Datasheet TDA4470-MFLG3, TDA4470-MSD Datasheet (TEMIC)

TDA4470-M

Multistandard Video-IF and Quasi Parallel Sound Processing

Description

The TDA4470 is an integrated bipolar circuit for multi­standard video/sound IF (VIF/SIF) signal processing in
TV/VCR and multimedia applications. The circuit
processes all TV video IF signals with negative

Features

D

5 V supply voltage; low power consumption

D

Active carrier generation by FPLL principle
(frequency-phase-locked-loop) for true
synchronous demodulation

D

Very linear video demodulation, good pulse response
and excellent intermodulation figures

D

VCO circuit operates at picture carrier frequency, the
VCO frequency is switchable for L’-mode

D

Alignment-free AFC without external reference
circuit, polarity of the AFC curve is switchable

D

VIF-AGC for negative modulated signals (peak sync.
detection) and for positive modulation (peak white/
black level detector)

modulation (e.g., B/G standard), positive modulation
(e.g., L standard) and the AM, FM/NICAM sound IF
signals.

D

Intercarrier output signal is gain controlled (necessary
for digital sound processing)

D

Complete alignment-free AM demodulator with gain
controlled AF output

D

Separate SIF-AGC with average detection

D

Two independent SIF inputs

D

Parallel operation of the AM demodulator and QPS
mixer (for NICAM-L stereo sound)

D

Package and relevant pinning is compatible with the
single standard version TDA4472, which simplifies
the design of an universal IF module

D

Tuner AGC with adjustable take over point

D

Alignment-free quasi parallel sound (QPS) mixer for
FM/NICAM sound IF signals

Package: SDIP28, SO28

Ordering Information

Extended Type Number Package Remarks

TDA4470-MSD SDIP28

TDA4470-MFLG3 SO28 Delivery in taped form

TELEFUNKEN Semiconductors

Rev . A2, 15-Oct-96

1 (16)

Preliminary Information

TDA4470-M

Ï

Block Diagram

VIF

C

AGC

(optional)

15

C

BL

Offset
comp.

6

7

8

26

FPLL

AGC

(VIF)

Loop

filter

VIF amp

18

0°

90°

VCO

20

phase shift

Video det.

VCO

+

21

L’ switch

14

Control

AFC

Standard

12

13

19

22

AFC

switch

AFC

Video

Standard

switch

Tuner

Take over

point

SIF 2

SIF input

switch

SIF 1

C

AGC

11

10

27

28

23

Tuner

AGC

FM det.

SIF amp

3

1

2

5

AGC
(SIF)

AM det.

Figure 1. Block diagram

Supply

17

C

24

Intercarrier

(FM / NICAM)

25

4,9,16

95 10851

Ref

V

S

AF

(AM)

2 (16)

TELEFUNKEN Semiconductors

Rev . A2, 15-Oct-96

Preliminary Information

Circuit Description

Vision IF Amplifier

The video IF signal (VIF) is fed through a SAW filter to
the differential input (Pin 6-7) of the VIF amplifier. This
amplifier consists of three AC-coupled amplifier stages.
Each differential amplifier is gain controlled by the auto­matic gain control (VIF-AGC). The output signal of the
VIF amplifier is applied to the FPLL carrier generation
and the video demodulator.

Tuner-and VIF-AGC

At Pin 8, the VIF-AGC charges/discharges the AGC
capacitor to generate a control voltage for setting the gain
of the VIF amplifier and tuner in order to keep the video
output signal at a constant level. Therefore, in the case of
all negative modulated signals (e.g., B/G standard) the
sync. level of the demodulated video signal is the
criterion for a fast charge/discharge of the AGC capacitor .
For positive modulation (e.g., L standard) the peak white
level of video signal controls the charge current. In order
to reduce reaction time for positive modulation, where a
large time constant is needed, an additional black level
detector controls the discharge current in the event of
decreasing VIF input signal. The control voltage (AGC
voltage at Pin 8) is transferred to an internal control
signal, and is fed to the tuner AGC to generate the tuner
AGC current at Pin 11 (open collector output). The take
over point of the tuner AGC can be adjusted at Pin 10 by
a potentiometer or an external dc voltage (from interface
circuit or microprocessor).

FPLL, VCO and AFC

The FPLL circuit (frequency phase locked loop) consists
of a frequency and phase detector to generate the control
voltage for the VCO tuning. In the locked mode, the VCO
is controlled by the phase detector and in unlocked mode,
the frequency detector is superimposed. The VCO
operates with an external resonance circuit (L and C par­allel) and is controlled by internal varicaps. The VCO
control voltage is also converted to a current and repre­sents the AFC output signal at Pin 22. At the AFC switch
(Pin 19) three operating conditions of the AFC are pos­sible: AFC curve “rising” or “falling” and AFC “off”.

A practicable VCO alignment of the external coil is the
adjustment to zero AFC output current at Pin 22. At center
frequency the AFC output current is equal to zero.
Furthermore, at Pin 14, the VCO center frequency can be
switched for setting to the required L’ value (L ’ standard).

The optional potentiometer at Pin 26 allows an offset
compensation of the VCO phase for improved sound
quality (fine adjustment). Without a potentiometer (open
circuit at Pin 26), this offset compensation is not active.

TDA4470-M

The oscillator signal passes a phase shifter and supplies
the in-phase signal (0°) and the quadrature signal (90°)of
the generated picture carrier.

Video Demodulation and Amplifier

The video IF signal, which is applied from the gain
controlled IF amplifier, is multiplied with the inphase
component of the VCO signal. The video demodulator is
designed for low distortion and large bandwidth. The
demodulator output signal passes an integrated low pass
filter for attenuation of the residual vision carrier and is
fed to the video amplifier. The video amplifier is realized
by an operational amplifier with internal feedback and
8 MHz bandwidth (–3 dB). A standard dependent dc level
shift in this stage delivers the same sync. level for positive
and negative modulation. An additional noise clipping is
provided. The video signal is fed to VIF-AGC and to the
video output buffer . This amplifier with a 6 dB gain offers
easy adaption of the sound trap. For nominal video IF
modulation the video output signal at Pin 12 is 2 V

Sound IF Amplifier and SIF-AGC

The SIF amplifier is nearly identical with the 3-stage VIF
amplifier. Only the first amplifier stage exists twice and
is switchable by a control voltage at Pin 3. Therefore with
a minimal external expense it is possible to switch
between two different SAW filters. Both SIF inputs
features excellent cross-talk attenuation and an input
impedance which is independent from the switching
condition.

The SIF-AGC is related to the average level of AM- or
FM-carrier and controls the SIF amplifier to provide a
constant SIF signal to the AM demodulator and QPS
mixer.

AM Demodulator

The alignment-free AM demodulator is realized by a
synchronous detector . The modulated SIF signal from the
SIF amplifier output is multiplied in phase with the
limited SIF signal (AM is removed). The AF signal of the
demodulator output is fed to the output amplifier and to
the SIF-AGC. For all TV standards with negative video
modulation (e.g., B/G standard), the AF output signal
(Pin 25) is switched off by the standard switch.

Quasi-Parallel-Sound (QPS) Mixer

The QPS mixer is realized by a multiplier. The SIF signal
(FM or NICAM carrier) is converted to the intercarrier
frequency by the regenerated picture carrier (quadrature
signal) which is provided from the VCO. The intercarrier
signal is fed via an output amplifier to Pin 24.

pp.

TELEFUNKEN Semiconductors

Rev . A2, 15-Oct-96

3 (16)

Preliminary Information

TDA4470-M

Standard Switch

To have equal polarity of the video output signal the
polarity can be switched in the demodulation stage in
accordance with the TV standard. Additional a standard
dependent dc level shift in the video amplifier delivers the
same sync. level. In parallel to this, the correct VIF-AGC
is selected for positive or negative modulated VIF signals.
In the case of negative modulation (e.g., B/G standard)
the AM output signal is switched off. For positive modu­lation (L standard) the AM demodulator and QPS mixer
is active. This condition allows a parallel operation of the
AM sound signal and the NICAM-L stereo sound.

L’ Switch

With a control voltage at Pin 14 the VCO frequency can
be switched for setting to the required L’ value (L’
standard). Also a fine adjustment of the L’-VCO center
frequency is possible via a potentiometer. The L’ switch
is only active for positive modulated video IF-signals
(standard switch in L mode).

AFC Switch

The AFC output signal at Pin 22 can be controlled by a
switching voltage at Pin 19. It is possible to select an AFC
output signal with a rising- or falling AFC curve and to
switch off the AFC.

VCR Mode

For the VCR mode in a TV set (external video source
selected), it is recommendable to switch off the IF circuit.
With an external switching voltage at Pin 6 or 7, the IF
amplifiers are switched off and all signal output levels at
Pins 12, 24, and 25 are according to the internal dc
voltage.

Internal Voltage Stabilizer

The internal bandgap reference ensures constant perfor­mance independent of supply voltage and temperature.

4 (16)

TELEFUNKEN Semiconductors

Rev . A2, 15-Oct-96

Preliminary Information

Pin Description

TDA4470-M

V

i,SIF1

V

i,SIF1

V

GND

C

AGC

V

i,VIF

V

i,VIF

C

AGC

GND

R

V

1

2

3

sw

4

5

6

7

8

9

10

top

I

tun

11

28

27

26

25

24

23

22

21

20

19

18

V

R

V

V

V

V

V

V

V

LF

i,SIF2

i,SIF2

comp

o,AM

o,FM

S

AFC

VCO

VCO

sw

Pin Symbol Function

1, 2 Vi,

3 V

SIF1 input (symmetrical)

SIF1

Input selector switch

sw

4, 9, 16 GND Ground

5 C

6, 7 V

8 C
10 R
11 I
12 V
13 V
14 V
15 C
17 C

AGC
i, VIF
AGC

top

tun

o,vid

SW
SW

SIF-AGC (time constant)
VIF input (symmetrical)
VIF-AGC (time constant)
Take over point, tuner AGC
Tuner AGC output current
Video output
Standard switch
L’ switch
Black level capacitor

bl

Internal reference voltage

ref

18 LF Loop filter
19 V

20, 21 V

22 V
23 V
24 VO,
25 V
26 R

27, 28 V

VCO
AFC

O, AM

comp

i, SIF2

AFC switch

sw

VCO circuit
AFC output
Supply voltage

S

Intercarrier output

FM

AF output – AM sound
Offset compensation
SIF 2 input (symmetrical)

V

o,vid

V

sw

V

sw

12

13

14

17

16

15

94 8680

Figure 2. Pinning

TELEFUNKEN Semiconductors

Rev . A2, 15-Oct-96

C

Ref

GND

C

BL

Preliminary Information

5 (16)

TDA4470-M

Absolute Maximum Ratings

Reference point Pin 4 (9, 16), unless otherwise specified

Parameters Symbol Value Unit

Supply voltage Pin 23

SDIP28 package

SO28 package
Supply current Pin 23 I
Power dissipation SDIP28 package

SO28 package
Output currents Pins 12, 24 and 25 I
External voltages

Pins 1, 2, 5 to 8, 10, 12, 14, 17, 18 and 24 to 28
Pins 15, 20 and 21
Pin 11

Pins 3, 13, 19 and 22
Junction temperature T
Storage temperature T
Electrostatic handling *) all pins V

*)

Equivalent to discharging a 200 pF capacitor trough a 0 W resistor.

V
V

V

S
S

s

P
P

out

ext

j

stg

ESD

9.0

6.0
93 mA

840
560

5 mA

+4.5
+3.5

+13.5

V

S

+125 °C

–25 to +125 °C

"

300

V
V

mW
mW

V
V
V
V

V

Operating Range

Parameters Symbol Value Unit

Supply voltage range Pin 23

SDIP28 package
SO28 package

Ambient temperature T

Thermal Resistance

Parameters Symbol Maximum Unit

Junction ambient, when soldered to PCB

SDIP28 package
SO28 package

R
R

V
V

amb

thJA
thJA

S
S

4.5 to 9.0

4.5 to 6.0

–10 to +85 °C

55
75

V
V

K/W
K/W

6 (16)

TELEFUNKEN Semiconductors

Rev . A2, 15-Oct-96

Preliminary Information

Electrical Characteristics

TDA4470-M

VS = +5 V, T

= +25°C; reference point Pin 4 (9, 16), unless otherwise specified

amb

Parameters Test Conditions / Pins Symbol Min. Typ. Max. Unit

DC-supply Pin 23
Supply voltage – SDIP28

– SO28

Supply current I

V

S

V

S

S

4.5

4.5

5.0

5.0

9.0

5.5

85 93 mA

VIF-input Pin 6-7
Input sensitivity , (RMS value) For FPLL locked v
Input impedance See note 1 R
Input capacitance See note 1 C

in

in
in

80 120

m

1.2 k
2 pF

V

VIF-AGC Pins 8 and 15
IF gain control range G
AGC capacitor Pin 8 C
Black level capacitor Pin 15 C
Switching voltage: VCR mode See note 2 V
Switching current: VCR mode See note 2 I

v

AGC

BL

sw

sw

60 65 dB

2.2

m

100 nF

4.0 V

50

m

Tuner-AGC Pins 10 and 11 see note 3
A vailable tuner-AGC current I
Allowable output voltage V
IF slip – tuner AGC Current I
IF input signal for minimum

R

top

: 10 to 90% ∆G

tun

= 10 kW (V

top

= 4.5 V) v

tun

11

IF

in

1 2 4 mA

0.3 13.5 V
8 10 dB

4 mV

take over point
IF input signal for maximum

R

= 0, (V

top

= 0.8 V) v

top

in

40 mV

take over point
Variation of the take over point

by temperature

∆T

= 55°C

amb

VIF-AGC: G

= 46 dB

v

∆v

in

2 3 dB

FPLL and VCO Pins 18, 20, 21 and 26 see note 4
Max. oscillator frequency For carrier generation f
Vision carrier capture range f

Oscillator drift (free running) as
function of temperature

= 38.9 MHz,

vco

C

= 8.2 pF

vco

See note 5,

∆Τ

= 55°C,

amb

C

= 8.2 pF,

vco

f

= 38.9 MHz

vco

∆f

∆f/

vco

cap

∆

T

70 MHz

±1.5 ±2 MHz

–0.3 %

Video output Pin 12
Output current – source

– sink
Output resistance See note 1 R
Video output signal Peak-to-peak value vo,
Difference of the video signals Between B/G and L ∆v
Sync. level V
Zero carrier level for neg.

modulation, ultra white level
Zero carrier level for pos.

modulation, ultra black level

V13 = V
V8 = 3 V

V13 = 0
V

= 3 V

8

S

Supply voltage influence on the

±I

sync

V

V

∆V/

12

out

vid

o,vid

DC

DC

V

5

2

3

mA
mA

100

1.8 2.0 2.2 Vpp
10 %

1.2 V

3.4 V

1.15 V

1 %/V

ultra white and ultra black level
Video bandwidth (–3 dB) RL ≥ 1 kW, CL ≤ 50 pF B 6 8 MHz

V
V

RMS

W

F

A

W

TELEFUNKEN Semiconductors

Rev . A2, 15-Oct-96

7 (16)

Preliminary Information

TDA4470-M

UnitMax.Typ.Min.SymbolTest Conditions / PinsParameters

Video frequency response over
the AGC range

Differential gain error DG 2 5 %
Differential phase error DP 2 5 deg
Intermodulation

See note 6

1.07 MHz
Video signal to noise ratio W eighted, CCIR-567 S/
Residual vision carrier

fundamental wave 38.9 MHz
and second harmonic 77.8 MHz

Lower limiting level Below sync level ∆V
Upper limiting level Above ultra white level ∆V
Ripple rejection See note 1, Pin 23/Pin 12 RR 35 dB
Standard switch Pin 13
Control voltage for mode 1:

See note 7 V
neg. modulated video-IF signals
and AM/NICAM sound

Control voltage for mode 2:
pos. modulated video-IF signals
and AM/L-NICAM sound

Switching current I
AFC output Pin 22
Control slope ∆I/
Frequency drift by temperature Related to the picture

carrier frequency
Output voltage

upper limit
lower limit

Output current I
AFC switch Pin 19
Control voltage: AFC “off”

AFC curve rising
AFC curve falling

See note 8
Switching current I
L’ switch Pin 14
Control voltage:

L’ frequency +
L’-VCO alignment

L standard

See note 9
Switching current VSW = 0 I
SIF inputs Pin 1-2, 27-28
Input sensitivity

(RMS value)

Output signal

at Pin 24/25: –3 dB
Input impedance See note 1 R
Input capacitance See note 1 C
SIF-AGC Pin 5
IF gain control range G
AGC capacitor C
Intercarrier output-FM Pin 24 see note 10
DC output voltage V

∆Β 2.0 dB

a

IM

N

v

res1

lim1
lim

SW

V

SW

SW

f

∆

52 60 dB

56 60 dB

2 10 mV

400 mV

2

600 mV

2.0 V

0 0.8 V

±100

0.7

S

m

0.25 0.6 %

V

AFC

VS–0.4

0.4

AFC

V

V

v

AGC

SW

SW

SW

SW

in

DC

0

1.5

3.5

0

3.4

in
in

v

60 65 dB

±0.2 mA

0.8

2.5
V

S

±100

3.0

V

S

700

80 120

m

1.2 k
2 pF

10

2 V

m

A/kHz

m

m

V

m

V

A

V
V

V
V
V

A

V

V

A

RMS

W

F

8 (16)

TELEFUNKEN Semiconductors

Rev . A2, 15-Oct-96

Preliminary Information

TDA4470-M

UnitMax.Typ.Min.SymbolTest Conditions / PinsParameters
Output resistance See note 1 R
Sound IF output voltage

vin = 10 mV v

out

out

180 250 350 mV

(5.5 MHz output voltage)
Weighted signal to noise ratio:

(CCIR 468)

Ref. signal:
v

= 10 mV;

in

FM dev. = ±27 kHz
f

= 1 kHz;

mod

tested with the double
FM demod. U2860B;
B/G modulated VIF signal
Black screen: Channel 1/2
Grid pattern: Channel 1/2
Grey screen 50%: Channel

S/N
S/N
S/N

1/2

Ripple rejection See note 1, Pin 23/Pin 24 RR 35 dB
AF output-AM Pin 25 see note 11
DC output voltage V
Output resistance See note 1 R
AF output voltage v
Total harmonic distortion m = 54%

f

= 1 kHz and 12.5 kHz

mod

Signal to noise ratio Reference: m = 54 %,

f

= 1 kHz,

mod

DC
out

oAF

400 500 630 mV

THD 1 2 %

S/N 65 dB

22 kHz low pass filter

Ripple rejection See note 1, Pin 23/Pin 25 RR 28 dB
SIF input selector switch Pin 3
Control voltage:

input 1 active
input 2 active

Switching current I

See note 12 V

SW

SW

2.0
0

150

60/58
54/52
60/57

2.2 V

150

V

S

0.8

±100

W

dB
dB
dB

W

V
V



RMS

RMS

A

Notes

1.)

This parameter is given as an application information and not tested during production.

2.)

In VCR mode the VIF- and SIF path is switched off.

3.)

Adjustment of turn over point (delayed tuner AGC) with external resistor R

4.)

Resonance circuit of VCO (fo = 38.9 MHz): C
Coil L

with unloaded Q-factor Qo w 60 for an oscillator voltage w 100 mV

VCO

= 8.2 – 10 pF,

VCO

or external voltage V

top

at Pin 20 – 21

RMS

(e.g. TOKO coil 7 KM, 292 XNS - 4051Z)

5.)

The oscillator drift is related to the picture carrier frequency, at external temperature-compensated LC circuit.

6.)

 

1.07) = 20 log (4.43 MHz component/1.07 MHz component);  (1.07) value related to black-white signal

input signal conditions: picture carrier = 0 dB, colour carrier = –6 dB, sound carrier = –24 dB

7.)

Without external control at Pin 13 the IC automatically operates in mode 1:
⇒ negative modulated video-IF signals and FM/NICAM sound signals.

8.)

Without control voltage at Pin 19 falling AFC curve is automatically selected.

9.)

With open circuit at Pin 14 the L’ switch is not active.

10.)

Picture carrier PC = 38.9 MHz; sound carrier SC1 = 33.4 MHz, SC
PC/SC

11.)

Sound carrier SC = 32.4 MHz, modulated with f

12.)

Without control voltage at Pin 3 the SIF input 1 is automatically selected.

=13 dB; PC/SC

1

= 20 dB; PC unmodulated (equivalent to sync. peak level).

2

= 1 kHz, m = 54%; vin =10 mV

mod

= 33.16 MHz;

2

TELEFUNKEN Semiconductors

Rev . A2, 15-Oct-96

Preliminary Information

possible.

top

9 (16)

TDA4470-M

AF

SIF 2

28 27 26 25 24 23 22 21 20 19

12

SIF 1

*

) external L/C circuit (VCO 38.9 MHz)

with TOKO coil 7KM, 292 XNS – 4051Z

Input switch

(AM)

Loop

comp.

10 k

W

354

SIF

Intercarrier

(FM/NICAM)

+V

10 mF

AGC (SIF)

AFC

S

8.2 pF

6789

2.2 mF

AGC (VIF)

VIF

AFC

switch

*)
L

VCO

C

VCO

10 11 12 13 14

Tuner

delay

Loop
filter

22 mF

150

W

C

470 nF

18 17 16 15

10 k

W

Tuner

AGC

Video

Ref

470 nF

Video

neg/pos

Black

level

94 9291

22 K

L’

Figure 3. Test circuit

10 (16)

TELEFUNKEN Semiconductors

Rev . A2, 15-Oct-96

Preliminary Information

TDA4470-M

94 8497

2 V

AFC switch

AFC

+5 V

Intercarrier

(FM/NICAM)

AF(AM)

W

51 k

W

51 k

3.3 nF

S2

filter

Loop

10 nF
F

m

22

Offset

comp.

F

m

2.2

*)

W

150

VCO

L

BL

C

Ref

C

8.2 pF

10 nF

VCO

C

W

2.2 k

W

10 k

100 nF

18 17 16 15

470 nF

19

21 20

22

23

24

25

14

L’adjust

13

W

10 k

F

m

VIF

6 7 8 9 10 11 12

F

m

10 2.2

5

34

S3

2

S4

S1

AGC

Tuner

AGC (VIF)

AGC (SIF)

Input switch

L/L’

switch

switch

Standard

Video

Tuner

+12 V

*) External L/C circuit (VCO: 38.9 MHz)

with TOKO coil 7KM, 292 XNS – 4051Z

SAW : AM

10 nF

SIF 2

28 27 26

BP: 32.4 MHz

8

7

1

6

U4744B

2

1

10 nF

Figure 4. Basic application circuit

W

50

10 nF

3

in

IF

5

4

SIF 1

SAW: FM

SAW driver

SAW: VIF

BP: 33.4 MHz

TELEFUNKEN Semiconductors

Rev . A2, 15-Oct-96

11 (16)

Preliminary Information

TDA4470-M

Internal Pin Configuration

1, 27

2, 28

2 k

W

2 k

W

2 k

2 k

W

W

3 V

20 k

W

94 8521

Figure 5. Sound IF inputs (Pin 1-2, 27-28)

3.5 V

60 k

W

10 k

3

94 8522

Figure 6. Input selector switch (Pin 3)

W

2.3 V

4.2 V

94 8524

Figure 8. Video IF input (Pin 6-7)

94 8525

8

Figure 9. VIF-AGC time constant (Pin 8)

12 (16)

5

94 8523

Figure 7. SIF-AGC time constant (Pin 5)

Preliminary Information

3.5 V

6.5 k

W

6 k

W

94 8526

Figure 10. Tuner AGC – take over point (Pin 10)

TELEFUNKEN Semiconductors

Rev . A2, 15-Oct-96

94 8527

Figure 11. Tuner AGC – output (Pin 11)

TDA4470-M

2.7 V

5 k

W

15

94 8530

Figure 14. Black level capacitor (Pin 15)

2.6 mA

Figure 12. Video output (Pin 12)

3.5 V

17 k

15.5 k

W

13

23 k

W

94 8529

Figure 13. Standard switch (Pin 13)

94 8528

W

3.5 V

94 8531

Figure 15. Internal reference voltage (Pin 17)

2.75 V

Figure 16. Loop filter (Pin 18)

94 8532

TELEFUNKEN Semiconductors

Rev . A2, 15-Oct-96

13 (16)

Preliminary Information

TDA4470-M

3.5 V

19

10.5 k

W

94 8533

30 k

W

W

100

24

1 mA

94 8534

Figure 17. AFC switch (Pin 19)

7 k

W

Figure 18. VCO (Pin 20-21)

7 k

94 8536

Figure 20. Intercarrier output (Pin 24)

W

25

100

W

1.4 mA

94 8537

Figure 21. AF output AM sound (Pin 25)

94 8538

3.5 V

14 (16)

94 8535

Figure 19. AFC output (Pin 22)

Preliminary Information

10 k

W

10 k

W

Figure 22. VCO offset compensation (Pin 26)

TELEFUNKEN Semiconductors

Rev . A2, 15-Oct-96

Dimensions in mm

Package: SDIP28

TDA4470-M

95 10610

Package: SO28

95 10610

95 9932

TELEFUNKEN Semiconductors

Rev . A2, 15-Oct-96

15 (16)

Preliminary Information

TDA4470-M

Ozone Depleting Substances Policy Statement

It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to

1. Meet all present and future national and international statutory requirements.

2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems
with respect to their impact on the health and safety of our employees and the public, as well as their impact on
the environment.

It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as
ozone depleting substances (ODSs).

The Montreal Protocol ( 1987) and its London Amendments (1990) intend to severely restrict the use of ODSs and
forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban
on these substances.

TEMIC TELEFUNKEN microelectronic GmbH semiconductor division has been able to use its policy of
continuous improvements to eliminate the use of ODSs listed in the following documents.

1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively

2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental
Protection Agency (EPA) in the USA

3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively.

TEMIC can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain
such substances.

We reserve the right to make changes to improve technical design and may do so without further notice.

Parameters can vary in different applications. All operating parameters must be validated for each customer

application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized

application, the buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of,

directly or indirectly, any claim of personal damage, injury or death associated with such unintended or

unauthorized use.

16 (16)

TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany

Telephone: [phone], Fax number: 49 (0)7131 67 2423

TELEFUNKEN Semiconductors

Rev . A2, 15-Oct-96

Preliminary Information