Overview
The AD625JN is a precision instrumentation amplifier produced by Analog Devices Inc. It is designed to meet the requirements of circuits needing nonstandard gains and those requiring a low-cost, precision software-programmable gain amplifier. The AD625JN offers high precision, low noise, and high common-mode rejection ratio (CMRR), making it an ideal solution for various industrial and commercial applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| User Programmed Gains | 1 to 10,000 | |
| Low Gain Error | 0.02% Max | |
| Gain Temperature Coefficient (TC) | 5 ppm/°C Max | |
| Nonlinearity | 0.001% Max | |
| Input Offset Voltage | 25 µV | |
| Noise at 1 kHz RTI | 4 nV/√Hz | |
| Gain Bandwidth Product | 25 MHz | |
| Package Types | 16-Lead Ceramic or Plastic DIP, 20-Terminal LCC | |
| Temperature Range | 0°C to +70°C (Commercial), -40°C to +85°C (Industrial), -55°C to +125°C (Extended) | |
| Power Supply Range | ±6 to ±18 V | |
| Quiescent Current | 3.5 to 5 mA |
Key Features
- High precision with user-programmed gains from 1 to 10,000 using three external resistors.
- Low gain error and gain temperature coefficient, ensuring stable performance over temperature variations.
- Low nonlinearity and input offset voltage, contributing to high accuracy in measurements.
- Low noise of 4 nV/√Hz at 1 kHz, enhancing signal integrity.
- High CMRR, independent of feedback resistor matching.
- Software programmable gain amplifier capability with 12-bit precision using a CMOS multiplexer and resistor network.
- Excellent AC performance with a 25 MHz gain bandwidth product, 5 V/µs slew rate, and 15 µs settling time.
- Totally independent input and output offset nulling terminals for high precision applications.
Applications
- Circuits requiring nonstandard gains not easily achievable with other instrumentation amplifiers.
- Low-cost, precision software-programmable gain amplifier applications.
- Industrial automation and control systems.
- Medical instrumentation and diagnostic equipment.
- Aerospace and defense applications requiring high precision and reliability.
- Smart Industry and Electrification applications where precise signal conditioning is necessary.
Q & A
- What are the user-programmed gain ranges of the AD625JN?
The AD625JN allows user-programmed gains from 1 to 10,000 using three external resistors.
- What is the maximum gain error of the AD625JN?
The maximum gain error of the AD625JN is 0.02%.
- What is the gain temperature coefficient (TC) of the AD625JN?
The gain TC of the AD625JN is 5 ppm/°C Max.
- What is the input offset voltage of the AD625JN?
The input offset voltage of the AD625JN is 25 µV.
- What is the noise level of the AD625JN at 1 kHz?
The noise level of the AD625JN at 1 kHz is 4 nV/√Hz.
- What are the package options for the AD625JN?
The AD625JN is available in 16-Lead Ceramic or Plastic DIP and 20-Terminal LCC packages.
- What are the temperature ranges for the different grades of the AD625JN?
The AD625JN is available in commercial (0°C to +70°C), industrial (-40°C to +85°C), and extended (-55°C to +125°C) temperature ranges.
- Can the AD625JN be configured as a software-programmable gain amplifier?
Yes, the AD625JN can be configured as a software-programmable gain amplifier using a CMOS multiplexer and a resistor network, offering 12-bit precision.
- What is the gain bandwidth product of the AD625JN?
The gain bandwidth product of the AD625JN is 25 MHz.
- What is the slew rate and settling time of the AD625JN?
The AD625JN has a slew rate of 5 V/µs and a settling time of 15 µs to 0.01% for a 20 V step.
