ST TDA7850 User Manual

4 x 50 W MOSFET quad bridge power amplifier

Features

■ High output power capability:

–4 x 50 W/4 Ω max.
–4 x 30 W/4 Ω @ 14.4 V, 1 kHz, 10 %
–4 x 80 W/2 Ω max.
–4 x 55 W/2 Ω @ 14.4V, 1 kHz, 10 %

■ MOSFET output power stage

■ Excellent 2 Ω driving capability

■ Hi-Fi class distortion

■ Low output noise

■ ST-BY function

■ Mute function

■ Automute at min. supply voltage detection

■ Low external component count:

– Internally fixed gain (26 dB)
– No external compensation
– No bootstrap capacitors

■ On board 0.35 A high side driver

Protections:

■ Output short circuit to gnd, to V

load

■ Very inductive loads

■ Overrating chip temperature with soft thermal

limiter

■ Output DC offset detection

■ Load dump voltage

■ Fortuitous open gnd

■ Reversed battery

Table 1. Device summary

, across the

s

TDA7850

Flexiwatt25

(Vertical)

Flexiwatt25

(Horizontal)

■ ESD

Description

The TDA7850 is a breakthrough MOSFET
technology class AB audio power amplifier in
Flexiwatt 25 package designed for high power car
radio. The fully complementary P-Channel/N­Channel output structure allows a rail to rail
output voltage swing which, combined with high
output current and minimized saturation losses
sets new power references in the car-radio field,
with unparalleled distortion performances.

The TDA7850 integrates a DC offset detector.

Order code Package Packing

TDA7850 Flexiwatt25 (Vertical) Tube

TDA7850H Flexiwatt25 (Horizontal Tube

November 2008 Rev 5 1/18

www.st.com

1

Contents TDA7850

Contents

1 Block diagram and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2 Standard test and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.4 Electrical characteristic curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.1 SVR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.2 Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.3 Standby and muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.4 DC offset detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.5 Heatsink definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2/18

TDA7850 List of tables

List of tables

Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 4. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Table 5. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3/18

List of figures TDA7850

List of figures

Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 2. Standard test and application circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 3. Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 4. Components and top copper layer of the Figure 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 5. Bottom copper layer Figure 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 6. Quiescent current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 7. Output power vs. supply voltage (R
Figure 8. Output power vs. supply voltage (R
Figure 9. Distortion vs. output power (R
Figure 10. Distortion vs. output power (R
Figure 11. Distortion vs. frequency (R
Figure 12. Distortion vs. frequency (R

= 4Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

L

= 2Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

L

Figure 13. Crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 14. Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 15. Output attenuation vs. supply voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 16. Power dissipation and efficiency vs. output power (R
Figure 17. Power dissipation and efficiency vs. output power (R
Figure 18. Power dissipation vs. output power (R
Figure 19. Power dissipation vs. output power (R

Figure 20. ITU R-ARM frequency response, weighting filter for transient pop. . . . . . . . . . . . . . . . . . . 13

Figure 21. Flexiwatt25 (vertical) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . 15

Figure 22. Flexiwatt25 (horizontal) mechanical data and package dimensions. . . . . . . . . . . . . . . . . . 16

= 4Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

L

= 2Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

L

= 4Ω). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

L

= 2Ω). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

L

= 4Ω, SINE) . . . . . . . . . . . . . . . . . 12

L

= 2Ω, SINE) . . . . . . . . . . . . . . . . . 12

= 4Ω, audio program simulation) . . . . . . . . . . . . . 13

L

= 2Ω, audio program simulation) . . . . . . . . . . . . . 13

L

L

4/18

TDA7850 Block diagram and application circuit

C

1 Block diagram and application circuit

1.1 Block diagram

Figure 1. Block diagram

Vcc1 Vcc2

ST-BY

MUTE

IN1

0.1μF

IN2

0.1μF

IN3

0.1μF

IN4

0.1μF

AC-GND

0.47μF47μF

SVR TAB S-GND

1.2 Standard test and application circuit

Figure 2. Standard test and application circuit

ST-BY

MUTE

IN1

IN2

IN3

IN4

R1

10K

R2

47K

C1

0.1μF

C2 0.1μF

C3 0.1μF

C4 0.1μF

C8

0.1μF

4

C9

1μF

22
C10
1μF

11

12

15

S-GND

14

13

16 10 25 1

C5

0.47μF

*) R3 = 10kΩ to be placed when pin 25 is used as offset detector.

C7

2200μF

Vcc1-2

SVR TAB

C6

47μF

Vcc3-4

620

HSD/OD

R3

100nF470μF

HSD

*)

HSD/V

OFF_DET

OUT1+

OUT1-

PW-GND

OUT2+

OUT2-

PW-GND

OUT3+

OUT3-

PW-GND

OUT4+

OUT4-

PW-GND

D94AU158D

9

8

7

5

2

3

17

18

19

21

24

23

OUT1

OUT2

OUT3

OUT4

D95AU335

5/18

Pin description TDA7850

2 Pin description

Figure 3. Pin connection (top view)

TAB

P-GND2

OUT2-

ST-BY

OUT2+

V

OUT1-

P-GND1

OUT1+

SVR

IN1

IN2

S-GND

IN4

IN3

AC-GND

OUT3+

P-GND3

OUT3-

V

OUT4+

MUTE

OUT4-

P-GND4

HSD

TAB

P-GND2

OUT2-

ST-BY

OUT2+

V

OUT1-

P-GND1

OUT1+

SVR

IN1

IN2

S-GND

IN4

IN3

AC-GND

OUT3+

P-GND3

OUT3-

V

OUT4+

MUTE

OUT4-

P-GND4

HSD

1

CC

Vertical

CC

25

D94AU159A

1

CC

Horizontal

CC

25

D06AU1655

6/18

TDA7850 Electrical specifications

3 Electrical specifications

3.1 Absolute maximum ratings

Table 2. Absolute maximum ratings

Symbol Parameter Value Unit

V

S (DC)

V

S (pk)

V

Operating supply voltage 18 V

S

DC supply voltage 28 V

Peak supply voltage (for t = 50 ms) 50 V

Output peak current

I

repetitive (duty cycle 10 % at f = 10 Hz)

O

non repetitive (t = 100 μs)

P

T

T

Power dissipation T

tot

Junction temperature 150 °C

j

Storage temperature -55 to 150 °C

stg

3.2 Thermal data

Table 3. Thermal data

Symbol Parameter Value Unit

R

th j-case

Thermal resistance junction to case Max. 1 °C/W

9

10

= 70 °C 80 W

case

A
A

7/18

Electrical specifications TDA7850

3.3 Electrical characteristics

Table 4. Electrical characteristics

(Refer to the test and application diagram, V
T

= 25 °C; unless otherwise specified).

amb

= 14.4 V; RL = 4 Ω; Rg = 600 Ω; f = 1 kHz;

S

Symbol Parameter Test condition Min. Typ. Max. Unit

Quiescent current RL = ∞ 100 180 280 mA

I

q1

V

dV

dG

P

o max.

THD Distortion

e

SVR Supply voltage rejection f = 100 Hz; V

I

I

pin5

V

SB out

V

SB in

A

V

M out

V

Output offset voltage Play mode / Mute mode ±50 mV

OS

During mute ON/OFF output
offset voltage

OS

During Standby ON/OFF output

ITU R-ARM weighted
see Figure 20

offset voltage

Voltage gain 25 26 27 dB

G

v

Channel gain unbalance ±1 dB

v

= 13.2 V; THD = 10 %

V

S

= 13.2 V; THD = 1 %

V

S

= 14.4 V; THD = 10 %

Po Output power

V

S

VS = 14.4 V; THD = 1 %

= 14.4 V; THD = 10 %, 2 Ω 50 55 W

V

S

Max. output power

Output noise

No

High cut-off frequency PO = 0.5 W 100 300 KHz

f

ch

R

Input impedance 80 100 120 KΩ

i

Cross talk

C

T

Standby current consumption

SB

(1)

ST-BY pin current V

VS = 14.4 V; RL = 4 Ω

= 14.4 V; RL = 2 Ω

V

S

P

= 4W

o

= 15W; RL = 2Ω

P

o

"A" Weighted
Bw = 20 Hz to 20 kHz

= 1Vrms 50 75 dB

r

f = 1 kHz P
f = 10 kHz P

V

ST-BY

V

ST-BY

ST-BY

= 4 W

O

= 4 W

O

= 1.5 V 20

= 0 V 10

= 1.5 V to 3.5 V ±1 μA

-10 +10 mV

-10 +10 mV

23
16
28
20

25
19
30
23

50
85

0.006

0.015

35
50

60 70

60

Standby out threshold voltage (Amp: ON) 2.75 V

Standby in threshold voltage (Amp: OFF) 1.5 V

Mute attenuation P

M

= 4 W 80 90 dB

Oref

Mute out threshold voltage (Amp: Play) 3.5 V

Mute in threshold voltage (Amp: Mute) 1.5 V

M in

0.02

0.03

50
70

-

-

W

W

%

μV

dB

μA

8/18

TDA7850 Electrical specifications

Table 4. Electrical characteristics (continued)

(Refer to the test and application diagram, V
T

= 25 °C; unless otherwise specified).

amb

Symbol Parameter Test condition Min. Typ. Max. Unit

(Amp: Mute)
Att

V

AM inVS

I

pin23

Muting pin current

HSD section

automute threshold

≥ 80 dB; P

(Amp: Play)
Att < 0.1 dB; P

V

= 1.5 V

MUTE

(Sourced Current)

V

= 3.5 V -5 18 μA

MUTE

= 14.4 V; RL = 4 Ω; Rg = 600 Ω; f = 1 kHz;

S

= 4 W

Oref

= 0. 5W

O

6.5 7

7.5 8

71218μA

V

V

dropout

I

Dropout voltage IO = 0.35 A; VS = 9 to 16 V 0.25 0.6 V

Current limits 400 800 mA

prot

Offset detector (Pin 25)

V

M_ON

V

M_OFF

V

V

V

1. Saturated square wave output.

Mute voltage for DC offset
detection enabled

Detected differential output offset V

OFF

Pin 25 voltage for detection =

25_T

TRUE

Pin 25 Voltage for detection =

25_F

FALSE

V

V
V

V
V

ST-BY

ST-BY

ST-BY

OFF

ST-BY

OFF

= 5 V

= 5 V; V

= 5 V; V

> ±4 V

= 5 V; V

> ±2 V

8V

6V

= 8 V ±2 ±3 ±4 V

mute

= 8 V

mute

mute

= 8 V

01.5V

12 V

9/18

Electrical specifications TDA7850

Figure 4. Components and top copper layer of the Figure 2.

Figure 5. Bottom copper layer Figure 2.

10/18

TDA7850 Electrical specifications

Vs (V)

Po (W)

Vs (V)

RL= 4Ω
f = 1 KHz

Po-max

THD= 10%

THD= 1%

Vs (V)

Po (W)

Po-max

THD=10%
THD=1%

RL= 2Ω
f = 1 KHz

Po (W)

THD (%)

VS = 14.4 V
R

L

= 4Ω

f = 1 KHz

f = 10 KHz

Po (W)

THD (%)

VS = 14.4 V
RL = 2Ω

f = 10 KHz

f = 1 KHz

f (Hz)

THD (%)

VS = 14.4 V
R

L

= 4Ω

P

o

= 4 W

3.4 Electrical characteristic curves

Figure 6. Quiescent current vs. supply

voltage

Id (mA)

200

Vi = 0

190

RL =

180

170

160

150

140

130

120

110

100

∞

8 1012141618

AC00064

Figure 8. Output power vs. supply voltage

(R

= 2Ω)

130

120

110

100

90

80

70

60

50

40

30

20

10

0

8 9 10 11 12 13 14 15 16 17 18

L

AC00066

Figure 7. Output power vs. supply voltage

(R

= 4Ω)

80
75
70
65
60
55
50
45
40
35
30
25
20
15
10

5

8 9 10 11 12 13 14 15 16 17 18

L

AC00064

Figure 9. Distortion vs. output power

(R

= 4Ω)

10

1

0.1

0.01

0.001

0.1 1 10 100

L

AC00067

Figure 10. Distortion vs. output power

(R

= 2Ω)

10

1

0.1

0.01

0.001

0.1 1 10 100

L

Figure 11. Distortion vs. frequency

(R

= 4Ω)

10

1

0.1

0.01

0.001
10 100 1000 10000 100000

AC00068

11/18

L

AC00069

Electrical specifications TDA7850

f (Hz)

THD (%)

VS = 14.4 V
R

L

= 2Ω

P

o

= 8 W

R

L

= 4Ω

P

o

= 4 W

R

g

= 600Ω

f (Hz)

CROSSTALK (dB)

f (Hz)

SVR (dB)

Rg = 600Ω
Vripple = 1 Vrms

Vs (V)

OUTPUT ATTN (dB)

RL = 4Ω
P

o

= 4 W ref

P

tot

(W)

η

(%)

Po (W)

0

10

20

304050

60

708090

P

tot

η

VS = 14.4 V
R

L

= 4 x 4Ω

f = 1 KHz SINE

Ptot (W)

η

(%)

Po (W)

P

tot

η

VS = 14.4 V
R

L

= 4 x 2Ω

f = 1 KHz SINE

Figure 12. Distortion vs. frequency

(R

= 2Ω)

10

1

0.1

0.01

0.001
10 100 1000 10000 100000

L

Figure 14. Supply voltage rejection vs.

frequency

-20

-30

-40

-50

-60

-70

-80

-90

-100

10 100 1000 10000 100000

AC00070

AC00072

Figure 13. Crosstalk vs. frequency

-20

-30

-40

-50

-60

-70

-80

-90

-100
10 100 1000 10000 100000

AC00071

Figure 15. Output attenuation vs. supply

voltage

0

-20

-40

-60

-80

-100

5678910

AC00073

Figure 16. Power dissipation and efficiency

vs. output power (R

90

80

70

60

50

40

30

20

10

0

0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30

12/18

= 4Ω, SINE)

L

AC00074

Figure 17. Power dissipation and efficiency

vs. output power (R

180

160

140

120

100

80

60

40

20

0

0 5 10 15 20 25 30 35 40 45 50 55

= 2Ω, SINE)

L

AC00075

90

80

70

60

50

40

30

20

10

0

TDA7850 Electrical specifications

6

VS = 13.2 V
R

L

= 4 x 4Ω

GAUSSIAN NOISE

CLIP START

P

tot

(W)

Po (W)

VS = 13.2 V
R

L

= 4 x 2Ω

GAUSSIAN NOISE

CLIP START

P

tot

(W)

Po (W)

Figure 18. Power dissipation vs. output power

(R

= 4Ω, audio program simulation)

30

25

20

15

10

5

0123456

L

AC0007

Figure 20. ITU R-ARM frequency response,

weighting filter for transient pop

Output attenuation (dB)

10

0

-10

Figure 19. Power dissipation vs. output power

(R

= 2Ω, audio program simulation)

60

55

50

45

40

35

30

25

20

15

10

5

0246810

L

AC00077

-20

-30

-40

-50

10 100 1000 10000 100000

Hz

AC00343

13/18

Application hints TDA7850

4 Application hints

Referred to the circuit of Figure 2.

4.1 SVR

Besides its contribution to the ripple rejection, the SVR capacitor governs the turn ON/OFF
time sequence and, consequently, plays an essential role in the pop optimization during
ON/OFF transients. To conveniently serve both needs, Its minimum recommended value

is 10µF.

4.2 Input stage

The TDA7850's inputs are ground-compatible and can stand very high input signals (±
8Vpk) without any performance degradation.
If the standard value for the input capacitors (0.1µF) is adopted, the low frequency cut-off
will amount to 16 Hz.

4.3 Standby and muting

Standby and Muting facilities are both CMOS compatible. In absence of true CMOS ports or
microprocessors, a direct connection to Vs of these two pins is admissible but a 470kΩ
equivalent resistance should be present between the power supply and the muting and
ST-BY pins.
R-C cells have always to be used in order to smooth down the transitions for preventing any
audible transient noises.
About the standby, the time constant to be assigned in order to obtain a virtually pop-free
transition has to be slower than 2.5 V/ms.

4.4 DC offset detector

The TDA7850 integrates a DC offset detector to avoid that an anomalous DC offset on the
inputs of the amplifier may be multiplied by the gain and result in a dangerous large offset on
the outputs which may lead to speakers damage for overheating. The feature is enabled by
the MUTE pin (according to table 3) and works with the amplifier unmuted and with no signal
on the inputs.
The DC offset detection is signaled out on the HSD pin. To ensure the correct functionality of
the Offset Detector it is necessary to connect a pulldown 10 kW resistor between HSD and
ground.

4.5 Heatsink definition

Under normal usage (4 Ohm speakers) the heatsink's thermal requirements have to be
deduced from Figure 18, which reports the simulated power dissipation when real
music/speech programmes are played out. Noise with gaussian-distributed amplitude was
employed for this simulation. Based on that, frequent clipping occurrence (worst-case) will
cause P
heatsink's thermal resistance should be approximately 2°C/W. This would avoid any thermal
shutdown occurrence even after long-term and full-volume operation.

= 26 W. Assuming T

diss

= 70 °C and T

amb

= 150 °C as boundary conditions, the

CHIP

14/18

TDA7850 Package information

5 Package information

In order to meet environmental requirements, ST (also) offers these devices in ECOPACK®
packages. ECOPACK

®

packages are lead-free. The category of second Level Interconnect
is marked on the package and on the inner box label, in compliance with JEDEC Standard
JESD97. The maximum ratings related to soldering conditions are also marked on the inner
box label.

ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com.

Figure 21. Flexiwatt25 (vertical) mechanical data and package dimensions

DIM.

A 4.45 4.50 4.65 0.175 0.177 0.183
B 1.80 1.90 2.00 0.070 0.074 0.079
C 1.40 0.055
D 0.75 0.90 1.05 0.029 0.035 0.041
E 0.37 0.39 0.42 0.014 0.015 0.016

F (1) 0.57 0.022

G 0.80 1.00 1.20 0.031 0.040 0.0 47

G1 23.75 24.00 24.25 0.935 0.945 0.955

H (2) 28.90 29.23 29.3 0 1.139 1.150 1.153

H1 17.00 0.669
H2 12.80 0.503
H3 0.80 0.031

L (2) 22 .07 22.47 22.87 0.869 0.884 0.904

L1 18 .57 18.97 19.37 0.731 0 .747 0.762

L2 (2) 15.50 15.70 15.90 0.610 0.618 0.626

L3 7.70 7.85 7.95 0.303 0.309 0.313
L4 5 0.197
L5 3.5 0.138

M 3.70 4.00 4.30 0.145 0.157 0.169

M1 3.60 4.00 4.40 0.142 0.157 0.173

N 2.20 0.086
O 2 0.079

R 1.70 0.067
R1 0.5 0.02
R2 0.3 0.12
R3 1.25 0.049
R4 0.50 0.019

V5˚ (Tp.)
V1 3˚ (Typ.)
V2 20˚ (Typ.)
V3 45˚ (Typ.)

(1): dam-bar protusion not included
(2): molding pr otusion includ ed

mm inch

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

OUTLINE AND

MECHANICAL DATA

Flexiwatt25 (vertical)

V

C

B

H

V3

OL3 L4

L2

Pin 1

H3

G

H1

G1

H2

R3

N

F

V

A

R4

R2

R

L

L1

V2

R2

V1

R1

L5

FLEX25ME

R1 R1

M1

M

V1

D

E

7034862

15/18

Package information TDA7850

Figure 22. Flexiwatt25 (horizontal) mechanical data and package dimensions

DIM.

A 4.45 4.50 4.65 0.175 0.177 0.183
B 1.80 1.90 2.00 0.070 0.074 0.079
C 1.40 0.055
D 2.00 0.079
E 0.37 0.39 0.42 0.014 0.015 0.016

F (1) 0.57 0.022

G 0.75 1.00 1.25 0.029 0.040 0.0 49

G1 23.70 24.00 24.30 0.933 0.945 0.957

H (2) 28.90 29.23 29.3 0 1.139 1.150 1.153

H1 17.00 0.669
H2 12.80 0.503
H3 0.80 0.031

L (2) 21 .64 22.04 22.44 0.852 0.868 0.883

L1 10.15 10.5 10.85 0.40 0.413 0.427

L2 (2) 15.50 15.70 15.90 0.610 0.618 0.626

L3 7.70 7.85 7.95 0.303 0.309 0.313
L4 5 0.197
L5 5.15 5.45 5.85 0.203 0.214 0.23
L6 1.80 1.95 2.10 0.070 0.077 0.083

M 2.75 3.00 3.50 0.108 0.118 0.138
M1 4.73 0.186
M2 5.61 0.220

N 2.20 0.086

P 3.20 3.50 3.80 0.126 0.138 0. 15

R 1.70 0.067
R1 0.50 0.02
R2 0.30 0.12
R3 1.25 0.049
R4 0.50 0.02

V5˚ (Typ.)
V1 3˚ (Typ.)
V2 20˚ (Typ.)
V3 45˚ (Typ.)

(1): dam-bar protusion not included; (2): molding protus ion included

mm inch

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

OUTLINE AND

MECHANICAL DATA

Flexiwatt25
(Horizontal)

16/18

7399733 A

TDA7850 Revision history

6 Revision history

Table 5. Document revision history

Date Revision Changes

22-Nov-2006 1 Initial release.

27-Feb-2007 2 Added Chapter 3.4: Electrical characteristic curves.

09-Oct-2007 3

12-Sep-2008 4

07-Nov-2008 5

Updated the values for the dVOS and Iq1 parameters on the Ta bl e 4 .
Added Figure 20 on page 13.

Updated Figure 2: Standard test and application circuit.
Updated Section 4.4: DC offset detector and Section 4.3: Standby

and muting.

Updated the values of V

Modified max. values of the THD distortion in Table 4: Electrical

characteristics on page 8.

and THD parameters on the Ta bl e 4 .

OS

17/18

TDA7850

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