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TDA7802
High efficiency digital input quad power amplifier with built-in
diagnostics features, ’start stop’ compatible
Data brief
Description
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PowerSO36
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Flexiwatt27
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Flexiwatt27 (SMD)
Features
 24-bit resolution
 110 dB dynamic range (A-weighted)
 SB-I (SB - improved) high efficiency operation
the highest ’non - class D’ efficiency
 1 Ohm driving capability (only in PowerSO36
package)
– High output power capability:
4 x 28 W 4Ω@ 14.4 V, 1 kHz, THD = 10 %
– Max output power: 4 x 72 W 2 Ω
 Flexible mode control:
– Full I2C bus driving 1.8 V/3.3 V) with four
addresses selectable (only for PowerSO36
package option)
– Independent front/rear play/ mute
– Four selectable gains for very-low noise
line-out function
– Digital diagnostic with DC and AC load
detections
 Optional H/W control (no I2C bus)
 Start-stop compatibility (operation down to 6 V)
 Sample rates: 44.1 kHz, 48 kHz, 96 kHz, 192 kHz
 Flexible serial data port (1.8 V / 3.3 V):
– I2S standard, TDM 4Ch, TDM 8Ch,
TDM 16Ch
 Offset detector (play or mute mode)
 Independent front/rear clipping detector
 Programmable diagnostic pin
 CMOS compatible enable pin
 Thermal protection
 Qualification in accordance to AEC Q100 rev. G
standard
October 2014
The TDA7802 is a single chip quad bridge
amplifier in advanced BCD technology
integrating: a full D/A converter, digital input for
direct connection to I2S (or TDM) and powerful
MOSFET output stages.
The integrated D/A converter allows the
performance to reach an outstanding 115 dB S/N
ratio with more than 110 dB of dynamic range.
Moreover the TDA7802 integrates an innovative
high efficiency concept, optimized also for
uncorrelated music signals, that makes it the most
suitable device to simplify the thermal
management in high power sets.
Thanks to this concept, the dissipated output
power under average listening conditions can be
reduced up to 50% when compared to the
conventional class AB solutions.
The TDA7802 integrates also a programmable
PLL that is able to lock at the input frequencies of
64*Fs and 50*Fs for all the input configurations.
The device is equipped with a full diagnostics
array that communicates the status of each
speaker through the I2C bus. The same I2C bus
allows to control several configurations of the
device.
The TDA7802 is able to play music down to 6 V
supply voltage - so it is compatible with the so
called 'start stop' battery profile recently adopted
by several car makers (thus reducing the fuel
consumption and and the impact over the
environment).
Table 1.
Order code
Package
Packing
TDA7802
Flexiwatt27 (Vertical)
Tube
TDA7802SM
TDA7802SMTR
TDA7802PD
TDA7802PDTR
DocID025017 Rev 4
For further information contact your local STMicroelectronics sales office.
Device summary
Flexiwatt27 (SMD)
PowerSO36
Tube
Tape & reel
Tube
Tape & reel
1/10
www.st.com
Contents
TDA7802
Contents
1
Block diagram and pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2
Pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
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TDA7802
Block diagram and pins description
1
Block diagram and pins description
1.1
Block diagram
Figure 1. Block diagram (Flexiwatt27)
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1.2
Pins description
Figure 2. Pins connection diagrams
Flexiwatt27
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DocID025017 Rev 4
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Block diagram and pins description
TDA7802
Table 2. Flexiwatt27 pins description
4/10
N°
Pin
Function
1
TAB
2
PLLen
3
PWGND2
4
OUT 2-
5
WS
6
OUT 2+
Channel 2 (Left Rear) positive output
7
VCC12
Channel 1 and 2 positive supply
8
OUT 1-
Channel 1 (Left Front) negative output
Power Output
9
PWGND1
Power ground channel 1
Power Ground
10
OUT 1+
Channel 1 (Left Front) positive output
Power Output
11
SCK
Serial clock (I2S bus)
Logic Input
12
SD24
Serial data channels 2 and 4 (I2S bus)
Logic Input
13
SD13
Serial data channels 1 and 3 (I2S bus)
Logic Input
14
DGND
Digital ground
Signal Ground
15
AGND
Analog ground
Signal Ground
16
D3V3
Digital 3.3 V supply filter
Digital Regulator
17
A3V3
Analog 3.3 V supply filter
Analog Regulator
18
OUT3+
19
PWGND3
20
TAB connection
Pll loop filter / ENABLE
Ground
Input
Power ground channel 2
Power Ground
Channel 2 (Left Rear) negative output
Power Output
Word select (I2S bus)
Logic Input
Power Output
Battery
Channel 3 (right front) positive output
Power Output
Power ground channel 3
Power Ground
OUT3-
Channel 3 (right front) negative output
Power Output
21
VCC34
Channels 3 and 4 positive supply
22
OUT4+
Channel 4 (right rear) positive output
Power Output
23
CDdiag
Clip detector and diagnostic output:
Overcurrent protection intervention
Thermal warning
POR
Output DC offset
Output short to VCC/GND
Open Drain Output
24
OUT4-
Channel 4 (right rear) negative output
Power Output
25
PWGND4
Power ground channel 4
Power Ground
2C
data/legacy mode mute
26
SDAlm
I
27
SCLlen
I2C clock/enable legacy mode
DocID025017 Rev 4
Battery
Signal Input/Output
Signal Input
TDA7802
Block diagram and pins description
Table 3. PowerSO36 pins description
N°
Pin
1
TAB
Function
TAB connection
2
CDdiag
Clip detector and diagnostic output:
Overcurrent protection intervention
Thermal warning
POR
3
OUT4-
Channel 4 (right rear) negative output
4
VCC34
Channels 3 and 4 positive supply
5
PWGND4
6
VCC34
Channels 3 and 4 positive supply
7
OUT4+
Channel 4 (right rear) positive output
SDAlm
I2C
data/legacy mode mute
9
SCLlen
I2C
clock/enable legacy mode
10
ADD1
I2C Address - First Pin
Pll loop filter / ENABLE
8
Power ground channel 4
-
Open Drain Output
Power Output
Battery
Power Ground
Battery
Power Output
Signal Input/Output
Signal Input
Logic Input
11
PLLen
12
OUT 2+
Channel 2 (Left Rear) positive output
13
VCC12
Channel 1 and 2 positive supply
14
NC
15
PWGND2
16
VCC12
17
OUT 2-
18
WS
19
OUT 1-
20
LOAD1A
Load Selection (channels 1 and 2)
Logic Input
21
LOAD1B
Load Selection (channels 3 and 4)
Logic Input
22
PWGND1
Power ground channel 1
Power Ground
23
OUT 1+
Channel 1 (Left Front) positive output
Power Output
Not Connected
Power ground channel 2
Channel 1 and 2 positive supply
Channel 2 (Left Rear) negative output
Word select (I2S bus)
Channel 1 (Left Front) negative output
Not Connected
Input
Power Output
Battery
Power Ground
Battery
Power Output
Logic Input
Power Output
24
NC
25
SCK
Serial clock (I2S bus)
Logic Input
-
26
SD24
Serial data channels 2 and 4 (I2S bus)
Logic Input
27
SD13
Serial data channels 1 and 3 (I2S bus)
Logic Input
28
DGND
Digital ground
Signal Ground
29
AGND
Analog ground
Signal Ground
30
D3V3
Digital 3.3 V supply filter
Digital Regulator
31
A3V3
Analog 3.3 V supply filter
Analog Regulator
32
OUT3+
33
PWGND3
34
UNMUTEhw
35
36
Channel 3 (right front) positive output
Power Output
Power ground channel 3
Power Ground
Unmute Hardware
Logic input
ADD2
I2C Address - Second Pin
Logic Input
OUT3-
Channel 3 (right front) negative output
DocID025017 Rev 4
Power Output
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Package information
2
TDA7802
Package information
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
Figure 3. PowerSO36 (slug up) mechanical data and package dimensions
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TDA7802
Package information
Figure 4. Flexiwatt27 (vertical) mechanical data and package dimensions
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Package information
TDA7802
Figure 5. Flexiwatt27 (SMD) mechanical data and package dimensions
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TDA7802
3
Revision history
Revision history
Table 4. Document revision history
Date
Revision
Changes
18-Jul-2013
1
Initial release.
18-Sep-2013
2
Updated Disclaimer.
24-Oct-2014
3
Added ‘AEC Q100 rev. G compliant’ in Features list.
27-Oct-2014
4
Modified in cover page the feature ‘AEC Q100 rev. G
compliant’ in ‘Qualification in accordance to AEC
Q100 rev. G standard’.
DocID025017 Rev 4
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TDA7802
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© 2014 STMicroelectronics – All rights reserved
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