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A 14-bit 20-Msamples/s pipelined A/D converter with class A/B SiGe amplifier

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3 Author(s)
Kinyua, M. ; Texas Instruments Inc., 12500 TI Blvd, MS 8755, Dallas, TX 75243 ; Maloberti, F. ; Gosney, W.

This paper describes a 14-bit 20MSPS switched-capacitor pipelined ADC designed in a complementary SiGe/SOI bipolar process. It features an input-to-output class A/B operational amplifier designed to drive large sampling capacitors of 10pF without consuming excessive power. Prototype implementation exhibits measured INL of +/- 2.0 LSB, DNL of +/- 0.5 LSB, SNR of 73 dB and SFDR of 85 dB with a 2MHz input signal. Analog power dissipation at lowest amplifier bias setting is 390mW with 5V supply.

Published in:

Electrical and Electronics Engineering, 2004. (ICEEE). 1st International Conference on

Date of Conference:

8-10 Sept. 2004