參數(shù)資料
型號(hào)： RF3404
廠商： RF MICRO DEVICES INC
元件分類(lèi)： 無(wú)繩電話/電話
英文描述： DUAL-BAND/TRI-MODE CDMA LOW NOISE AMPLIFIER/MIXER MODULE
中文描述： TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PBGA48
封裝： 8 X 8 MM, MODULE, LGA-48
文件頁(yè)數(shù)： 7/12頁(yè)
文件大?。?/td> 202K
代理商： RF3404
Preliminary
8-39
RF3404
Rev A1 010918
8
F
Pin
24
Function
FM IF+
Description
FM IF output. Open collector. “Current combiner” IF interface to SAW
filter recommended.
Interface Schematic
25
FM IF-
FM IF output. Open collector. “Current combiner” IF interface to SAW
filter recommended.
Logic input. High enable frequency divide by 2 circuitry in cellular
mode.
See pin 24.
26
DIVIDER
ENABLE
LO IN
27
LO single-end input. Internal DC block.
28
29
GND
ENABLE
Low-inductance ground required.
Logic input. Low level shuts down IC. IC can be shut down by setting
pins 44 and 45 high and TX Buffer Enable low as well.
30
TX BUFFER
ENABLE
Logic input. High enables TX LO buffer amplifiers.
31
LNA GAIN
Logic input. Controls LNA bypass switch. High selects maximum LNA
gain.
32
33
34
35
36
37
38
39
40
41
42
43
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
VCC4
Low-inductance ground required.
Low-inductance ground required.
Low-inductance ground required.
Low-inductance ground required.
Low-inductance ground required.
Low-inductance ground required.
Low-inductance ground required.
Low-inductance ground required.
Low-inductance ground required.
Low-inductance ground required.
Low-inductance ground required.
V
CC
connection for internal references, logic, and mix preamps. Inter-
nal RF bypass capacitor. External bypass capacitor between 1nF and
47nF may be required.
Logic input. High level selects PCS band; lower level selects cellular
band.
44
BAND SEL
45
IF SEL
Logic input. High selects FM IF outputs in cellular mode; low selects
CDMA IF outputs.
FM+
FM-
LO IN
ENABLE
TX BUF
LNA GAIN
BAND SEL
IF SEL
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RF3404E 功能描述:信號(hào)調(diào)節(jié) 433.92MHz Narrowband Receiver Front End RoHS:否 制造商:EPCOS 產(chǎn)品:Duplexers 頻率:782 MHz, 751 MHz 頻率范圍: 電壓額定值: 帶寬: 阻抗:50 Ohms 端接類(lèi)型:SMD/SMT 封裝 / 箱體:2.5 mm x 2 mm 工作溫度范圍:- 30 C to + 85 C 封裝:Reel
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