STMicroelectronics TDA7850A, TDA7850AH Schematic [ru]

4 x 50 W MOSFET quad bridge power amplifier plus HSD

Features

■ High output power capability:

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

■ MOSFET output power stage

■ Excellent 2Ω 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 (26dB)
– No external compensation
– No bootstrap capacitors

■ On board 0.35A 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

TDA7850A

Flexiwatt27

(vertical)

Flexiwatt27
(horizontal)

■ ESD

Description

The TDA7850A is a breakthrough MOSFET
technology class AB audio power amplifier in
Flexiwatt27 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 TDA7850A integrates a DC offset detector.

Order code Package Packing

TDA7850A Flexiwatt27 (vertical) Tube

TDA7850AH Flexiwatt27 (horizontal Tube

October 2007 Rev 1 1/16

www.st.com

1

Contents TDA7850A

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.4 Electrical characteristic curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.1 SVR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.2 Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.3 Stand-by and muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.4 DC offset detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.5 Heatsink definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2/16

TDA7850A 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 5. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3/16

List of figures TDA7850A

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. Quiescent current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 5. Output power vs. supply voltage (R
Figure 6. Output power vs. supply voltage (R
Figure 7. Distortion vs. output power (R
Figure 8. Distortion vs. output power (R
Figure 9. Distortion vs. frequency (R
Figure 10. Distortion vs. frequency (R

= 4Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

L

= 2Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

L

Figure 11. Crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 12. Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 13. Output attenuation vs. supply voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 14. Power dissipation & efficiency vs. output power (R
Figure 15. Power dissipation & efficiency vs. output power (R
Figure 16. Power dissipation vs. output power (R
Figure 17. Power dissipation vs. output power (R

Figure 18. ITU R-ARM frequency response, weighting filter for transient pop. . . . . . . . . . . . . . . . . . . 11

Figure 19. Flexiwatt27 (vertical) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . 13

Figure 20. Flexiwatt27 (horizontal) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . 14

= 4Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

L

= 2Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

L

= 4Ω). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

L

= 2Ω). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

L

= 4Ω, SINE) . . . . . . . . . . . . . . . . . . . 11

L

= 2Ω, SINE) . . . . . . . . . . . . . . . . . . . 11

= 4Ω, audio program simulation) . . . . . . . . . . . . . 11

L

= 2Ω, audio program simulation) . . . . . . . . . . . . . 11

L

L

4/16

TDA7850A Block diagram and application circuit

1 Block diagram and application circuit

1.1 Block diagram

Figure 1. Block diagram

IN1

IN2

IN3

IN4

ST-BY

MUTE

0.1μF

0.1μF

0.1μF

0.1μF

AC-GND

0.47μF47μF

Vcc1 Vcc2

OFF DET

HSD/OFF DETHSD

OUT1+

OUT1-

PW-GND

OUT2+

OUT2-

PW-GND

OUT3+

OUT3-

PW-GND

OUT4+

OUT4-

PW-GND

SVR TAB S-GND

D03AU1467

100nF470μF

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

C9

1μF

C10
1μF

S-GND

C8

0.1μF

5

23

12

13

16

15

14

17 11 26 1, 27

C5

0.47μF

C7

2200μF

Vcc1-2

SVR TAB

C6

47μF

Vcc3-4

721

HSD/OFF DET

10

18

19

20

22

25

24

9

8

6

3

4

2

OUT1

OUT2

OUT3

OUT4

OFF DET

D03AU1469

5/16

Pin description TDA7850A

2 Pin description

Figure 3. Pin connection (top view)

TAB

OFF DET

PW-GND

OUT2-

ST-BY

OUT2+

V

OUT1-

PW-GND

OUT1+

SVR

IN1

IN2

S-GND

IN4

IN3

AC-GND

OUT3+

PW-GND

OUT3-

V

OUT4+

MUTE

OUT4-

PW-GND

HSD

TAB

TAB

OFF DET

PW-GND

OUT2-

ST-BY

OUT2+

V

OUT1-

PW-GND

OUT1+

SVR

IN1

IN2

S-GND

IN4

IN3

AC-GND

OUT3+

PW-GND

OUT3-

V

OUT4+

MUTE

OUT4-

PW-GND

HSD

TAB

1

CC

Vertical

CC

27

D03AU1468

1

CC

Horizontal

CC

27

AC00107

6/16

TDA7850A 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 = 50ms) 50 V

Output peak current

I

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

O

non repetitive (t = 100μs)

P

T

T

Power dissipation T

tot

Junction temperature 150 °C

j

Storage temperature -55 to 150 °C

stg

= 70°C 80 W

case

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

3.3 Electrical characteristics

10

9

A
A

Table 4. Electrical characteristics

(Refer to the test and application diagram, V
T

= 25°C; unless otherwise specified).

amb

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

S

Symbol Parameter Test Condition Min. Typ. Max. Unit

I

Quiescent current RL = ∞ 100 180 280 mA

q1

V

dV

dG

Output offset voltage Play mode - Mute mode ±60 mV

OS

During mute ON/OFF output
offset voltage

OS

During St-By ON/OFF output

ITU R-ARM weighted
see Figure 18

offset voltage

Voltage gain 25 26 27 dB

G

v

Channel gain unbalance ±1 dB

v

-10 +10 mV

-10 +10 mV

7/16

Electrical specifications TDA7850A

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

V

= 13.2V; THD = 10%

S

VS = 13.2V; THD = 1%

= 14.4V; THD = 10%

Po Output power

P

o max.

Max. output power

THD Distortion

e

Output noise

No

(1)

V

S

= 14.4V; THD = 1%

V

S

= 14.4V; THD = 10%, 2Ω 50 55 W

V

S

VS = 14.4V; RL = 4Ω

= 14.4V; RL = 2Ω

V

S

P

= 4W

o

= 15W; RL = 2Ω

P

o

"A" Weighted
Bw = 20Hz to 20KHz

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

S

23
16
28
20

25
19
30
23

50
85

0.006

0.015

35
50

0.05

0.07

50
70

W

W

%

μV

SVR Supply voltage rejection f = 100Hz; V

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

f

ch

Input impedance 80 100 120 KΩ

R

i

f = 1KHz PO = 4W
f = 10KHz PO = 4W

V

= 1.5V 20

St-B

y

= 0V 10

V

St-B

y

= 1.5V to 3.5V ±1 μA

St-By

= 4W 80 90 dB

Oref

I

I

pin5

V

SB out

V

SB in

A

V

M out

V

C

Cross talk

T

St-By current consumption

SB

St-by pin current V

St-By out threshold voltage (Amp: ON) 2.75 V

St-By in threshold voltage (Amp: OFF) 1.5 V

Mute attenuation P

M

Mute out threshold voltage (Amp: Play) 3.5 V

Mute in threshold voltage (Amp: Mute) 1.5 V

M in

(Amp: Mute)
Att

V

AM inVS

automute threshold

≥ 80dB; P

(Amp: Play)
Att < 0.1dB; P

V

MUTE

I

pin23

Muting pin current

(Sourced Current)

V

MUTE

HSD section

= 1Vrms 50 75 dB

r

60 70

60

-

-

dB

μA

6.5 7

7.5 8

71218μA

V

= 1.5V

= 4W

Oref

= 0.5W

O

= 3.5V -5 18 μA

V

dropout

I

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

Current limits 400 800 mA

prot

8/16

TDA7850A 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

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

Offset detector (Pin 26)

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

S

V

M_ON

V

M_OFF

V

V

V

Mute voltage for DC offset
detection enabled

Detected differential output offset V

OFF

Pin 26 voltage for detection =

26_T

TRUE

Pin 26 Voltage for detection =

26_F

FALSE

V

V
V

V
V

stby

stby

stby

OFF

stby

OFF

= 5V

= 5V; V

= 5V; V

> ±4V

= 5V; V

> ±2V

= 8V ±2 ±3 ±4 V

mute

= 8V

mute

= 8V

mute

1. Saturated square wave output.

3.4 Electrical characteristic curves

Figure 4. Quiescent current vs. supply

voltage

Id (mA)

200

Vi = 0

190

RL =

180

170

160

150

140

130

120

110

100

∞

8 1012141618

Figure 5. Output power vs. supply voltage

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

5

AC00064

8 9 10 11 12 13 14 15 16 17 18

(R

= 4Ω)

L

8V

6V

01.5V

12 V

AC00064

Figure 6. 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

Figure 7. Distortion vs. output power

(R

= 4Ω)

10

1

0.1

0.01

0.001

AC00066

0.1 1 10 100

9/16

L

AC00067

Electrical specifications TDA7850A

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

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

Figure 8. Distortion vs. output power

(R

= 2Ω)

10

1

0.1

0.01

0.001

0.1 1 10 100

L

Figure 10. Distortion vs. frequency

(R

= 2Ω)

10

1

0.1

0.01

0.001
10 100 1000 10000 100000

L

AC00068

AC00070

Figure 9. Distortion vs. frequency

(R

= 4Ω)

10

1

0.1

0.01

0.001
10 100 1000 10000 100000

L

Figure 11. Crosstalk vs. frequency

-20

-30

-40

-50

-60

-70

-80

-90

-100

10 100 1000 10000 100000

AC00069

AC00071

Figure 12. Supply voltage rejection vs.

frequency

-20

-30

-40

-50

-60

-70

-80

-90

-100
10 100 1000 10000 100000

10/16

AC00072

Figure 13. Output attenuation vs. supply

voltage

0

-20

-40

-60

-80

-100
5678910

AC00073

TDA7850A Electrical specifications

P

tot

(W)

η

(%)

Po (W)

0

10

20

30

40

50

60

70

80

90

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

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 14. Power dissipation & 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

= 4Ω, SINE)

L

AC00074

Figure 16. Power dissipation vs. output power

(R

= 4Ω, audio program simulation)

30

25

20

15

10

5

0123456

L

AC0007

Figure 15. Power dissipation & 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

90

80

70

60

50

40

30

20

10

0

AC00075

Figure 17. 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

Figure 18. ITU R-ARM frequency response,

weighting filter for transient pop

Output attenuation (dB)

10

0

-10

-20

-30

-40

-50

10 100 1000 10000 100000

Hz

AC00343

11/16

Application hints TDA7850A

4 Application hints

Ref. 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,

4.2 Input stage

The TDA7850A'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 Stand-by and muting

Its minimum recommended value is 10µF

.

STAND-BY 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 stand-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 stand-by, the time constant to be assigned in order to obtain a virtually pop-free
transition has to be slower than 2.5V/ms.

4.4 DC offset detector

The TDA7850A 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 works with the amplifier unmuted and no signal at the inputs.
The DC offset detection can be available at 2 different pins:

– Pin 2 (always enabled)
– Pin 26. Only enabled if Vmute (pin23) is set higher than 8V. If not (Vmute < 6 V)

pin 26 will revert to the original HSD function.

4.5 Heatsink definition

Under normal usage (4 Ohm speakers) the heatsink's thermal requirements have to be
deduced from Figure 16, 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.

= 26W. Assuming T

diss

= 70°C and T

amb

= 150°C as boundary conditions, the

CHIP

12/16

TDA7850A Package information

5 Package information

In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a Lead-free second level interconnect. 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 19. Flexiwatt27 (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 25.75 26.00 26.25 1.014 1.023 1.033

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

(1): dam-bar pro tusion not inc luded
(2): molding pr otusion includ ed

mm inch

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

V

B

H

V3

OL3 L4

L2

H1

H3

OUTLINE AND

MECHANICAL DATA

Flexiwatt27 (vertical)

C

V

H2

R3

R4

N

R2

R

L

L1

V2

A

V1

V1

Pin 1

R2

G

G1

F

FLEX27ME

R1

R1 R1

L5

M

D

E

M1

7139011

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Package information TDA7850A

Figure 20. Flexiwatt27 (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 0.80 1.00 1.20 0.031 0.040 0.047
G1 25.75 26.00 26.25 1.014 1.023 1.033

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

Flexiwatt27
(Horizontal)

14/16

7399738 A

TDA7850A Revision history

6 Revision history

Table 5. Document revision history

Date Revision Changes

9-Oct-2007 1 Initial release.

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TDA7850A

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