Overview
The AD8230YRZ, produced by Analog Devices Inc., is a low drift, differential sampling, precision instrumentation amplifier. This device is designed to provide high accuracy and stability in various measurement applications. The AD8230 features an auto-zeroing topology that reduces offset voltage drift to less than 50 nV/°C, making it ideal for thermocouple and bridge transducer applications. It operates over an extended industrial temperature range of −40°C to +125°C and is available in an 8-lead SOIC package.
Key Specifications
| Parameter | Specification |
|---|---|
| Supply Voltage Range | ±4 V to ±8 V (Dual Supplies), 8 V to 16 V (Single Supply) |
| Gain Range | 101 to 1000 (resistor programmable) |
| Input Offset Voltage | 10 μV maximum (RTI, ±5 V operation) |
| Offset Drift | 50 nV/°C maximum |
| Common Mode Rejection Ratio (CMRR) | 110 dB minimum @ 60 Hz, G = 10 to 1000 |
| Gain Nonlinearity | 20 ppm maximum |
| Input Noise Voltage Density | 240 nV/√Hz @ 1 kHz |
| Low Frequency Noise | 3 μV p-p @ 0.1 Hz to 10 Hz |
| Slew Rate | 2 V/μs @ VIN = 500 mV, G = 10 |
| Operating Temperature Range | −40°C to +125°C |
| Package Type | 8-lead SOIC |
| Quiescent Current | 2.7 mA to 3.5 mA |
Key Features
- Rail-to-Rail Input and Output: The AD8230 offers a 16 V rail-to-rail common-mode input range, making it suitable for noisy environments with varying ground potentials.
- Auto-Zeroing Topology: Reduces offset voltage drift to less than 50 nV/°C, minimizing input and output transients typical of commutating or chopper instrumentation amplifiers.
- High CMRR: Minimum of 110 dB @ 60 Hz, G = 10 to 1000, which rejects line noise effectively.
- Low Frequency Noise: Minimal 3 μV p-p noise from 0.1 Hz to 10 Hz, ensuring high dc precision.
- Resistor Programmable Gain: Gain can be programmed between 101 and 1000 using two external resistors, ensuring high gain stability.
- Extended Temperature Range: Maintains performance over −40°C to +125°C, making it suitable for industrial applications.
Applications
- Pressure Measurements: Suitable for precision pressure measurement applications due to its high accuracy and stability.
- Temperature Measurements: Ideal for thermocouple and other temperature sensing applications.
- Strain Measurements: Used in strain gauge and bridge transducer applications requiring high precision.
- Automotive Diagnostics: Applicable in automotive diagnostic systems where high accuracy and noise rejection are crucial.
Q & A
- What is the supply voltage range for the AD8230YRZ?
The AD8230YRZ operates on ±4 V to ±8 V (dual supplies) and 8 V to 16 V (single supply).
- What is the gain range of the AD8230YRZ?
The gain can be programmed between 101 and 1000 using external resistors.
- What is the input offset voltage of the AD8230YRZ?
The maximum input offset voltage is 10 μV (RTI, ±5 V operation).
- How does the AD8230YRZ handle temperature variations?
The AD8230YRZ maintains its performance over an extended temperature range of −40°C to +125°C.
- What is the common mode rejection ratio (CMRR) of the AD8230YRZ?
The CMRR is a minimum of 110 dB @ 60 Hz, G = 10 to 1000.
- What is the low frequency noise of the AD8230YRZ?
The low frequency noise is minimal at 3 μV p-p from 0.1 Hz to 10 Hz.
- What is the slew rate of the AD8230YRZ?
The slew rate is 2 V/μs @ VIN = 500 mV, G = 10.
- In what package is the AD8230YRZ available?
The AD8230YRZ is available in an 8-lead SOIC package.
- What are some typical applications of the AD8230YRZ?
Typical applications include pressure measurements, temperature measurements, strain measurements, and automotive diagnostics.
- How does the auto-zeroing topology benefit the AD8230YRZ?
The auto-zeroing topology reduces offset voltage drift to less than 50 nV/°C and minimizes input and output transients.
