MITSMI MM1217XF, MM1217XS Datasheet
MITSUMI
Flame Detection Amplifier MM1217
Flame Detection Amplifier
Monolithic IC MM1217
Outline
This IC is comprised of an operation amplifier, a comparator, and a reference power source. It is worthy of
note that the input offset voltage and the input offset voltage temperature drift of this operation amplifier are
one digit less than those of conventional products regardless of the single power supply. Formerly, offset
voltage adjustment was required for flame detection using a thermocouple on gas appliances, but with this IC
adjustment is not required.
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 (single batteries) V
2. Current consumption 0.1mA typ.
3. Power supply line elimination ratio 60dB typ.
CC=1.8V~6V
(It is available to operate by two dry cell batteries.)
Amplifier section
1. Low input offset voltage ±0.1mV typ.
2. Low input offset voltage drift (
3. Input offset current 1nA typ.
4. Input bias current 50nA typ.
5. Gain (Open roop) 100dB typ.
Comparator Section
1. Input offset voltage ±1.0mV typ.
2. Low input offset voltage drift (
3. Input bias current ±25nA typ.
4. Output sink current 5mA min.
Reference Voltage Section
1. Reference voltag 1.27V±0.05V
2. Reference voltage temperature characteristics ±100ppm/°C typ.
3. Output current 0.3mA min.
-
20°C~+75°C) ±1.0µV/°C typ.
-
20°C~+75°C) ±10µV/°C typ.
Package
SOP-8C (MM1217XF)
SIP-9A (MM1217XS)
Applications
1. Gas burners
2. Instantaneous gas water heaters
MITSUMI
1432
8567
SOP-8C
SIP-9A
13 6824579
Pin Assignment
MM1217XF
Flame Detection Amplifier MM1217
MM1217XS
Pin Function
(SOP-8C)
Pin No. Pin Function
Pin No.
1 A
2 A
3 AOUT AOUT
4 GND COMPIN+
5 COMP
6 V
7 COMPOUT VS
8 VCC COMPOUT
9
Internal Equivalent Circuit
Pin Function
MM1217XF MM1217XS
IN+AIN+
IN
-
IN
-
S COMPIN
-
Pin No. Pin Function
AIN
-
GND
-
VCC
Internal Equivalent Circuit
1 AIN+ 5 COMPIN
2 AIN
-
6 VS
3 AOUT 7 COMPOUT
-
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