Overview
The AD8553ARMZ, produced by Analog Devices Inc., is a precision instrumentation amplifier designed for high-accuracy and low-noise applications. It features a low offset voltage, minimal input offset drift, and high common-mode rejection ratio (CMRR). The amplifier operates on a single supply voltage ranging from 1.8V to 5.5V and includes a power-saving shutdown mode, reducing the total supply current to less than 4 µA. This makes it ideal for applications where precision and low power consumption are critical.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Offset Voltage (VOS) | G = 100 | 3 | 20 | μV | |
| Input Offset Drift (ΔVOS/ΔT) | G = 100, -40°C ≤ TA ≤ +85°C | 0.02 | 0.25 | μV/°C | |
| Common Mode Rejection Ratio (CMRR) | G = 100 | 120 | 140 | dB | |
| Voltage Noise | 0.01 Hz to 10 Hz | 0.7 | μV p-p | ||
| Gain Range | 0.1 | 10,000 | |||
| Supply Voltage | 1.8 | 5.5 | V | ||
| Shutdown Current | < 4 | μA | |||
| Operating Temperature Range | -40 | +85 | °C | ||
| Package Type | 10-lead MSOP, 10-TFSOP |
Key Features
- Low Offset Voltage and Drift: Maximum offset voltage of 20 µV and offset voltage drift of 0.1 µV/°C, ensuring high precision in measurements.
- High Common Mode Rejection Ratio (CMRR): Up to 140 dB at a gain of 100, providing excellent rejection of common-mode signals.
- Low Noise: Voltage noise of only 0.7 µV p-p from 0.01 Hz to 10 Hz, suitable for applications requiring minimal noise.
- Wide Gain Range: Adjustable gain from 0.1 to 10,000, offering flexibility in various applications.
- Single Supply Operation: Operates from a single supply voltage of 1.8V to 5.5V, simplifying circuit design.
- Rail-to-Rail Output: Ensures maximum output swing, making it suitable for a wide range of applications.
- Power-Saving Shutdown Mode: Reduces total supply current to less than 4 µA, ideal for battery-powered devices.
Applications
- Precision Instrumentation: Ideal for precision measurement instruments due to its low noise and high CMRR.
- Position and Pressure Sensors: Used in sensor applications requiring high accuracy and low drift.
- Medical Instrumentation: Suitable for medical devices where precision and low noise are critical.
- Strain Gauge Amplifiers: Used in strain gauge applications due to its high CMRR and low noise.
- Thermocouple Amplifiers: Ideal for thermocouple applications requiring high precision and low drift.
- Laser Diode Control Loops: Used in laser diode control circuits where precision and stability are essential.
Q & A
- What is the input offset voltage of the AD8553?
The input offset voltage of the AD8553 is 20 µV maximum at a gain of 100.
- What is the common mode rejection ratio (CMRR) of the AD8553?
The CMRR of the AD8553 is up to 140 dB at a gain of 100.
- What is the voltage noise of the AD8553?
The voltage noise of the AD8553 is 0.7 µV p-p from 0.01 Hz to 10 Hz.
- What is the gain range of the AD8553?
The gain range of the AD8553 is from 0.1 to 10,000.
- What is the operating supply voltage range of the AD8553?
The AD8553 operates from a single supply voltage of 1.8V to 5.5V.
- What is the shutdown current of the AD8553?
In shutdown mode, the total supply current is reduced to less than 4 µA.
- What are the typical applications of the AD8553?
The AD8553 is used in precision instrumentation, position and pressure sensors, medical instrumentation, strain gauge amplifiers, thermocouple amplifiers, and laser diode control loops.
- What is the package type of the AD8553?
The AD8553 is available in 10-lead MSOP and 10-TFSOP packages.
- What is the operating temperature range of the AD8553?
The AD8553 is specified over the industrial temperature range from -40°C to +85°C.
- Can the AD8553 be used as a current-output device?
Yes, the AD8553 can be configured to operate as a current-output device instead of a voltage-output device.
