Intersil ICL7139
the ICL7139 and ICL7149 always display the result of a conversion on the correct range. The unit will autorange between the four different ranges.DESCRIPTION
The Intersil ICL7139 and ICL7149 are high performance, low power, auto-ranging digital multimeter lCs. Unlike other autoranging multimeter ICs, There is no “range hunting” noticeable in the display. A manual switch is used to select the 2 high group ranges. DC current ranges are 4mA and 40mA in the low current group, and 400mA and 4A in the high current group. Resistance measurements are made on 4 ranges, which are divided into two groups. The low resistance ranges are 4/40kΩ . The high resistance ranges are 0.4/4MΩ . Resolution on the lowest range is 1Ω .FEATURES
● 13 Ranges - ICL7139 - 4 DC Voltage 400mV, 4V, 40V, 400V - 1 AC Voltage 400V - 4 DC Current 4mA, 40mA, 400mA, 4A - 4 Resistance 4kΩ , 40kΩ , 400kΩ , 4MΩ● 18 Ranges - ICL7149 - 4 DC Voltage 400mV, 4V, 40V, 400V - 2 AC Voltage with Optional AC Circuit - 4 DC Current 4mA, 40mA, 400mA, 4A - 4 AC Current with Optional AC Circuit - 4 Resistance 4kΩ , 40kΩ , 400kΩ , 4MΩ
● Autoranging - First Reading is Always on Corre...