Overview
The AD8504ARUZ-REEL is a 1 μA micropower CMOS operational amplifier produced by Analog Devices Inc. This device is designed for low-power applications and is particularly suited for battery-powered portable equipment due to its ultra-low power consumption and high accuracy.
The AD8504 offers single-supply or dual-supply operation, rail-to-rail input and output, and unity gain stability, making it versatile for various applications. It is fully specified over the industrial temperature range (−40°C to +85°C) and the extended industrial temperature range (−40°C to +125°C).
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Current/Amplifier | VO = VS/2 | 0.65 | 1 | 1.5 | μA (−40°C < TA < +85°C) |
| Offset Voltage | 3 | mV | |||
| Power Supply Rejection Ratio (PSRR) | 1.8 V < VS < 5 V | 85 | 105 | dB (−40°C < TA < +85°C) | |
| Slew Rate (SR) | RLOAD = 1 MΩ | 0.004 | V/μs | ||
| Gain Bandwidth Product (GBP) | 7 | kHz | |||
| Phase Margin (ØO) | 60 | Degrees | |||
| Output Voltage Low (VOL) | RLOAD = 100 kΩ to VS | 1.0 | 5 | 7 | mV (−40°C < TA < +85°C) |
| Short-Circuit Current (ISC) | VOUT = GND | ±5 | mA |
Key Features
- Ultra-low supply current: 1 μA maximum per amplifier
- Low offset voltage: 3 mV maximum
- Single-supply or dual-supply operation
- Rail-to-rail input and output
- No phase reversal
- Unity gain stable
- High accuracy without system calibration
- Full specification over industrial and extended industrial temperature ranges
Applications
- Portable equipment
- Remote sensors
- Low power filters
- Threshold detectors
- Current sensing
- Bedside monitors
- Pulse monitors
- Glucose meters
- Smoke and fire detectors
- Vibration monitors
- Backup battery sensors
Q & A
- What is the maximum supply current of the AD8504?
The maximum supply current of the AD8504 is 1 μA per amplifier.
- What is the offset voltage of the AD8504?
The offset voltage of the AD8504 is 3 mV maximum.
- Can the AD8504 operate on a single supply or dual supply?
- What is the input and output range of the AD8504?
The AD8504 has rail-to-rail input and output capabilities).
- Is the AD8504 unity gain stable?
- What are the typical applications of the AD8504?
The AD8504 is typically used in portable equipment, remote sensors, low power filters, threshold detectors, current sensing, and various medical and safety devices).
- What is the temperature range for the AD8504?
The AD8504 is fully specified over the industrial temperature range (−40°C to +85°C) and the extended industrial temperature range (−40°C to +125°C)).
- What is the slew rate of the AD8504?
The slew rate of the AD8504 is 0.004 V/μs with a load resistance of 1 MΩ).
- What is the gain bandwidth product (GBP) of the AD8504?
The gain bandwidth product (GBP) of the AD8504 is 7 kHz).
- What is the phase margin of the AD8504?
The phase margin of the AD8504 is 60 degrees).
