RF2469 Просмотр технического описания (PDF) - RF Micro Devices
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RF2469 Datasheet PDF : 18 Pages
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Preliminary
RF2469
Pin Function Description
Interface Schematic
15 LNA1 BYP Logic control for LNA1 gain. A logic high (>2.4V) places LNA1 in the
high gain mode. A logic low (<0.3V) place LNA1 in the bypass mode.
LNA1 BYP
32 kΩ
16
ENABLE A logic control for mixer and LO buffer. A logic high (>2.4V) turn the
mixer and LO buffer on. A logic low (<0.3V) disable the mixer and LO
buffer.
ENABLE
32 kΩ
17
VCC1
Supply voltage for the mixer. An external resistor is place in series with
this pin to adjust the mixer current. A nominal value of 1000Ω set the
mixer current to ~10mA. External RF bypassing is required. The trace
length between the bypass caps and the pin should be minimized. Con-
nect ground sides of caps directly to ground.
18
VCC1
Supply voltage for IC. External RF bypassing is required. The trace
length between the bypass caps and the pin should be minimized. Con-
nect ground sides of caps directly to ground.
19
LNA1 IN RF input to LNA1. This pin is internally DC-biased and, if it is con-
nected to a device with DC present, should be DC-blocked with a
capacitor suitable for the frequency of operation.
LNA1 IN
20
Pkg
Base
GND
GND
Ground connection. For best performance, keep traces physically short
and connect directly to ground plane.
Ground connection. The backside of the package should be soldered to
a top side ground pad which is connected to the ground plane with mul-
tiple vias.
8
Rev A5 010717
8-37
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