PHILIPS UAA2073AM

INTEGRATED CIRCUITS
DATA SHEET
UAA2073AM
Image rejecting front-end
for GSM applications
Product specification
Supersedes data of 1996 Oct 23
File under Integrated Circuits, IC17
1997 Jan 27
Philips Semiconductors
Product specification
Image rejecting front-end
for GSM applications
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.
FEATURES
• Low-noise, wide dynamic range amplifier
• Very low noise figure
• Dual balanced mixer for at least 30 dB on-chip image
rejection
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.
• IF I/Q combination network for 175 MHz
• Down-conversion mixer for closed-loop transmitters
• Independent TX/RX fast on/off power-down modes
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.
• Very small outline packaging
• Very small application (no image filter).
APPLICATIONS
• 900 MHz front-end for GSM hand-portable equipment
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.
• Compact digital mobile communication equipment
• TDMA receivers.
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.
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.
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.
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.
ORDERING INFORMATION
TYPE
NUMBER
UAA2073AM
1997 Jan 27
PACKAGE
NAME
DESCRIPTION
SSOP20 plastic shrink small outline package; 20 leads; body width 4.4 mm
2
VERSION
SOT266-1
Philips Semiconductors
Product specification
Image rejecting front-end
for GSM applications
UAA2073AM
QUICK REFERENCE DATA
Note 1.
SYMBOL
PARAMETER
MIN.
TYP.
MAX.
UNIT
VCC
supply voltage
3.6
3.75
5.3
V
ICC(RX)
receive supply current
21
26
32
mA
ICC(TX)
transmit supply current
9
12
15
mA
NFRX
noise figure on demonstration board (including matching
and PCB losses)
−
3.6
4.7
dB
GCPRX
conversion power gain
19
22
25
dB
IR
image frequency rejection
30
45
−
dB
Tamb
operating ambient temperature
−30
+25
+75
°C
Note
1. For conditions see Chapters “DC characteristics” and “AC characteristics”.
BLOCK DIAGRAM
handbook, full pagewidth
VCC1
n.c.
n.c.
2
3
SBS
UAA2073AM
1
+45oC
4
20
RFINA
RFINB
GND1
5
6
+135oC
LNA
19
7
IFA
IF
COMBINER
IFB
low-noise
amplifier
RECEIVE SECTION
VCC2
RXON
TXON
SXON
GND2
TRANSMIT SECTION
15
RX
11
12
10
CURRENT
REGULATORS
QUADRATURE
PHASE
SHIFTER
TX
IF
MIXER
LO
14
16
LOCAL OSCILLATOR
SECTION
13
18
17
9
LOINA
LOINB
TXINB
8
MGD149
Fig.1 Block diagram.
1997 Jan 27
3
TXINA
TXOIFA
TXOIFB
Philips Semiconductors
Product specification
Image rejecting front-end
for GSM applications
UAA2073AM
PINNING
SYMBOL
PIN
DESCRIPTION
SBS
1
sideband selection (should be
grounded for fLO < fRF)
n.c.
2
not connected
n.c.
3
not connected
VCC1
4
supply voltage for receive and
transmit sections
RFINA
5
RF input A (balanced)
RFINB
6
RF input B (balanced)
GND1
7
ground 1 for receive and transmit
sections
RFINA 5
handbook, halfpage
SBS 1
20 IFA
n.c. 2
19 IFB
n.c. 3
18 LOINA
VCC1 4
17 LOINB
16 GND2
UAA2073AM
TXINA
8
transmit mixer input A (balanced)
RFINB 6
15 VCC2
TXINB
9
transmit mixer input B (balanced)
GND1 7
14 TXOIFA
SXON
10
hardware power-on of LO section
(including buffers to RX and TX)
TXINA 8
13 TXOIFB
RXON
11
hardware power-on for receive
section and LO buffers to RX
TXINB 9
12 TXON
SXON 10
11 RXON
TXON
12
hardware power-on for transmit
section and LO buffers to TX
TXOIFB
13
transmit mixer IF output B
(balanced)
TXOIFA
14
transmit mixer IF output A
(balanced)
VCC2
15
supply voltage for LO section
GND2
16
ground 2 for LO section
LOINB
17
LO input B (balanced)
LOINA
18
LO input A (balanced)
IFB
19
IF output B (balanced)
IFA
20
IF output A (balanced)
1997 Jan 27
MGD150
Fig.2 Pin configuration.
4
Philips Semiconductors
Product specification
Image rejecting front-end
for GSM applications
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.
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 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
1 kΩ load. The path to VCC for the DC current should be
achieved via tuning inductors. The output voltage is limited
to VCC + 3Vbe or 3 diode forward voltage drops.
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:
Fast switching, on/off, of the receive section is controlled
by the hardware input RXON.
• fLO > fRF (SBS = 1)
• fLO < fRF (SBS = 0).
Where fRF is the frequency of the wanted signal.
SBS
handbook, full pagewidth
MIXER
VCC1
IF
amplifier
+45o
IFA
RFINA
RFINB
IF
COMBINER
MIXER
IFB
LNA
GND1
IF
amplifier
+135o
MBH188
RXON
LOIN
Fig.3 Block diagram, receive section.
1997 Jan 27
5
Philips Semiconductors
Product specification
Image rejecting front-end
for GSM applications
UAA2073AM
Local oscillator section
Transmit mixer
The Local Oscillator (LO) input directly drives the two
internal all-pass networks to provide quadrature LO to the
receive mixers.
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 LO differential input impedance is 50 Ω (parallel real
part).
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).
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.
Fast switching, on/off, of the transmit section is controlled
by the hardware input TXON.
This mode is active when the SXON input is HIGH. Table 1
shows status of circuit in accordance with TXON, RXON
and SXON inputs.
to RX
handbook, halfpage
handbook, halfpage
VCC2
TX MIXER
TXOIFA
TXOIFB
LOIN
RXON
TXON
QUAD
SXON
MBH190
TXON
to TX
GND2
TXINB
TXINA
MBH189
LOINA
LOINB
Fig.4 Block diagram, LO section.
1997 Jan 27
Fig.5 Block diagram, transmit mixer.
6
Philips Semiconductors
Product specification
Image rejecting front-end
for GSM applications
UAA2073AM
Table 1 Control of power status
EXTERNAL PIN LEVEL
CIRCUIT MODE OF OPERATION
TXON
RXON
SXON
LOW
LOW
LOW
power-down mode
LOW
HIGH
LOW
RX mode: receive section and LO buffers to RX on
HIGH
LOW
LOW
TX mode: transmit section and LO buffers to TX on
LOW
LOW
HIGH
SX mode: complete LO section on
LOW
HIGH
HIGH
SRX mode: receive section on and SX mode active
HIGH
LOW
HIGH
STX mode: transmit section on and SX mode active
HIGH
HIGH
LOW
receive and transmit sections on; specification not guaranteed
HIGH
HIGH
HIGH
receive and transmit sections on; specification not guaranteed
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
PARAMETER
MIN.
−
VCC
supply voltage
∆GND
difference in ground supply voltage applied between GND1 and GND2 −
Pi(max)
maximum power input
MAX.
UNIT
9
V
0.6
V
−
+20
dBm
Tj(max)
maximum operating junction temperature
−
+150
°C
Pdis(max)
maximum power dissipation in stagnant air
−
250
mW
Tstg
IC storage temperature
−65
+150
°C
HANDLING
Every pin withstands the ESD test in accordance with MIL-STD-883C class 2 (method 3015.5).
THERMAL CHARACTERISTICS
SYMBOL
Rth j-a
1997 Jan 27
PARAMETER
thermal resistance from junction to ambient in free air
7
VALUE
UNIT
120
K/W
Philips Semiconductors
Product specification
Image rejecting front-end
for GSM applications
UAA2073AM
DC CHARACTERISTICS
VCC = 3.75 V; Tamb = 25 °C; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Pins: VCC1 and VCC2
VCC
supply voltage
ICC(RX)
over full temperature range
3.6
3.75
5.3
V
supply current in RX mode
21
26
32
mA
ICC(TX)
supply current in TX mode
9
12
15
mA
ICC(SX)
supply current in SX mode
4.5
5.8
7.0
mA
ICC(SRX)
supply current in SRX mode
23
28
34
mA
ICC(STX)
supply current in STX mode
12.5
15.0
19.5
mA
ICC(PD)
supply current in power-down mode
−
0.01
50
µA
−
1.25
−
V
Pins: SXON, RXON, TXON and SBS
Vth
CMOS threshold voltage
note 1
VIH
HIGH level input voltage
0.7VCC
−
VCC
V
VIL
LOW level input voltage
−0.3
−
0.8
V
IIH
HIGH level static input current
pin at VCC − 0.4 V
−1
−
+1
µA
IIL
LOW level static input current
pin at 0.4 V
−1
−
+1
µA
receive section on
2.0
2.2
2.4
V
receive section on
2.3
3.0
3.8
mA
transmit section on
2.1
2.4
2.6
V
transmit section on
1.8
1.9
2.1
V
receive section on
2.3
2.5
2.8
V
transmit section on
2.3
2.5
2.8
V
Pins: RFINA and RFINB
VI(RFIN)
DC input voltage level
Pins: IFA and IFB
IO(IF)
DC output current
Pins: TXINA and TXINB
VI(TXIN)
DC input voltage level
Pins: TXOIFA and TXOIFB
VO(TXOIF)
DC output voltage level
Pins: LOINA and LOINB
VI(LOIN)
DC input voltage level
Note
1. The referenced inputs should be connected to a valid CMOS input level.
1997 Jan 27
8
Philips Semiconductors
Product specification
Image rejecting front-end
for GSM applications
UAA2073AM
AC CHARACTERISTICS
VCC = 3.75 V; Tamb = −30 to +75 °C; fIF = 175 MHz; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Receive section (receive section on)
RiRX
RF input resistance (real part of
the parallel input impedance)
balanced; at 942.5 MHz
−
150
−
Ω
CiRX
RF input capacitance (imaginary
part of the parallel input
impedance)
balanced; at 942.5 MHz
−
1
−
pF
fiRX
RF input frequency
925
−
960
MHz
RLiRX
return loss on matched RF input
note 1
15
20
−
dB
GCPRX
conversion power gain
differential RF input to
differential IF output matched to
1 kΩ differential
19
22
25
dB
Grip
gain ripple as a function of RF
frequency
note 2
−
0.2
0.5
dB
∆G/T
gain variation with temperature
note 2
−20
−15
−10
mdB/K
DES1
1 dB desensitization input power
interferer frequency offset
3 MHz
−
−30
−
dBm
CP1RX
1 dB input compression point
note 1
−25
−23.0
−
dBm
IP2DRX
half IF spurious rejection
(fRF = fLO + 0.5fIF)
note 2
60
−
−
dB
IP3RX
3rd order intercept point
referenced to the RF input
note 2
−21.5
−15
−
dBm
NFRX
overall noise figure
RF input to differential IF output;
note 3
Tamb = +25°C
−
3.6
4.0
dB
over full temperature range
−
−
4.7
dB
RLRX
typical application IF output load
impedance
balanced
−
1000
−
Ω
CLRX
IF output load capacitance
unbalanced
−
−
2
pF
foRX
IF frequency range
−
175
−
MHz
IR
image frequency rejection
30
45
−
dB
1997 Jan 27
fLO < fRF
9
Philips Semiconductors
Product specification
Image rejecting front-end
for GSM applications
SYMBOL
UAA2073AM
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Local oscillator section (RXON or TXON or SXON = 1)
fiLO
LO input frequency
750
−
785
MHz
RiLO
LO input resistance (real part of
the parallel input impedance)
balanced; at 767.5 MHz
−
80
−
Ω
CiLO
LO input capacitance (imaginary
part of the parallel input
impedance)
balanced; at 767.5 MHz
−
2
−
pF
RLiLO
return loss on matched input
(including power-down mode)
note 2
10
15
−
dB
∆RLiLO
return loss variation between SX, linear S11 variation; note 1
SRX and STX modes
−
20
−
mU
PiLO
LO input power level
−7
−4
0
dBm
RILO
reverse isolation
40
−
−
dB
−
200
Ω
LOIN to RFIN at LO frequency;
note 2
Transmit section (transmit section on)
ZoTX
TX IF output impedance
−
ZLTX
TX IF load impedance
−
1
−
kΩ
CLTX
TX IF load capacitance
−
−
2
pF
RiTX
TX RF input resistance
(real part of the parallel input
impedance)
balanced; at 897.5 MHz
−
200
−
Ω
CiTX
TX RF input capacitance
(imaginary part of the parallel
input impedance)
balanced; at 897.5 MHz
−
1
−
pF
fiTX
TX input frequency
880
−
915
MHz
RLiTX
return loss on matched TX input
note 1
15
20
−
dB
GCPTX
conversion power gain
from 200 Ω to 1 kΩ output;
note 2
5
7.4
10
dB
foTX
TX output frequency
40
−
200
MHz
CP1TX
1 dB input compression point
−22
−17.5
−
dBm
IP2TX
2nd order intercept point
−
+20
−
dBm
IP3TX
3rd order intercept point
−12
−9
−
dBm
NFTX
noise figure
double sideband; notes 2 and 3
−
9.8
12
dB
RITX
reverse isolation
TXIN to LOIN; note 2
40
−
−
dB
ITX
isolation
LOIN to TXIN; note 2
40
−
−
dB
1
5
20
µs
note 1
Timing
tstart
start-up time of each block
Notes
1. Measured and guaranteed only on Philips UAA2073AM demonstration board at Tamb = 25 °C.
2. Measured and guaranteed only on Philips UAA2073AM demonstration board.
3. This value includes printed-circuit board and balun losses on Philips UAA2073AM demonstration board over full
temperature range.
1997 Jan 27
10
Philips Semiconductors
Product specification
Image rejecting front-end
for GSM applications
UAA2073AM
INTERNAL PIN CONFIGURATION
PIN
SYMBOL
1
SBS
10
SXON
DC
VOLTAGE
(V)
EQUIVALENT CIRCUIT
VCC
1
11
RXON
12
TXON
GND
MBH682
4
VCC1
+3.75
15
VCC2
+3.75
7
GND1
0
16
GND2
0
5
RFINA
+2.2
6
RFINB
+2.2
8
TXINA
+2.4
9
TXINB
+2.4
VCC
5, 8
6, 9
GND
MBH683
13
TXOIFB
+1.9
14
TXOIFA
+1.9
VCC
13, 14
GND
1997 Jan 27
11
MBH684
Philips Semiconductors
Product specification
Image rejecting front-end
for GSM applications
PIN
SYMBOL
DC
VOLTAGE
(V)
17
LOINB
+2.5
18
LOINA
+2.5
UAA2073AM
EQUIVALENT CIRCUIT
VCC
17
18
GND
MBH685
19
IFB
+3.0
VCC
19
20
IFA
20
+3.0
GND
GND
MBH686
1997 Jan 27
12
1997 Jan 27
13
TXIN
880 to 915 MHz
RFIN
925 to 960 MHz
15 nH
15 nH
15 nH
C6 1.8 pF
L4
C5 1.8 pF
C1 1.5 pF
L5 15 nH
L3
C3 1.5 pF
L2
1
1
2
UAA2073AM
C25
27
pF
10
9
8
7
R8
680
kΩ
RXON
1
2
C10 3.3 pF
R10
680
kΩ
VCC
390 pF
11
C27
27
pF
L13 180 nH
R2
180 Ω
MGD151
C32 6.8 pF
C31 6.8 pF
C14
L14 180 nH
390 pF
C13
27 pF
L7 12 nH
180 Ω
R1
C15
27 pF
C9 3.3 pF
L8 12 nH
L15 100 nH
C34
8.2 pF
L16
100
nH
C11
IFB
IFA
27 pF
C12
C18
3.9 pF
220 pF
C19
3.9 pF
12
TXON
VCC
L9
22
nH
L12
120
nH
L11
120
nH
13
14
15
16
5
6
17
4
18
19
2
3
20
1
Fig.6 Philips demonstration board diagram.
R9
680
kΩ
SXON
C23
27 pF
R5
680 kΩ
R4
680 Ω
VCC
R3
680 Ω
C33 8.2 pF
TXOIF
40 to
200 MHz
LOIN
750 to
785 MHz
IFO
175 MHz
Image rejecting front-end
for GSM applications
120 pF
C28
C26
27
pF
2
27 pF
C7
L6
27 nH
L1
18 nH
C24
1 nF
27 pF
C8
27 pF
27 pF
C4
C2
VCC
C20
27 pF
SBS
handbook, full pagewidth
C17
Philips Semiconductors
Product specification
UAA2073AM
APPLICATION INFORMATION
Philips Semiconductors
Product specification
Image rejecting front-end
for GSM applications
UAA2073AM
Table 2 UAA2073AM demonstration board parts list
PART
VALUE
SIZE
LOCATION
PART
Resistors
R1
VALUE
SIZE
LOCATION
Inductors
180 Ω
0805
TXOIF
L1
18 nH
0805
RFIN
R2
180 Ω
0805
TXOIF
L2
15 nH
0805
RFIN
R3
680 Ω
0805
IFO
L3
15 nH
0805
RFIN
R4
680 Ω
0805
IFO
L4
15 nH
0805
TXIN
R5
680 kΩ
0805
SBS
L5
15 nH
0805
TXIN
R8
680 kΩ
0805
RXON
L6
27 nH
0805
TXIN
R9
680 kΩ
0805
SXON
L7
12 nH
0805
LOIN
R10
680 kΩ
0805
TXON
L8
12 nH
0805
LOIN
L9
22 nH
0805
LOIN
120 nH
1008
IFO
Capacitors
C1
1.5 pF
0805
RFIN
L11
C2
27 pF
0805
RFIN
L12
120 nH
1008
IFO
C3
1.5 pF
0805
RFIN
L13
180 nH
0805
TXOIF
180 nH
0805
TXOIF
C4
27 pF
0805
RFIN
L14
C5
1.8 pF
0805
TXIN
L15
100 nH
1008
IFO
C6
1.8 pF
0805
TXIN
L16
100 nH
1008
IFO
C7
27 pF
0805
TXIN
C8
27 pF
0805
TXIN
C9
3.3 pF
0805
LOIN
C10
3.3 pF
0805
LOIN
C11
27 pF
0805
LOIN
C12
27 pF
0805
LOIN
C13
390 pF
0805
TXOIF
C14
390 pF
0805
TXOIF
C15
27 pF
0805
VCCLO
C17
3.9 pF
0805
IFO
C18
3.9 pF
0805
IFO
C19
220 pF
0805
IF/VCC
C20
27 pF
0805
SBS
C23
27 pF
0805
VCCLNA
C24
1 nF
0805
VCCLNA
C25
27 pF
0805
RXON
C26
27 pF
0805
SXON
C27
27 pF
0805
TXON
C28
120 pF
0805
VCC
C31
6.8 pF
0805
TXOIF
C32
6.8 pF
0805
TXOIF
C33
8.2 pF
0805
IFO
C34
8.2 pF
0805
IFO
1997 Jan 27
Other components
COMPONENT
DESCRIPTIONS
IC1
UAA2073AM
SMA/RIM
sockets for RF and IF inputs/outputs
SMB
VCC socket
Component manufacturers
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.
14
Philips Semiconductors
Product specification
Image rejecting front-end
for GSM applications
UAA2073AM
PACKAGE OUTLINE
SSOP20: plastic shrink small outline package; 20 leads; body width 4.4 mm
D
SOT266-1
E
A
X
c
y
HE
v M A
Z
11
20
Q
A2
A
(A 3)
A1
pin 1 index
θ
Lp
L
1
10
detail X
w M
bp
e
0
2.5
5 mm
scale
DIMENSIONS (mm are the original dimensions)
UNIT
A
max.
A1
A2
A3
bp
c
D (1)
E (1)
e
HE
L
Lp
Q
v
w
y
Z (1)
θ
mm
1.5
0.15
0
1.4
1.2
0.25
0.32
0.20
0.20
0.13
6.6
6.4
4.5
4.3
0.65
6.6
6.2
1.0
0.75
0.45
0.65
0.45
0.2
0.13
0.1
0.48
0.18
10
0o
Note
1. Plastic or metal protrusions of 0.20 mm maximum per side are not included.
OUTLINE
VERSION
REFERENCES
IEC
JEDEC
EIAJ
ISSUE DATE
90-04-05
95-02-25
SOT266-1
1997 Jan 27
EUROPEAN
PROJECTION
15
o
Philips Semiconductors
Product specification
Image rejecting front-end
for GSM applications
UAA2073AM
If wave soldering cannot be avoided, the following
conditions must be observed:
SOLDERING
Introduction
• A double-wave (a turbulent wave with high upward
pressure followed by a smooth laminar wave)
soldering technique should be used.
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.
• 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).
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” (order code 9398 652 90011).
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.
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.
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.
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.
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.
Preheating is necessary to dry the paste and evaporate
the binding agent. Preheating duration: 45 minutes at
45 °C.
Wave soldering
Wave soldering is not 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.
1997 Jan 27
16
Philips Semiconductors
Product specification
Image rejecting front-end
for GSM applications
UAA2073AM
DEFINITIONS
Data sheet status
Objective specification
This data sheet contains target or goal specifications for product development.
Preliminary specification
This data sheet contains preliminary data; supplementary data may be published later.
Product specification
This 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 27
17
Philips Semiconductors
Product specification
Image rejecting front-end
for GSM applications
UAA2073AM
NOTES
1997 Jan 27
18
Philips Semiconductors
Product specification
Image rejecting front-end
for GSM applications
UAA2073AM
NOTES
1997 Jan 27
19
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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
Internet: http://www.semiconductors.philips.com
© Philips Electronics N.V. 1997
SCA53
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
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.
Printed in The Netherlands
437027/1200/02/pp20
Date of release: 1997 Jan 27
Document order number:
9397 750 01642