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PDF AS3802 Data sheet ( Hoja de datos )
| Número de pieza | AS3802 | |
| Descripción | CDMA/FM RECEIVE AGC AMPLIFIER AS3802 | |
| Fabricantes | austriamicrosystems AG | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AS3802 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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Preliminary Data Sheet
Austria Mikro Systeme International AG
Key Features
r Supports dual mode operation.
r -50 to +50db gain control guaranteed.
r Single 3.6V supply.
r Temperature and supply stabilized.
r Power down feature.
r 80MHz to 250MHz operation.
r Silicon BiCMOS process.
r Miniature surface mount 16 pin, 150 mil SSOP
package.
Compatibility
The AS3802 is designed to be functionally or/and
pin compatible to the following products:
r RF9907 (RF Micro Devices), pin compat.
r Q5500
(Qualcomm),
pin compat.
r CXA3001N (Sony)
AS3802
CDMA/FM RECEIVE AGC
AMPLIFIER AS3802
General Description
The AS3802 is a gain controlled amplifier designed
for the receive section of dual mode CDMA/FDM,
TDMA/FDM or FM/FDM cellular phones.
Key specifications like gain range noise figure, IP3,
temperature range and other specifications are
designed to be in line with the IS-95 Standard for
CDMA cellular communications.
The circuit is designed for narrow band IF
applications but can also be used in wideband
applications.
Applications
r Digital cellular systems with receiving methods:
CDMA/FDM, TDMA/FDM, FM/FDM and
TDMA/TDD.
r Examples: IS-95 CDMA, IS-54 DAMPS, AMPS,
PWT.
r Cordless phones analog/digital.
r General purpose linear IF amp’s.
r WLL / WLAN
Rev. C
CDMA+
CDMA-
GND
FM+
FM-
GND
SEL
PWD
SSOP-16
VCTRL
VCC
VCC
VCC
GND
GND
OUT+
OUT-
1/9
Nov. 98
1 page  
Preliminary Data Sheet
AS3802
Definition of CDMA Source Impedance,
ZS, and AS3802 Input Impedance ZIN
IF Signal
Source
Zs=500Ω
Vp
Vn
R=1kΩ
CDMA+
CDMA-
Zin=1kΩ (typ)
The value of the 1kΩ resistor is calculated in the
matching network between the filter and the input of the
RX-APM.
Definition of FM Source Impedance, ZS,
and AS3802 Input Impedance ZIN
IF Signal
Source
Zs=850Ω
Vp
Vn
FM+
FM-
(AC GND)
Definition of Load Impedance, ZL, and
AS3802 Output Impedance ZO
RX-CDMA
OUT+
Output
Port
Z0
OUT-
Z1
ZLeff
VCC
Z1
RB
Measurement
Reference Plane
ZL
RX-CDMA Output Port Impedance
Load Impedance
Bias Resistor
Bias Inductors
Effective Load
ZO>5kΩ
ZL=500Ω
RB=500Ω *
L=Choke,
ω.L>>RB*
ZLeff=250Ω
*Note:
Z1 can be a resistor or a choke.
If it is a resistor Z1=R1=250Ω then RB is not
used.
If it is a choke, ω.L>>RB and RB=500Ω.
Zin=850Ω (typ)
AC GND is defined as FM- in the package pin definition.
Rev. A
5/9 Jul 98
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet AS3802.PDF ] | |
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