Overview
The OPA4170AIDR is a part of the OPAx170 family of operational amplifiers (op amps) produced by Texas Instruments. This device is a quad-channel, single-supply, low-noise op amp designed for a wide range of applications. It operates on supply voltages from 2.7 V to 36 V, making it versatile for various power supply conditions. The OPA4170AIDR features low noise, high common-mode rejection, and low bias current, making it suitable for precision and low-power applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage Range | 2.7 | - | 36 | V |
| Input Offset Voltage (VOS) | - | 0.25 | ±1.8 | mV |
| Input Offset Voltage Drift (dVOS/dT) | - | ±0.3 | ±2 | µV/°C |
| Common-Mode Rejection Ratio (CMRR) | 104 | 120 | - | dB |
| Power Supply Rejection Ratio (PSRR) | 104 | 120 | - | dB |
| Open-Loop Gain (AOL) | 110 | 130 | - | dB |
| Gain Bandwidth Product (GBP) | - | 1.2 | - | MHz |
| Slew Rate | - | 0.4 | - | V/µs |
| Settling Time to 0.1% (10-V step) | - | 20 | - | µs |
| Quiescent Current per Amplifier | - | 110 | 145 | µA |
| Operating Temperature Range | -40 | - | 125 | °C |
Key Features
- Low noise: 19 nV/√Hz voltage noise density.
- RFI filtered inputs.
- Input range includes the negative supply and operates to within 2 V of the positive supply.
- Rail-to-rail output.
- High common-mode rejection ratio (CMRR): 120 dB.
- Low bias current: 15 pA (maximum).
- Industry-standard packages and micro packages available.
- Stable with capacitive loads up to 300 pF.
- No phase reversal for input signals beyond the supply rails.
Applications
- Tracking amplifiers 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 for the OPA4170AIDR?
The OPA4170AIDR operates on supply voltages from 2.7 V to 36 V.
- What is the input offset voltage of the OPA4170AIDR?
The input offset voltage (VOS) is typically 0.25 mV and can range up to ±1.8 mV.
- What is the common-mode rejection ratio (CMRR) of the OPA4170AIDR?
The CMRR is typically 120 dB.
- What is the gain bandwidth product (GBP) of the OPA4170AIDR?
The GBP is 1.2 MHz.
- What is the slew rate of the OPA4170AIDR?
The slew rate is 0.4 V/µs.
- What is the settling time to 0.1% for a 10-V step?
The settling time is 20 µs.
- What is the quiescent current per amplifier?
The quiescent current is typically 110 µA and can range up to 145 µA.
- What is the operating temperature range of the OPA4170AIDR?
The operating temperature range is from -40°C to 125°C.
- Is the OPA4170AIDR stable with capacitive loads?
Yes, it is stable with capacitive loads up to 300 pF.
- Does the OPA4170AIDR exhibit phase reversal for input signals beyond the supply rails?
No, it does not exhibit phase reversal for input signals beyond the supply rails.
