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TRF3520 Datasheet

  • TRF3520

  • GSM RF MODULATOR/DRIVER AMPLIFIER

  • 17頁

  • TI

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TRF3520
GSM RF MODULATOR/DRIVER AMPLIFIER
SLWS060A 鈥?MAY 1998
D
D
D
D
Modulation and Upconversion from I/Q
Baseband to RF on Single Chip
Designed for GSM Portable Cellular
Telephones
Internal VCO and SSB Mixer for Transmit
Carrier Generation
Internal RF Filter for Minimal External Parts
D
D
D
D
D
D
Power Amplifier Driver
Independent Power-Up/-Down Functions
3.75 -V Operation
Low Current Consumption
Serial Data Interface
48-Pin Plastic Quad Flatpack (PFB)
description
The TRF3520 radio frequency (RF) modulator/amplifier is a single-chip RF integrated circuit (IC) suitable for
900-MHz wireless global system for mobile communications (GSM) applications. It combines a direct
conversion RF in-phase/quadrature-phase (I/Q) modulator, a single-sideband suppressed carried (SSB) mixer,
an RF filter, a power amplifier (PA) driver, a buffered voltage-controlled oscillator (VCO), and a serial interface
into one small package. Very few external components are required. During idle operation, the individual
functional elements may be selectively placed in standby mode for minimum power consumption.
PFB PACKAGE
(TOP VIEW)
TXO_VCC
TXO_GND
TXO_SYN
NC
DB2_GND
DB2_OUT
48 47 46 45 44 43 42 41 40 39 38 37
DB2_VCC
DIG_VCC
DIG_CLK
DIG_STR
DIG_DAT
DIG_GND
TXO_TNK2
TXO_TNK1
TXO_GND
NC
NC
NC
PSUB
NC
DRV_GND
DRV_OUT鈥?/div>
DRV_OUT+
DRV_GND
1
2
3
4
5
6
7
8
9
10
11
12
13 14 15 16 17 18 19 20 21 22 23 24
36
35
34
33
32
31
30
29
28
27
26
25
TXM_V
CC
TXM_GND
TXM_LO+
TXM_LO鈥?/div>
TXM_GND
TXM_GND
NC
PH2
PH1
MOD_GND
MOD_V
CC
MOD_GND
NC 鈥?No internal connection
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the gates.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
DRV_GND
DRV_VCC
DRV_GND
NC
VBG_IN
NC
VBG_OUT
I+
I鈥?/div>
MOD_GND
Q+
Q鈥?/div>
Copyright
漏
1998, Texas Instruments Incorporated
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
1

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