A CMOS differential buffer amplifier for ISDN applications is reported. The chip operates from a single 5 V power supply and can deliver a 6 Vpp 80 kHz signal into a load of 100 ohm and/or 300 pF with a THD of about 0 25 % The circuit main feature is its PSRR which remain practically constant from de to several hundred kHz around -75 dB for both positive and negative supplies with the common mode voltage generated ou chip. The step response at % for the same loading conditions is less than 500 nsec for a step of +1.51' and less than 1 ßsec for a step of -f-GV. By using relatively small devices at the output the amplifier occupies an area of only 1720 square mils in a 2.5 ¡mi n-well CMOS technology
"A Low-Voltage High-Drive Differential Amplifier For ISDN Applications,"
CASTELLO, RINALDO
1988-01-01
Abstract
A CMOS differential buffer amplifier for ISDN applications is reported. The chip operates from a single 5 V power supply and can deliver a 6 Vpp 80 kHz signal into a load of 100 ohm and/or 300 pF with a THD of about 0 25 % The circuit main feature is its PSRR which remain practically constant from de to several hundred kHz around -75 dB for both positive and negative supplies with the common mode voltage generated ou chip. The step response at % for the same loading conditions is less than 500 nsec for a step of +1.51' and less than 1 ßsec for a step of -f-GV. By using relatively small devices at the output the amplifier occupies an area of only 1720 square mils in a 2.5 ¡mi n-well CMOS technologyI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
