Overview
The OP727AR, produced by Analog Devices Inc., is a precision dual rail-to-rail output operational amplifier. It is designed for micropower operation, making it suitable for a wide range of applications where low power consumption is critical. The OP727AR features a dual configuration, offering two independent operational amplifiers in a single package, which is particularly useful in space-constrained designs. This amplifier is known for its low offset voltage, low input bias current, and high common-mode rejection ratio, ensuring high precision and reliability in various operational scenarios.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | +25°C < T_A < +85°C | 30 | - | 160 | μV |
| Input Bias Current | IB | –40°C < T_A < +85°C | 5.5 | - | 11 | nA |
| Input Offset Current | IOS | –40°C < T_A < +85°C | 0.1 | - | 2 | nA |
| Input Voltage Range | - | - | -15 | - | +14 | V |
| Common-Mode Rejection Ratio | CMRR | V_CM = –15 V to +14 V | 110 | - | 120 | dB |
| Large Signal Voltage Gain | AVO | R_L = 10 kΩ, V_O = –14.5 V to +14.5 V | 1,000 | - | 2,500 | V/mV |
| Output Voltage High | V_OH | I_L = 1 mA, –40°C to +85°C | +14.9 | - | +14.94 | V |
| Output Voltage Low | V_OL | I_L = 1 mA, –40°C to +85°C | 126 | - | 140 | mV |
| Supply Current/Amplifier | I_SY | V_O = 0 V, –40°C < T_A < +85°C | 235 | - | 320 | μA |
| Supply Voltage Range | - | - | 2.7 | - | 30 | V |
| Operating Temperature | - | - | –40 | - | +85 | °C |
| Package | - | - | - | - | 8-TSSOP | - |
Key Features
- Precision Operation: Low offset voltage (30 μV max) and low input bias current (5.5 nA max) ensure high accuracy in measurements.
- Micropower Operation: Low supply current (235 μA to 320 μA per amplifier) makes it suitable for battery-powered devices.
- Rail-to-Rail Output: The amplifier can drive the output voltage to within a few millivolts of the supply rails, maximizing dynamic range.
- Single-Supply Operation: Can operate from a single supply voltage ranging from 2.7 V to 30 V.
- Dual-Supply Operation: Also supports dual-supply operation from ±1.35 V to ±15 V.
- High Common-Mode Rejection Ratio (CMRR): 110 dB to 120 dB, ensuring minimal interference from common-mode signals.
- Unity Gain Stable: No phase reversal, making it stable in unity gain configurations.
Applications
- Current Sensing (Shunt): Ideal for current sensing applications due to its low offset voltage and high CMRR.
- Line or Battery-Powered Instrumentation: Suitable for both line-powered and battery-powered instruments due to its micropower operation.
- Remote Sensors: Used in remote sensor applications where low power consumption is crucial.
- Precision Filters: Can be used in precision filter circuits requiring high accuracy and low noise.
Q & A
- What is the typical offset voltage of the OP727AR?
The typical offset voltage of the OP727AR is 30 μV. - What is the input bias current range of the OP727AR?
The input bias current range is from 5.5 nA to 11 nA. - What is the supply current range per amplifier for the OP727AR?
The supply current range per amplifier is from 235 μA to 320 μA. - What is the operating temperature range of the OP727AR?
The operating temperature range is from –40°C to +85°C. - What package types are available for the OP727AR?
The OP727AR is available in 8-lead TSSOP and 8-lead SOIC packages. - Is the OP727AR suitable for single-supply operation?
Yes, it can operate from a single supply voltage ranging from 2.7 V to 30 V. - What is the common-mode rejection ratio (CMRR) of the OP727AR?
The CMRR is between 110 dB and 120 dB. - Is the OP727AR unity gain stable?
Yes, the OP727AR is unity gain stable with no phase reversal. - What are some common applications of the OP727AR?
Common applications include current sensing, line or battery-powered instrumentation, remote sensors, and precision filters. - What is the slew rate of the OP727AR?
The slew rate of the OP727AR is 0.2 V/μs.
