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參數(shù)資料
| 型號： | HFA3726IN |
| 廠商： | HARRIS SEMICONDUCTOR |
| 元件分類： | 衰減器 |
| 英文描述： | 3.3V 288-mc CPLD |
| 中文描述： | 10 MHz - 400 MHz RF/MICROWAVE QUADRAPHASE MODEM |
| 文件頁數(shù)： | 14/21頁 |
| 文件大?。?/td> | 162K |
| 代理商： | HFA3726IN |
14
Typical Application Diagram
(Targeting IEEE 802.11 Standard)
Overall Device Description
The HFA3726 is a highly integrated baseband converter for half
duplex wireless data applications. It features all the necessary
blocks for baseband modulation and demodulation of “I” and
“Q”quadraturemultiplexingsignals.Ittargetsapplicationsusing
all phase shift types of modulation (PSK) due to its hard limiting
receivingfrontend.Fourfullyindependentblocksaddsflexibility
for numerous applications covering a wide range of IF
frequencies. A differential design architecture, device pin out
and layout have been chosen to improve system RF properties
such as common mode signal immunity (noise, crosstalk),
reduce relevant parasitics, settling times and optimize dynamic
range for low power requirements. Single power supply
requirements from 2.7V
DC
to 5.5V
DC
makes the HFA3726 a
good choice for portable transceiver designs.
The HFA3726 has a two stage integrated limiting IF amplifier
with frequency response to 400MHz. These amplifiers
exhibit a -84dBm, -3dB cascaded limiting sensitivity with a
built in Receive Signal Strength Indicator (RSSI) covering
60dB of dynamic range with excellent linearity. An up
conversion and down conversion pair of quadrature doubly
balanced mixers are available for “I” and “Q” baseband IF
processing. These converters are driven by an internal
quadrature LO generator which has a broadband response
with excellent quadrature properties. To achieve broadband
operation, the Local Oscillator frequency input is required to
be twice the desired frequency for modulation/demodulation.
Duty cycle and signal purity requirements for the 2X LO input
using this type of quadrature architecture are less restrictive
V
CC
0.1
316
42
56
47p 220
LO_IN
1K
100p
100p
V
CC
V
CC
0.1
0.1
TX_IF_OUT
74
75
79
80
PE
55
56
57
59
60
54
44
46
43
48
49
(NOTE 22)
61
64
100p
100p
2
100p
1
1
2
3
4
1
1
0.1
560
100p
100p
76
77
62
63
1
47p
1
1
8
(NOTE 21)
0.1
47p
47nH
100p(NOTE 23)
(NOTE 20)
5
0.01
0.01
0.1
RXQ_OUT
15
L
L
M
M
RSSI
RXI_OUT
V
CC
0.1
0.1
V
CC
TXQ
0.1
29
30
33
34
14
9
10
2V REF
11
12
13
21
22
41
45
47
900
18
19
0.01
0.01
0.01
0.01
27
28
35
36
0.01
0.01
25
26
37
38
0.01
0.01
23
24
39
40
B
H
TXI
20
(NOTE 24)
C
H
R
I
TOYOCOM
TQS 432
TOYOCOM
TQS 432
VCO
560MHz
VCO (AUXILIARY)
DUAL SYNTHESIZER
HFA3524IA
50
NC
NOTES:
20. Input termination used to match a SAW filter.
21. Typical bandpass filter for 280MHz, BW = 47MHz, Q = 6. Can also be used if desired after the second stage.
22. Network shown for a typical -10dBm input at 50
.
23. Output termination used to match a SAW filter.
24. R
TUNE
value for a 7.7 MHz cutoff frequency setting.
FIGURE 23. TYPICAL APPLICATION DIAGRAM (TARGETING IEEE 802.11 STANDARD)
HFA3726
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| HFA3765IA | AGC and Quadrature IF Demodulator |
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| HFA3766IN96 | 400MHz AGC Quadrature IF Modulator/Demodulator |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| HFA3726IN WAF | 制造商:Harris Corporation 功能描述: |
| HFA3726IN96 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| HFA3761 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:400MHz AGC and Quadrature IF Demodulator |
| HFA3761/3763IN WAF | 制造商:Harris Corporation 功能描述: |
| HFA3761IN | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:400MHz AGC and Quadrature IF Demodulator |
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