Product specification
Supersedes data of 1995 Mar 16
File under Integrated Circuits, IC02
1996 Oct 10
Page 2
Philips SemiconductorsProduct specification
1.3 GHz universal bus-controlled
TV synthesizer
FEATURES
• Complete 1.3 GHz single chip system
• Four PNP band switch buffers (40 mA)
• 33 V output tuning voltage
• In-lock detector
• 15-bit programmable divider
• Programmable reference divider ratio
(512, 640 or 1024)
• Programmable charge-pump current (60 or 280 µA)
• Varicap drive disable
2
• Universal bus protocol I
TSA5520/TSA5521 I2C-bus mode only includes the
write mode; if both read and write modes are required
the TSA5526/TSA5527 devices should be selected):
– bus protocol for 18 or 19 bits transmission
(3-wire bus)
– extra protocol for 27 bits for test and features
(3-wire bus)
– address plus 4 data bytes transmission (I2C-bus)
– three independent I2C-bus addresses
• Low power and low radiation.
C-bus or 3-wire bus (the
TSA5520; TSA5521
APPLICATIONS
• TV tuners and front ends
• VCR tuners.
ORDERING INFORMATION
TYPE NUMBER
NAMEDESCRIPTIONVERSION
TSA5520MSSOP16plastic shrink small outline package; 16 leads; body width 4.4 mmSOT369-1
TSA5520TSO16plastic small outline package; 16 leads; body width 3.9 mmSOT109-1
TSA5521MSSOP16plastic shrink small outline package; 16 leads; body width 4.4 mmSOT369-1
TSA5521TSO16plastic small outline package; 16 leads; body width 3.9 mmSOT109-1
PACKAGE
1996 Oct 102
Page 3
Philips SemiconductorsProduct specification
1.3 GHz universal bus-controlled
TSA5520; TSA5521
TV synthesizer
QUICK REFERENCE DATA
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
V
CC1
V
CC2
I
CC1
I
CC2
f
RF
V
i(RF)
f
xtal
I
o(PNP)
P
tot
T
stg
T
amb
Notes
1. One band switch buffer ON with 40 mA.
2. One buffer ON, I
3. The power dissipation is calculated as follows:
P
D
supply voltage (+5 V)4.5−5.5V
band switch supply voltage (12 V)V
CC1
1213.5V
supply current−2025mA
band switch supply currentnote 1−5055mA
RF input frequency64−1300MHz
RF input voltage80 to 150 MHz−25−+3dBm
150 MHz to 1 GHz−28−+3dBm
1 to 1.3 GHz−15−+3dBm
crystal oscillator input frequency3.24.04.48MHz
PNP band switch buffers output current note 24−50mA
total power dissipationnote 3−250400mW
IC storage temperature−40−+150°C
operating ambient temperature−20−+85°C
= 40 mA; two buffers ON, maximum sum of Io= 50 mA.
o
V
CC1ICC1VCC2ICC2Io
–()I
V
o
CE satPNP()
V33 2⁄()
2
27 kΩ⁄+×+×+×=
1996 Oct 103
Page 4
Philips SemiconductorsProduct specification
1.3 GHz universal bus-controlled
TV synthesizer
GENERAL DESCRIPTION
The device is a single-chip PLL frequency synthesizer
designed for TV and VCR tuning systems. The circuit
consists of a divide-by-eight prescaler with its own
preamplifier, a 15-bit programmable divider, a crystal
oscillator and its programmable reference divider and a
phase/frequency detector combined with a charge-pump
which drives the tuning amplifier and the 33 V output.
Four high-current PNP band switch buffers are provided
for band switching. Two PNP buffers can be switched on
simultaneously. The sum of the collector currents is limited
to 50 mA.
Depending on the reference divider ratio (512, 640 or
1024), the phase comparator operates at 3.90625 kHz,
6.25 kHz or 7.8125 kHz using a 4 MHz crystal.
The lock detector output is LOW when the PLL loop is
locked. In the test mode, this output is used as a test
output for f
and 1/2f
ref
controlled in accordance with the I2C-bus format or the
3-wire bus format depending on the voltage applied to the
SW input (see Table 2).
2
I
C-bus format (SW = LOW)
(see Table 6). The device can be
div
TSA5520; TSA5521
The device has three independent I2C-bus addresses
which can be selected by applying a specific voltage on the
CE input (see Table 5). The general address C2 is always
valid. When the I2C-bus format is fully used, TSA5520 and
TSA5521 are equal.
3-wire bus format (SW = V
Data is transmitted to the device during a HIGH level on
the CE input (enable line pin 15). The device is compatible
with 18-bit and 19-bit data formats. The first four bits are
used to program the PNP band switch buffers and the
remaining bits are used to control the programmable
divider. A 27-bit data format may also be used to set the
charge-pump current, the reference divider ratio and for
test purposes. The difference between TSA5520 and
TSA5521 are given in Table 1.
When the 27-bit format is used, the TSA5520 and
TSA5521 are equal and the reference divider is controlled
by the RSA and RSB bits (see Table 7). More details are
given in Chapter “Functional description” Section “3-wire
bus mode (SW = open-circuit or V
Figs 3, 4 and 5”.
or open-circuit)
CC1
); see
CC1
Five serial bytes (including address byte) are required to
address the device, select the VCO frequency, program
the four PNP band switch buffers, set the charge-pump
current and the reference divider ratio.
Table 1 Differences between TSA5520 and TSA5521
TYPE NUMBERDATA WORDREFERENCE DIVIDERFREQUENCY STEP (kHz)
TSA552018-bit512
TSA552019-bit1024
TSA552118-bit or 19-bit640
(1)
(2)
(1)
62.5
31.25
Notes
1. The selection of the reference divider is given by an automatic identification of the data word length.
2. The reference divider is set to 640 at power-on reset.
50
1996 Oct 104
Page 5
Philips SemiconductorsProduct specification
1.3 GHz universal bus-controlled
TV synthesizer
BLOCK DIAGRAM
handbook, full pagewidth
RF
XTAL
SCL
SDA
CE
SW
1
16
OSCILLATOR
13
14
15
11
AMP
XTAL
POWER-ON
RESET
2
I C/3-WIRE BUS
RECEIVER
PRESCALER
DIVIDE-BY-8
DIVIDER
512/640/1024
RSA
RSB
PROGRAMMABLE
15-BIT FREQUENCY
4-BIT BAND SWITCH
15-BIT
DIVIDER
REGISTER
REGISTER
f
div
f
ref
GATE
DIGITAL
PHASE
COMPARATOR
T2,T1,T0
IN-LOCK
DETECTOR
LOCK
RSA,RSB
7-BIT CONTROL
REGISTER
TSA5520; TSA5521
9
CP
10
V
tune
CHARGE
PUMP
CP
AMP
LOGIC
OS
3
V
CC1
2
V
EE
TSA5520
TSA5521
8
4
V
BS17BS26BS35BS4
CC2
Fig.1 Block diagram.
T2,T1,T0
12
MKA965
LOCK
1996 Oct 105
Page 6
Philips SemiconductorsProduct specification
1.3 GHz universal bus-controlled
TV synthesizer
PINNING
SYMBOL PINDESCRIPTION
RF1RF signal input
V
EE
V
CC1
V
CC2
BS45PNP band switch buffer output 4
BS36PNP band switch buffer output 3
BS27PNP band switch buffer output 2
BS18PNP band switch buffer output 1
CP9charge-pump output
V
2ground
3supply voltage (+5 V)
4band switch supply voltage (+12 V)
10tuning voltage output
2
C-bus or
3-wire
TSA5520; TSA5521
Fig.2 Pin configuration.
FUNCTIONAL DESCRIPTION
The device is controlled via the I2C-bus or the 3-wire bus
depending on the voltage applied to the SW input (pin 11).
A HIGH level on the SW input enables the 3-wire bus
inputs which are Chip Enable (CE), serial data input (SDA)
and serial clock input (SCL). A LOW level on the SW input
enables the I2C-bus inputs which are CE [Address
Selection (AS) input], serial data input/output (SDA) and
serial clock input (SCL). The bus format selection is given
in Table 2.
2
C-bus mode (SW = LOW); see Table 3
I
Data bytes can be sent to the device after the address
transmission (first byte). Four data bytes are required to
fully program the device. The bus receiver has an
auto-increment facility which permits the programming of
the device within one single transmission
(address + 4 data bytes).
The device can also be partially programmed providing
that the first data byte following the address is Divider
Byte 1 (DB1) or the Control Byte (CB). The bits in the data
bytes are defined in Table 3.
The first bit of the first data byte transmitted indicates
whether frequency data (first bit = 0) or control and band
switch data (first bit = 1) will follow. Until an I
2
C-bus STOP
command is sent by the controller, additional data bytes
can be entered without the need to re-address the device.
The frequency register is loaded after the 8th clock pulse
of the second Divider Byte (DB2), the control register is
loaded after the 8th clock pulse of the Control Byte (CB)
and the band switch register is loaded after the 8th clock
pulse of the Band switch Byte (BB).
2
C-bus address selection
I
The module address contains programmable address bits
(MA1 and MA0) which offer the possibility of having
several synthesizers (up to 3) in one system by applying a
specific voltage to the CE input.
The relationship between MA1 and MA0 and the input
voltage applied to the CE input is given in Table 5.
Address Byte (ADB)11000MA1MA00A
Divider Byte 1 (DB1)0N14N13N12N11N10N9N8A
Divider Byte 2 (DB2)N7N6N5N4N3N2N1N0A
Control Byte (CB)1CPT2T1T0RSARSBOSA
Band switch Byte (BB)XXXXBS4BS3BS2BS1A
Table 4 Description of Table 3
2
C BUS MODE
SYMBOLDESCRIPTION
Aacknowledge
MA1 and MA0programmable address bits (see Table 5)
14
N14 to N0programmable divider bits; N = N14 × 2
+ N13 × 213+ ... + N1 × 2+N0
CPcharge-pump current; CP = 0 = 60 µA; CP = 1 = 280 µA
T2 to T0test bits (see Table 6); for normal operation T2 = 0, T1 = 0 and T0 = 1
RSA and RSBreference divider ratio select bits (see Table 7)
OStuning amplifier control bit; for normal operation OS = 0 and tuning voltage is ON;
when OS = 1 tuning voltage is OFF (high impedance)
BS4 to BS1PNP band switch buffers control bits; when BS
= 0 buffer n is OFF;
n
when BSn= 1 buffer n is ON
Xdon’t care
Table 5 I2C-bus address selection
VOLTAGE APPLIED TO THE
CE INPUT (SW = LOW)
0 to 0.1V
CC1
MA1MA0
00
Always valid01
0.4V
0.9V
CC1
CC1
to 0.6V
to V
CC1
CC1
10
11
1996 Oct 107
Page 8
Philips SemiconductorsProduct specification
1.3 GHz universal bus-controlled
TV synthesizer
3-wire bus mode (SW = open-circuit or V
see Figs 3, 4 and 5
During a HIGH level on the CE input, the data is clocked
into the data register at the HIGH-to-LOW transition of the
clock pulse. The first four bits control the band switch
buffers and are loaded into the internal band switch
register on the 5th rising edge of the clock pulse.
The frequency bits are loaded into the frequency register
at the HIGH-to-LOW transition of the chip enable line when
an 18-bit or 19-bit data word is transmitted.
At power-on the charge-pump current is set to 280 µA, the
tuning voltage output is disabled (V
tune
= 33 V in
application; see Fig.12), the test bits T2, T1 and T0 are set
to the normal mode and RSB is set to 1 (TSA5520) or 0
(TSA5521). When an 18-bit data word is transmitted, the
most significant bit of the divider N14 is internally set to 0
and bit RSA is set to 1. When a 19-bit data word is
transmitted, bit RSA is set to 0.
When a 27-bit word is transmitted, the frequency bits are
loaded into the frequency register on the 20th rising edge
of the clock pulse and the control bits at the HIGH-to-LOW
transition of the chip enable line. In this mode, the
reference divider is given by the RSA and RSB bits (see
Table 7). The test bits T2, T1 and T0, the charge-pump
bit CP, the ratio select bit RSB and the OS bit can only be
selected or changed with a 27-bit transmission. They
remain programmed if an 18-bit or a 19-bit transmission
CC1
);
TSA5520; TSA5521
occurs. Only RSA is controlled by the transmission length
when the 18-bit or 19-bit format is used.
A data word of less than 18 bits will not affect the
frequency register of the device. The definition of the bits
is unchanged compared to the I2C bus mode.
The power-on detection threshold voltage V
V
= 2 V at room temperature. Below this threshold, the
CC1
device is reset to the power-on state described above.
Table 6 Test bits
T2T1T0DEVICE OPERATION
001normal mode
01Xcharge-pump is OFF
110charge-pump is sinking current
111charge-pump is sourcing current
100f
101
is available at LOCK output
ref
1
⁄2f
is available at LOCK output
div
Table 7 Ratio select bits
RSARSBREFERENCE DIVIDER
X0640
011024
11512
is fixed to
POR
For TSA5520 bit RSB =1 at power-on; the reference divider is 512 or 1024.
For TSA5521 bit RSB = 0 at power-on; the reference divider is 640.
For TSA5520/TSA5521 the value of RSB can also be programmed by using the 27-bit data format. When returning to the normal mode, bit RSB remains
as programmed with the 27-bit data word.
Fig.3 Normal mode; 18-bit data format (RSA = 1).
1996 Oct 108
Page 9
Philips SemiconductorsProduct specification
1.3 GHz universal bus-controlled
TSA5520; TSA5521
TV synthesizer
For TSA5520 bit RSB = 1 at power-on; the reference divider is 512 or 1024.
For TSA5521 bit RSB = 0 at power-on; the reference divider is 640.
For TSA5520/TSA5521 the value of RSB can also be programmed by using the 27-bit data format. When returning to the normal mode, bit RSB remains
as programmed with the 27-bit data word.
Fig.4 Normal mode; 19-bit data format (RSA = 0).
For TSA5520 bit RSB = 1 at power-on; the reference divider is 512 or 1024.
For TSA5521 bit RSB = 0 at power-on; the reference divider is 640.
For TSA5520/TSA5521 the value of RSB can also be programmed by using the 27-bit data format. When returning to the normal mode, bit RSB remains
as programmed with the 27-bit data word.
Fig.5 Test and features mode; 27-bit data format.
1996 Oct 109
Page 10
Philips SemiconductorsProduct specification
1.3 GHz universal bus-controlled
TSA5520; TSA5521
TV synthesizer
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOLPARAMETERCONDITIONSMIN.MAX.UNIT
V
CC1
V
CC2
V
i(RF)
V
o(BSn)
I
o(BSn)
V
o(CP)
V
o(tune)
V
i(SW)
V
o(LOCK)
V
i(SCL)
V
i/o(SDA)
I
o(SDA)
V
i(CE)
V
i(xtal)
T
stg
T
j
t
sc
supply voltage; +5 V (pin 3)−0.3+6.0V
band switch supply voltage; +12 V (pin 4)−0.3+16V
prescaler input voltage−0.3V
band switch buffers output voltage
−0.3V
CC1
CC2
V
V
(pins 5 to 8)
band switch buffers output current−1+50mA
charge-pump output voltage (pin 9)−0.3V
CC1
V
output tuning voltage (pin 10)−0.3+35V
input switching voltage (pin 11)−0.3V
lock output voltage (pin 12)−0.3V
CC1
CC1
V
V
serial clock input voltage (pin 13)−0.3+6.0V
serial data input/output voltage (pin 14)−0.3+6.0V
serial data output current−1+10mA
chip enable input voltage (pin 15)−0.3+6.0V
crystal oscillator input voltage (pin 16)−0.3V
CC1
V
IC storage temperature−40+150°C
maximum junction temperature−+150°C
short-circuit time; every pin except pin 4 to
note 1−10s
pin 3 and every pin to pin 2
Note
1. Short-circuit between V
rating at V
CC1
.
CC1
and V
is allowed provided the voltage applied to V
CC2
is less than the 6 V maximum
CC2
HANDLING
Inputs and outputs are protected against electrostatic discharge in normal handling. However, to be totally safe, it is
desirable to take normal precautions appropriate to handling bipolar devices. Every pin withstands the ESD test in
accordance with
“MIL-STD-883C category B”
(2000 V). Every pin withstands the ESD test in accordance with Philips
Semiconductors Machine Model 0 Ω, 200 pF (200 V).
THERMAL CHARACTERISTICS
SYMBOLPARAMETERVALUEUNIT
R
th j-a
thermal resistance from junction to ambient in free air
SO16110K/W
SSOP16142K/W
1996 Oct 1010
Page 11
Philips SemiconductorsProduct specification
1.3 GHz universal bus-controlled
TSA5520; TSA5521
TV synthesizer
CHARACTERISTICS
V
= 4.5 to 5.5 V; V
CC1
CC2=VCC1
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
Supplies
V
V
CC1
CC2
supply voltage4.5−5.5V
band switch buffers supply
voltage
I
CC1
I
CC2
V
POR
supply currentat power-on−2025mA
band switch buffers supply current at power-on−0.51mA
The tuning amplifier is capable of driving the varicap
voltage without an external transistor. The tuning voltage
output must be connected to an external load of 27 kΩ
which is connected to the tuning voltage supply rail.
Figures 11 and 12 show a possible loop filter.
The component values depend on the oscillator
characteristics and the selected reference frequency.
2
Examples of I
Tables 8 to 12 show the various sequences where f
C-bus sequences (SW = LOW)
osc
S = START, A = acknowledge and P = STOP. The sequence is as follows:
START + address byte + divider byte 1 + divider byte 2 + control byte + band switch byte + STOP.
For the complete sequence see Table 8 (sequence 1) or Table 9 (sequence 2).
Table 8 Complete sequence 1
Crystal oscillator
The crystal oscillator uses a 4 MHz crystal connected in
series with an 18 pF capacitor thereby operating in the
series resonance mode. Connecting the oscillator to the
supply voltage is preferred but it can, however, also be
connected to ground.
= 100 MHz, BS4 = ON, ICP= 280 µA, N = 512, f
= 4 MHz,
xtal
SC2A06A40ACEA08A P
Table 9 Complete sequence 2
SC2ACEA08A06A40A P
Table 10 Divider bytes only sequence
SC2A06A40A P
Table 11 Control and band switch bytes only sequence
SC2ACEA08AP
Table 12 Control byte only sequence
SC2ACEA P
2
Other I
C-bus sequences are not allowed. Other I2C-bus addresses may be selected by applying an appropriate voltage
to the CE input.
Examples of 3-wire bus sequences (TSA5520; SW = OPEN)
Table 13 18-bit sequence (f
= 800 MHz, BS4 = ON)
osc
100011001000000000
Table 14 19-bit sequence (f
= 650 MHz, BS3 = ON)
osc
0100101000101000000
The reference divider is automatically set to 512 unless RSB has been programmed to 0 during a 27-bit sequence.
1996 Oct 1016
Page 17
Philips SemiconductorsProduct specification
1.3 GHz universal bus-controlled
TSA5520; TSA5521
TV synthesizer
Table 15 27-bit sequence (f
000101110101001100010001000
The reference divider is automatically set to 1024 unless RSB has been programmed to 0 during a 27-bit sequence.
This sequence sets RSA = RSB = 0; CP = 0.
Table 16 19-bit sequence
0001010111011100000
This sequence will program f
Table 17 18-bit sequence
000110111011100000
This sequence will program f
Table 18 27-bit sequence (f
000110100010100000011001010
= 750 MHz, BS1 = ON, N = 640, Icp=60µA, no test function)
osc
to 600 MHz in 50 kHz steps. ICP remains at 60 µA.
osc
to 600 MHz in 50 kHz steps. ICP remains at 60 µA.
osc
= 650 MHz, BS1 = ON)
osc
This sequence sets RSA to 0, RSB to 1 and CP to 1. After this sequence I
and N = 512 (18-bit transmission), RSB = 1.
Example of 3-wire bus sequence (TSA5521; SW = OPEN)
Table 19 19-bit sequence (f
0100011011010110000
N = 640 unless RSB has been programmed to 0 during a 27-bit sequence.
= 700 MHz, BS3 = ON)
osc
= 280 µA, N = 1024 (19-bit transmission)
CP
1996 Oct 1017
Page 18
Philips SemiconductorsProduct specification
1.3 GHz universal bus-controlled
TV synthesizer
handbook, full pagewidth
2.2 nF
100 nF
22 kΩ
SCL
SDA
AS
CPSWITCH
V
SW
LOCK
SCL
SDA
CE
XTAL
tune
TSA552X
TSA5520; TSA5521
22 kΩ
27
kΩ
33 V
BS1
BS2
BS3
BS4LOCK
V
CC2
V
CC1
V
EE
RF
(1)
18 pF4 MHz
1 nF
MLC887
10 nF
HIGH
MID
LOW
12 V
(2)
RF
5 V
33
nF
V
tune
(1) Connection to ground is also allowed.
(2) Capacitor prevents parasitic oscillation on the V
handbook, full pagewidth
2.2 nF
22 kΩ
CLOCK
DATA
ENABLE
(1) Connection to ground is also allowed.
(2) Capacitor prevents parasitic oscillation on the V
line.
CC2
Fig.11 Typical I2C-bus application.
27
kΩ
100 nF
CPSWITCH
V
tune
SW
LOCK
TSA552X
SCL
SDA
CE
XTAL
line.
CC2
BS1
BS2
BS3
BS4LOCK
V
CC2
V
CC1
V
EE
RF
(1)
18 pF4 MHz
1 nF
MLC888
10 nF
22 kΩ
33 V
HIGH
MID
LOW
12 V
(2)
RF
5 V
33
nF
V
tune
Fig.12 Typical 3-wire bus application.
1996 Oct 1018
Page 19
Philips SemiconductorsProduct specification
1.3 GHz universal bus-controlled
TV synthesizer
PACKAGE OUTLINES
SO16: plastic small outline package; 16 leads; body width 3.9 mm
D
c
y
Z
16
9
TSA5520; TSA5521
E
H
E
A
X
v M
SOT109-1
A
pin 1 index
1
e
02.55 mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
UNIT
mm
inches
Note
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
A
max.
1.75
0.069
A1A2A
0.25
1.45
0.10
1.25
0.0098
0.057
0.0039
0.049
0.25
0.01
b
3
p
0.49
0.25
0.36
0.19
0.0098
0.019
0.0075
0.014
(1)E(1)(1)
cD
10.0
9.8
0.39
0.38
8
b
p
scale
eHELLpQZywv θ
4.0
1.27
3.8
0.16
0.050
0.15
w M
6.2
5.8
0.24
0.23
A
2
1.05
0.041
Q
A
1
detail X
1.0
0.7
0.4
0.6
0.028
0.039
0.020
0.016
(A )
L
p
L
0.250.1
0.25
0.01
0.010.004
A
3
θ
0.7
0.3
0.028
0.012
o
8
o
0
OUTLINE
VERSION
SOT109-1
IEC JEDEC EIAJ
076E07S MS-012AC
REFERENCES
1996 Oct 1019
EUROPEAN
PROJECTION
ISSUE DATE
91-08-13
95-01-23
Page 20
Philips SemiconductorsProduct specification
1.3 GHz universal bus-controlled
TV synthesizer
SSOP16: plastic shrink small outline package; 16 leads; body width 4.4 mm
16
D
c
y
Z
9
E
H
E
TSA5520; TSA5521
SOT369-1
A
X
v M
A
pin 1 index
18
w M
b
b
0.32
0.20
p
p
cD
0.25
5.30
0.13
5.10
02.55 mm
scale
(1)E(1)
eHELLpQZywv θ
4.5
0.65
4.3
e
DIMENSIONS (mm are the original dimensions)
mm
A
max.
1.5
0.15
0.00
1
A2A
1.4
1.2
3
0.25
UNITA
Note
1. Plastic or metal protrusions of 0.20 mm maximum per side are not included.
Q
A
2
6.6
6.2
L
0.65
0.45
(A )
L
p
A
1
detail X
0.75
1.0
0.45
3
A
θ
0.130.20.1
0.48
0.18
(1)
o
10
o
0
OUTLINE
VERSION
SOT369-1
IEC JEDEC EIAJ
REFERENCES
1996 Oct 1020
EUROPEAN
PROJECTION
ISSUE DATE
94-04-20
95-02-04
Page 21
Philips SemiconductorsProduct specification
1.3 GHz universal bus-controlled
TV synthesizer
SOLDERING SO or SSOP
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
cases 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 SO and
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
(order code 9398 652 90011).
TSA5520; TSA5521
SSOP
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.
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).
ETHOD (SO OR SSOP)
M
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.
SO
Wave soldering techniques can be used for all SO
packages if the following conditions are 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.
• The package footprint must incorporate solder thieves at
the downstream end.
1996 Oct 1021
Repairing soldered joints
Fix the component by first soldering two diagonally-
opposite 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 at 270 to 320 °C.
Page 22
Philips SemiconductorsProduct specification
1.3 GHz universal bus-controlled
TSA5520; TSA5521
TV synthesizer
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.
PURCHASE OF PHILIPS I
Purchase of Philips I
components in the I2C system provided the system conforms to the I2C specification defined by
Philips. This specification can be ordered using the code 9398 393 40011.
2
C COMPONENTS
2
C components conveys a license under the Philips’ I2C patent to use the
1996 Oct 1022
Page 23
Philips SemiconductorsProduct specification
1.3 GHz universal bus-controlled
TV synthesizer
TSA5520; TSA5521
NOTES
1996 Oct 1023
Page 24
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 Netherlands537021/50/02/pp24 Date of release: 1996 Oct 10Document order number: 9397 750 01353
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