A Bandwidth Enhanced Transimpedance Amplifier with Improved Noise Performance |
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Authors: | Filip Tavernier Michiel Steyaert |
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Affiliation: | (1) Kasteelpark Arenberg 10, 3001 Heverlee, Belgium |
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Abstract: | A new TIA topology with enhanced bandwidth is presented in this paper. By adding an extra capacitive feedback loop to the
resistive feedback TIA, bandwidth and sensitivity are increased without sacrificing the low power consumption. It is shown
that this topology is superior to the self-compensated TIA when the photodiode is integrated on the same die as the TIA. An
implementation is presented that boosts the bandwidth by a factor of 9 and reduces the noise by a factor of 4.2 for a photodiode
capacitance of 106 pF, the parasitic capacitance of a POF-compliant 1 mm integrated photodiode in 130 nm CMOS. |
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