Overview
The OPA4130UA/2K5 is a precision FET-input operational amplifier produced by Texas Instruments. It is part of the OPAx130 series, which includes the OPA130, OPA2130, and OPA4130 models. These op amps are designed to combine precision DC performance with low quiescent current, making them suitable for general-purpose, portable, and battery-operated applications, especially those with high source impedance.
The OPA4130UA/2K5 is available in a 14-pin SOIC surface-mount package and is specified for operation over a temperature range of –40°C to +85°C. It is known for its ease of use and freedom from phase inversion and overload problems common in other FET-input op amps.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (Dual Supply) | ±2.25 | ±15 | ±18 | V |
| Supply Voltage (Single Supply) | 4.5 | 30 | 36 | V |
| Operating Temperature | –40 | 25 | 85 | °C |
| Quiescent Current (per amplifier) | 530 | 650 | µA | |
| Input Bias Current | 20 | pA | ||
| Offset Voltage | 1 | mV | ||
| Open-Loop Gain | 123 | dB (RL = 10kΩ) | ||
| Common-Mode Rejection Ratio (CMRR) | 90 | 105 | dB | |
| Bandwidth | 1 | MHz | ||
| Output Current | 18 | mA | ||
| Slew Rate | 2 | V/µs |
Key Features
- Low quiescent current: 530µA/amp
- Low offset voltage: 1mV max
- High open-loop gain: 123dB (RL = 10kΩ)
- High CMRR: 90dB min
- FET input: IB = 20pA max
- Excellent bandwidth: 1MHz
- Wide supply range: ±2.25V to ±18V
- Single, dual, and quad versions available
- Input cascode circuitry for excellent common-mode rejection
- Stable in unity gain and excellent dynamic behavior over a wide range of load conditions
- Completely independent circuitry in dual and quad designs for lowest crosstalk
Applications
- Data acquisition (DAQ)
- Flow transmitter
- Lab and field instrumentation
- Electrocardiogram (ECG)
- General-purpose, portable, and battery-operated applications
Q & A
- What is the typical quiescent current of the OPA4130UA/2K5?
The typical quiescent current is 530µA per amplifier.
- What is the maximum offset voltage of the OPA4130UA/2K5?
The maximum offset voltage is 1mV.
- What is the bandwidth of the OPA4130UA/2K5?
The bandwidth is 1MHz.
- What is the common-mode rejection ratio (CMRR) of the OPA4130UA/2K5?
The CMRR is a minimum of 90dB and typically 105dB.
- What is the operating temperature range of the OPA4130UA/2K5?
The operating temperature range is –40°C to +85°C.
- What types of packages are available for the OPA4130UA/2K5?
The OPA4130UA/2K5 is available in a 14-pin SOIC surface-mount package.
- What are some common applications of the OPA4130UA/2K5?
Common applications include data acquisition, flow transmitters, lab and field instrumentation, and electrocardiograms (ECG).
- What is the slew rate of the OPA4130UA/2K5?
The slew rate is typically 2V/µs.
- What is the maximum output current of the OPA4130UA/2K5?
The maximum output current is 18mA.
- Is the OPA4130UA/2K5 stable in unity gain?
Yes, the OPA4130UA/2K5 is stable in unity gain and provides excellent dynamic behavior over a wide range of load conditions.
