Semiconductor devices

Details Semiconductor devices Semiconductor devices

1985-11-07

1987-04-14

Kaplan, G. L.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204408, 204412, 204416, 204418, 307310, 307491, 324 716, 328 1, 357 25, 435817, G01N 2730

Patent

active

046576584

ABSTRACT:
A semiconductor integrated circuit for sensing a physico-chemical property of an ambient includes a pair of semiconductor devices (Q1, Q2) having a similar geometric and physical structure, one device (Q1) being sensitive to the property, the other being insensitive to the property, together with a differential amplifier (A1, A2, A3, A4, A5) having feedback connection to one of the pair of semiconductor devices.

REFERENCES:
patent: 3703650 (1972-11-01), Kendall
patent: 4385274 (1983-05-01), Shimada et al.

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