Overview
The ADA4177-2ARMZ from Analog Devices Inc. is a dual-channel operational amplifier designed for precision and low noise applications. This device is part of the ADA4177 family, which includes single-channel, dual-channel, and quad-channel variants. The ADA4177-2 is known for its low offset voltage, low offset voltage drift, and low input bias current, making it suitable for a wide range of precision amplification tasks.
The amplifier features rail-to-rail output and is stable with capacitive loads of more than 1000 pF without external compensation. It also provides robust input protection against signal excursions up to 32 V beyond either supply and offers 70 dB of rejection for electromagnetic interference (EMI) at 1000 MHz.
Key Specifications
| Parameter | Typical | Minimum | Maximum | Unit |
|---|---|---|---|---|
| Input Offset Voltage | 2 µV | - | 3 µV | µV |
| Input Offset Voltage Drift | 1 µV/°C | - | 1.6 µV/°C | µV/°C |
| Input Bias Current | 0.4 nA | - | 300 pA | nA/pA |
| Supply Current per Amplifier | 500 µA | 480 µA | 620 µA | µA |
| Slew Rate | 1.5 V/µs | - | - | V/µs |
| Gain Bandwidth Product (GBP) | 3.5 MHz | - | - | MHz |
| Unity-Gain Crossover | 3.5 MHz | - | - | MHz |
| Operating Temperature | - | -40°C | 125°C | °C |
| Supply Voltage Range | - | ±2.5 V | ±18 V | V |
| Output Current | - | - | 25 mA | mA |
Key Features
- Low offset voltage: 2 µV typical, with a low offset voltage drift of 1 µV/°C maximum.
- Low input bias current: 0.4 nA typical.
- Low noise: 8 nV/√Hz typical voltage noise density at 1 kHz.
- Low current consumption: 500 µA typical supply current per amplifier.
- Rail-to-rail output and stable with capacitive loads of more than 1000 pF without external compensation.
- Input protection against signal excursions up to 32 V beyond either supply and 70 dB of EMI rejection at 1000 MHz.
- Unity-gain stable with a gain bandwidth product of 3.5 MHz and a unity-gain crossover frequency of 3.5 MHz.
Applications
- Sensor signal conditioning, including thermocouples, RTDs, and strain gages.
- Wireless base station control circuits and optical network control circuits.
- Instrumentation and control systems.
- Shunt current measurements.
- General-purpose precision amplification tasks requiring low noise and high accuracy.
Q & A
- What is the typical input offset voltage of the ADA4177-2? The typical input offset voltage is 2 µV.
- What is the maximum input bias current of the ADA4177-2? The maximum input bias current is 300 pA.
- What is the supply current per amplifier for the ADA4177-2? The typical supply current per amplifier is 500 µA.
- What is the slew rate of the ADA4177-2? The slew rate is 1.5 V/µs.
- What is the gain bandwidth product (GBP) of the ADA4177-2? The GBP is 3.5 MHz.
- What is the operating temperature range of the ADA4177-2? The operating temperature range is -40°C to 125°C.
- What kind of input protection does the ADA4177-2 offer? The ADA4177-2 offers input protection against signal excursions up to 32 V beyond either supply and 70 dB of EMI rejection at 1000 MHz.
- What is the typical output current of the ADA4177-2? The typical output current is 25 mA.
- What are some common applications of the ADA4177-2? Common applications include sensor signal conditioning, wireless base station control circuits, optical network control circuits, and instrumentation.
- What is the package type of the ADA4177-2ARMZ? The package type is 8-lead MSOP (Mini Small Outline Package).
