Overview
The OPA2325IDGKR, produced by Texas Instruments, is a precision, low-voltage complementary metal-oxide semiconductor (CMOS) operational amplifier. This device is part of the OPAx325 family, which includes single-channel (OPA325), dual-channel (OPA2325), and quad-channel (OPA4325) versions. The OPA2325 is specifically a dual-channel operational amplifier, available in SO-8 and MSOP-8 packages. It is optimized for very low noise and wide bandwidth while operating on a low quiescent current of 650 μA per channel. The OPA2325 features a linear input stage with zero-crossover distortion, delivering an excellent common-mode rejection ratio (CMRR) of typically 114 dB over the entire input range.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Supply Voltage Range | 2.2 V to 5.5 V or ±1.1 V to ±2.75 V | V |
| Quiescent Current per Amplifier | 650 μA | μA |
| Input Offset Voltage | 150 μV | μV |
| Input Offset Voltage Drift | 7.5 μV/°C | μV/°C |
| Common-Mode Rejection Ratio (CMRR) | 114 dB | dB |
| Power-Supply Rejection Ratio (PSRR) | High over the entire supply range | - |
| Bandwidth | 10 MHz | MHz |
| Slew Rate | 5 V/μs | V/μs |
| Input Bias Current | 0.2 pA | pA |
| Noise | 9 nV/√Hz at 10 kHz | nV/√Hz |
| Output Voltage Swing from Rails | 10 mV to 20 mV | mV |
| Package | SO-8, MSOP-8 | - |
Key Features
- Rail-to-rail input and output capability
- High common-mode rejection ratio (CMRR) of typically 114 dB
- Wide bandwidth of 10 MHz and high slew rate of 5 V/μs
- Low noise of 9 nV/√Hz at 10 kHz
- Low input bias current of 0.2 pA
- Unity-gain stable
- Zero-crossover distortion
- Wide supply-voltage range from 2.2 V to 5.5 V
- Excellent power-supply rejection ratio (PSRR) over the entire supply range
Applications
- High-Z sensor signal conditioning
- Transimpedance amplifiers
- Test and measurement equipment
- Programmable logic controllers (PLCs)
- Motor control loops
- Communications
- Input, output ADC, and DAC buffers
- Active filters
Q & A
- What is the typical quiescent current per amplifier for the OPA2325?
The typical quiescent current per amplifier is 650 μA.
- What is the common-mode rejection ratio (CMRR) of the OPA2325?
The CMRR is typically 114 dB over the entire input range.
- What is the bandwidth and slew rate of the OPA2325?
The bandwidth is 10 MHz, and the slew rate is 5 V/μs.
- What is the input bias current of the OPA2325?
The input bias current is 0.2 pA.
- What is the noise level of the OPA2325 at 10 kHz?
The noise level is 9 nV/√Hz at 10 kHz.
- Is the OPA2325 unity-gain stable?
- What are the typical output voltage swing limits from the rails for the OPA2325?
The output voltage typically swings within 10 mV to 20 mV of the rails.
- In what packages is the OPA2325 available?
The OPA2325 is available in SO-8 and MSOP-8 packages.
- What are some common applications of the OPA2325?
Common applications include high-Z sensor signal conditioning, transimpedance amplifiers, test and measurement equipment, PLCs, motor control loops, communications, and ADC/DAC buffers.
- What is the supply voltage range for the OPA2325?
The supply voltage range is from 2.2 V to 5.5 V or ±1.1 V to ±2.75 V.
