- 您現在的位置：買賣IC網 > PDF目錄385769 > RF2926 (RF MICRO DEVICES INC) UHF DUAL CONVERSION TRANSCEIVER PDF資料下載
參數資料
| 型號： | RF2926 |
| 廠商： | RF MICRO DEVICES INC |
| 元件分類： | 通信及網絡 |
| 英文描述： | UHF DUAL CONVERSION TRANSCEIVER |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PQFP48 |
| 封裝： | PLASTIC, LQFP-48 |
| 文件頁數： | 6/10頁 |
| 文件大?。?/td> | 327K |
| 代理商： | RF2926 |
11-190
RF2926
Rev A5 010404
11
T
Pin
30
Function
RESNTR+
Description
This port is used to supply DC voltage to the VCO as well as to tune the
center frequency of the VCO. Equal value inductors should be con-
nected to this pin and pin 31 although a small imbalance can be used
to tune in the proper frequency range.
Interface Schematic
31
32
RESNTR-
VCC2
See RESNTR+ description.
See pin 30.
This pin is used is supply DC bias to the VCO and buffer amps. A 10nF
capacitor is recommended for 10.7MHz IF applications.
GND4 is the ground shared on chip by the VCO, prescaler, and PLL
electronics.
FM analog or digital modulation can be imparted to the VCO through
this pin. The VCO varies in accordance to the voltage level presented
to this pin. To set the deviation to a desired level, a voltage divider refer-
enced to V
CC
is the recommended. This deviation is also dependent
upon the overall capacitance of the external resonant circuit.
This pin is used is supply a buffered VCO output to go to the PLL chip.
This pin has a DC bias and needs to be AC coupled.
33
GND4
34
MOD IN
See pin 30.
35
VCO OUT
36
LO-
Balanced input for the first LO. This signal is presented to both the
receiver second downconverter and transmit upconvertor.
37
38
LO+
GND8
Complementary input of LO-.
See pin 36.
Ground for LO amp and transmit upconvertor. Keep traces physically
short and immediately to the ground plane for best performance.
The output of the transmit signal upconvertor. This signal should be fil-
tered to remove the undesired sideband and spurs before being applied
to the PA input, pin 45.
Same as pin 38.
39
UP CONV
40
41
GND9
VCC1
See pin 38.
This pin is used to supply DC bias to the receiver RF electronics. A RF
bypass capacitor should be connected directly to this pin and returned
to ground. A 100pF capacitor is recommended for 915MHz applica-
tions. A 220pF capacitor is recommended for 433MHz applications.
This pin is used to mute the data output (DATA OUT). MUTE>2.0V
turns the DATA OUT signal on. MUTE<1.0V turns the DATA OUT signal
off. The MUTE signal should be logic low in the Sleep Mode.
42
MUTE
43
MIX CA
Mixer Current Adjust. This pin is used to adjust the current in the
receiver. A resistor connected to ground controls the bias current in the
mixer. The resistor should vary between 1k
to open circuit to vary the
current from 18mA to 10.6mA
Input of the transmit power amplifier.
44
45
PA INP
VCC3
This pin is used to supply DC bias to the transmitter PA. A RF bypass
capacitor should be connected directly to this pin and returned to
ground. A 100pF capacitor is recommended for 915MHz applications.
A 220pF capacitor is recommended for 433MHz applications.
RESNTR-
RESNTR+
4 k
MOD IN
VCO OUT
LO+
LO-
25 k
75 k
MUTE
相關PDF資料 |
PDF描述 |
|---|---|
| RF2938 | 2.4GHZ SPREAD-SPECTRUM TRANSCEIVER |
| RF2942 | UHF QUADRATURE MODULATOR AND TRANSMITTER |
| RF2945 | 433/868/915MHZ FSK/ASK/OOK TRANSCEIVER |
| RF2958 | 2.4GHz SPREAD-SPECTRUM TRANSCEIVER |
| RF2958PCBA | 2.4GHz SPREAD-SPECTRUM TRANSCEIVER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| RF2926-000 | 制造商:TE Connectivity 功能描述:FEMTOSMDC005F-2 - Tape and Reel |
| RF2926PCBA | 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:UHF DUAL CONVERSION TRANSCEIVER |
| RF2938 | 制造商:RF Micro Devices Inc 功能描述:Telecommunication IC |
| RF2938TR13 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Interface IC |
| RF2942 | 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:UHF QUADRATURE MODULATOR AND TRANSMITTER |
發(fā)布緊急采購，3分鐘左右您將得到回復。