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TRF1020PFB Datasheet(PDF) 3 Page - Texas Instruments

Part # TRF1020PFB
Description  GSM RECEIVER
Download  26 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TRF1020PFB Datasheet(HTML) 3 Page - Texas Instruments

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TRF1020
GSM RECEIVER
SLWS028B – MAY 1998 – REVISED SEPTEMBER 1998
3
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
functional block diagram
External
LPF
2nd LO
From Modulator
(MIX2_LO)
2nd IF
Amplifier
1st IF
Amplifier
External
IF BPF
RF Mixer
0
°
90
°
Buffer
2nd
VCO
Buffer
I /Q Mixer
Buffer
Buffer
External
Tank
IQMIX_Q +
SYNTH
Loop Filter
Divide
-by-Four
To SYNTH
(OS2_DIV4)
To SYNTH
(OS2_SYN)
External
RF BPF
Serial Interface
LNA
IQMIX_Q –
IF2_IN+
IF2_IN–
MIX2_IF–
MIX2_IF+
IQMIX_I +
IQMIX_I –
IF1_IN+
IF1_IN–
19
MIX1_RF
16
LNA_OUT
39
41
48
2
1
38
5
4
36
14
LNA_IN
78
9
10
11
12
20
21
31
30
34
35
43
44
Buffer
Buffer
÷ 4
IF Mixer
1st LO in
(OS1_EMIT)
Buffer
Buffer
To SYNTH
(OS1_SYN)
29
Buffer
To Transmit
Modulator
(OS1_MOD)
28
24
MIX1_IF–
MIX1_IF+
OS2_BASE
OS2_EMIT


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