MITSMI MM1380 Datasheet
MITSUMI
1432
8567
VSOP-8A
Sense Current Amplifier MM1380
Sense Current Amplifier
Monolithic IC MM1380
Outline
This IC improves on the previous sensor amp MM1089 (Dual). It is a single amp that allows current sensing
regardless of the IC power supply (V
fluctuation rejection ratio have been improved, and gain is switched between 50 and 100 times.
Features
(1) Common mode signal rejection ratio (CMRR1.1kHz) 100dB typ.
(2) Power supply fluctuation rejection ratio (PSRR1.1kHz) 80dB typ.
(3) Operating power supply voltage range +3 ~ +24V
(4) Consumption current 150µA typ.
(5) Voltage gain 50/100 times switching
(6) Input equivalent offset voltage ±0.5mV
(7) Current detection High/Low switching
(8) Single type
CC). Further, the common mode signal rejection ratio and power supply
Package
Package
VSOP-8A
Applications
(1) Notebook PCs
(2) PDA
Pin Assignment
1 ISEL
2 IN
3 IN+
4 GND
5 COM
6 OUT
7 V
8 GSEL
-
CC
MITSUMI
Sense Current Amplifier MM1380
Pin Description
Pin No. Pin name Functions Internal equivalent circuit
1 ISEL Input selection switch terminal
Input common mode voltage range
ISEL="H" : from 1.8V to 24V
ISEL="L" : from
4 GND Ground terminal
2 IN
3 IN+ Non-Inverted input terminal
5 COM Reference voltage input terminal
6 OUT Output terminal
7 VCC Supply voltage terminal
-
Inverted input terminal
-
0.3V to VCC-2.4V
8 GSEL Gain selection switch terminal
Voltage gain
GSEL="H" : Gv=100
GSEL="L" : Gv=50
MITSUMI
Block Diagram
Absolute Maximum Ratings
Sense Current Amplifier MM1380
Item Symbol Ratings Units
Storage temperature T
Supply voltage V
CCmax.
Input terminal voltage V
Allowable loss Pd 300 mW
Recommended Operating Conditions
Item Symbol Ratings Units
Operating temperature T
Operating voltage V
STG
Imax.
OPR
CC +3~+24 V
-
40~+125 °C
-
0.3~+25 V
-
0.3~+25 V
-
20~+85 °C
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