A/D converter subsystem with half linear buffer amplifier

Details A/D converter subsystem with half linear buffer amplifier A/D converter subsystem with half linear buffer amplifier

1995-08-24

1996-10-22

Gaffin, Jeffrey A.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341159, 330252, H03F 345

Patent

active

055681492

ABSTRACT:
Differential signals are linearly amplified in a differential amplifier (16) and provided to a large dynamic range A/D converter (11). The differential amplifier (16) is optimized for linear performance for positive output signals at the expense of negative output signals. The A/D converter subsystem (10) provides up to a ten or twelve bit output and is fabricated on a single monolithic chip. A ten to twenty dB improvement in linearity is achieved over discrete designs. Power consumption is significantly reduced by operating the amplifiers over lower voltage ranges. The integration of an entire A/D subsystem (10) including high level amplification is achieved on a single chip.

REFERENCES:
patent: 4393368 (1983-07-01), Rasmussen
patent: 5307024 (1994-04-01), Metz et al.
patent: 5309157 (1994-05-01), Yee

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