Circuit Enables PC-Based Voltage Measurements

Abstract: In its simplest form, the PC voltmeter consists of a 4-channel, 10-bit A/D converter (IC2) with a few passive components, connected to the PC printer port via a 25-pin male D-type connector.
Maxim > App Notes > A/D and D/A Conversion/Sampling Circuits Amplifier and Comparator Circuits
Keywords: low powered op amps, quad op amps, rail-to-rail inputs, rail-to-rail outputs, rail-to-rail op amps, opamp Apr 10, 2003

APPLICATION NOTE 1988
Circuit Enables PC-Based Voltage Measurements


Abstract:In its simplest form, the PC voltmeter consists of a 4-channel, 10-bit A/D converter (IC2) with a few passive
components, connected to the PC printer port via a 25-pin male D-type connector.

In its simplest form, the PC voltmeter of Figure 1 consists of section "A" alone: a 4-channel, 10-bit A/D converter (IC2) with a few
passive components, connected to the PC printer port via a 25-pin male D-type connector. Power is derived from pins 2 and 3, and
the cir