Universal Instrumentation Amplifier Module for VSSOP8 Package with On-Board Reference

This is a universal instrumentation amplifier module that can be used to develop and test instrumentation amplifier circuits. The board can accommodate VSSOP8 devices such as INA126, INA333, INA155, INA156 from Texas Instruments. All capacitors are ceramic type with size 0805 and resistor size is also 0805. It supports dual supply or single supply. You should install R8 0 Ohms for a single supply usage. Various capacitors and resistors can be installed as per application requirements. D1 Power LED. Board has also a 2.5V precision reference voltage chip. Jumper J1 is provided to select the 2.5V reference voltage to the INA333 Amplifier. An external reference voltage can be fed through CN1 Pin 2. In this case Open Jumper J1. Also, a small prototyping area is provided.

Features

• Single Supply 5V DC for INA333 (Range 1.8V to 5.5V), Single Supply: 4.5 V to 36 V, Dual Supply: ±2.25 V to ±18 V
• On Board Reference Voltage Generator Chip (Available Reference 2.5V, 5V, 1.2V)
• On Board Power LED
• On Board Jumper J1 for Reference Voltage Selection, External or Internal
• Header Connector for Inputs, Outputs, and Supply
• Small Prototype Area Provided
• Gain Adjustable 1 to 1000 Using Multiturn Trimmer Potentiometer
• PCB Dimensions 37.15 x 19.21 mm

Applications

• Bridge Amplifiers
• ECG Amplifiers
• Pressure Sensors
• Medical Instrumentation
• Portable Instrumentation
• Weigh Scales
• Thermocouple Amplifiers
• RTD Sensor Amplifiers
• Data Acquisition

Connections and Other Details

• CN 1: Pin 1=VCC, Pin2=2.5V Ref Out, Pin3=Signal -Input, Pin4=GND, Pin5=Signal +input, Pin6=-VEE
• PR1: Gain Adjust Multiturn Pot 1 To 1000
• D1: Power LED
• Jumper J1: Internal Reference 2.5V Selection, Open for External Reference Input
• U1: Reference Voltage Generator 2.5V Output
• Resistor R8: Use 0Ohms for Single Supply, Open for Dual Supply Input