-Pin SOT-23, and 14-Pin TSSOP, ideal for space-limited designs.
- Excellent Bandwidth-to-Power Consumption Trade-off: Offers a balance between high bandwidth and low power consumption, making it efficient for various applications.
Applications
- Portable Equipment: Ideal for handheld devices and other portable electronics due to its low power consumption.
- Battery-Powered Equipment: Suitable for devices that require long battery life.
- Smoke Alarms and CO Detectors: Used in safety devices where low power and reliability are crucial.
- Medical Instrumentation: Applicable in medical devices that require precise and low-power signal processing.
- Driving A/D Converters: Optimized for driving medium-speed sampling analog-to-digital converters (ADCs), providing signal gain and buffering the ADC input capacitance.
Q & A
- What is the typical supply current of the OPA348AIDBVT?
The typical supply current is 45 µA.
- What is the input bias current of the OPA348AIDBVT?
The input bias current is 0.5 pA.
- What is the bandwidth of the OPA348AIDBVT at unity gain?
The bandwidth at unity gain is 1 MHz.
- What are the package options available for the OPA348AIDBVT?
The package options include 5-Pin SC70, 8-Pin SOT-23, and 14-Pin TSSOP.
- What is the common-mode voltage range of the OPA348AIDBVT?
The common-mode voltage range extends 200 mV beyond the supply rails.
- Is the OPA348AIDBVT suitable for driving A/D converters?
Yes, it is optimized for driving medium-speed sampling analog-to-digital converters (ADCs).
- What is the total harmonic distortion + noise (THD+N) of the OPA348AIDBVT?
The THD+N is 0.0023% at 1 kHz with a gain of +1.
- What are some typical applications of the OPA348AIDBVT?
It is used in portable equipment, battery-powered equipment, smoke alarms, CO detectors, and medical instrumentation.
- How does the OPA348AIDBVT handle capacitive loads?
It can handle capacitive loads effectively by using small-valued resistors or by adding a small capacitor in the feedback loop to reduce overshoot.
- What is the operating voltage range of the OPA348AIDBVT?
The operating voltage range is from 2.1 V to 5.5 V.
