HFA3766 PDF даташит
Спецификация HFA3766 изготовлена «Intersil Corporation» и имеет функцию, называемую «400MHz AGC Quadrature IF Modulator/Demodulator». |
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Детали детали
Номер произв | HFA3766 |
Описание | 400MHz AGC Quadrature IF Modulator/Demodulator |
Производители | Intersil Corporation |
логотип |
11 Pages
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PRELIMINARY
HFA3766
January 1999
File Number 4328.1
400MHz AGC Quadrature IF
Modulator/Demodulator
™ 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
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
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
Low Pass Filter . . . . . . . . . . . . . . . . . . 2.2MHz to 17.6MHz
• 400MHz AGC Gain Strip . . . . . . . . . . . . . . . . . . . . . 82dB
• AGC Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75dB
• Low LO Drive Level . . . . . . . . . . . . . . . . . . . . . . . -15dBm
• Fast AGC Switching . . . . . . . . . . . . . . . . . . . . . . . . . . 1µs
• Fast Transmit-Receive Switching . . . . . . . . . . . . . . . . . . . 1µs
• 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
TEMP.
RANGE (oC) PACKAGE
-40 to 85 80 Ld TQFP
-40 to 85 Tape and Reel
PKG. NO.
Q80.14x14
AGC_SEl
AGC1_IN
AGC1_VAGC
AGC2_VAGC
LO_IN
LO_OUT
LO_GND
MOD_TX_IF_OUT
I
MM
÷2 0o/90o
U
X
U
X
∑
2V REF
Q
LPF_RXI_OUT
LPF_RXQ _OUT
LPF_TXI_IN
LPF_TXQ_IN
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
PRISM and PRISM logo are trademarks of Intersil Corporation.
www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
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Pinout
HFA3766
80 LEAD TQFP
TOP VIEW
AGC1_BYP+
AGC1_IN+
GND
AGC1_SEL
AGC1_IN-
AGC1_BYP-
GND
GND
LPF_VCC
2V REF
LPF_BYP
LPF_TXI_IN
LPF_TXQ_IN
LPF_RXI_OUT
LPF_RXQ_OUT
LPF_SEL1
LPF_SEL0
LPF_TUNE1
LPF_TUNE0
TX D OR A
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
1 60
2 59
3 58
4 57
5 56
6 55
7 54
8 53
9 52
10 51
11 50
12 49
13 48
14 47
15 46
16 45
17 44
18 43
19 42
20 41
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
AGC2_VAGC
GND
AGC2_VCC
AGC2_PE
AGC2_OUT+
AGC2_OUT-
AGC2_VCC
GND
GND
GND
LO_GND
DEMOD_IFIN-
DEMOD_IFIN+
MOD_VCC
LO_OUT
MOD_VCC
LO_IN
DEMOD_RX_PE
MOD_TX_IF_OUT
MOD_TX_PE
Typical Application Diagram
HFA3424 (NOTE)
(FILE# 4131)
HFA3624
RF/IF
CONVERTER
(FILE# 4066)
HFA3766
(FILE# 4328)
TUNE/SELECT
RXI
I
M RXQ
U
X
÷2 M
0o/90o U
M VAGC
U
XX
RFPA
HFA3925
(FILE# 4132)
VCO
VCO
DUAL SYNTHESIZER
HFA3524 (FILE# 4062)
For additional information on the PRISM™ Full Duplex Radio
Chip Set, call (407) 724-7800 to access Intersil’s AnswerFAX
system. When prompted, key in the four-digit document
number (File #) of the data sheets you wish to receive.
Q
QUAD IF MODEM
TX D OR A
PRISM™ CHIP SET FILE #4063
The four-digit file numbers are shown in Typical Application
Diagram, and correspond to the appropriate circuit.
2
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Block Diagram
HFA3766
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-
AGC1_OUT -
AGC1_OUT +
10nH
NO FIT
56 56
AGC1_PE
MUX
-Q
MUX
LPF_TX_PE
LPF_TXQ -
LPF_TXQ +
LPF_TXI -
LPF_TXI +
MOD _TXI +
MOD _TXI -
MOD _TXQ +
MOD _TXQ -
MOD_TX_PE
2V REF
NOTE: VCC, GND and Bypass capacitors not shown.
3
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