1FEATURES

2• Renewable Energy Grade

Unless Otherwise noted, Typical values at

VS = 5V

• Input Offset Voltage ±200 μV (max)

• Input Bias Current ±200 fA

• Input Voltage Noise 9 nV/√Hz

• CMRR 130 dB

• Open Loop Gain 130 dB

• Temperature Range −40°C to 125°C

• Unity Gain Bandwidth 2.5 MHz

• Supply Current (SM72501) 715 μA

• Supply Voltage Range 2.7V to 12V

• Rail-to-rail Input and Output

APPLICATIONS

• High Impedance Sensor Interface

• Battery Powered Instrumentation

• High Gain Amplifiers

• DAC Buffer

• Instrumentation Amplifier

• Active Filters

DESCRIPTION

The SM72501 is a low offset voltage, rail-to-rail input

and output precision amplifier with a CMOS input

stage and a wide supply voltage range. The

SM72501 is ideal for sensor interface and other

instrumentation applications.

The low offset voltage of less than ±200 μV along

with the low input bias current of less than ±1 pA

makes the SM72501 ideal for precision applications.

The SM72501 is built utilizing VIP50 technology,

which allows the combination of a CMOS input stage

and a 12V common mode and supply voltage range.

This makes the SM72501 a great choice in many

applications where conventional CMOS parts cannot

operate under the desired voltage conditions.

The SM72501 has a rail-to-rail input stage that

significantly reduces the CMRR glitch commonly

associated with rail-to-rail input amplifiers. This is

achieved by trimming both sides of the complimentary

input stage, thereby reducing the difference between

the NMOS and PMOS offsets. The output of the

SM72501 swings within 40 mV of either rail to

maximize the signal dynamic range in applications

requiring low supply voltage.

The SM72501 is offered in the space saving 5-Pin

SOT-23. This small package is an ideal solution for

area constrained PC boards and portable electronics.