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计量、检测电路

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计量专用芯片
型号 名称及主要特点 工作电压 封装
SFM7721 自动量程数字多用电表专用电路,最大显示4000,转换速率3 次/秒。
4000 counts auto range DMM IC,max. display:4000 counts(3
3/4digits),conversion rate:3 times/sec
2.4 ~ 3.6V DIE78
QFP100
SFM7752 自动量程数字多用电表专用电路,最大显示2000,转换速率3 次/秒。
2000 counts auto range DMM IC , max. display:2000 counts(3
3/4digits),conversion rate:3 times/sec
2.4 ~ 3.6V DIE64
LQFP64
SFM2132 可编程光电烟雾检测电路
Programmable Smoke Detector Controller
8 ~ 45V SOP14
SOP16
SFM7106 万用表专用带LCD 显示驱动的三位半 A/D 转换电路
3-1/2 A/D Converter with LCD Display Driver
9V(typ.) DIE44
DIP40
QFP44
LQFP44
SFM7107 万用表专用带LED显示驱动的三位半 A/D 转换电路
3-1/2 A/D Converter with LED Display Driver
9V(typ.) DIP40
QFP44
SFM7108 万用表专用带串行输出的三位半 A/D 转换电路
3-1/2 A/D Converter with Serial Data Output
9V(typ.) DIE50
LQFP48L
SFM7124 万用表专用带LCD显示驱动的三位半 A/D 转换电路
3-1/2 A/D Converter with LCD Display Driver
2.5~6V DIE45
DIP40
QFP44
LQFP44
SFM7126 万用表专用带LCD 显示驱动的三位半 A/D 转换电路
3-1/2 A/D Converter with LCD Display Driver
9V(typ.) DIE62
SFM7193 三位半带LCD显示驱动的电子体温计电路
3-1/2Bit electronic thermometer IC with LCD driver
1.3 ~ 1.65V DIE43
SFM7196 带 LCD 显示驱动的电子体温计电路
Electronic thermometer IC with LCD driver
1.5V(typ.)   DIE43
LD2708 高准确度功率测量且内置晶体振荡器的集成电路,输出频率表示平均有功功率,还可直接驱动电机计数器和两相步进电机
Integrated circuit with high accuracy power measurement and built-in crystal oscillator,the output frequency represents the average active power, and it can also directly drive the motor counter and two phase stepping motor.
5V SOP8
LD7708B 高准确度功率测量且内置晶体振荡器的集成电路,输出频率表示平均有功功率,还可直接驱动电机计数器和两相步进电机
Integrated circuit with high accuracy power measurement and built-in crystal oscillator,the output frequency represents the average active power, and it can also directly drive the motor counter and two phase stepping motor.
5V SOP8
LD7209
三个通道sigma-delta 模-数转换器(ADC)功率测量电路,可精确测量和计算电压、电流、有功功率、无功功率、视在功率等电能参数
Three-channel sigma-delta analog-to-digital converter (ADC) power measurement circuit, which can accurately measure and calculate voltage, current, active power, reactive power, apparent power and other electrical parameters
3.3V/5V SSOP24

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