Overview
The OP191GSZ, produced by Analog Devices Inc., is a micropower, single-supply, rail-to-rail input/output operational amplifier. This device is part of the OPx91 family, which includes single (OP191), dual (OP291), and quad (OP491) configurations. The OP191GSZ is designed for low power consumption and high performance, making it suitable for a variety of applications requiring precision and reliability.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage | V_S | 2.7 | 12 | V | ||
| Offset Voltage | VOS | −40°C ≤ TA ≤ +125°C | 80 | 500 | 1 mV | μV |
| Input Bias Current | IB | −40°C ≤ TA ≤ +125°C | 30 | 65 | 95 | nA |
| Input Offset Current | IOS | −40°C ≤ TA ≤ +125°C | 0.1 | 11 | 22 | nA |
| Supply Current/Amplifier | ISY | VO = 0 V, −40°C ≤ TA ≤ +125°C | 260 | 420 | 550 | μA |
| Slew Rate | ±SR | RL = 10 kΩ | 0.5 | V/μs | ||
| Gain Bandwidth Product | GBP | 3 | MHz | |||
| Phase Margin | θO | 45 | Degrees | |||
| Voltage Noise Density | en | f = 1 kHz | 42 | nV/√Hz | ||
| Current Noise Density | in | f = 1 kHz | 0.8 | pA/√Hz |
Key Features
- Single-Supply Operation: The OP191GSZ operates from a single supply voltage ranging from 2.7 V to 12 V and is also compatible with ±5 V dual supplies.
- Rail-to-Rail Input/Output: The amplifier features rail-to-rail input and output stages, allowing the input voltage to extend 10 V beyond either supply without phase inversion or latch-up.
- Low Supply Current: It has a low supply current of 260 μA to 420 μA per amplifier, making it suitable for power-sensitive applications.
- Wide Bandwidth: The device offers a wide bandwidth of 3 MHz and a slew rate of 0.5 V/μs.
- Low Offset Voltage: The OP191GSZ has a low offset voltage of 80 μV to 500 μV, ensuring high precision.
- Low Noise Performance: It features low voltage noise density of 42 nV/√Hz and current noise density of 0.8 pA/√Hz.
Applications
- Portable Telecommunications Equipment: The low power consumption and high performance make it ideal for portable telecommunications devices.
- Power Supply Control and Protection: The rail-to-rail input/output and low offset voltage make it suitable for power supply control and protection circuits.
- Industrial Automation: It can be used in various industrial automation applications where precision and reliability are crucial.
- Medical Devices: The OP191GSZ is also applicable in medical devices that require low noise and high precision amplification.
Q & A
- What is the supply voltage range for the OP191GSZ?
The OP191GSZ operates from a single supply voltage ranging from 2.7 V to 12 V and is also compatible with ±5 V dual supplies.
- What are the key features of the OP191GSZ?
The key features include single-supply operation, rail-to-rail input/output, low supply current, wide bandwidth, low offset voltage, and low noise performance.
- What is the slew rate of the OP191GSZ?
The slew rate of the OP191GSZ is 0.5 V/μs.
- What is the gain bandwidth product of the OP191GSZ?
The gain bandwidth product (GBP) of the OP191GSZ is 3 MHz.
- What are the typical applications of the OP191GSZ?
The OP191GSZ is typically used in portable telecommunications equipment, power supply control and protection, industrial automation, and medical devices.
- What is the input bias current of the OP191GSZ?
The input bias current of the OP191GSZ is typically 65 nA, with a maximum of 95 nA over the temperature range of −40°C to +125°C.
- What is the voltage noise density of the OP191GSZ?
The voltage noise density of the OP191GSZ is 42 nV/√Hz at 1 kHz.
- What is the phase margin of the OP191GSZ?
The phase margin of the OP191GSZ is 45 degrees.
- What are the package options for the OP191GSZ?
The OP191GSZ is available in various packages including SOIC, PDIP, and TSSOP.
- What is the operating temperature range for the OP191GSZ?
The OP191GSZ operates over a temperature range of −40°C to +125°C.
