Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1988-07-19
1989-08-01
Mottola, Steven
Amplifiers
With semiconductor amplifying device
Including differential amplifier
330289, H03F 345
Patent
active
048536466
ABSTRACT:
A temperature compensated ECL gate (20) with each gate circuit resistance formed by a pair of opposite polarity temperature coefficient resistors. A first gate transistor element (Q1) and a second gate transistor element (Q2) coupled at a common emitter coupling (12) provide alternative collector current paths from high potential (V.sub.cc) through a first gate transistor collector path with collector resistance (R11,R12) and a gate transistor collector path with collector resistance (R21,R22). A current source transistor element (Q3) is coupled between the common emitter coupling (12) of the gate transistor elements and low potential (V.sub.EE) through current source resistance (R31,R32). The resistances of the ECL gate each include a positive temperature coefficient silicon first resistor (R11,R21,R31) and a negative temperature coefficient low capacitance polysilicon second resistor coupled (R12,R22,R32) in series. The sum of the resistances of the first and second resistors is selected to providing the respective circuit resistance of the ECL gate and the ratio of the resistances of the first and second resistors is selected according to the temperture characteristics of the current source voltage generator and the temperature characteristics of the first and second resistors for substantial temperature compensation of the gate current and signal voltage swing over a specified temperature range. The temperature compensating pair of opposite polarity temperature coefficient resistors is also applicable for temperature compensation at active nodes of TTL and STL circuits.
REFERENCES:
patent: 4207538 (1980-06-01), Goel
patent: 4757273 (1988-07-01), Bray
Johnson Terry J.
Luk Timwah
Aaker Mark A.
Fairchild Semiconductor Corporation
Kane, Jr. Daniel H.
Mottola Steven
Patch Lee
LandOfFree
Temperature compensated bipolar circuits does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Temperature compensated bipolar circuits, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature compensated bipolar circuits will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-133884