RF2347 Просмотр технического описания (PDF) - RF Micro Devices
Номер в каталоге
Компоненты Описание
производитель
RF2347 Datasheet PDF : 8 Pages
| |||
RF2347
Pin Function Description
Interface Schematic
1
PD
For low noise amplifier applications, this pin is used to control the bias
current. See plots for bias current settings.
PD
For driver amplifier applications, this is the Power Down pin for the IC.
VPD =2.8V +/- 0.1V is required for proper operation. VPD< 0.9V turns
off the Part. External RF bypassing is required. The trace length
between the pin and the bypass capacitors should be minimized. The
ground side of the bypass capacitors should connect immediately to
ground plane. Nominal current required for VPD=2.8 V is 2.0mA typical
and 3.0mA Max (@ VPD=2.9V).
2
NC
No connection. This pin is typically left unconnected or grounded.
3
RF IN
RF input pin. This pin is DC coupled and matched to 50Ω at 836 MHz.
4
To Bias
Circuit
RF
IN
RF OUT
4
GND1
Ground connection. Keep traces physically short and connect immedi-
ately to ground plane for best performance.
5
NC
See pin 2. This pin is typically grounded.
6
GND2
Ground connection. Keep traces physically short and connect immedi-
ately to ground plane for best performance.
7
RF OUT Amplifier Output pin. This pin is an open-collector output. It must be
biased to either VCC or pin 7 through a choke or matching inductor.
This pin is typically matched to 50Ω with a shunt bias/matching induc-
tor and series blocking/matching capacitor. Refer to application sche-
matics.
8
GND2
See pin 6.
Rev A5 991207
4-165
Share Link: 