ISL3685IR96 Intersil, ISL3685IR96 Datasheet

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ISL3685IR96

Manufacturer Part Number
ISL3685IR96
Description
Manufacturer
Intersil
Datasheet

Specifications of ISL3685IR96

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ISL3685IR96
Manufacturer:
INTERSIL
Quantity:
900
Part Number:
ISL3685IR96
Manufacturer:
INTERSIL
Quantity:
20 000
2.4GHz RF/IF Converter and Synthesizer
a low noise, gain selectable amplifier (LNA) followed by a
down-converter mixer. An up-converter mixer and a high
performance preamplifier compose the transmit chain. The
remaining circuitry comprises a high frequency Phase
Locked Loop (PLL) synthesizer with a three wire
programmable interface for local oscillator applications.
A reduced filter count is realized by multiplexing the receive
and transmit IF paths and by sharing a common differential
matching network. Furthermore, both transmit and receive
RF amplifiers can be directly connected to mixers as
bandwidth characteristics attenuate image frequencies. The
inherent image rejection of both the transmit and receive
functions allows this economic advantage.
The ISL3685 is housed in a 44 lead MLFP package well
suited for PCMCIA board and MINI PCI applications.
Ordering Information
Simplified Block Diagram
INTERFACE
ISL3685IR
ISL3685IR96
PART NUMBER
TXA_OUT
REF_IN
CP_DO
RX_IN
TEMP RANGE
-40 to 85
-40 to 85
MODULE
The ISL3685 is a monolithic SiGe
half duplex RF/IF transceiver
designed to operate in the 2.4GHz
ISM band. The receive chain features
(
PLL
o
C)
TM
1
1-888-INTERSIL or 321-724-7143
44 Ld MLFP
Tape and Reel
Data Sheet
PACKAGE
PRISM® is a registered trademark of Intersil Americas Inc. PRISM and design is a trademark of Intersil Americas Inc.
L44.7x7
RX_MX_OUT
LO_IN
TX_MX_IN
PKG. NO
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
|
Intersil and Design is a trademark of Intersil Americas Inc.
Features
• Highly Integrated
• Multiplexed RX/TX IF Path prescribes Single IF Filter
• Programmable Synthesizer
• Gain Selectable LNA
• Power Management/Standby Mode
• Single Supply 2.7V to 3.3V Operation
Cascaded LNA/Mixer (High Gain)
• Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25dB
• SSB Noise Figure. . . . . . . . . . . . . . . . . . . . . . . . . . . 3.7dB
• Input IP3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -12dBm
• IF Frequency . . . . . . . . . . . . . . . . . . . 280MHz to 600MHz
Cascaded LNA/Mixer (Low Gain)
• Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -9dB
• Input P1dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +2.5dBm
• IF Frequency . . . . . . . . . . . . . . . . . . . 280MHz to 600MHz
Cascaded Mixer/Preamplifier
• Transmit Cascaded Mixer/Preamplifier Gain . . . . . . .25dB
• SSB Noise Figure. . . . . . . . . . . . . . . . . . . . . . . . . . . .10dB
• Output P1dB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4dBm
• IF Frequency . . . . . . . . . . . . . . . . . . . 280MHz to 600MHz
Applications
• IEEE802.11 1Mbps and 2Mbps Standard
• Systems Targeting IEEE802.11, 11Mbps Standard
• Wireless Local Area Networks
• PCMCIA Wireless Transceivers
• ISM Systems
• TDMA Packet Protocol Radios
• MINI PCI Wireless Transceivers
January 2001
|
File Number
Copyright © Intersil Americas Inc. 2000
ISL3685
4860.2

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ISL3685IR96 Summary of contents

Page 1

... The ISL3685 is housed lead MLFP package well suited for PCMCIA board and MINI PCI applications. Ordering Information TEMP RANGE o PART NUMBER ( C) PACKAGE ISL3685IR - MLFP ISL3685IR96 - Tape and Reel Simplified Block Diagram RX_IN CP_DO INTERFACE PLL MODULE REF_IN TXA_OUT 1 1-888-INTERSIL or 321-724-7143 ...

Page 2

Pinout LNA_VCC1 GND RX_IN BIAS1_VCC1 PE2 PE1 TX_VCC1 GND TXA_OUT GND Pin Description PIN NAME 1 LNA_VCC1 Low Noise Amplifier Positive Power Supply. 3 RX_IN Low Noise Amplifier RF Input, internally DC coupled and requires an external blocking capacitor. A ...

Page 3

Pin Description (Continued) PIN NAME 19 REF_IN Synthesizer Reference Frequency Input, internally DC coupled and requires an external AC coupling capacitor. 20 SYN_VCC2 Synthesizer Positive Power Supply. 21 CP_VCC2 Synthesizer Charge Pump Positive Power Supply. 22 CP_DO Synthesizer Charge Pump ...

Page 4

... NOTE measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See JA Intersil TB379. General Electrical Specifications PARAMETER Supply Voltage Receive Total Supply Current (LNA in High Gain) ...

Page 5

Cascaded LNA/Mixer AC Electrical Specifications PARAMETER LNA Input 50 VSWR with Match Network LO VSWR (Direct) Differential IF Output Load IF Output Capacitance (Single Ended) IF Output Resistance (Single Ended LNA Input Feedthrough (Cascaded, no Filter) Gain Switching ...

Page 6

Phase Lock Loop Electrical Specifications PARAMETER Reference Oscillator Sensitivity, CMOS Inputs, Single Ended or Complementary Reference Oscillator Duty Cycle Charge Pump Sink/Source Current/Tolerance Charge Pump Sink/Source Current/Tolerance Charge Pump Sink/Source Current/Tolerance Charge Pump Sink/Source Current/Tolerance Charge Pump Sink/Source Mismatch Charge ...

Page 7

Reference Frequency Counter/Divider BIT R(0-14) Least significant bit R(0) to most significant bit R(14) of the divide by R counter. The Reference signal frequency is divided down by this counter and is compared with a divided phase ...

Page 8

DATA BIT 20: MSB BIT 19 CLOCK NOTES: 8. Parenthesis data indicates programmable reference divider data. 9. Data shifted into register on clock rising edge. 10. Data is shifted in MSB first ...

Page 9

ISL3685 Evaluation Schematic Diagram LNA_OUT R3 100k LNA_IN LNA_HL GP1 R4 R6 100k 100 PE2 GP2 PRE_OUT PE1 GP3 R5 100k NOTES: L23 is 807 mils from edge of SMA pad to center of component pad. C26 is 381 mils ...

Page 10

L23 RX_MIX_IN 1.2NH C25 220pF R MX OUT IN GND DRIVER VCC 30 LO VCC DRIVER VCC VCC2+ 25 TX_MX_OUT ...

Page 11

Typical Performance Curves V = 3.30V 1.7GHz TO 3.0GHz ROOM TEMP Pin = -30.dBm NO MATCH NETWORK Marker 1 = 1.7GHz, Real = 16.7 , Imaginary = -31.8 Marker 3 = 2.45GHz, Real = ...

Page 12

Typical Performance Curves V = 3.30V 2.0GHz TO 3.0GHz ROOM TEMP Pin = -30.dBm NO MATCH NETWORK Marker 1 = 1.7GHz, Real = 19.2 , Imaginary = -26.1 Marker 3 = 2.45GHz, Real ...

Page 13

Typical Performance Curves V = 3.30V 2.0GHz TO 3.0GHz ROOM TEMP Pin = -30dBm NO MATCH NETWORK 5 3 Marker 1 = 1.7GHz, Real = 18.6 , Imaginary = -84.7 Marker 3 = 2.45GHz, Real = 13.0 ...

Page 14

Typical Performance Curves SCALE 10dB/DIV 3.30V 2.0GHz TO 3.0GHz ROOM TEMP Pin = -30.dBm Marker 1 = 1.7GHz, -46.2dB Marker 3 = 2.45GHz, -30.7dB Marker 5 = 3.0GHz, -32.8dB FIGURE 15. S12 TX ...

Page 15

Typical Performance Curves TYPICAL APPLICATION, o TEMP = 85 C 2.7V GAIN 1dB/DIV. NF 1dB/DIV. 3.3V GAIN AT CURSOR -19.5dB AT 2.7V, -19.2dB AT 3.3V NOISE FIGURE AT CURSOR 20.2dB AT 2.7V, 19.4dB AT 3.3V RF 2.4GHz FIGURE 19. LNA ...

Page 16

Typical Performance Curves V = 3.0V CC ROOM TEMPERATURE = AMBIENT 172ns FIGURE 25. GAIN SWITCHING SPEED AT FULL SCALE LNA LOW TO HIGH AT BASEBAND 0.5mA/DIV * -40 ...

Page 17

Typical Performance Curves 0.1dB/DIV * * -40 - TEMPERATURE DEGREES ( FIGURE 31. INPUT P1dB HIGH GAIN MODE * 0.5dB/DIV -40 -30 -20 - ...

Page 18

Typical Performance Curves * * -40 -30 -20 - TEMPERATURE DEGREES ( FIGURE 37. POWER CONVERSION GAIN * * V ...

Page 19

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. How- ever, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. ...

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