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參數(shù)資料
| 型號： | RF2909 |
| 廠商： | RF MICRO DEVICES INC |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | 3V 915MHZ SPREAD-SPECTRUM TRANSMITTER IC |
| 中文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PDSO24 |
| 封裝： | SSOP-24 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 156K |
| 代理商： | RF2909 |
11-107
RF2909
Rev B1 010904
11
T
SeeUpgradedProductRF2942
Pin
19
Function
RF OUT
Description
Power Amp output, open collector output.
Interface Schematic
20
21
22
23
GND5
GND6
NC
I REF
Same as pin 17.
Same as pin 17.
Reference voltage for the I mixer. This voltage should be the same as
the DC voltage supplied to the I SIG pin. To obtain a carrier suppres-
sion of better than 25dB it may be tuned ±0.15V (relative to the I SIG
DC voltage). Without tuning, the carrier suppression will typically be
better than 25dB. The input impedance of this pin is 3k
.
24
I SIG
Baseband input to the I mixer. A DC bias of approximately 1.7V is
present at this pin.A DC blocking capacitor is needed if the signal has a
different DC level. Maximum output power is obtained when the input
signal has a peak to peak amplitude of 1V. The input impedance of this
pin is about 3 k
. The REF and SIG inputs are interchangeable. If
swapping the I SIG and I REF pins, the Q SIG and Q REF also need to
be swapped to maintain the correct phase. The SIG and REF pins may
be driven differentially to increase conversion gain.
See pin 23.
Table I
Operation
Mode
Sleep Mode
PLL Buffer
Linear Po Mode
Digital Po Mode
Medium Power
High Power
TX
PD
Low
Low
High
High
High
High
PLL
ON
Low
High
High
High
High
High
PC 1
PC 2
APC
Function
Low
Low
Low
Low
High
Low
Low
Low
Low
Low
Low
High
0V
0V
0-V
cc
V
0V
0V
0V
Entire chip is powered down. Total I
cc
<1
μ
A.
LO Buffer is on. I
cc
=1.5mA
Transmitter in on. Power output is proportional to APC.
Transmitter is on. Power out is 1mW.
Transmitter is on. Power out is 10mW.
Transmitter is on. Power out is 70mW.
RF OUT
INSTGT
BIAS
I REF
I SIG
相關PDF資料 |
PDF描述 |
|---|---|
| RF2915 | 433/868/915MHZ FSK/ASK/OOK TRANSCEIVER |
| RF2917 | 433/868/915MHZ FM/FSK RECEIVER |
| RF2919 | 433/868/915MHZ ASK/OOK RECEIVER |
| RF2926 | UHF DUAL CONVERSION TRANSCEIVER |
| RF2938 | 2.4GHZ SPREAD-SPECTRUM TRANSCEIVER |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| RF2915 | 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:433/868/915MHZ FSK/ASK/OOK TRANSCEIVER |
| RF2917 | 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:433/868/915MHZ FM/FSK RECEIVER |
| RF2919 | 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:433/868/915MHZ ASK/OOK RECEIVER |
| RF2926 | 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:UHF DUAL CONVERSION TRANSCEIVER |
| RF2926-000 | 制造商:TE Connectivity 功能描述:FEMTOSMDC005F-2 - Tape and Reel |
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