SI4021 datasheet(4/35 Pages) SILABS

No de pièce	SI4021

Description	Automatic antenna tuning circuit

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Fabricant	SILABS [Silicon Laboratories]

Site Internet	http://www.silabs.com

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4 / 35 page

Si4021

4

Typical Application, Microcontroller Mode

VDD

XTL

VSS

MOD

RFN

RFP

nIRQ

VDD

FSK

X1

10MHz

GND

1

16

2

15

3

14

4

13

5

12

6

11

7

10

8

9

IA4221

GND

C3

10p

C2

100p

C1

1u

GP4

GP3

GP2

GP1

MICRO

CONTROLLER

GP0

CLKin

(EC osc. mode)

SDI

SCK

nSEL

PB1

PB2

PB3

PB4

CLK

GP5

OPTIONAL

GND

GP6

GP7

GP8

GP9

To other

circuits

Antenna

Numéro de pièce similaire - SI4021

Fabricant	No de pièce	Fiches technique	Description
Silicon Laboratories	SI4020	1Mb / 32P	Fully integrated (Iow BOM, easy design-in) No alignment required in production Fast settling, programmable, high-resolution PLL
Silicon Laboratories	SI4022	650Kb / 22P	Programmable output power level

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Description similaire - SI4021

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Zilog, Inc.	Z90T365	230Kb / 6P	Automatic frequency tuning
STMicroelectronics	STHVDAC-253MTG	672Kb / 28P	Antenna tuning circuit with turbo and glide
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Gennum Corporation	GS9010A	169Kb / 6P	Serial Digital Automatic Tuning Subsystem
NXP Semiconductors	HTOT840	72Kb / 8P	HITAGTM Antenna Tuning Device November 1996 Revision1.1

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SI4021 Fiches technique(PDF) 4 Page - Silicon Laboratories

SI4021 Fiches technique(HTML) 4 Page - Silicon Laboratories

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Description similaire - SI4021

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