Overview
The NCS325SN2T1G is a precision, zero-drift operational amplifier produced by onsemi. This CMOS operational amplifier is part of the NCS325 family, which includes single, dual, and quad channel configurations. The NCS325SN2T1G is specifically the single-channel version, packaged in a space-saving SOT23-5 package. It is designed to provide high precision performance with low offset voltage, near-zero drift over time and temperature, and low noise characteristics. This makes it ideal for precision DC applications, particularly in low-voltage environments.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | VS = +5V | - | 14 | 50 | μV |
| Offset Voltage Drift vs Temp | ΔVOS/ΔT | TA = −40°C to 125°C | - | 0.02 | 0.25 | μV/°C |
| Input Bias Current | IIB | - | - | ±50 | pA | |
| Quiescent Current | IQ | No load | - | 21 | 35 | μA |
| Supply Voltage | VS | - | 1.8 | - | 5.5 | V |
| Common Mode Rejection Ratio | CMRR | VSS+0.3 < VCM < VDD − 0.3, VS = 5.5 V | 90 | - | 110 | dB |
| Input Resistance | RIN | - | - | - | 15 GΩ | - |
| Output Voltage High | VOH | - | - | - | 12 mV | - |
| Output Voltage Low | VOL | - | - | - | 8 mV | - |
| Short Circuit Current | ISC | - | - | - | ±5 mA | - |
Key Features
- Low Offset Voltage: 14 μV typical, 50 μV maximum at 25°C.
- Zero Drift: 0.25 μV/°C maximum drift over temperature.
- Low Noise: 1 μVpp from 0.1 Hz to 10 Hz.
- Low Quiescent Current: 21 μA typical, 35 μA maximum.
- Rail-to-Rail Input and Output: Full input and output swing within the supply rails.
- Internal EMI Filtering: Reduces susceptibility to electromagnetic interference.
- Environmentally Friendly: Pb-free, halogen-free/BFR-free, and RoHS compliant.
Applications
- Battery Powered Instruments: Ideal for low-power, precision applications.
- Temperature Measurements: Accurate temperature sensing due to low drift and offset.
- Transducer Applications: Suitable for amplifying signals from various transducers.
- Electronic Scales: Precision weighing applications benefit from low noise and drift.
- Medical Instrumentation: Used in medical devices requiring high precision and low noise.
- Current Sensing: Effective in low-side current sensing for feedback control and over-current detection.
Q & A
- What is the typical offset voltage of the NCS325SN2T1G?
The typical offset voltage is 14 μV at 25°C.
- What is the maximum drift over temperature for the NCS325SN2T1G?
The maximum drift over temperature is 0.25 μV/°C.
- What is the quiescent current of the NCS325SN2T1G?
The typical quiescent current is 21 μA, with a maximum of 35 μA.
- What is the supply voltage range for the NCS325SN2T1G?
The supply voltage range is from 1.8 V to 5.5 V.
- Does the NCS325SN2T1G have rail-to-rail input and output capability?
Yes, it has rail-to-rail input and output performance.
- Is the NCS325SN2T1G environmentally friendly?
Yes, it is Pb-free, halogen-free/BFR-free, and RoHS compliant.
- What are some typical applications of the NCS325SN2T1G?
Typical applications include battery-powered instruments, temperature measurements, transducer applications, electronic scales, medical instrumentation, and current sensing.
- How does the NCS325SN2T1G handle electromagnetic interference (EMI)?
The device integrates a low-pass filter to decrease its sensitivity to EMI.
- What is the package type for the NCS325SN2T1G?
The NCS325SN2T1G is packaged in a SOT23-5 package.
- What is the operating temperature range for the NCS325SN2T1G?
The operating temperature range is from -40°C to 125°C.
