Page 1
DATA SH EET
Product specification
File under Integrated Circuits, IC02
November 1985
INTEGRATED CIRCUITS
TDA8440
Switch for CTV receivers
Page 2
November 1985 2
Philips Semiconductors Product specification
Switch for CTV receivers TDA8440
GENERAL DESCRIPTION
The TDA8440 is a versatile video/audio switch, intended to
be used in CTV receivers equipped with an AUXILIARY
VIDEO/AUDIO plug.
It provides two 3-state switches for audio channels and
one 3-state switch for the video channel and a video
amplifier with selectable gain (times 1 or times 2).
The integrated circuit can be used in conjunction with a
microcontroller from the MAB8400 family, and is controlled
via a bidirectional I2C bus. Sufficient sub-addressing is
provided for the I2C bus mode. It can also be controlled
directly by d.c. switching signals.
Features
• Combined analogue and digital circuitry gives maximum
flexibility in channel switching
• 3-state switches for all channels
• Selectable gain for the video channels
• Sub-addressing facility
• I2C bus or non-I2C bus mode (controlled by d.c.
voltages)
• Slave receiver in the I2C bus mode
• External OFF command
• System expansion possible up to 7 devices (14 sources)
• Static short-circuit proof outputs
QUICK REFERENCE DATA
PACKAGE OUTLINE
18-lead DIL; plastic (SOT102); SOT102-1; 1996 November 19.
Supply voltage range V
15-4
10 to 13,2 V
Supply current (without load) I
15
typ. 33 mA
max. 50 mA
Storage temperature T
stg
max. + 125 °C
Operating ambient temperature range T
amb
0 to + 70 °C
Page 3
November 1985 3
Philips Semiconductors Product specification
Switch for CTV receivers TDA8440
Fig.1 Block diagram and test circuit.
S0, S1, S2 and OFF (pins 11, 13, 6 and 2) connected to VP or GND.
If more than 1 device is used, then the outputs and the pins 8 (bias decoupling of the audio inputs) may be connected in parallel.
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November 1985 4
Philips Semiconductors Product specification
Switch for CTV receivers TDA8440
FUNCTIONAL DESCRIPTION
The TDA8440 is a monolithic system of switches and can be used in CTV receivers equipped with an AUXILIARY
VIDEO/AUDIO plug.
The IC incorporates 3-state switches; they comprise:
a) An electronic video switch with selectable gain (times 1 or times 2) for switching between an internal video signal
(from the IF amplifier) and an AUXILIARY input signal.
b) Two electronic audio switches, for two sound channels (stereo or dual language), for switching between internal
audio sources and signals from the AUXILIARY VIDEO/AUDIO plug.
A selection can be made between two input signals and an OFF-state. The OFF-state is necessary if more than one
TDA8440 device is used.
The SDA and SCL pins can be connected to the I2C bus or to d.c. switching voltages. Inputs S0(pin 11), S1(pin 13), and
S2(pin 6) are used for selection of sub-addresses or switching to the non-I2C mode. Inputs S0, S1and S2can be
connected to the supply voltage (H) or to ground (L). In this way no peripheral components are required for selection.
Table 1 Sub-addressing
NON-I
2
C BUS CONTROL
If the TDA8440 switching device has to be operated via the AUXILIARY VIDEO/AUDIO plug, inputs S2, S1and S0must
be connected to the supply line (12 V).
The sources (internal and external) and the gain of the video amplifier can be selected via the SDA and SCL pins with
the switching voltage from the AUXILIARY VIDEO/AUDIO plug:
• Sources I are selected if SDA = 12 V (external source)
• Sources II are selected if SDA = 0 V (TV mode)
• Video amplifier gain is 2 × if SCL = 12 V (external source)
• Video amplifier gain is 1 × if SCL = 0 V (TV mode)
If more than one TDA8440 device is used in the non-I2C bus system, the OFF pin can be used to switch off the desired
devices. This can be done via the 12 V switching voltage on the AUXILIARY VIDEO/AUDIO plug.
• All switches are in the OFF position if OFF = H (12 V)
• All switches are in the selected position via SDA and SCL pins if OFF = L (0 V)
S
2
S
1
S
0
SUB-ADDRESS
A
2
A
1
A
0
LL L000
LL H001
LH L010
LH H011
HL L100
HL H101
HH L110
H H H non I
2
C addressable
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November 1985 5
Philips Semiconductors Product specification
Switch for CTV receivers TDA8440
I2C BUS CONTROL
Detailed information on the I2C bus is available on request.
Table 2 TDA8440 I
2
C bus protocol.
OFF FUNCTION
With the OFF input all outputs can be switched off (mode high ohmic), depending on the value of D0.
STA A
6A5A4A3A2A1A0
R/W AC D7D6D5D4D3D2D1D
0
AC STO
STA = start condition
A
6
= 1 Fixed address bits
A
5
= 0 Fixed address bits
A
4
= 0 Fixed address bits
A
3
= 1 Fixed address bits
A
2
= sub-address bit, fixed via S2input
A
1
= sub-address bit, fixed via S1input
A
0
= sub-address bit, fixed via S0input
R/W = read/write bit (has to be 0, only write mode allowed)
AC = acknowledge bit (= 0) generated by the TDA8440
D
7
= 1 audio la is selected to audio output a
D
7
= 0 audio la is not selected
D
6
= 1 audio lla is selected to audio output a
D
6
= 0 audio lla is not selected
D
5
= 1 audio lb is selected to audio output b
D
5
= 0 audio lb output is not selected
D
4
= 1 audio llb is selected to audio output b
D
4
= 0 audio llb is not selected
D
3
= 1 video l is selected to video output
D
3
= 0 video l is not selected
D
2
= 1 video ll is selected to video output
D
2
= 0 video ll is not selected
D
1
= 1 video amplifier gain is times 2
D
1
= 0 video amplifier gain is times 1
D
0
= 1 OFF-input inactive
D
0
= 0 OFF-input active
STO = stop condition
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November 1985 6
Philips Semiconductors Product specification
Switch for CTV receivers TDA8440
D0/OFF gating
Power-on reset
The circuit is provided with a power-on reset function.
When the power supply is switched on an internal pulse will be generated that will reset the internal memory S
0
, in the
initial state all the switches will be in the off position and the OFF input is active (D7 - D0= 0) (I2C mode), position defined
via SDA and SCL inputs (non-I2C mode).
When the power supply decreases below 5 V a pulse will be generated and the internal memory will be reset. The
behaviour of the switches will be the same as described above.
RATINGS
Limiting values in accordance with the Absolute Maximum System (IEC 134)
THERMAL RESISTANCE
D
0
OFF INPUT OUTPUTS
0 (off input active) H OFF
0 L in accordance with last defined
D
7
- D1(may be entered while OFF = HIGH)
1 (off input inactive) H in accordance with D
7
- D
1
1 L in accordance with D7 - D
1
MIN. TYP. MAX. UNIT
Supply voltage pin 15 V
P
−−14 V
Input voltage range pin 17 V
SDA
−0,3 − VP+ 0,3 V
pin 18 V
SCL
−0,3 − VP+ 0,3 V
pin 2 V
OFF
−0,3 − VP+ 0,3 V
pin 11 V
S0
−0,3 − VP+ 0,3 V
pin 13 V
S1
−0,3 − VP+ 0,3 V
pin 6 V
S2
−0,3 − VP+ 0,3 V
Video output current pin 16 −I
16
−−50 mA
Storage temperature range T
stg
−−+125 °C
Operating ambient temperature range T
amb
0 −+70 °C
Junction temperature T
j
−−+150 °C
PARAMETER SYMBOL VALUE UNIT
From junction to ambient in free air R
th j−a
50 K/W
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November 1985 7
Philips Semiconductors Product specification
Switch for CTV receivers TDA8440
CHARACTERISTICS
T
amb
=25°C; VP= 12 V; unless otherwise specified
PARAMETER SYMBOL MIN. TYP. MAX. UNIT
Supply
Supply voltage V
15-4
10 − 13,2 V
Supply current (without load) I
15
− 37 50 mA
Video switch
Input coupling capacitor C1C
3
100 −−nF
Voltage gain (times 1; SCL = L) A
3-16
−10+1dB
(times 2; SCL = H) A
3-16
+ 5 + 6 + 7dB
Voltage gain (times 1; SCL = L) A
1-16
−10+1dB
(times 2; SCL = H) A
1-16
+ 5 + 6 + 7dB
Input video signal amplitude (gain times 1) V
3-4
−−4,5 V
Input video signal amplitude (gain times 1) V
1-4
−−4,5 V
Output impedance Z
16-4
− 7 −Ω
Output impedance in ‘OFF’ state Z
16-4
100 −−kΩ
Isolation (off state) (f
o
= 5 MHz) 60 −−dB
Signal-to-noise ratio (note 3) S/S + N60−−dB
Output top-sync level V
16-4
2,4 2,8 3,2 V
Differential gain G −−3%
Minimum crosstalk attenuation (note 2) V
16-4
60 −−dB
Supply voltage rejection (note 4) RR 36 −−dB
Bandwidth (1 dB) B 10 −−MHz
Crosstalk attenuation for interference
caused by bus signals (source
impedance 75 Ω) α 60 −−dB
Audio switch a and b
Input signal level V
9-4(rms)
−−2V
V
10-4(rms)
−−2V
V
5-4(rms)
−−2V
V
7-4(rms)
−−2V
Input impedance Z
9-4
50 100 − kΩ
Z
10-4
50 100 − kΩ
Z
5-4
50 100 − kΩ
Z
7-4
50 100 − kΩ
Output impedance Z
12-4
−−10 Ω
Z
14-4
−−10 Ω
Output impedance (off state) Z
14-4
100 −−kΩ
Page 8
November 1985 8
Philips Semiconductors Product specification
Switch for CTV receivers TDA8440
Voltage gain V
9-12
−10+1dB
V
10-12
−10+1dB
V
5-14
−10+1dB
V
7-14
−10+1dB
Isolation (off state) (f = 20 kHz) 90 −−dB
Signal-to-noise ratio (note 5) S/S + N90−−dB
Total harmonic distortion (note 7) THD −−0,1 %
Crosstalk attenuation for interferences
caused by video signals (note 6)
Weighted α 80 −−dB
Unweighted α 80 −−dB
Crosstalk attenuation for interferences
caused by sinusoidal sound signals
(note 6) α 80 −−dB
Crosstalk attenuation for interferences
caused by the bus signal (weighted)
(source impedance = 1 kΩ)80−−dB
Supply voltage rejection RR 50 −−dB
Bandwidth (−1 dB) B 50 −−kHz
I
2
C bus inputs/outputs SDA (pin 17) and SCL
(pin 18)
Input voltage HIGH V
IH
3 − V
P
V
Input voltage LOW V
IL
−0,3 −+1,5 V
Input current HIGH
(1)
I
IH
−−10 µA
Input current LOW
(1)
I
IL
−−10 µA
Output voltage LOW at I
OL
= 3 mA V
OL
−−0,4 V
Maximum output sink current I
OL
− 5 − mA
Capacitance of SDA and SDL inputs,
pins 17 and 18 C
I
−−10 pF
Sub-address inputs S
0
(pin 11), S1 (pin 13), S2 (pin 6)
Input voltage HIGH V
IH
3 − V
P
V
Input voltage LOW V
IL
−0,3 −+0,4 V
Input current HIGH I
IH
−−10 µA
Input current LOW I
IL
−50 − 0 µA
OFF input (pin 2)
Input voltage HIGH V
IH
+3 − V
P
V
Input voltage LOW V
IL
−0,3 −+0,4 V
Input current HIGH I
IH
−−20 µA
Input current LOW I
IL
−10 − 2 µA
PARAMETER SYMBOL MIN. TYP. MAX. UNIT
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November 1985 9
Philips Semiconductors Product specification
Switch for CTV receivers TDA8440
Notes to the characteristics
1. Also if the supply is switched off.
2. Caused by drive on any other input at maximum level, measured in B = 5 MHz, source impedance
for the used input 75 Ω,
3.
4. Supply voltage ripple rejection = 20
5.
6. Caused by drive of any other input at maximum level, measured in B = 20 kHz, source impedance
of the used input = 1 kΩ,
7. f = 20 Hz to 20 kHz.
8. All outputs are short-circuit proof (static).
9. The inputs and output (apart from SDA, SCL and OFF) withstand tests of MIL-STD-883 C. It is advisable to
connected series resistors to these pins.
10. Timings t
S, DAT
and t
H, DAT
deviate from the I2C bus specification. After reset has been activated, transmission may
only be started after a 50 µs delay.
11. I2C bus load conditions are as follows:
4kΩ pull-up resistor to + 5 V; 200 pF to GND.
All values are referred to VIH = 3 V and VIL = 1,5 V.
Bus free before start
(11)
t
BUF
4 −−µs
Start condition set-up time t
s(STA)
4 −−µs
Start condition hold time t
h(STA)
4 −−µs
SCL, SDA LOW period t
LOW
4 −−µs
SCL, HIGH period t
HIGH
4 −−µs
SCL, SDA rise time t
r
−−1µs
SCL, SDA fall time t
f
−−0,3 µs
Data set-up time (write) t
s(DAT)
1 −−µs
Data hold time (write) t
h(DAT)
1 −−µs
Acknowledge (from TDA8440) set-up time t
s(CAC)
−−2µs
Acknowledge (from TDA8440) hold time t
h(CAC)
0 −−µs
Stop condition set-up time t
s(STO)
4 −−µs
PARAMETER SYMBOL MIN. TYP. MAX. UNIT
crosstalk 20
V
out
VINmax
----------------------log=
S/N 20
V
O
video noise (p-p) (2 V)
V
O
noise rms B = 5 MHz
----------------------------------------------------------------------
˙
.log=
V
r
supply
V
r
on output
--------------------------------
at f = max. 100 kHz.log
S/N = 20
V
O
nominal (0,5 V)
V
O
noiseB=20kHz
-------------------------------------------------------
˙˙
.log
crosstalk = 20
V
out
Vinmax
---------------------
according to DIN 45405 (CCIR 468).log
Page 10
November 1985 10
Philips Semiconductors Product specification
Switch for CTV receivers TDA8440
Fig.2 Timing diagram I2C bus.
Page 11
November 1985 11
Philips Semiconductors Product specification
Switch for CTV receivers TDA8440
PACKAGE OUTLINE
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC JEDEC EIAJ
SOT102-1
93-10-14
95-01-23
UNIT
A
max.
12
b
1
(1) (1)
(1)
b
2
cD E e M
Z
H
L
mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
A
min.
A
max.
b
max.
w
M
E
e
1
1.40
1.14
0.53
0.38
0.32
0.23
21.8
21.4
6.48
6.20
3.9
3.4
0.2542.54 7.62
8.25
7.80
9.5
8.3
0.854.7 0.51 3.7
inches
0.055
0.044
0.021
0.015
0.013
0.009
1.40
1.14
0.055
0.044
0.86
0.84
0.26
0.24
0.15
0.13
0.010.10 0.30
0.32
0.31
0.37
0.33
0.0330.19 0.020 0.15
M
H
c
(e )
1
M
E
A
L
seating plane
A
1
w M
b
1
b
2
e
D
A
2
Z
18
1
10
9
b
E
pin 1 index
0 5 10 mm
scale
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
DIP18: plastic dual in-line package; 18 leads (300 mil)
SOT102-1
Page 12
November 1985 12
Philips Semiconductors Product specification
Switch for CTV receivers TDA8440
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”
(order code 9398 652 90011).
Soldering by dipping or by wave
The maximum permissible temperature of the solder is
260 °C; solder at this temperature must not be in contact
with the joint for more than 5 seconds. The total contact
time of successive solder waves must not exceed
5 seconds.
The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified maximum storage temperature (T
stg max
). If the
printed-circuit board has been pre-heated, forced cooling
may be necessary immediately after soldering to keep the
temperature within the permissible limit.
Repairing soldered joints
Apply a low voltage soldering iron (less than 24 V) to the
lead(s) of the package, below the seating plane or not
more than 2 mm above it. If the temperature of the
soldering iron bit is less than 300 °C it may remain in
contact for up to 10 seconds. If the bit temperature is
between 300 and 400 °C, contact may be up to 5 seconds.
DEFINITIONS
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
2
C COMPONENTS
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.
Purchase of Philips I
2
C components conveys a license under the Philips’ I2C patent to use the
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.
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