Overview
The AD8506ARMZ-R7, produced by Analog Devices Inc., is a dual micropower operational amplifier that features rail-to-rail input/output swings. This amplifier is part of the AD8505/AD8506/AD8508 family, which is designed to optimize performance in current consumption, power supply rejection ratio (PSRR), common-mode rejection ratio (CMRR), and zero input crossover distortion. It operates from a single 1.8 V to 5 V power supply or from dual ±0.9 V to ±2.5 V power supplies, making it ideal for battery-powered applications where minimizing errors due to power supply voltage variations is crucial.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | 0 V ≤ VCM ≤ 1.8 V | 0.5 | 2.5 | 3.5 | mV |
| Input Bias Current | IB | −40°C ≤ TA ≤ +85°C | 1 | 10 | 100 | pA |
| Input Offset Current | IOS | −40°C ≤ TA ≤ +85°C | 0.5 | 5 | 50 | pA |
| Supply Current per Amplifier | ISY | VOUT = VSY/2, −40°C ≤ TA ≤ +125°C | 15 | 20 | 25 | μA |
| Power Supply Rejection Ratio | PSRR | VSY = 1.8 V to 5 V, −40°C ≤ TA ≤ +125°C | 95 | 100 | 110 | dB |
| Common-Mode Rejection Ratio | CMRR | −40°C ≤ TA ≤ +125°C | 80 | 105 | dB | |
| Output Voltage High | VOH | RL = 100 kΩ to GND, −40°C ≤ TA ≤ +125°C | 4.98 | 4.99 | V | |
| Output Voltage Low | VOL | RL = 100 kΩ to VSY, −40°C ≤ TA ≤ +125°C | 5 | 25 | mV | |
| Short-Circuit Limit | ISC | VOUT = VSY or GND, −40°C ≤ TA ≤ +125°C | ±45 | mA |
Key Features
- Rail-to-Rail Input/Output Swings: The AD8506ARMZ-R7 operates with rail-to-rail input and output swings, ensuring maximum signal range.
- Zero Input Crossover Distortion: This feature minimizes distortion and ensures high linearity in the output signal.
- Low Noise: The amplifier has a low voltage noise density of 45 nV/√Hz at 1 kHz and a peak-to-peak voltage noise of 2.8 μV from 0.1 Hz to 10 Hz.
- Low Supply Current: The amplifier consumes less than 20 μA per amplifier, making it suitable for battery-powered applications.
- High PSRR and CMRR: The amplifier offers a PSRR of 100 dB minimum and a CMRR of 105 dB typical, ensuring high immunity to power supply and common-mode noise.
- Wide Operating Temperature Range: The amplifier is specified for both the industrial temperature range of −40°C to +85°C and the extended industrial temperature range of −40°C to +125°C.
Applications
- Pressure and Position Sensors: Ideal for applications requiring precise signal amplification.
- Remote Security and Bio Sensors: Suitable for low-power, high-accuracy sensing applications.
- IR Thermometers: Used in temperature measurement applications where low noise and high accuracy are critical.
- Battery-Powered Consumer Equipment: Perfect for devices that require low power consumption and high performance.
- Hazard Detectors: Used in smoke, fire, and gas detection systems where reliability and accuracy are paramount.
- Handheld Instrumentation and Patient Monitors: Suitable for portable medical and measurement devices.
Q & A
- What is the typical supply current of the AD8506ARMZ-R7?
The typical supply current per amplifier is 20 μA. - What is the operating voltage range of the AD8506ARMZ-R7?
The amplifier operates from a single 1.8 V to 5 V power supply or from dual ±0.9 V to ±2.5 V power supplies. - What is the common-mode rejection ratio (CMRR) of the AD8506ARMZ-R7?
The CMRR is typically 105 dB. - What is the noise density of the AD8506ARMZ-R7 at 1 kHz?
The voltage noise density is 45 nV/√Hz at 1 kHz. - What are the typical applications of the AD8506ARMZ-R7?
Applications include pressure and position sensors, remote security and bio sensors, IR thermometers, battery-powered consumer equipment, and hazard detectors. - What is the short-circuit limit of the AD8506ARMZ-R7?
The short-circuit limit is ±45 mA. - What are the available packages for the AD8506ARMZ-R7?
The AD8506 is available in 8-lead MSOP and 8-ball WLCSP packages. - What is the input bias current of the AD8506ARMZ-R7?
The input bias current is typically 1 pA. - What is the offset voltage of the AD8506ARMZ-R7?
The offset voltage is typically 2.5 mV. - What is the slew rate of the AD8506ARMZ-R7?
The slew rate is specified in the datasheet but not explicitly mentioned here; refer to the datasheet for detailed specifications.
