Intersil Corporation HFA3661 Datasheet

TM

HFA3661

[ /Title
(HFA3

661)
/Sub­ject
(2.0G
Hz to

2.7GH
z
Down­Con­verter)
/Autho
r ()
/Key­words
(2.0G
Hz to

2.7GH
z
Down­Con­verter,
Inter­sil
Corpo­ration,
semi­con­ductor,
PRIS
M,
Wire­less
Com­muni­cations
, RF,
Radio

PRELIMINARY

Data Sheet February 1999 File Number 4240.2

2.0GHz to 2.7GHz DownConverter

The HFA3661 is a monolithic bipolar
devicefordownconversionapplications
in the 2.0GHz to 2.7GHz range.
Manufactured in the Intersil UHF1X

process, the device consists of a low
noise amplifier and down conversion mixer. An energy
saving power enable control feature assures isolation
between transmit and receive channels for TDMA and/or half
duplex systems. The device is designed for a high Output
IP3, while maintaining low current and 5.5V to 2.7V supply
operation. It requires low drive levelsfrom the local oscillator
and is housed in a small outline 20 lead SSOP package
ideally suited for PCMCIA card applications.

Ordering Information

TEMP.

PART NUMBER

HFA3661IA -40 to 85 20 Ld SSOP M20.15
HFA3661IA96 -40 to 85 Tape and Reel

RANGE (oC) PACKAGE

PKG.

NO.

Pinout

HFA3661

(SSOP)

TOP VIEW

LNA_V

CC

GND

LNA_OUT

GND

LNA_V

CC

GND

LNA_IN

GND

RXM_V

CC

RX_PE

1
2
3
4
5
6
7
8
9

10

20

LNA_PD

19

GND

18

RXM_RF

17

RXM_V

16

LO_BY

15

LO_IN

14

GND

13

BYP_CAP1

12

IF_OUT

11

BYP_CAP2

CC

Features

• RF Frequency Range. . . . . . . . . . . . . . 2.0GHz to 2.7GHz

• IF Operation . . . . . . . . . . . . . . . . . . . . 10MHz to 250MHz

• High Conversion Gain 2.0GHz . . . . . . . . . . . . . . . . . 40dB

2.7GHz . . . . . . . . . . . . . . . . . 36dB

• High Output IP3 . . . . . . . . . . . . . . . . . . . . . . . . . . . 11dBm

• Single Supply Battery Operation . . . . . . . . . 2.7V to 5.5V

• Power Enable Control

• LNA Bypass Control

Applications

• Wireless Local Loop Systems

• PCMCIA Wireless Transceiver

• Wireless Local Area Network Modems

• CDMA/TDMA Packet Protocol Radios

• Full Duplex Transceivers

• Portable Battery Powered Equipment

Block Diagram

LNA_OUT

LNA_PD

LNA_IN

IF_OUT

POWER CONTROL TRUTH TABLE

STATE LNA_PD RCV_PE

Power Down Mode
(LNA, Mixer, and IF Buffer are Power
Down)

Receive Mode
(Mixer Active, LNA Active)

Attenuated Receive Mode
(LNA Power Down used for RF Signal
Attenuation)

NOTE: LNA_PD and RCV_PE are floating pins.

RXM

LNA

BIAS NETWORK

RX_PE

High or Low Low

Low High

High High

RXM_RF
LO_BY
LO_IN

4-1

1-888-INTERSIL or 321-724-7143 | Intersil and Design is a trademark of Intersil Corporation. | Copyright © Intersil Corporation 2000

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

PRISM® is a registered trademark of Intersil Corporation. PRISM logo is a trademark of Intersil Corporation.

Typical Application Diagram

PRISM® FULL DUPLEX CHIP SET

HFA3661

(File #4240)

LNA

CONVERTER

SYNTHESIZER

SYNTHESIZER

AGC

CONVERTER

HFA3663 (File #4241)
HFA3664 (File #4242)

D
U
P
L
E
X
E
R

HFA3424/21
(File #4131)

LNA BPF

HFA3925

(File #4132)

PA BPF

HFA3524

(File #4062)

HFA3524

(File #4062)

RF/IF

RF LO1

RF LO2

IF/RF

FILTER

HFA3661

IF AGC

IF LO1

IF LO2

AGC

HFA3761 (File #4236)

QMODEM

HFA3763

(File #4237)

QMODEM

LPF

A/D

LPF

BASEBAND

LPF

D/A

LPF

OPTIONAL WHEN IN
ANALOG MODE

PRISM FULL DUPLEX RADIO
CHIP SET, FILE #4238

Pin Descriptions

PIN NO. NAME DESCRIPTION

1 LNA_V

CC

2 GND Low Noise Amplifier Ground
3 LNA_OUT Low Noise Amplifier RF Output
4 GND Low Noise Amplifier Ground
5 LNA_V

CC

6 GND Low Noise Amplifier Ground
7 LNA_IN Low Noise Amplifier RF Input
8 GND Low Noise Amplifier Ground
9 RXM_V

CC

10 RX_PE Receive Channel Power Enable (LNA, Mixer, and IF Buffer)
11 BYP_CAP2 Bypass Capacitor
12 IF_OUT Receive Mixer Buffered IF Output
13 BYP_CAP1 Bypass Capacitor
14 GND IF Buffer Ground
15 LO_IN Receive Mixer Local Oscillator Input
16 LO_BY Receive Mixer Local Oscillator Bypass
17 RXM_V

CC

18 RXM_RF Receive Mixer RF Input
19 GND Receive Mixer Ground
20 LNA_PD Low Noise Amplifier Power Down (Bypass mode used for RF Signal Attenuation)

Low Noise Amplifier Positive Power Supply (1 of 2)

Low Noise Amplifier Positive Power Supply (2 of 2)

Receive Mixer Positive Power Supply

Receive Mixer Positive Power Supply

4-2