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參數(shù)資料
| 型號： | RF2494 |
| 廠商： | RF MICRO DEVICES INC |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | HIGH FREQUENCY LNA/MIXER |
| 中文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, QCC16 |
| 封裝： | 4 X 4 MM, QFN-16 |
| 文件頁數(shù)： | 4/14頁 |
| 文件大?。?/td> | 233K |
| 代理商： | RF2494 |
Preliminary
8-56
RF2494
Rev A0 010730
8
F
Pin
13
Function
LNA OUT
Description
RF signal output for external 50
filtering.The use of a filter here is
optional but does provide for lower noise floor and better out-of-band
rejection.
Supply voltage for the LNA. This pin should be bypassed with a 10 pF
capacitor to ground as close to the pin as possible. The shunt induc-
tance from this pin to ground via the supply decoupling must be tuned
to match the LNA output to 50
at the desired operating frequency.
Interface Schematic
See pin 14.
14
VCC4
15
GS
LNA gain control. When GAIN SEL is >V
CC
-300mV, LNA gain is at 10
dB. When GAIN SEL is <300mV, the LNA gain is -6dB.
This pin is NOT internally DC blocked. An external blocking capacitor
must be provided if the pin is connected to a device with DC present. If
a blocking capacitor is required, a value of 2pF is recommended.
See pin 14.
16
LNA IN
See pin 14.
P2
LNA IN
BIAS
VCC4
P1
GAIN SEL
P15
LNA OUT
EXTERNAL
DECOUPLING
Microstrip
-16 dB
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| RF2495 | 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:900MHZ 3V LOW CURRENT LNA/MIXER |
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