Overview
The AD8546ARMZ-R7 is a micropower, rail-to-rail input/output (RRIO) operational amplifier produced by Analog Devices Inc. This device is part of the AD8546 series, known for its high input impedance, low power consumption, and wide operating supply voltage range. The AD8546 is particularly suited for applications requiring low power and high dynamic range, making it ideal for battery-powered, portable devices and various sensor applications.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage | VSY | 2.7 | - | 18 | V |
| Supply Current per Amplifier | ISY | 18 | 22 | 33 | μA |
| Input Bias Current | IB | - | 20 | 2.6 nA | pA |
| Offset Voltage | VOS | - | 3 | 12 | mV |
| Gain Bandwidth Product | - | - | 240 kHz | - | kHz |
| Slew Rate | SR | - | 75 | - | V/ms |
| Output Voltage High | VOH | - | 9.98 | - | V |
| Output Voltage Low | VOL | - | 20 mV | - | mV |
| Short-Circuit Current | ISC | - | ±11 mA | - | mA |
| Operating Temperature Range | TA | -40°C | - | +125°C | °C |
Key Features
- Micropower operation with a maximum supply current of 22 μA.
- Low input bias current of 20 pA maximum.
- Rail-to-rail input and output capability.
- High gain bandwidth product of 240 kHz at AV = 100.
- High slew rate of 75 V/ms.
- Wide operating supply voltage range from 2.7 V to 18 V or dual supplies (±1.35 V to ±9 V).
- High immunity to electromagnetic interference.
- Extended industrial temperature range of −40°C to +125°C.
- Available in an 8-lead MSOP package.
Applications
- Battery-powered, portable devices such as ECGs, pulse monitors, and glucose meters.
- Smoke and fire detectors, vibration monitors, and backup battery sensors.
- Sensor front ends or high impedance input sources used in wireless or remote sensors or transmitters.
- DC gain and buffering applications.
- Low frequency data converters.
Q & A
- What is the maximum supply current of the AD8546ARMZ-R7?
The maximum supply current is 22 μA.
- What is the input bias current of the AD8546ARMZ-R7?
The input bias current is 20 pA maximum.
- What is the gain bandwidth product of the AD8546ARMZ-R7?
The gain bandwidth product is 240 kHz at AV = 100.
- What is the slew rate of the AD8546ARMZ-R7?
The slew rate is 75 V/ms.
- What is the operating temperature range of the AD8546ARMZ-R7?
The operating temperature range is −40°C to +125°C.
- What package type is the AD8546ARMZ-R7 available in?
The AD8546ARMZ-R7 is available in an 8-lead MSOP package.
- What are some typical applications of the AD8546ARMZ-R7?
Typical applications include battery-powered devices, sensor front ends, and low frequency data converters.
- What is the power supply rejection ratio (PSRR) of the AD8546ARMZ-R7?
The PSRR is 95 dB to 115 dB over the temperature range.
- Does the AD8546ARMZ-R7 have high immunity to electromagnetic interference?
Yes, it has high immunity to electromagnetic interference.
- What is the output voltage high and low of the AD8546ARMZ-R7?
The output voltage high is 9.98 V, and the output voltage low is 20 mV.
