Page 1
Preliminary Data Sheet AS3802
SSOP-16
CDMA+
CDMA-
GND
FM+
FM-
GND
SEL
PWD
OUT-
OUT+
GND
GND
VCC
VCC
VCC
VCTRL
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8
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9
AS3802
Austria Mikro Systeme International AG
CDMA/FM RECEIVE AGC
AMPLIFIER AS3802
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)
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 1/9 Nov. 98
Page 2
Preliminary Data Sheet AS3802
This document contains information on products under development. Austria Mikro Systeme Intl. AG reserves
the right to change or discontinue this product without notice.
Absolut Maximum Ratings (non operating)
Symbol Parameter min max Unit Note
VDD Positive Supply Voltage -0.5 7 V
GND Analog Ground 0 0 V
Vin Voltage at every Input Pin) Gnd-0.5 VDD+0.5 V
Iin Input Current
(into any pin except supply pins and
except low leakage pin)
Iin_15 Input Current into Low Leakage Pin -25 25 mA
H Humidity Noncondensing 1)
ESD Electrostatic Discharge 1000 V 2)
Tstg Storage Temperature -55 125 deg C
Tlead Lead Temperature 260 deg C 3)
Notes:
1) Defined DIN 40040 cond. F.
2) HBM: R=1.5kOhm, C=100pF.
Open collector outputs have less ESD protection because the protection diode to the positive supply
cannot be implemented (The output swing is higher than Vpos.+0.7V).
3) 260 deg C for 10 sec (Reflow and wave soldering), 360 deg C for 3 sec (Manual soldering).
The above figures conform to CMOS standard for low leakage application.
-40 40 mA
Recommended Operating Conditions
Symbol Parameter min typ max Unit Note
VDD Positive Supply Voltage 3.6 V 1)
GND Analog Ground 0 0 0 V
Idd Supply Current 10 14 mA 2)
Tamb Ambient Temperature Range,
Operating Range
Notes:
1) 3.6V ± 5%.
2) Measured at pin VDD, see test schematic, no signal.
Rev. A 2/9 Jul 98
-30 +80 deg C
Page 3
Preliminary Data Sheet AS3802
RX AGC Electrical Characteristics
Parameter min typ max Unit Note
Frequency Range 80-250 MHz f
Maximum Gain 50 dB VG=3V
Minimum Gain -50 dB VG=0.2V
Noise Figure 6.5 dB max Gain
Input IP3 -7
-14
Output CP1 -25 dBm
Gain Var. in +/-630 kHz
bandwidth centered at 85MHz
Gain Slope Linearity
(over any 6dB segment)
Gain Control Voltage Range 0.2-3 V 0.2V min Gain
Gain Control Input Impedance 16
Current Consumption 10 14 mA
Input Resistance 1k diff.
+/-0.05 dB
+/- 3 dB -32 to +72 deg.C
850 sing.
dBm
dBm
kΩ
Ω
Ω
=250MHz
-3dB
min Gain FM
min Gain CDMA 1)
3.0V max Gain
ref. To GND
CDMA
FM
Output Impedance 500
CDMA to FM Isolation 30 dB
Power Down Mode 2)
Notes:
Measurements refered to 85MHz.
1) Two tone measurement is used.
f1=86MHz; f2=87MHz; SEL=High for CDMA mode, SEL=Low for FM mode.
2) High≡Active, Low≡Power save, Input impedance ≥16kΩ.
Ω 500 Ω differential
outside
(Reff. =250Ω)
Rev. A 3/9 Jul 98
Page 4
Preliminary Data Sheet AS3802
Pin Description
Pin# Symbol Function
1 CDMA+ CDMA Positive Differential Input
2 CDMA- CDMA Negative Differential Input
3 GND Analog Ground
4 FM+ Single Ended Analog Input
5 FM- Analog Ground Connection (RX FM Input Reference)
6 GND Analog Ground
7 SEL Select, CMOS Input V
V
SELECT
SELECT
8 PWD Power down, CMOS Input V
V
9 OUT- Analog Differential Output
10 OUT+ Analog Differential Output
11 GND Analog Ground
12 GND Analog Ground
13 VCC VCC Power Supply
14 VCC VCC Power Supply
15 VCC VCC Power Supply
16 VCTRL Analog Control Input
VCTRL=0.2V, Low Gain Rail; VCTRL=3V, High Gain Rail
>=3.4V, CDMA Mode Select
<=0.5V, FM Mode Select
>=3.4V, RX-AGC Active
PWD-RX
<=0.5V, RX-AGC Off
PWD-RX
Rev. A 4/9 Jul 98
Page 5
Preliminary Data Sheet AS3802
Source
CDMA+
CDMA-
Source
FM+
OUT+
Port
OUT-
VCC
Z1
Z1
Z
0
ZL
eff
Definition of CDMA Source Impedance,
ZS, and AS3802 Input Impedance Z
Zs=500
Ω
Vp
IF Signal
Vn
The value of the 1kΩ resistor is calculated in the
matching network between the filter and the input of the
RX-APM.
R=1k
Ω
Zin=1kΩ (typ)
IN
Definition of FM Source Impedance, ZS,
and AS3802 Input Impedance Z
Zs=850
Ω
Vp
IF Signal
IN
Definition of Load Impedance, ZL, and
AS3802 Output Impedance Z
RX-CDMA
Output
RX-CDMA Output Port Impedance ZO>5kΩ
Load Impedance ZL=500Ω
Bias Resistor RB=500Ω *
Bias Inductors L=Choke,
Effective Load Z
*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.
O
R
B
Measurement
Reference Plane
ω.L>>RB*
=250Ω
Leff
Z
L
Vn
FM(AC GND)
Zin=850Ω (typ)
AC GND is defined as FM- in the package pin definition.
Rev. A 5/9 Jul 98
Page 6
Preliminary Data Sheet AS3802
Transfer Characteristic
FM RX AGC
80,00
60,00
40,00
20,00
Gain, 25 degC
0,00
- 0,50 1,00 1,50 2,00 2,50 3,00 3,50
Gain [dB]
-20,00
-40,00
-60,00
Gain, 75 degC
Gain, -35 degC
-80,00
Vcntrl [V]
CDMA RX AGC
80,00
60,00
40,00
20,00
0,00
- 0,50 1,00 1,50 2,00 2,50 3,00 3,50
Gain [dB]
-20,00
-40,00
-60,00
-80,00
Vcntrl [V]
Gain, 25 degC
Gain, 75 degC
Gain, -35 degC
Rev. A 6/9 Jul 98
Page 7
Preliminary Data Sheet AS3802
Pim
Intermodulation Performance
RX CDMA IIP3
-10
-60 -50 -40 -30 -20 -10 0 10 20 30 40
-15
-20
-25
-30
-35
IIP [dBm]
-40
-45
-50
-55
Pin=const. = -26 dBm
Gain [dB]
Pout=const. = -41 dBm
RX FM IIP3
0
-60 -50 -40 -30 -20 -10 0 10 20 30 40
-5
-40
-50
-60
-70
-80
-90
-100
-110
-120
-40
-50
IIP3
Pim
Pim [dBm]
-10
-15
-20
-25
IIP3[dBm]
-30
-35
-40
-45
-50
Pin=const. = -26 dBm
Gain [dB]
Pout=const. = -41 dBm
-60
-70
-80
-90
-100
-110
-120
-130
-140
IIP3
Pim [dBm]
Rev. A 7/9 Jul 98
Page 8
Preliminary Data Sheet AS3802
Compression Behaviour
Output CP1
44
43
42
41
40
Gain [dB]
-90 -80 -70 -60 -50 -40 -30
39
38
37
36
35
-1 dB
Pin [dBm]
0
-5
-10
-15
-20
-25
-30
-35
-40
Pout, RX CDMA
Gain, RX CDMA
Gain, RX FM
Pout [dBm]
Pout, RX FM
Rev. A 8/9 Jul 98
Page 9
Preliminary Data Sheet AS3802
Typical Application @ 85MHz
The information furnished herein by Austria Mikro Systeme International is substantially correct and accurate. However, Austria Mikro Systeme
International shall not be liable to licensee or any third party for any damages, including but not limited to personal injury, property damage, loss
of profits, loss of use, interrupt of business or indirect, special incidental or consequential damages, of any kind, in connection with or arising
out of the furnishing, performance or use of the technical data. No obligation or liability to licensee or any third party shall arise or flow out of
Austria Mikro Systeme International’s rendering of technical or other services.
Austria Mikro Systeme International makes no warranty, express, statutory, implied, or by description regarding the information set forth herein
or regarding the freedom of the described devices from patent infringement. Austria Mikro Systeme International reserves the right to change
specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with
Austria Mikro Systeme International for current information. This product is intended for use in normal commercial applications. Applications
requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical lifesupport or life-sustaining equipment are specifically not recommended without additional processing by Austria Mikro Systeme International for
each application.
Copyright @ 1998, Austria Mikro Systeme International AG, Schloß Premstätten, 8141 Unterpremstätten, Austria. All rights reserved. The
material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner.
Rev. A 9/9 Jul 98
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