Product specification
Supersedes data of 1996 Oct 23
File under Integrated Circuits, IC17
1997 Jan 27
Page 2
Philips SemiconductorsProduct specification
Image rejecting front-end
for GSM applications
FEATURES
• Low-noise, wide dynamic range amplifier
• Very low noise figure
• Dual balanced mixer for at least 30 dB on-chip image
rejection
• IF I/Q combination network for 175 MHz
• Down-conversion mixer for closed-loop transmitters
• Independent TX/RX fast on/off power-down modes
• Very small outline packaging
• Very small application (no image filter).
APPLICATIONS
• 900 MHz front-end for GSM hand-portable equipment
• Compact digital mobile communication equipment
• TDMA receivers.
GENERAL DESCRIPTION
UAA2073AM contains both a receiver front-end and a high
frequency transmit mixer intended for GSM
(Global System for Mobile communications) cellular
telephones. Designed in an advanced BiCMOS process it
combines high performance with low power consumption
and a high degree of integration, thus reducing external
component costs and total front-end size.
The main advantage of the UAA2073AM is its ability to
provide over 30 dB of image rejection. Consequently, the
image filter between the LNA and the mixer is suppressed
and the duplexer design is eased, compared with a
conventional front-end design.
UAA2073AM
Image rejection is achieved in the internal architecture by
two RF mixers in quadrature and two all-pass filters in
I and Q IF channels that phase shift the IF by 45° and 135°
respectively. The two phase shifted IFs are recombined
and buffered to furnish the IF output signal.
This means that signals presented at the RF input at
LO − IF frequency are rejected through this signal
processing while signals at LO + IF frequency can form the
IF signal.
The receiver section consists of a low-noise amplifier that
drives a quadrature mixer pair. The IF amplifier has
on-chip 45° and 135° phase shifting and a combining
network for image rejection.The IF driver has differential
open-collector type outputs.
The LO part consists of an internal all-pass type phase
shifter to provide quadrature LO signals to the receive
mixers. The all-pass filters outputs are buffered before
being fed to the receive mixers.
The transmit section consists of a down-conversion mixer
and a transmit IF driver stage. In the transmit mode an
internal LO buffer is used to drive the transmit IF
down-conversion mixer.
All RF and IF inputs or outputs are balanced to reduce
EMC issues.
Fast power-up switching is possible. A synthesizer-on
(SX) mode enables LO buffers independent of the other
circuits. When SXON pin is HIGH, all internal buffers on
the LO path of the circuit are turned on, thus minimizing
LO pulling when remainder of receive chain is
powered-up.
ORDERING INFORMATION
TYPE
NUMBER
UAA2073AMSSOP20 plastic shrink small outline package; 20 leads; body width 4.4 mmSOT266-1
1997 Jan 272
NAMEDESCRIPTIONVERSION
PACKAGE
Page 3
Philips SemiconductorsProduct specification
Image rejecting front-end
UAA2073AM
for GSM applications
QUICK REFERENCE DATA
Note 1.
SYMBOLPARAMETERMIN.TYP.MAX.UNIT
V
CC
I
CC(RX)
I
CC(TX)
NF
RX
G
CPRX
IRimage frequency rejection3045−dB
T
amb
Note
1. For conditions see Chapters “DC characteristics” and “AC characteristics”.
transmit sections
RFINA5RF input A (balanced)
RFINB6RF input B (balanced)
GND17ground 1 for receive and transmit
sections
TXINA8transmit mixer input A (balanced)
TXINB9transmit mixer input B (balanced)
SXON10hardware power-on of LO section
(including buffers to RX and TX)
RXON11hardware power-on for receive
section and LO buffers to RX
TXON12hardware power-on for transmit
section and LO buffers to TX
TXOIFB13transmit mixer IF output B
(balanced)
TXOIFA14transmit mixer IF output A
(balanced)
V
CC2
15supply voltage for LO section
GND216ground 2 for LO section
LOINB17LO input B (balanced)
LOINA18LO input A (balanced)
IFB19IF output B (balanced)
IFA20IF output A (balanced)
)
handbook, halfpage
UAA2073AM
SBS
1
n.c.
2
n.c.
3
V
4
CC1
RFINA
5
UAA2073AM
6
RFINB
7
GND1
TXINA
8
9
TXINB
10
SXONRXON
Fig.2 Pin configuration.
MGD150
20
19
18
17
16
15
14
13
12
11
IFA
IFB
LOINA
LOINB
GND2
V
CC2
TXOIFA
TXOIFB
TXON
1997 Jan 274
Page 5
Philips SemiconductorsProduct specification
Image rejecting front-end
for GSM applications
FUNCTIONAL DESCRIPTION
Receive section
The circuit contains a low-noise amplifier followed by two
high dynamic range mixers. These mixers are of the
Gilbert-cell type. The whole internal architecture is fully
differential.
The local oscillator, shifted in phase to 45° and 135°,
mixes the amplified RF to create I and Q channels.
The two I and Q channels are buffered, phase shifted by
45° and 135° respectively, amplified and recombined
internally to realize the image rejection.
Pin SBS allows sideband selection:
• f
LO>fRF
• fLO<fRF (SBS = 0).
Where fRF is the frequency of the wanted signal.
(SBS = 1)
UAA2073AM
Balanced signal interfaces are used for minimizing
crosstalk due to package parasitics. The RF differential
input impedance is 150 Ω (parallel real part), chosen to
minimize current consumption at best noise performance.
The IF output is differential and of the open-collector type,
tuned for 175 MHz. Typical application will load the output
with a 680 Ω resistor load at each IF output, plus a 1 kΩ
load consisting in the input impedance of the IF filter or in
the input impedance of the matching network for the IF
filter. The power gain refers to the available power on this
1kΩ load. The path to V
achieved via tuning inductors. The output voltage is limited
to VCC+3Vbe or 3 diode forward voltage drops.
Fast switching, on/off, of the receive section is controlled
by the hardware input RXON.
for the DC current should be
CC
handbook, full pagewidth
V
CC1
RFINA
RFINB
GND1
LNA
MIXER
MIXER
LOIN
IF
amplifier
IF
amplifier
+45
+135
o
o
RXON
Fig.3 Block diagram, receive section.
SBS
IF
COMBINER
MBH188
IFA
IFB
1997 Jan 275
Page 6
Philips SemiconductorsProduct specification
Image rejecting front-end
for GSM applications
Local oscillator section
The Local Oscillator (LO) input directly drives the two
internal all-pass networks to provide quadrature LO to the
receive mixers.
The LO differential input impedance is 50 Ω (parallel real
part).
A synthesizer-on (SX) mode is used to power-up the
buffering on the LO inputs, minimizing the pulling effect on
the external VCO when entering transmit or receive
modes.
This mode is active when the SXON input is HIGH. Table 1
shows status of circuit in accordance with TXON, RXON
and SXON inputs.
handbook, halfpage
to RX
UAA2073AM
Transmit mixer
This mixer is used for down-conversion to the transmit IF.
Its inputs are coupled to the transmit RF and down-convert
it to a modulated transmit IF frequency which is phase
locked with the baseband modulation.
The transmit mixer provides a differential input at 200 Ω
and a differential output driver buffer for a 1 kΩ load.
The IF outputs are low impedance (emitter followers).
Fast switching, on/off, of the transmit section is controlled
by the hardware input TXON.
V
CC2
RXON
TXON
SXON
GND2
LOINA
QUAD
LOINB
Fig.4 Block diagram, LO section.
to TX
MBH189
handbook, halfpage
LOIN
Fig.5 Block diagram, transmit mixer.
TX MIXER
TXOIFA
TXOIFB
MBH190
TXINBTXON
TXINA
1997 Jan 276
Page 7
Philips SemiconductorsProduct specification
Image rejecting front-end
UAA2073AM
for GSM applications
Table 1 Control of power status
EXTERNAL PIN LEVEL
TXONRXONSXON
LOWLOWLOWpower-down mode
LOWHIGHLOWRX mode: receive section and LO buffers to RX on
HIGHLOWLOWTX mode: transmit section and LO buffers to TX on
LOWLOWHIGHSX mode: complete LO section on
LOWHIGHHIGHSRX mode: receive section on and SX mode active
HIGHLOWHIGHSTX mode: transmit section on and SX mode active
HIGHHIGHLOWreceive and transmit sections on; specification not guaranteed
HIGHHIGHHIGHreceive and transmit sections on; specification not guaranteed
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOLPARAMETERMIN.MAX.UNIT
V
CC
∆GNDdifference in ground supply voltage applied between GND1 and GND2 −0.6V
P
i(max)
T
j(max)
P
dis(max)
T
stg
supply voltage−9V
maximum power input−+20dBm
maximum operating junction temperature−+150°C
maximum power dissipation in stagnant air−250mW
IC storage temperature−65+150°C
CIRCUIT MODE OF OPERATION
HANDLING
Every pin withstands the ESD test in accordance with MIL-STD-883C class 2 (method 3015.5).
THERMAL CHARACTERISTICS
SYMBOLPARAMETERVALUEUNIT
R
th j-a
thermal resistance from junction to ambient in free air120K/W
1997 Jan 277
Page 8
Philips SemiconductorsProduct specification
Image rejecting front-end
UAA2073AM
for GSM applications
DC CHARACTERISTICS
VCC= 3.75 V; T
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX. UNIT
Pins: V
V
CC
I
CC(RX)
I
CC(TX)
I
CC(SX)
I
CC(SRX)
I
CC(STX)
I
CC(PD)
CC1
and V
Pins: SXON, RXON, TXON and SBS
V
th
V
IH
V
IL
I
IH
I
IL
Pins: RFINA and RFINB
V
I(RFIN)
Pins: IFA and IFB
I
O(IF)
Pins: TXINA and TXINB
V
I(TXIN)
Pins: TXOIFA and TXOIFB
V
O(TXOIF)
Pins: LOINA and LOINB
V
I(LOIN)
=25°C; unless otherwise specified.
amb
CC2
supply voltageover full temperature range3.63.755.3V
supply current in RX mode212632mA
supply current in TX mode91215mA
supply current in SX mode4.55.87.0mA
supply current in SRX mode232834mA
supply current in STX mode12.515.019.5mA
supply current in power-down mode−0.0150µA
CMOS threshold voltagenote 1−1.25−V
HIGH level input voltage0.7V
CC
−V
CC
V
LOW level input voltage−0.3−0.8V
HIGH level static input currentpin at VCC− 0.4 V−1−+1µA
LOW level static input currentpin at 0.4 V−1−+1µA
DC input voltage levelreceive section on2.02.22.4V
DC output currentreceive section on2.33.03.8mA
DC input voltage leveltransmit section on2.12.42.6V
DC output voltage leveltransmit section on1.81.92.1V
DC input voltage levelreceive section on2.32.52.8V
transmit section on2.32.52.8V
Note
1. The referenced inputs should be connected to a valid CMOS input level.
1997 Jan 278
Page 9
Philips SemiconductorsProduct specification
Image rejecting front-end
UAA2073AM
for GSM applications
AC CHARACTERISTICS
V
= 3.75 V; T
CC
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
Receive section (receive section on)
R
iRX
C
iRX
f
iRX
RL
iRX
G
CPRX
G
rip
∆G/Tgain variation with temperaturenote 2−20−15−10mdB/K
DES11 dB desensitization input power interferer frequency offset
All surface mounted resistors and capacitors are from
Philips Components. The small value capacitors are
multilayer ceramic with NPO dielectric. The inductors are
from Coilcraft UK.
CC
socket
1997 Jan 2714
Page 15
Philips SemiconductorsProduct specification
Image rejecting front-end
for GSM applications
PACKAGE OUTLINE
SSOP20: plastic shrink small outline package; 20 leads; body width 4.4 mm
20
D
c
y
Z
11
E
H
UAA2073AM
SOT266-1
A
X
v M
E
A
pin 1 index
110
w M
b
e
DIMENSIONS (mm are the original dimensions)
UNITA
mm
Note
1. Plastic or metal protrusions of 0.20 mm maximum per side are not included.
A
max.
1.5
A2A
1
0.1501.4
1.2
0.25
b
3
p
0.32
0.20
p
cD
0.20
6.6
0.13
6.4
02.55 mm
scale
(1)E(1)
eHELLpQZywv θ
4.5
0.651.00.2
4.3
6.6
6.2
Q
A
2
A
1
detail X
0.65
0.75
0.45
0.45
(A )
L
p
L
A
3
θ
0.130.1
0.48
0.18
(1)
o
10
o
0
OUTLINE
VERSION
SOT266-1
IEC JEDEC EIAJ
REFERENCES
1997 Jan 2715
EUROPEAN
PROJECTION
ISSUE DATE
90-04-05
95-02-25
Page 16
Philips SemiconductorsProduct specification
Image rejecting front-end
for GSM applications
SOLDERING
Introduction
There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our
“IC Package Databook”
Reflow soldering
Reflow soldering techniques are suitable for all SSOP
packages.
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
to the printed-circuit board by screen printing, stencilling or
pressure-syringe dispensing before package placement.
Several techniques exist for reflowing; for example,
thermal conduction by heated belt. Dwell times vary
between 50 and 300 seconds depending on heating
method. Typical reflow temperatures range from
215 to 250 °C.
Preheating is necessary to dry the paste and evaporate
the binding agent. Preheating duration: 45 minutes at
45 °C.
Wave soldering
Wave soldering isnot recommended for SSOP packages.
This is because of the likelihood of solder bridging due to
closely-spaced leads and the possibility of incomplete
solder penetration in multi-lead devices.
(order code 9398 652 90011).
UAA2073AM
If wave soldering cannot be avoided, the following
conditions must be observed:
• A double-wave (a turbulent wave with high upward
pressure followed by a smooth laminar wave)
soldering technique should be used.
• The longitudinal axis of the package footprint must
be parallel to the solder flow and must incorporate
solder thieves at the downstream end.
Even with these conditions, only consider wave
soldering SSOP packages that have a body width of
4.4 mm, that is SSOP16 (SOT369-1) or
SSOP20 (SOT266-1).
During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.
Maximum permissible solder temperature is 260 °C, and
maximum duration of package immersion in solder is
10 seconds, if cooled to less than 150 °C within
6 seconds. Typical dwell time is 4 seconds at 250 °C.
A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.
Repairing soldered joints
Fix the component by first soldering two diagonallyopposite end leads. Use only a low voltage soldering iron
(less than 24 V) applied to the flat part of the lead. Contact
time must be limited to 10 seconds at up to 300 °C. When
using a dedicated tool, all other leads can be soldered in
one operation within 2 to 5 seconds between
270 and 320 °C.
1997 Jan 2716
Page 17
Philips SemiconductorsProduct specification
Image rejecting front-end
UAA2073AM
for GSM applications
DEFINITIONS
Data sheet status
Objective specificationThis data sheet contains target or goal specifications for product development.
Preliminary specificationThis data sheet contains preliminary data; supplementary data may be published later.
Product specificationThis data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
1997 Jan 2717
Page 18
Philips SemiconductorsProduct specification
Image rejecting front-end
for GSM applications
UAA2073AM
NOTES
1997 Jan 2718
Page 19
Philips SemiconductorsProduct specification
Image rejecting front-end
for GSM applications
UAA2073AM
NOTES
1997 Jan 2719
Page 20
Philips Semiconductors – a worldwide company
Argentina: see South America
Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113,
United States: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409,
Tel. +1 800 234 7381
Uruguay: see South America
Vietnam: see Singapore
Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD,
Tel. +381 11 625 344, Fax.+381 11 635 777
For all other countries apply to: Philips Semiconductors, Marketing & Sales Communications,
Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
Internet: http://www.semiconductors.philips.com
Printed in The Netherlands437027/1200/02/pp20 Date of release: 1997 Jan 27Document order number: 9397 750 01642
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