Differential cascode magneto-resistance preamplifier with bias b

Details Differential cascode magneto-resistance preamplifier with bias b Differential cascode magneto-resistance preamplifier with bias b

1998-03-12

2000-05-23

Shingleton, Michael B

Amplifiers

With semiconductor amplifying device

Including plural stages cascaded

330252, 330261, 330296, 330310, H03G 330

Patent

active

06066987&

ABSTRACT:
A high-gain, high-bandwidth, low-noise differential common-emitter-common-base cascode preamplifier for use in the read circuitry of an MR head system includes a by-pass circuitry. Currents generated in load devices connected to the preamplifier are added to currents generated in the by-pass circuitry to provide the currents that flow through the common-emitter transistors of the preamplifier.

REFERENCES:
patent: 4621238 (1986-11-01), Fenk
patent: 4728902 (1988-03-01), Gleason et al.

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