intersil ISL3680 DATA SHEET

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ISL3680

Data Sheet March 2003 FN8053

Direct Conversion Transceiver

The Intersil ISL3680 is a highly
integrated UHF2 process, direct
conversion transceiver and is part of a

2.4GHz, IEEE802.11b/g compliant radio chipset. The
ISL3680 directly interfaces with Intersil’s ISL3880 Medium
Access Controller with Integrated Baseband processor. The
addition of Intersil’s ISL3980 power amplifier and ISL3090
10GHz VCO completes a WLAN transceiver application.

Pinout

ISL3680 (QFN)

TOP VIEW

LNA_VCC
LNA_GND

LB_SHIELD

LB_LNA_IN+

LB_LNA_IN-

HB_SHIELD

HB_SHIELD_2

LB_TX_OUT+

LB_TX_OUT-

TX_GND
TX_VCC2
TX_VCC1

NC
15

LB

34

TX_AGC

PE1

14

10GHz

35

TX_BB_VCC

LO

PE2

12

13

TX_DET

36

QLO_VCC

TX_BB_GND

37

LNA_H/L

16
17
18

19
20
21
22

NC

23

NC

24
25
26
27

NC

28

LB

NC

29
30

31
32

33

TX_DET

MIXER_VCC

QLO_GND

MIXER_GND

11

38

MIXER_GND_2
10

I
2
Q

Q SELECT

LO_IN+

Q_OFFSET+

9

I SELECT

I
2

Q

40

39

LO_IN-

QLO_GND_2

Q_OFFSET­8

TX_I

TX_Q

41

BB_GND/RREF_2
7

BB_OVLD

2

REF IN

42

REF_IN

CLK

I_OFFSET+

I_OFFSET-

5

6

RX I
TX I

RX Q
TX Q

SYNTHESIZER

CP

44

43

CP_VDD

BB_AGC-

BB_AGC+

BB_GND/RREF
4

231

RX_I

RX_Q

V

SERIAL INTER.

45

474648

CP_DO

CP_GND

SYNTH_GND

BB_OVLD

REF

SYNTH_VDD

RX_I+

64

RX_I-

63

RX_AGC_GND

62

RX_AGC_VCC

61

RX_Q+

60

RX_Q-

59

1.2V_REF

58

DATA

57

TX_I+

56

TX_I-

55

LE

54

TX_Q+

53

TX_Q-

52

PRE_GND

51

PRE_VDD

50

LD/RREF

49

Features

• Highly integrated Dual Band RF to baseband solution

• Frequency of operation . . . . . . . . . . . . . . . .2.4 to 2.5GHz

• Low supply operation. . . . . . . . . . . . . . . . . . . . 2.7 to 3.3V

• Noise figure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4dB

• TX OFDM Output Power . . . . . . . . . . . . . . . . . . . . .-5dBm

• TX I/Q MTPR, PAR=12 . . . . . . . . . . . . . . . . . . . . . . -45dB

• RX Voltage gain. . . . . . . . . . . . . . . . . . . . . . . . . 0 to 74dB

• RX I/Q MTPR, PAR=12, High Gain . . . . . . . . . . . . . -35dB

• TX/RX switching speed . . . . . . . . . . . . . . . . . . . . . . .<1µS

• Direct simple interface to ISL3880

MLFP Package

• Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat No
Leads - Package Outline

• Near Chip Scale Package footprint, which improves PCB
efficiency and has a thinner profile

Applications

• PC card wireless LAN adapters

• High data rate wireless LAN systems targeting
IEEE802.11 b/g standards

• Spread spectrum Dual Band WLAN RF modems

• TDMA or CSMA packet protocol Dual Band radios

• PCI wireless LAN cards

• ISA, ISA PnP WLAN cards

Ordering Information

TEMP. RANGE

PART NUMBER

(oC) PACKAGE PKG.NO.

ISL3680IR -40 to 85 64 Ld QFN L64.9x9
ISL3680IR-TK Tape and Reel

1

Copyright © Intersil Americas Inc. 2003. All Rights Reserved. PRISM® is a registered trademark of Intersil Corporation.

PRISM logo is a trademark of Intersil Corporation. Microsoft® and Windows® are registered trademarks of Microsoft Corporation.

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143

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