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Mitsumi Electronics |
MITSUMI
Flame Detection Amplifier
Monolithic IC MM1217
Flame Detection Amplifier MM1217
www.DataSheet4U.com
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)
2. Current consumption
3. Power supply line elimination ratio
Amplifier section
1. Low input offset voltage
2. Low input offset voltage drift (-20°C~+75°C)
3. Input offset current
4. Input bias current
5. Gain (Open roop)
Comparator Section
1. Input offset voltage
2. Low input offset voltage drift (-20°C~+75°C)
3. Input bias current
4. Output sink current
Reference Voltage Section
1. Reference voltag
2. Reference voltage temperature characteristics
3. Output current
Package
SOP-8C (MM1217XF)
SIP-9A (MM1217XS)
VCC=1.8V~6V
(It is available to operate by two dry cell batteries.)
0.1mA typ.
60dB typ.
±0.1mV typ.
±1.0µV/°C typ.
1nA typ.
50nA typ.
100dB typ.
±1.0mV typ.
±10µV/°C typ.
±25nA typ.
5mA min.
1.27V±0.05V
±100ppm/°C typ.
0.3mA min.
Applications
1. Gas burners
2. Instantaneous gas water heaters
MITSUMI
Pin Assignment
MM1217XF
8765
1234
MM1217XS
SOP-8C
123456789
SIP-9A
Flame Detection Amplifier MM1217
www.DataSheet4U.com
Pin No.
1
2
3
4
5
6
7
8
9
Pin Function
MM1217XF
MM1217XS
AIN+
AIN+
AIN-
AIN-
AOUT
AOUT
GND
COMPIN+
COMPIN-
GND
VS COMPIN-
COMPOUT
VS
VCC COMPOUT
- VCC
Pin Function (SOP-8C)
Pin No. Pin Function Internal Equivalent Circuit Pin No.
Pin Function
Internal Equivalent Circuit
1 AIN+
5 COMPIN-
2 AIN-
6 VS
3 AOUT
7 COMPOUT
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