Overview
The OP1177ARZ from Analog Devices Inc. is a high-precision operational amplifier that belongs to the OPx177 family. This single-channel amplifier is known for its extremely low offset voltage and drift, making it suitable for a wide range of precision applications. The OP1177ARZ is available in an 8-lead narrow SOIC package and is fully specified for operation from −40°C to +125°C, making it ideal for demanding operating environments.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Offset Voltage | VOS | 15 | - | 60 | μV |
| Input Bias Current | IB | -2 | 0.5 | 2 | nA |
| Input Offset Current | IOS | -1 | 0.2 | 1 | nA |
| Input Voltage Range | - | -3.5 | - | 3.5 | V |
| Common-Mode Rejection Ratio | CMRR | 120 | - | 126 | dB |
| Large Signal Voltage Gain | AVO | 1000 | - | 2000 | V/mV |
| Offset Voltage Drift | ΔVOS/ΔT | 0.2 | - | 0.7 | μV/°C |
| Output Voltage High | VOH | 4 | - | 4.1 | V |
| Output Voltage Low | VOL | -4.1 | - | -4 | V |
| Output Current | IOUT | - | - | ±10 | mA |
| Supply Current per Amplifier | ISY | 400 | - | 500 | μA |
| Power Supply Rejection Ratio | PSRR | 120 | - | 130 | dB |
Key Features
- Very low offset voltage: 60 μV maximum
- Low offset voltage drift: 0.7 μV/°C maximum
- Low input bias current: 2 nA maximum
- Low noise: 8 nV/√Hz typical
- High CMRR, PSRR, and AVO: > 120 dB minimum
- Low supply current: 400 μA per amplifier
- Dual supply operation: ±2.5 V to ±15 V
- Unity-gain stable, no phase reversal
- Inputs internally protected beyond supply voltage
Applications
- Wireless base station control circuits
- Optical network control circuits
- Instrumentation
- Sensors and controls
- Thermocouples
- Resistor thermal detectors (RTDs)
- Strain bridges
- Shunt current measurements
- Precision filters
Q & A
- What is the maximum offset voltage of the OP1177ARZ?
The maximum offset voltage is 60 μV. - What is the typical noise level of the OP1177ARZ?
The typical noise level is 8 nV/√Hz. - What is the input bias current range of the OP1177ARZ?
The input bias current range is -2 nA to 2 nA. - What is the common-mode rejection ratio (CMRR) of the OP1177ARZ?
The CMRR is greater than 120 dB. - What is the operating temperature range of the OP1177ARZ?
The operating temperature range is from −40°C to +125°C. - What are the package options for the OP1177ARZ?
The OP1177ARZ is available in an 8-lead narrow SOIC package. - Is the OP1177ARZ unity-gain stable?
Yes, the OP1177ARZ is unity-gain stable. - What is the supply current per amplifier for the OP1177ARZ?
The supply current per amplifier is 400 μA to 500 μA. - What are some typical applications of the OP1177ARZ?
Typical applications include wireless base station control circuits, optical network control circuits, instrumentation, and sensors and controls. - Does the OP1177ARZ have internal input protection?
Yes, the inputs are internally protected beyond the supply voltage.
