MC13145FTA Ver la hoja de datos (PDF) - LANSDALE Semiconductor Inc.
Número de pieza
componentes Descripción
Fabricante
MC13145FTA
LANSDALE Semiconductor Inc.
MC13145FTA Datasheet PDF : 17 Pages
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LANSDALE Semiconductor, Inc.
ML13145
Pin
Symbol/Type
8
VEE
11
V CC
9
PRSCout
9
PRSC Out
8
V EE
10
MC
10
MC
11, 12
VCC
14
LNA In
13, 15,
& 16
VEE
17
LNAout
17
LNA out
15, 16
V EE
13
V EE
14
LNA in
11,12
V CC
19
Mxr1In
20
LinAdj1
20
Lin Adj1
19
Mxr1 In
Description
Description
VEE, Negative Supply Voltage
1.0 mA
V CC
Prescaler Output
The prescaler output provides typically 500 mVpp
drive to the fin pin of a PLL synthesizer. Conjugately
matching the interface will increase the drive
delivered to the PLL input.
Dual Modulus Control Current Input
This requires a current input of typically 200 µApp.
Vref2
Vref1
2.0 mA
V CC
VCC, Positive Supply
VCC pin is taken to the incoming positive battery or
regulated dc voltage through a low impedance trace
on the PCB. It decoupled to VEE ground at the pin
of the IC.
LNA In
The input is the base of the common emitter
transistor. Minimum external matching is required to
optimize the input return loss and gain.
VEE, Negative Supply
VEE pin is taken to an ample dc ground plane
through a low impedance path. The path should be
kept as short as possible. A minimum two sided
PCB is recommended so that ground returns can
be easily made through via holes.
LNA Out
The output is from the collector of the cascode
transistor amplifier. The output may be conjugately
matched with a shunt L (needed to dc bias the open
collector), and series L and C network.
1st Mixer Input
The mixer input impedance is broadband 50 Ω for
applications up to 2.4 GHz. It easily interfaces with
a RF ceramic filter.
450 µA
1st Mixer Linearity Control
The mixer linearity control circuit accepts
approximately 0 to 300 µA control current to set the
dynamic range of the mixer. An Input Third Order
Intercept Point, IIP3 of 17 dBm may be achieved at
300 µA of control current.
Page 7 of 17
www.lansdale.com
Issue 0
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