Overview
The OPA349NA/250 is a single-channel, ultra-low power operational amplifier produced by Texas Instruments. This device is designed for battery-powered applications and features a low quiescent current of 1 µA, making it highly efficient for power-sensitive designs. The OPA349NA/250 operates with a gain-bandwidth product of 70 kHz and is unity-gain stable, requiring no external compensation. It is packaged in a SOT-23-5 (DBV) package, which is ideal for high-density applications.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | OPA349NA/250 |
| Package Type | SOT-23-5 (DBV) |
| Number of Pins | 5 |
| Quiescent Current | 1 µA |
| Gain-Bandwidth Product | 70 kHz |
| Slew Rate | 0.02 V/µs |
| Supply Voltage Range | 1.8V to 5.5V |
| Input Bias Current | 10 pA (max) |
| Output Drive Current | 8 mA |
| Operating Temperature Range | 0°C to 70°C |
| Package Dimensions | Length: 2.9 mm, Width: 1.6 mm, Thickness: 1.2 mm, Pitch: 0.95 mm, Max Height: 1.45 mm |
Key Features
- Low supply current: 1 µA
- Gain-bandwidth product: 70 kHz
- Unity-gain stable, no external compensation required
- Low input bias current: 10 pA (max)
- Wide supply range: 1.8V to 5.5V
- Input range extends 200mV beyond the power-supply rails
- Output swings to within 350mV of the rails
- Output drive current: 8 mA
- Open-loop gain: 90 dB
- Available in miniature SOT23-5, SC70, and SO-8 surface-mount packages
Applications
- Battery packs and power supplies
- Portable phones, pagers, and cameras
- Solar-powered systems
- Smoke, gas, and fire detection systems
- Remote sensors
- PCMCIA cards
- Driving analog-to-digital (A/D) converters
- Micro-power filters
Q & A
- What is the quiescent current of the OPA349NA/250?
The quiescent current of the OPA349NA/250 is 1 µA.
- What is the gain-bandwidth product of the OPA349NA/250?
The gain-bandwidth product of the OPA349NA/250 is 70 kHz.
- Is the OPA349NA/250 unity-gain stable?
Yes, the OPA349NA/250 is unity-gain stable and does not require external compensation.
- What is the input bias current of the OPA349NA/250?
The input bias current of the OPA349NA/250 is 10 pA (max).
- What is the supply voltage range for the OPA349NA/250?
The supply voltage range for the OPA349NA/250 is from 1.8V to 5.5V.
- What are the package options for the OPA349NA/250?
The OPA349NA/250 is available in SOT23-5, SC70, and SO-8 surface-mount packages.
- What are some typical applications for the OPA349NA/250?
Typical applications include battery packs, portable phones, solar-powered systems, smoke and gas detection systems, and remote sensors.
- What is the operating temperature range for the OPA349NA/250?
The operating temperature range for the OPA349NA/250 is from 0°C to 70°C.
- How much output drive current can the OPA349NA/250 provide?
The OPA349NA/250 can provide an output drive current of 8 mA.
- What is the open-loop gain of the OPA349NA/250?
The open-loop gain of the OPA349NA/250 is 90 dB.
