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US 2003/0151458 A1Published application
Transimpedance amplifier and circuit including the same
AssigneePrimarion, Inc.
InventorsRobert M. Smith, C. Phillip McClay, Robert T. Carroll
Life of this patent
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Abstract
Disclosed is a four stage transimpedance amplifier having a grounded base transistor preamplifier input stage, a common emitter voltage amplifier stage, and an amplifier stage having a common collector transistor, an output buffer stage, and a bias circuit coupled to the preamplifier stage to prevent the grounded base transistor from going into saturation.
Claims17
A transimpedance amplifier comprising:
- a preamplifier stage having a grounded base transistor with its emitter coupled to an input,
- a voltage amplifier stage having a common-emitter transistor with its base coupled to the collector of the grounded base transistor,
- an amplifier stage having a first common-collector transistor with its base coupled to the collector of the common-emitter transistor,
- an output buffer stage having a second common-collector transistor providing an output at its emitter and its base coupled to the collector of the common-emitter transistor, and
- a biasing circuit coupled to the grounded base transistor providing a bias voltage that prevents the grounded base transistor from going into saturation.
2 more elements
Dependencies are inferred from the claim text.