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1. (WO2017034734) COMMON-MODE COMPENSATION TECHNIQUE FOR PROGRAMMABLE GAIN AMPLIFIERS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2017/034734 International Application No.: PCT/US2016/044064
Publication Date: 02.03.2017 International Filing Date: 26.07.2016
IPC:
H03F 3/30 (2006.01) ,H03F 3/45 (2006.01)
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
F
AMPLIFIERS
3
Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
30
Single-ended push-pull amplifiers; Phase-splitters therefor
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
F
AMPLIFIERS
3
Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
45
Differential amplifiers
Applicants:
QUALCOMM INCORPORATED [US/US]; ATTN: International IP Administration 5775 Morehouse Drive San Diego, California 92121-1714, US
Inventors:
KANAGAL RAMESH, Srinidhi Koushik; IN
HUANG, Wenchang; US
AZIN, Meysam; US
Agent:
HAMMACK, Marcus W.; US
READ, Randol W.; US
Priority Data:
14/982,61229.12.2015US
62/208,15921.08.2015US
Title (EN) COMMON-MODE COMPENSATION TECHNIQUE FOR PROGRAMMABLE GAIN AMPLIFIERS
(FR) TECHNIQUE DE COMPENSATION EN MODE COMMUN POUR AMPLIFICATEURS À GAIN PROGRAMMABLES
Abstract:
(EN) Certain aspects of the present disclosure provide methods and apparatus for adjusting a bandwidth of an amplifier (e.g., a programmable gain amplifier (PGA)). In certain aspects, the PGA generally includes at least one amplification stage (320) having an input (301) and an output (303), a plurality of compensation capacitors (Cc0, Cc1, Cc2) and at least one first switch (304, 306) configured to selectively couple at least one capacitor of the plurality of compensation capacitors between the input and the output of the at least one amplification stage. The amplifier includes at least one second switch (308, 310) configured to selectively couple the at least one capacitor to a node (CM sense) such that the at least one capacitor is coupled to only one of the output or the node, where a voltage at the node is a differential mode (DM) reference potential for the amplification stage.
(FR) Certains aspects de la présente invention concernent des procédés et un appareil permettant d'ajuster une largeur de bande d'un amplificateur (par exemple, un amplificateur à gain programmable (PGA)). Selon certains aspects, le PGA comprend généralement au moins un étage d'amplification (320) ayant une entrée (301) et une sortie (303), une pluralité de condensateurs de compensation (Cc0, Cc1, Cc2) et au moins un premier commutateur (304, 306) conçu pour coupler sélectivement au moins un condensateur de la pluralité de condensateurs de compensation entre l'entrée et la sortie dudit ou desdits étages d'amplification. L'amplificateur comprend au moins un second commutateur (308, 310) conçu pour coupler de manière sélective ledit ou lesdits condensateurs à un nœud (détection CM) de telle sorte que ledit ou lesdits condensateurs sont couplés uniquement à la sortie ou au nœud, une tension au niveau du nœud étant un potentiel de référence en mode différentiel (DM) pour l'étage d'amplification.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)