Overview
The AD8500AKSZ-REEL7 is a micropower precision CMOS operational amplifier produced by Analog Devices Inc. This op-amp is designed for low power consumption and high precision, making it ideal for a variety of battery-powered portable applications. It features a maximum supply current of 1 μA, rail-to-rail input and output, and a low input bias current of 1 pA. The AD8500 operates over a wide supply voltage range from +1.8 V to +5.5 V for single-supply or ±0.9 V to ±2.75 V for dual-supply configurations.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Offset Voltage | VOS | −40°C < TA < +85°C | 0.1 | 1 | 1.5 | 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 |
| Common-Mode Rejection Ratio | CMRR | 0 V < VCM < 5 V | 70 | 90 | 90 | dB |
| Large Signal Voltage Gain | AVO | 0.1 V < VOUT < 4.9 V | 80 | 120 | 120 | dB |
| Output Voltage High | VOH | RLOAD = 100 kΩ to GND | 4.970 | 4.995 | 4.995 | V |
| Output Voltage Low | VOL | RLOAD = 100 kΩ to VS | 0.85 | 5 | 5 | mV |
| Supply Current/Amplifier | ISY | VO = VS/2 | 0.65 | 1 | 2 | μA |
| Slew Rate | SR | 0.004 | V/μs | |||
| Gain Bandwidth Product | GBP | 7 | kHz |
Key Features
- Low power consumption with a maximum supply current of 1 μA.
- Rail-to-rail input and output capability.
- Low input bias current of 1 pA.
- Wide supply voltage range: +1.8 V to +5.5 V (single-supply) or ±0.9 V to ±2.75 V (dual-supply).
- High common-mode rejection ratio (CMRR) of 70 dB to 90 dB.
- Low noise performance with a voltage noise density of 190 nV/√Hz at 1 kHz.
Applications
The AD8500 is suitable for various battery-powered portable applications, including:
- ECGs and pulse monitors.
- Glucose meters.
- Smoke and fire detectors.
- Vibration monitors.
- Backup battery sensors.
Q & A
- What is the maximum supply current of the AD8500?
The maximum supply current of the AD8500 is 1 μA. - What is the input bias current of the AD8500?
The input bias current of the AD8500 is typically 1 pA. - What is the operating temperature range of the AD8500?
The AD8500 operates from −40°C to +125°C. - What are the typical output voltage ranges for the AD8500?
The output voltage high is typically 4.970 V to 4.995 V with a 100 kΩ load to GND, and the output voltage low is typically 0.85 mV to 5 mV with a 100 kΩ load to VS. - What is the common-mode rejection ratio (CMRR) of the AD8500?
The CMRR of the AD8500 is 70 dB to 90 dB. - What is the slew rate of the AD8500?
The slew rate of the AD8500 is 0.004 V/μs. - What is the gain bandwidth product (GBP) of the AD8500?
The GBP of the AD8500 is 7 kHz. - What are some typical applications of the AD8500?
The AD8500 is used in ECGs, pulse monitors, glucose meters, smoke and fire detectors, vibration monitors, and backup battery sensors. - Is the AD8500 RoHS compliant?
Yes, the AD8500 is RoHS compliant. - What is the package type of the AD8500AKSZ-REEL7?
The AD8500AKSZ-REEL7 comes in a 5-Lead SC70 package.
