English 
MinebeaMitsumi MM1217 integrates an operational amplifier and a comparator, achieving extremely low offset voltage while operating from a single power supply. The use of a single supply allows the device to operate from the voltage provided by two batteries. By combining the operational amplifier and the comparator, the IC can amplify the electromotive force of a thermocouple and detect ignition based on the amplifier’s output, without requiring additional external components. The low offset voltage significantly improves the accuracy of ignition detection.
MM1217 features :
(Unless otherwise specified, Topr = +25 °C)
General Characteristics
Power supply voltage: 1.8 to 6.0 V (suitable for battery-powered applications)
Current consumption: 0.1 mA typ.
Power supply rejection ratio (PSRR): 60 dB typ.
Amplifier Section
Input voltage range: −0.2 to 0.3 V
Input offset voltage: ±0.1 mV typ.
Voltage gain: 100 dB typ.
Comparator Section
Input voltage range: 0 to VCC − 1.0 V
Input offset voltage: ±0.1 mV typ.
MM1217 application :
- Equipment requiring flame detection, such as gas stoves and water heaters
- Amplification and detection of very low voltage
| Power supply voltage [V] | Amplifier input voltage range [V] | Amplifier input offset voltage typ.[mV] | Comparator input voltage range [V] | Comparator input offset voltage typ. [mV] | Package |
| 1.8 ～ 6.0 | -0.2 ~ 0.3 | ±0.1 | 0 ~ VCC-1.0 | ±0.1 | SOP-8D |
MinebeaMitsumi flame detection amplifiers are made in Japan and are of the highest quality. They will be perfectly suited for your applications.