Overview
The OPA4317IPWR, part of the OPAx317 family, is a precision operational amplifier produced by Texas Instruments. This device is known for its low-power consumption and high precision, making it suitable for a wide range of general-purpose applications. The OPA4317 is a quad version of the OPA317 series, offering rail-to-rail input and output, and is optimized for low-voltage operation from 1.8 V to 5.5 V. It features a proprietary Zerø-Drift autocalibration technique, which ensures low offset voltage and near-zero drift over time and temperature. This amplifier is particularly useful in applications requiring high DC accuracy and low noise.
Key Specifications
| Parameter | Typical | Minimum | Maximum | Unit |
|---|---|---|---|---|
| Offset Voltage (VOS) | 20 μV | ±90 μV | ±100 μV | μV |
| Input Offset Voltage Drift (dVOS/dT) | 0.05 μV/°C | μV/°C | ||
| Common-Mode Rejection Ratio (CMRR) | 108 dB | 95 dB | dB | |
| Power-Supply Rejection Ratio (PSRR) | 10 μV/V | μV/V | ||
| Quiescent Current (IQ) | 21 μA | 35 μA | μA | |
| Gain Bandwidth Product | 300 kHz | kHz | ||
| Input Bias Current (IB) | ±200 pA | ±155 pA | ±300 pA | pA |
| Input Voltage Noise Density (en) | 55 nV/√Hz | nV/√Hz | ||
| Operating Temperature Range | -40°C | +125°C | °C | |
| Package | SOIC-14, TSSOP-14 |
Key Features
- Rail-to-Rail Input and Output: The OPA4317 features rail-to-rail input and output, allowing for full dynamic range in low-supply applications.
- Low Offset Voltage and Drift: Utilizes a proprietary Zerø-Drift autocalibration technique to provide low offset voltage (20 μV typical) and near-zero drift over time and temperature.
- Low Power Consumption: Operates with a quiescent current of 35 μA maximum.
- High CMRR and PSRR: Offers high common-mode rejection ratio (108 dB typical) and power-supply rejection ratio (10 μV/V typical).
- Internal EMI and RFI Filtering: Includes internal low-pass filters to reduce susceptibility to electromagnetic interference (EMI).
- Low Noise: Features low input voltage noise density (55 nV/√Hz at 1 kHz) and low 1/f noise.
Applications
- Battery-Powered Instruments: Ideal for battery-powered devices due to low power consumption.
- Temperature Measurements: Suitable for precise temperature measurement applications.
- Transducer Applications: Used in transducer applications requiring high DC accuracy.
- Electronic Scales: Applied in electronic scales for precise weight measurements.
- Medical Instrumentation: Used in medical devices where low noise and high precision are critical.
- Handheld Test Equipment: Suitable for handheld test equipment due to its low power and high precision.
- Current Sense: Used in current sensing applications requiring low offset voltage and drift.
Q & A
- What is the typical offset voltage of the OPA4317?
The typical offset voltage of the OPA4317 is 20 μV.
- What is the operating voltage range of the OPA4317?
The OPA4317 operates from 1.8 V to 5.5 V.
- What is the quiescent current of the OPA4317?
The quiescent current of the OPA4317 is 35 μA maximum.
- Does the OPA4317 have internal EMI filtering?
Yes, the OPA4317 includes internal low-pass filters to reduce susceptibility to electromagnetic interference (EMI).
- What is the common-mode rejection ratio (CMRR) of the OPA4317?
The CMRR of the OPA4317 is 108 dB typical.
- What are the package options for the OPA4317?
The OPA4317 is available in SOIC-14 and TSSOP-14 packages.
- What is the gain bandwidth product of the OPA4317?
The gain bandwidth product of the OPA4317 is 300 kHz.
- Is the OPA4317 suitable for high-side voltage-to-current converters?
Yes, the OPA4317 is suitable for high-side voltage-to-current converters due to its low offset voltage and drift.
- What is the input bias current of the OPA4317?
The input bias current of the OPA4317 is approximately ±200 pA.
- What is the operating temperature range of the OPA4317?
The operating temperature range of the OPA4317 is from -40°C to +125°C.
