Design of a minimum power, low-voltage supply fully-di erential

hyseresis

Design of a minimum power, low-voltage supply fully-differential
/ r4 g2 r+ g* O9 ^2 D' N* m" W" Otransconductance amplier for A/D converters
% S+ N. T( p+ N" ]( W
Berkeley大學的,有電路圖W/L值,模擬圖,手算公式很詳盡
給大家參考
( O+ W2 `* Y8 I' U$ ?Abstract_Two designs of a fully dierential
- g- d( C! d5 O) i" N4 @/ ?transconductance amplier to be used in a rst stage
9 j1 t7 L5 }3 l7 g& j& Q  P% B/ R& Bof a pipelined 13-Bit A/D converter are developed
3 d' S! `, ]3 x: M% n! Vand presented. A three stage amplier achieves the
lowest power design. The dynamic range specication
is met according to the expression for noise power
" @, V3 O1 P) h; W, Z1 }indicated in the design specication sheet. In this
: k$ m  E4 p, h" Treport, anyway, we show that such expression is in-
correct for a Miller compensated topology. A sec-
$ Z9 T! B/ s% ]- L9 Lond design is developed to meet the specications ac-
- E: b6 K# l; q9 n6 o  l" _  u' {cording to a more accurate expression of the noise
power. Much higher power consumption is obtained
2 A% d# D* M' ]4 n+ `even from an optimized design. Miller compensation
5 i8 A0 F$ s1 `techniques are inferred to be inadequate to address
low-noise low-power specications.