TDA7802
High efficiency digital input quad power amplifier with built-in
diagnostics features, ’start stop’ compatible
Data brief
Description
Flexiwatt27
Flexiwatt27 (SMD)
PowerSO36
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 4Ω@ 14.4 V, 1 kHz, THD = 10 %
– Max output power: 4 x 72 W 2
Ω
Flexible mode control:
– Full I
2
C 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 I
2
C 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):
– I
2
S 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 I
2
S (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 I
2
C bus. The same I
2
C 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.
TDA7802
TDA7802SM
TDA7802SMTR
TDA7802PD
TDA7802PDTR
Device summary
Package
Flexiwatt27 (Vertical)
Flexiwatt27 (SMD)
PowerSO36
Packing
Tube
Tube
Tape & reel
Tube
Tape & reel
Order code
DocID025017 Rev 4
1/10
www.st.com
For further information contact your local STMicroelectronics sales office.
Block diagram and pins description
Table 2. Flexiwatt27 pins description
N°
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
Pin
TAB
PLLen
PWGND2
OUT 2-
WS
OUT 2+
VCC12
OUT 1-
PWGND1
OUT 1+
SCK
SD24
SD13
DGND
AGND
D3V3
A3V3
OUT3+
PWGND3
OUT3-
VCC34
OUT4+
TAB connection
Pll loop filter / ENABLE
Power ground channel 2
Channel 2 (Left Rear) negative output
Word select (I2S bus)
Channel 2 (Left Rear) positive output
Channel 1 and 2 positive supply
Channel 1 (Left Front) negative output
Power ground channel 1
Channel 1 (Left Front) positive output
Serial clock (I2S bus)
Serial data channels 2 and 4 (I2S bus)
Serial data channels 1 and 3 (I2S bus)
Digital ground
Analog ground
Digital 3.3 V supply filter
Analog 3.3 V supply filter
Channel 3 (right front) positive output
Power ground channel 3
Channel 3 (right front) negative output
Channels 3 and 4 positive supply
Channel 4 (right rear) positive output
Clip detector and diagnostic output:
Overcurrent protection intervention
Thermal warning
POR
Output DC offset
Output short to VCC/GND
Channel 4 (right rear) negative output
Power ground channel 4
I
2
C data/legacy mode mute
I
2
C clock/enable legacy mode
Function
TDA7802
Ground
Input
Power Ground
Power Output
Logic Input
Power Output
Battery
Power Output
Power Ground
Power Output
Logic Input
Logic Input
Logic Input
Signal Ground
Signal Ground
Digital Regulator
Analog Regulator
Power Output
Power Ground
Power Output
Battery
Power Output
23
CDdiag
Open Drain Output
24
25
26
27
OUT4-
PWGND4
SDAlm
SCLlen
Power Output
Power Ground
Signal Input/Output
Signal Input
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DocID025017 Rev 4
TDA7802
Block diagram and pins description
Table 3. PowerSO36 pins description
N°
1
Pin
TAB
TAB connection
Clip detector and diagnostic output:
Overcurrent protection intervention
Thermal warning
POR
Channel 4 (right rear) negative output
Channels 3 and 4 positive supply
Power ground channel 4
Channels 3 and 4 positive supply
Channel 4 (right rear) positive output
I
2
C data/legacy mode mute
I
2
C clock/enable legacy mode
I2C Address - First Pin
Pll loop filter / ENABLE
Channel 2 (Left Rear) positive output
Channel 1 and 2 positive supply
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
Load Selection (channels 1 and 2)
Load Selection (channels 3 and 4)
Power ground channel 1
Channel 1 (Left Front) positive output
Not Connected
Serial clock (I2S bus)
Serial data channels 2 and 4 (I2S bus)
Serial data channels 1 and 3 (I2S bus)
Digital ground
Analog ground
Digital 3.3 V supply filter
Analog 3.3 V supply filter
Channel 3 (right front) positive output
Power ground channel 3
Unmute Hardware
I2C Address - Second Pin
Channel 3 (right front) negative output
Function
-
2
CDdiag
Open Drain Output
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
OUT4-
VCC34
PWGND4
VCC34
OUT4+
SDAlm
SCLlen
ADD1
PLLen
OUT 2+
VCC12
NC
PWGND2
VCC12
OUT 2-
WS
OUT 1-
LOAD1A
LOAD1B
PWGND1
OUT 1+
NC
SCK
SD24
SD13
DGND
AGND
D3V3
A3V3
OUT3+
PWGND3
UNMUTEhw
ADD2
OUT3-
Power Output
Battery
Power Ground
Battery
Power Output
Signal Input/Output
Signal Input
Logic Input
Input
Power Output
Battery
-
Power Ground
Battery
Power Output
Logic Input
Power Output
Logic Input
Logic Input
Power Ground
Power Output
-
Logic Input
Logic Input
Logic Input
Signal Ground
Signal Ground
Digital Regulator
Analog Regulator
Power Output
Power Ground
Logic input
Logic Input
Power Output
DocID025017 Rev 4
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Microcontroller MCU
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