Overview
The OPA2227UA/2K5G4 is a high-precision, low-noise operational amplifier from Texas Instruments. It is part of the OPAx227 series, which combines low noise and wide bandwidth with high precision, making it an excellent choice for applications requiring both AC and precision DC performance. The OPA2227UA is a dual-channel version, available in an 8-pin SOIC package, and is pin-for-pin compatible with industry-standard OP27 and OP37 op-amps, offering substantial improvements across various parameters.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Offset Voltage (VOS) | ±5 | ±75 | ±100 | µV |
| Input Offset Voltage Drift (dVOS/dT) | ±0.1 | µV/°C | ||
| Common-Mode Rejection Ratio (CMRR) | 120 | 138 | dB | |
| Open-Loop Gain (AOL) | 132 | 160 | dB | |
| Bandwidth | 8 MHz | |||
| Slew Rate | 2.3 V/µs | |||
| Settling Time (G = 1, 10-V step, CL = 100 pF) | 5 µs | |||
| Quiescent Current per Amplifier (IQ) | ±3.7 | ±3.8 | ±4.2 | mA |
| Supply Voltage Range | ±2.5 V | ±18 V | ||
| Operating Temperature Range | –40°C | +85°C |
Key Features
- Low noise: 3 nV/√Hz
- Wide bandwidth: 8 MHz for OPA227 series
- High slew rate: 2.3 V/µs for OPA227 series
- High common-mode rejection ratio (CMRR): 138 dB
- High open-loop gain: 160 dB
- Low input bias current: 10 nA maximum
- Low offset voltage: 75 µV maximum
- Wide supply range: ±2.5 V to ±18 V
- Available in single, dual, and quad versions
- Pin-for-pin compatible with industry-standard OP27 and OP37 op-amps
Applications
- Data acquisition (DAQ)
- Condition monitoring sensors
- Spectrum analyzers
- Professional audio equipment (rack mount)
- Industrial AC-DC applications
- Telecom equipment
- Geophysical analysis
- Vibration analysis
- Spectral analysis
- Active filters
- Power supply controls
Q & A
- What is the input offset voltage of the OPA2227UA/2K5G4?
The input offset voltage is typically ±75 µV, with a maximum of ±100 µV.
- What is the common-mode rejection ratio (CMRR) of this op-amp?
The CMRR is 138 dB.
- What is the bandwidth of the OPA227 series?
The bandwidth is 8 MHz for the OPA227 series.
- What is the slew rate of the OPA227 series?
The slew rate is 2.3 V/µs for the OPA227 series.
- What is the operating temperature range of the OPA2227UA/2K5G4?
The operating temperature range is from –40°C to +85°C.
- What are the available package options for the OPA2227UA/2K5G4?
The OPA2227UA/2K5G4 is available in an 8-pin SOIC package.
- Is the OPA2227UA/2K5G4 pin-for-pin compatible with other op-amps?
Yes, it is pin-for-pin compatible with industry-standard OP27 and OP37 op-amps.
- What are some typical applications of the OPA2227UA/2K5G4?
Typical applications include data acquisition, condition monitoring sensors, spectrum analyzers, professional audio equipment, and industrial AC-DC applications.
- What is the quiescent current per amplifier for the OPA2227UA/2K5G4?
The quiescent current per amplifier is typically ±3.8 mA, with a maximum of ±4.2 mA.
- What is the supply voltage range for the OPA2227UA/2K5G4?
The supply voltage range is from ±2.5 V to ±18 V.
