SGS Thomson Microelectronics TDA2005S, TDA2005M, TDA2005 Datasheet



TDA2005

20W BRIDGE AMPLIFIERFOR CAR RADIO

High output power :

d = 10% ; P

=20W@RL=4Ω,d=1%.

O

= 10 + 10 W@RL=2Ω,

P

O

Highreliabilityofthechip and packagewithaddi­tional complete safety during operation thanks to
protectionagainst:

.

OUTPUT DC AND AC SHORT CIRCUIT TO
GROUND

.

OVERRATINGCHIPTEMPERATURE

.

LOADDUMPVOLTAGESURGE

.

FORTUITOUS OPEN GROUND

.

VERYINDUCTIVE LOADS

Flexibilityin use :

bridgeor stereoboosterampli­fierswith orwithoutboostrapandwith programma­blegain and bandwidth.

Space and cost saving : very low number of
external components, very simple mounting sys­tem with no electrical isolation between the pack­age and the heatsink(one screwonly).

In addition, the circuitoffers

tion

during short circuitfor one wire to ground.

loudspeaker protec-

ORDERING NUMBERS : TDA2005M (Bridge Appl.)

DESCRIPTION

TheTDA2005isclassB dualaudio poweramplifier
in MULTIWATTpackagespecificallydesignedfor

car radio application :
are easilydesignedusing this devicethatprovides
a high currentcapability(up to 3.5 A) and that can
drive very low impedance loads (down to 1.6Ω in

MULTIWATT11

TDA2005S (Stereo Appl.)

power booster amplifiers

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

s

V

s

V

s

(*) Output Peak Current (non repetitive t = 0.1 ms) 4.5 A

I

o

I

(*)

o

P

tot

T

stg,Tj

(*) The max. output current is internally limited.

Operating Supply Voltage 18 V
DC Supply Voltage 28 V
Peak Supply Voltage (for 50 ms) 40 V

Output Peak Current (repetitive f≥10 Hz)
Power Dissipation at T
Storage and Junction Temperature – 40 to 150

case

=60°C

3.5 A
30 W

°C

PIN CONNECTION

October 1998

TAB CONNECTEDTO PIN 6

11
10

9
8
7
6
5
4
3
2
1

D95AU318

BOOTSTRAP(1)
OUTPUT(1)
+V

S

OUTPUT(2)
BOOTSTRAP(2)
GND
INPUT+(2)
INPUT-(2)
SVRR
INPUT-(1)
INPUT+(1)

1/20

TDA2005

SCHEMATIC DIAGRAM

THERMALDATA

Symbol Parameter Value Unit

Thermal ResistanceJunction-case Max. 3 °

2/20

R

thj-case

C/W

BRIDGE AMPLIFIERAPPLICATION(TDA2005M)

Figure1 : Test and ApplicationCircuit (Bridgeamplifier)

TDA2005

Figure2 :

P.C.Board and ComponentsLayoutof Figure1 (1:1scale)

3/20

TDA2005

ELECTRICALCHARACTERISTICS

R

th (heatsink

)=4oC/W, unlessotherwise specified)

(referto the

Bridge

applicationcircuit, T

=25oC, GV=50dB,

amb

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

V

P

Supply Voltage 8 18 V

s

Output Offset Voltage (1)

os

(between pin 8 and pin 10)
Total Quiescent Drain Current

I

d

Output Power d = 10% f = 1 Hz

o

Vs= 14.4V

= 13.2V

V

s

= 14.4V RL=4Ω

V

s

V

= 13.2V RL= 3.2Ω

s

V

= 14.4V RL=4

s

V

= 13.2V RL= 3.2 Ω

s

R

L

= 3.2

Ω

18

Ω

20
17

150
150mVmV

7570150

160mAmA

20
22
19

d Distortion f = 1kHz

= 14.4V RL=4Ω

V

V

Input Sensitivity f = 1kHz

i

Input Resistance f = 1kHz 70

R

i

Low Frequency Roll Off (– 3dB)

f

L

High Frequency Roll Off (– 3dB)

f

H

G
e

Closed Loop Voltage Gain f = 1kHz 50 dB

v

Total Input Noise Voltage

N

SVR SupplyVoltage Rejection

Efficiency V

η

Thermal Shut-down Junction

T

j

Temperature

V

Notes :

Output Voltage with oneSide of

OSH

the Speaker shorted to ground

1. For TDA2005M only

2. Bandwith Filter :22Hz to 22kHz.

s

= 50mW to 15W

P

o

V

= 13.2V RL= 3.2

s

= 50mW to 13W

P

o

P

=2W RL=4Ω

o

P

=2W RL= 3.2Ω

o

= 3.2Ω

R

L

= 3.2

R

R
R

f

P
P
V
P

V
f = 1kHz, P

V
V

Ω 20 kHz

L

= 10kΩ(2)

g

= 10kΩ,C4=10µF

g

= 100Hz, V

ripple

= 14.4V, f = 1 kHz

s

= 20W RL=4Ω

o

= 22W RL= 3.2Ω

o

= 13.2V, f = 1 kHz

s

= 19W RL= 3.2Ω

o

= 14.4V, RL=4

s

= 14.4V RL=4Ω

s

= 13.2V RL= 3.2Ω

s

tot

ripple

Ω

= 13W

Ω

45 55 dB

= 0.5V

60
60

58

145

1
1

9
8

40 Hz

310µ

2V

W

%
%

mV
mV

k

Ω

V

%
%

%

C

°

4/20

TDA2005

Figure3 : Output OffsetVoltage versus

SupplyVoltage

Figure5 :

Distortionversus Output Power
(bridgeamplifier)

Figure4 : Distortion versus Output Power

(bridgeamplifier)

BRIDGEAMPLIFIER DESIGN

The followingconsideraionscan be useful when designing a bridge amplifier.

Parameter Single Ended Bridge

1

V

omax

I

o max

P

omax

Where : V

Peak OutputVoltage (before clipping)

Peak OutputCurrent (before clippling)

RMS Output Power (before clipping)

= output transistors saturation voltage

CE sat

= allowablesupply voltage

V

S

= load impedance

R

L

(Vs–2V

2

V

1

S

2

(VS− 2V

1

4

− 2V
R

2R

CE sat

CE sat

L

CE sat
L

)

2

)

(V

V
V

S

–2V

s

− 2V

S

−2V

R

2R

CE sat

CE sat

L

CE sat
L

2

)

5/20

TDA2005

Voltageand current swings are twice for a bridge
amplifierincomparisonwith singleendedamplifier.
In order words, with the same R

the bridge con-

L

figuration can deliver an output power that is four
times theoutputpower of a singleended amplifier,
while,with the samemax output current thebridge
configuration can deliver an output power that is
twice the output powerof asingle ended amplifier.
Core must be taken when selecting V

and RLin

S

order to avoid an output peak current above the
absolute maximumrating.

From the expression for I
= 14.4V and V

= 2V, the minimum load that

CE sat

, assuming V

Omax

S

can be driven by TDA2005in bridgeconfiguration
is :

R

L min

− 2V

V

S

=

I

Omax

CEsat

=

14.4 −

3.5

4

=2.97Ω

Thevoltagegainof thebridgeconfigurationisgiven
by (see Figure 34) :

V

0

=

V

=1+

1

G

V





R

R

2

R

1

2⋅R4

+R

R

3

+

R



4



4



STEREOAMPLIFIERAPPLICATION (TDA2005S)

Forsufficientlyhighgains(40 to50dB)itis possible
toput R

andR3=2R1, simplifingtheformula

2=R4

in :

R

1

=4

G

V

R

2

Gv(dB)

40
50

(Ω)R2=R4(Ω)R3(Ω)

R

1

1000
1000

39
12

2000
2000

Figure 6 : BridgeConfiguration

Figure7 :

TypicalApplicationCircuit

6/20

TDA2005

ELECTRICALCHARACTERISTICS

R

th (heatsink)

=4oC/W, unlessotherwwise specified

(referto the

Stereo

)

applicationcircuit, T

=25oC, GV=50dB,

amb

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V
V

P

Supply Voltage 8 18 V

s

Quiescent Output Voltage Vs= 14.4V

o

Total Quiescent Drain Current Vs= 14.4V

I

d

Output Power (each channel) f = 1kHz, d = 10%

o

V

V

V

V
V

= 13.2V

s

= 13.2V

s

= 14.4V RL=4Ω

s

= 13.2V RL= 3.2Ω

s

= 16V RL=2Ω

s

R
R
R

R

L
L
L

L

= 3.2Ω
=2Ω
= 1.6Ω

= 1.6Ω

6.667.2

6
7
9

10

6
9

7.8

6.6

7.2VV

6562120

120mAmA

6.5
8

10
11

6.5

10
12

d Distortion (each channel) f = 1kHz

= 14.4V RL=4

CT Cross Talk (1) V

Input Saturation Voltage 300 mV

V

i

Input Sensitivity f = 1kHz, Po=1W

V

i

Input Resistance f = 1kHz 70 200

R

i

Low Frequency Roll Off (– 3dB)

f

L

High Frequency Roll Off (– 3dB)

f

H

G
G

∆ G

e

Voltage Gain (open loop) f = 1kHz 90 dB

v

Voltage Gain (closed loop) f = 1kHz 48 50 51 dB

v

Closed Loop Gain Matching 0.5 dB

v

Total Input Noise Voltage

N

SVR SupplyVoltage Rejection

Efficiency V

η

Notes : 1. For TDA2005Monly

2. Bandwith Filter :22Hz to 22kHz.

V

s

= 50mW to 4W

P

o

V

= 14.4V RL=2Ω

s

= 50mW to 6W

P

o

V

= 13.2V RL= 3.2Ω

s

= 50mW to 3W

P

o

= 13.2V RL= 1.6Ω

V

s

= 40mW to 6W

P

o

= 14.4V, Vo=4V

s

RL=4Ω,Rg=5k

=2Ω

R

L

=2

R

Ω

L

= 10kΩ (2)

R

g

= 10kΩ,C3=10µF

R

g

= 100Hz, V

f

ripple

= 14.4V, f= 1kHz

s

P

= 6.5W RL=4Ω

o

P

= 10W RL=2Ω

o

= 13.2V, f= 1kHz

V

s

P

= 6.5W RL= 3.2Ω

o

P

= 100W RL= 1.6Ω

o

RMS

Ω

f = 1kHz
f = 10kHz

R

=4Ω

L

R

= 3.2Ω

L

= 0.5V

ripple

Ω

0.2

0.3

0.2

0.3

1
1
1
1

60
45

6

5.5

50 Hz

15 kHz

1.5 5

35 45 dB

70
60

70
60

W

%
%
%
%

dB

mV

k

Ω

µV

%
%

%
%

7/20

TDA2005

Figure8 :

QuiescentOutput Voltage versus
SupplyVoltage (Stereoamplifier)

Figure10 : Distortion versusOutput Power

(Stereoamplifier)

Figure 9 :

Figure 11 :

QuiescentDrain Current versus
SupplyVoltage (Stereoamplifier)

OutputPower versus SupplyVoltage
(Stereoamplifier)

Figure12 :

8/20

Output Power versus SupplyVoltage
(Stereoamplifier)

Figure 13 :

Distortionversus Frequency
(Stereoamplifier)

TDA2005

Figure14 :

Figure16 :

Distortionversus Frequency
(Stereoamplifier)

SupplyVoltage Rejectionversus
Frequency(Stereo amplifier)

Figure 15 :

Figure 17 :

SupplyVoltage Rejectionversus C3
(Stereoamplifier)

SupplyVoltage Rejectionversus
C2 and C3 (Stereo amplifier)

Figure18 : Supply Voltage Rejection versus

C2 and C3 (Stereo amplifier)

Figure 19 :

Gain versus Input Sensitivity
(Stereoamplifier)

9/20

TDA2005

Figure20 :

Figure22 :

Gain versus Input Sensitivity
(Stereoamplifier)

Total Power Dissipationand Effi­ciency versusOutput Power
(Stereoamplifier)

Figure 21 : Total Power Dissipationand Effi-

ciencyversus Output Power
(Bridgeamplifier)

10/20

TDA2005

APPLICATIONSUGGESTION

The recommendedvalues of the componentsare those shown on Bridge applicatiioncircuit of Figure1.
Differentvaluescan be used ; the followingtable can help the designer.

Comp.

R

1

R

2

R

3

R

4,R5

R

6,R7

C

1

C

2

C

3

C

4

C

5,C7

Recom.

Value

120 kΩ

1k

Ω

Optimization of the Output
Symmetry

Purpose Larger Than Smaller Than

Smaller P

o max

2kΩ

12 Ω

Closed Loop Gain Setting (see
Bridge Amplifier Design) (*)

1Ω FrequencyStability Danger of Oscillation at High

Frequency with Inductive Loads

2.2µF

2.2 µF

Input DC Decoupling
Optimization of Turn on Pop and

High Turn on Delay Higher Turn on Pop, Higher

Turn on Delay

0.1µF
10 µF

Supply by Pass Danger of Oscillation
Ripple Rejection Increase of SVR, Increase of

the Switch-on Time

100µF

Bootstrapping Increase of Distortion

Smaller P

o max

Low FrequencyCut-off,
Increase of Noise

Degradation of SVR.

at low Frequency

C

6,C8 220 µF

C

9,C10

(*) The closed loop gain must be higher than 32dB.

0.1µF

Feedback InputDC Decoupling,
Low Frequency Cut-off

Frequency Stability Danger of Oscillation

Higher Low Frequency
Cut-off

11/20

TDA2005

APPLICATION INFORMATION
Figure23 :

BridgeAmplifier without Boostrap

Figure24 :

12/20

P.C.Board and ComponentsLayoutof Figure 23 (1:1 scale)

APPLICATION INFORMATION (continued)
Figure25 : LowCost BridgeAmplifier (GV= 42dB)

TDA2005

Figure26 :

P.C.Board and ComponentsLayoutof Figure 25 (1:1 scale)

13/20

TDA2005

APPLICATION INFORMATION (continued)
Figure27 :

10+ 10 W StereoAmplifier with ToneBalanceand LoudnessControl

Figure28 : Tone ControlResponse

(circuitof Figure 29)

14/20

APPLICATION INFORMATION (continued)

TDA2005

Figure29 :

Figure30 :

20WBus Amplifier

Simple20W Two WayAmplifier(F

=2kHz)

C

15/20

TDA2005

APPLICATION INFORMATION (continued)
Figure 31 :

BridgeAmplifierCircuit suited for Low-gain Applications(G

= 34dB)

V

Figure32 :

Exampleof MutingCircuit

16/20

TDA2005

BUILT-IN PROTECTIONSYSTEMS
LoadDump VoltageSurge

The TDA2005 has a circuit which enables it to
withstanda voltagepulsetrain, onPin9, ofthetype
shownin Figure 34.

If the supply voltagepeaks to more than 40V,then
an LC filter must be inserted between the supply
and pin 9, in order to assure that the pulses at pin
9 will be held withing the limits shown.

AsuggestedLCnetworkis showninFigure33.With
thisnetwork, a trainof pulses with amplitude up to
120V and width of 2ms can be appliedat point A.
This type of protection is ON when the supply
voltage(pulse or DC)exceeds18V.Forthis reason
the maximumoperating supply voltageis 18V.

Figure33

Figure34

OpenGround

When the ratio is in the ON condition and the
ground is accidentally opened, a standard audio
amplifierwillbedamaged.OntheTDA2005protec­tion diodes are included to avoidany damage.

InductiveLoad

A protection diode is provided to allow use of the
TDA2005with inductiveloads.

DCVoltage

The maximum operating DC voltage for the
TDA2005is 18V.

Howeverthedevice canwithstand a DC voltageup
to 28V with no damage.This could occur during
winterif twobatteriesare seriesconnectedtocrank
the engine.

Thermal Shut-down

The presenceof a thermallimitingcircuitoffersthe
following advantages:

1) an overload on the output (even if it is
permanent), o r an excessive ambient
temperaturecan be easily withstood.

2) the heatsink can havea smaller factorof safety
compared with that of a conventional circuit.
There is no device damage in the case of
excessive junction temperature : all that
happensis thatP

(andthereforeP

O

)andIdare

tot

reduced.

The maximum allowable power dissipation de­pendsuponthe sizeof theexternalheatsink(i.e.its
thermal resistance); Figure 35 shows the dissipa­blepower as a functionof ambienttemperaturefor
differentthermal resistance.

Short Circuit

(ACand DC conditions)

TheTDA2005canwithstandapermanentshort-cir­cuiton the outputfor a supply voltage up to 16V.

PolarityInversion

High current (up to 10A) can be handled by the
devicewithno damagefor a longerperiod thanthe
blow-out time of a quick 2A fuse (normally con­nected in series with the supply). This feature is
added to avoid destruction, if during fitting to the
car, a mistake on the connection of the supply is
made.

LoudspeakerProtection

The circuit offers loudspeaker protection during
short circuit for one wire to ground.

17/20

TDA2005

Figure35 :

MaximumAllowable PowerDissipa­tion versus Ambient Temperature

Figure37 : Output Power and DrainCurrent ver-

sus Case Temperature

Figure 36 :

OutputPower and Drain Currentver­sus Case Temperature

18/20

TDA2005

DIM.

Dia1 3.65 3.85 0.144 0.152

MIN. TYP. MAX. MIN. TYP. MAX.

A 5 0.197
B 2.65 0.104
C 1.6 0.063
D 1 0.039
E 0.49 0.55 0.019 0.022
F 0.88 0.95 0.035 0.037

G 1.45 1.7 1.95 0.057 0.067 0.077
G1 16.75 17 17.25 0.659 0.669 0.679
H1 19.6 0.772
H2 20.2 0.795

L 21.9 22.2 22.5 0.862 0.874 0.886
L1 21.7 22.1 22.5 0.854 0.87
L2 17.4 18.1 0.685
L3 17.25 17.5 17.75 0.679 0.689 0.699
L4 10.3 10.7 10.9 0.406 0.421 0.429
L7 2.65 2.9 0.104 0.114

M 4.25 4.55 4.85 0.167 0.179 0.191

M1 4.73 5.08 5.43 0.186 0.200 0.214

S 1.9 2.6 0.075 0.102

S1 1.9 2.6 0.075 0.102

mm inch

0.886

0.713

OUTLINE AND

MECHANICAL DATA

Multiwatt11 V

19/20

TDA2005

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