Overview
The OPA171AIDBVR is a member of the OPAx171 family of operational amplifiers produced by Texas Instruments. These devices are designed for general-purpose applications and offer high overall performance. The OPA171AIDBVR operates on a single supply ranging from 2.7V to 36V (or ±1.35V to ±18V) and is available in various packages, including the SOT-553 package. This amplifier is known for its low noise, low offset drift, and high common-mode rejection ratio (CMRR), making it suitable for a wide range of applications. The device is stable with capacitive loads up to 300pF and features internal phase-reversal protection, ensuring that the output does not reverse into the opposite rail when the input is driven beyond the specified common-mode voltage range.
Key Specifications
| Parameter | Min | Typical | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 2.7 | - | 36 | V |
| Input Offset Voltage (VOS) | - | 0.25 | 1.8 | mV |
| Input Offset Voltage Drift (dVOS/dT) | - | 0.3 | 2 | µV/°C |
| Input Bias Current (IB) | - | ±8 | ±15 | pA |
| Input Voltage Noise Density at 1 kHz | - | 14 | - | nV/√Hz |
| Gain Bandwidth Product (GBW) | - | 3 | - | MHz |
| Quiescent Current per Amplifier (IQ) | - | 475 | 595 | µA |
| Common-Mode Rejection Ratio (CMRR) | - | 120 | - | dB |
| Operating Temperature Range | -40 | - | 125 | °C |
Key Features
- Low noise: 14nV/√Hz at 1 kHz
- Low offset drift: ±0.3µV/°C (Typical)
- RFI filtered inputs
- Rail-to-rail output
- High common-mode rejection ratio: 120dB (Typical)
- Low-input bias current: ±8pA
- Low quiescent current: 475µA per amplifier
- Internal phase-reversal protection
- Stable with capacitive loads up to 300pF
- Available in industry-standard packages: SOT-23, SOIC, TSSOP, and microPackages like SOT-553 and VSSOP-8
Applications
- Tracking amplifier in power modules
- Merchant power supplies
- Transducer amplifiers
- Bridge amplifiers
- Temperature measurements
- Strain gauge amplifiers
- Precision integrators
- Battery-powered instruments
- Test equipment
Q & A
- What is the supply voltage range of the OPA171AIDBVR?
The supply voltage range is from 2.7V to 36V (or ±1.35V to ±18V).
- What is the typical input offset voltage of the OPA171AIDBVR?
The typical input offset voltage is 0.25 mV.
- What is the input bias current of the OPA171AIDBVR?
The input bias current is ±8 pA.
- What is the gain bandwidth product (GBW) of the OPA171AIDBVR?
The GBW is 3 MHz.
- Is the OPA171AIDBVR stable with capacitive loads?
Yes, it is stable with capacitive loads up to 300 pF.
- What is the operating temperature range of the OPA171AIDBVR?
The operating temperature range is from -40°C to +125°C.
- Does the OPA171AIDBVR have phase-reversal protection?
Yes, it has internal phase-reversal protection.
- What are some common applications of the OPA171AIDBVR?
Common applications include tracking amplifiers in power modules, merchant power supplies, transducer amplifiers, and more.
- What packages are available for the OPA171AIDBVR?
It is available in packages such as SOT-23, SOIC, TSSOP, and microPackages like SOT-553 and VSSOP-8.
- What is the quiescent current per amplifier for the OPA171AIDBVR?
The quiescent current per amplifier is 475 µA.
