论文信息 - 3.3-V, 200-Ms/s BiCMOS comparator for current-mode interpolation using a transconductance stage

3.3-V, 200-Ms/s BiCMOS comparator for current-mode interpolation using a transconductance stage

This paper presents the design of a low-power, low-voltage latched comparator, suitable for current-mode interpolation, using transconductors instead of current mirrors. Thanks to this approach, higher immunity to device mismatch and overall improved dynamic performance were achieved. The proposed comparator was integrated in a 0.8 /spl mu/m bipolar complementary metal-oxide-semiconductor technology and implemented in a 200 Ms/s analog/digital converter with 8 bit resolution on a 1 V differential range at 3.3 V supply.

A. Boni | C. Morandi | G. Melcher

[1] Asad A. Abidi,et al. A 10-b, 75-MHz two-stage pipelined bipolar A/D converter , 1993 .

[2] A. Boni,et al. Harmonic distortion in high-speed differential A/D converters , 1998 .

[3] M. Nakamura,et al. An 8 bit, 100 ms/s flash ADC , 1984, IEEE Journal of Solid-State Circuits.

[4] A. Boni,et al. Current-mode BiCMOS comparator for interpolated, high speed, low voltage A/D converters , 1996, Proceedings of the 1996 BIPOLAR/BiCMOS Circuits and Technology Meeting.

[5] H. Reyhani,et al. A 5 V, 6-b, 80 Ms/s BiCMOS flash ADC , 1994 .

[6] F. O. Eynde,et al. A high-speed CMOS comparator with 8-b resolution , 1992 .

[7] B. A. Wooley,et al. An 8 bit, 200 MHz BiCMOS comparator , 1989, Symposium 1989 on VLSI Circuits.

[8] B. Peetz,et al. An 8-bit 250 megasample per second analog-to-digital converter: operation without a sample and hold , 1986 .

[9] A. Boni,et al. A Current Mirroring BiCMOS Comparator for Low-Voltage, Low-Power Applications , 1996, ESSCIRC '96: Proceedings of the 22nd European Solid-State Circuits Conference.

[10] Christofer Toumazou,et al. Analogue IC design : the current-mode approach , 1993 .

[11] Bruce A. Wooley,et al. An 8-bit 200-MHz BiCMOS comparator , 1990 .