INA125P
นิยมใช้ในการขยาย Gain เมื่อมีแรงดัน input เป็น mV น้อยๆ ต้องการให้ออกมาเป็น V ที่มีค่ามากขึ้นเพื่อง่ายต่อการวัด
เช่น Input 100mV ขยายค่า Gain ออกมาเป็น Output 1-5V
ราคา 270 บาท
FEATURES
● LOW QUIESCENT CURRENT: 460µA
● PRECISION VOLTAGE REFERENCE:
1.24V, 2.5V, 5V or 10V
● SLEEP MODE
● LOW OFFSET VOLTAGE: 250µV max
● LOW OFFSET DRIFT: 2µV/°C max
● LOW INPUT BIAS CURRENT: 20nA max
● HIGH CMR: 100dB min
● LOW NOISE: 38nV/√Hz at f = 1kHz
● INPUT PROTECTION TO ±40V
● WIDE SUPPLY RANGE
Single Supply: 2.7V to 36V
Dual Supply: ±1.35V to ±18V
● 16-PIN DIP AND SO-16 SOIC PACKAGES
APPLICATIONS
● PRESSURE AND TEMPERATURE BRIDGE
AMPLIFIERS
● INDUSTRIAL PROCESS CONTROL
● FACTORY AUTOMATION
● MULTI-CHANNEL DATA ACQUISITION
● BATTERY OPERATED SYSTEMS
● GENERAL PURPOSE INSTRUMENTATION
DESCRIPTION
The INA125 is a low power, high accuracy instrumentation amplifier with a precision voltage reference. It
provides complete bridge excitation and precision differential-input amplification on a single integrated
circuit.
A single external resistor sets any gain from 4 to
10,000. The INA125 is laser-trimmed for low offset
voltage (250µV), low offset drift (2µV/°C), and high
common-mode rejection (100dB at G = 100). It operates on single (+2.7V to +36V) or dual (±1.35V to
±18V) supplies.
The voltage reference is externally adjustable with pinselectable voltages of 2.5V, 5V, or 10V, allowing use
with a variety of transducers. The reference voltage is
accurate to ±0.5% (max) with ±35ppm/°C drift (max).
Sleep mode allows shutdown and duty cycle operation
to save power.
The INA125 is available in 16-pin plastic DIP and
SO-16 surface-mount packages and is specified for