HFA3766IN Intersil Corporation, HFA3766IN Datasheet

HFA3766IN

Manufacturer Part Number

HFA3766IN

Description

Manufacturer

Intersil Corporation

Datasheet

1.HFA3766IN.pdf (11 pages)

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400MHz AGC Quadrature IF

Modulator/Demodulator

Q signals. It has a two stage integrated AGC IF ampliﬁer with

82dB of voltage gain and 76dB of gain control range.

Baseband antialiasing is integrated into the design. Four

filter bandwidths are programmable via a two bit digital

control interface. In addition, these filters are continuously

tunable over a 20% frequency range via one external

resistor. For baseband modulation digital I and Q data are

delivered to the transmit section. To achieve broadband

operation, the Local Oscillator frequency input is required

to be twice the desired frequency of modulation and

demodulation. A selectable buffered divide by 2 LO output

and a stable reference voltage are provided for convenience

of the user. The device is housed in a thin 80 lead TQFP

package well suited for PCMCIA board applications.

Simpliﬁed

PRELIMINARY

™

The HFA3766 is a highly integrated

baseband converter for quadrature

modulation applications. It features all

the necessary blocks for baseband

modulation and demodulation of I and

MOD_TX_IF_OUT

AGC1_VAGC

AGC2_VAGC

AGC1_IN

AGC_SEl

LO_GND

LO_OUT

LO_IN

2V REF

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

/90

Features

• Integrates all IF Transmit and AGC Receive Functions

• Broad Frequency Range . . . . . . . . . . 10MHz to 400MHz

• I/Q Amplitude and Phase Balance . . . . 0.2dB, 2 Degrees

• 5th Order Programmable

• 400MHz AGC Gain Strip . . . . . . . . . . . . . . . . . . . . . 82dB

• AGC Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75dB

• Low LO Drive Level . . . . . . . . . . . . . . . . . . . . . . . -15dBm

• Fast AGC Switching . . . . . . . . . . . . . . . . . . . . . . . . . . 1 s

• Fast Transmit-Receive Switching . . . . . . . . . . . . . . . . . . . 1 s

• Power Management/Standby Mode

• Single Supply 3.0V Operation

• Wireless Local Loop

• Wireless Local Area Networks

• PCMCIA Wireless Transceivers

• ISM Systems

• CDMA Radios

• PCS/Wireless PBX

Ordering Information

HFA3766IN

HFA3766IN96

PART NUMBER

Low Pass Filter . . . . . . . . . . . . . . . . . . 2.2MHz to 17.6MHz

January 1999

PRISM and PRISM logo are trademarks of Intersil Corporation.

RANGE (

-40 to 85

TEMP.

LPF_RXI_OUT

LPF_RXQ _OUT

LPF_TXI_IN

LPF_TXQ_IN

80 Ld TQFP

Tape and Reel

File Number 4328.1

PACKAGE

HFA3766

Q80.14x14

PKG. NO.

Related parts for HFA3766IN

HFA3766IN Summary of contents

Page 1

... Power Management/Standby Mode • Single Supply 3.0V Operation • Wireless Local Loop • Wireless Local Area Networks • PCMCIA Wireless Transceivers • ISM Systems • CDMA Radios • PCS/Wireless PBX Ordering Information PART NUMBER HFA3766IN HFA3766IN96 /90 ...

Page 2

Pinout AGC1_BYP+ AGC1_IN+ GND AGC1_SEL AGC1_IN- AGC1_BYP- GND GND LPF_V CC 2V REF LPF_BYP LPF_TXI_IN LPF_TXQ_IN LPF_RXI_OUT LPF_RXQ_OUT LPF_SEL1 LPF_SEL0 LPF_TUNE1 LPF_TUNE0 Typical Application Diagram HFA3424 (NOTE) (FILE# 4131) CONVERTER (FILE# 4066) RFPA HFA3925 (FILE# 4132) ...

Page 3

Block Diagram LPF_SEL1 LPF_SEL0 LPF_TUNE0 LPF_TUNE1 LPF_RX_PE LPF_RXI - LPF_RXI + LPF_RXQ + LPF_RXQ - DEMOD_RXQ - DEMOD_RXQ + DEMOD_RXI - DEMOD_RXI + DEMOD_RX_PE DEDEMOD_IFIN+ DEMOD_IFIN - AGC2_OUT - AGC2_OUT + AGC2_PE 1000p 33p AGC2_IN+ AGC2_IN- 10nH AGC1_OUT - NO ...

Page 4

Pin Descriptions PIN SYMBOL 1 AGC1_BYP+ DC feedback pin for AGC ampliﬁer 1. Requires good decoupling and minimum wire length to a solid signal ground. 2 AGC1_IN+ Non-inverting analog input of AGC ampliﬁ GND Ground. Connect to a ...

Page 5

Pin Descriptions (Continued) PIN SYMBOL 28 LPF_RXQ+ Low pass ﬁlter non inverting input of the receive quadrature channel. AC coupling is required. This input is normally coupled to the positive output of the quadrature demodulator (Mod_RXQ+), pin 35. 29 LPF_RXI- ...

Page 6

Pin Descriptions (Continued) PIN SYMBOL 55 AGC2_OUT- Positive output of AGC ampliﬁer 2. Requires AC coupling. 56 AGC2_OUT+ Negative output of AGC ampliﬁer 2. Requires AC coupling. 57 AGC2_PE Digital input control to enable the AGC ampliﬁer 2. Enable logic ...

Page 7

Absolute Maximum Ratings Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6.0V Voltage on ...

Page 8

Cascaded AC Electrical Speciﬁcations, Demodulator Chain Performance IF = 280 MHz, Unless Otherwise Speciﬁed PARAMETER CASCADED CHARACTERISTICS Cascaded Power Gain Cascaded OIP3 Cascaded Noise Figure Cascaded Output 1dB Compression IF Demodulator I and Q Outputs Voltage Swing (IF input Range ...

Page 9

AC Electrical Speciﬁcations, Cascaded AGC Stages Performance PARAMETER Frequency Range (Note 14) Voltage Gain at Max Gain (Note 15 0.8V 500 AGC S L Voltage Gain at Min Gain (V = 2.1V, ...

Page 10

AC Electrical Speciﬁcations, LO Individual Performance PARAMETER Buffered LO Output Impedance Quadrature IF Modulator Output Frequency Range IF Modulator I/Q Input Frequency Range IF Modulator Differential I/Q Max Input Voltage IF Modulator Differential I/Q Input Impedance IF Modulator Differential Input ...

Page 11

... All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certiﬁcation. Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time with- out notice. 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. However, no responsibility is assumed by Intersil or its subsidiaries for its use ...

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