MITSMI MM1278XA, MM1278XD Datasheet
MITSUMI
High Precision Operational Amplifier MM1278
High Precision Operational Amplifier
Monolithic IC MM1278
Outline
This IC is a dual-type operational amplifier, with two built-in operational amplifiers, and achieves extremely
low offset voltage with a single power supply. The input offset voltage and the input offset voltage
temperature drift of this operation amplifier are one digit less than those of our conventional products. A
single power supply can be used, so there is no need to create a mid-point potential, and it can be operated
with the voltage from two batteries. Due to the single power supply, low current consumption, and low offset
voltage, two batteries can be used for operation, making it appropriate for equipment that amplifies the very
small signal of portable equipment.
Features
General
1. Power supply voltage V
CC=1.8V~6V
optimum for drive by batteries
2. Current consumption 0.1mA typ.
3. Power supply line elimination ratio 60dB typ.
Amplifier section
1. Input voltage range
-
0.2V~+0.3V
2. Super low input offset voltage ±0.1mV typ.
3. Input offset voltage ±1µV/°C typ.
4. Input offset current 1nA typ.
5. Input bias current 50nA typ.
6. Gain 100dB typ.
Package
SOP-8D (MM1278XA)
DIP-8A (MM1278XD)
Applications
1. Amplification and detection of normal very small voltage on portable equipment.
2. Amplification of very small voltage for sensors (thermocouples, strain gauges, magnetic sensors)
3. Detedtion of very small current
MITSUMI
High Precision Operational Amplifier MM1278
Pin Assignment
MM1278XF, MM1278XD
1432
8567
SOP-8D/DIP-8A
1 AIN+
2 AIN
-
3 AOUT
4 GND
5 B
IN+
6 BIN
-
7 BOUT
8 VCC
Block Diagram
Absolute Maximum Ratings
(Ta=25°C)
Item Symbol Rating Units
Storage temperature T
STG
-
40~+125 °C
Operating temperature T
OPR
-
20~+75 °C
Power supply voltage V
CC max.
-
0.3~+10 V
Input voltage V
IN
-
0.3~+10 V
Allowable power dissipation Pd 300 mW
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