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PDF TDA8596 Data sheet ( Hoja de datos )
| Número de pieza | TDA8596 | |
| Descripción | 4 x 45 W power amplifier | |
| Fabricantes | NXP Semiconductors | |
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TDA8596
I2C-bus controlled 4 × 45 W power amplifier with symmetrical
inputs
Rev. 02 — 8 November 2007
Product data sheet
1. General description
The TDA8596 is a quad Bridge Tied Load (BTL) audio power amplifier with symmetrical
inputs, made in BCDMOS technology. It contains four independent amplifier channels in
BTL configuration with complementary (PMOST/NMOST) output stages. Temperature
warning and output signal clipping diagnosis is possible via the I2C-bus and via the
diagnostic pins (DIAG and STB pin). The temperature pre-warning level and clip detection
levels can be programmed via the I2C-bus. The status of each amplifier channel (i.e.
output offset, load connected or not, short circuit condition at the output pins) can be read
out separately.
2. Features
2.1 General
I Operates in legacy mode (non I2C-bus) and I2C-bus mode (3.3 V and 5 V compliant)
I Three hardware-programmable I2C-bus addresses
I Drives 4 Ω or 2 Ω loads
I Balanced/symmetrical inputs
I Speaker fault detection
I Programmable gain (26 dB and 16 dB) also available in legacy mode
I Independent short circuit protection per channel
I Loss of ground and loss of VP safe (with 300 mΩ series impedance and a maximum
supply decoupling capacitor of 2200 µF)
I All outputs are short-circuit proof to ground, supply voltage and across the load
I All pins are short circuit proof to ground
I Temperature-controlled gain reduction to prevent audio holes at high junction
temperatures
I Low battery voltage detection
I Qualified in accordance with AEC-Q100
2.2 I2C-bus mode
I DC load detection: open (no load), normal load, line-driver load
I AC load (tweeter) detection
I Detect which load is connected during start-up to allow the system to be configured to
select the gain accordingly (e.g. line-driver mode or normal mode).
I Independently selectable soft mute of front (channel 1 and channel 3) and rear
channels (channel 2 and channel 4)
1 page  
NXP Semiconductors
TDA8596
I2C-bus controlled 4 × 45 W power amplifier with symmetrical inputs
Table 3. Pin description …continued
Symbol
Pin
Description
PGND3
16
power ground channel 3
OUT3−
17
channel 3 negative output
OUT3+
18
channel 3 positive output
VP1
SCL
19 and 20
21
supply voltage 1
I2C-bus clock input
GAINSEL
22
gain select input (legacy mode only)
OUT4−
23
channel 4 negative output
PGND4
24
power ground channel 4
OUT4+
25
channel 4 positive output
SDA
26
I2C-bus data input/output
SVR
27
half supply filter capacitor
ADSEL
28
I2C-bus address select
STB 29
standby (I2C-bus mode) or mode pin (legacy mode);
programmable second clip indicator
OUT2+
30
channel 2 positive output
PGND2
31
power ground channel 2
OUT2−
32
channel 2 negative output
DIAG
33
diagnostic/clip detection output
VP2 34 and 35 supply voltage 2
TAB 36 heatsink connection; must be connected to ground
7. Functional description
The TDA8596 is a quad BTL audio power amplifier with symmetrical inputs, made in
BCDMOS technology. It contains four independent amplifier channels in BTL configuration
with complementary (PMOST/NMOST) output stages (see Figure 1). The status of each
amplifier channel (output offset, connected load, short circuit condition at output pins) can
be read out separately via the I2C-bus. The TDA8596 is protected against overvoltage on
the supply pins, short circuits at the output pins, overheating and loss-of-ground or
loss-of-VP conditions.
The temperature pre-warning level and the clip detection levels can be programmed via
the I2C-bus. Further, the information that will be available on the diagnostic pins (i.e. DIAG
or STB) can be programmed. Three different I2C-bus addresses can be selected by
connecting a resistor to the ADSEL pin. In case the ADSEL pin is shorted to ground, the
TDA8596 operates in legacy mode. In this mode no I2C-bus is needed and the STB pin
will change from a two level pin (Standby mode and Operating mode) to a three level pin
(Standby, Mute operating and Normal operating mode).
TDA8596_2
Product data sheet
Rev. 02 — 8 November 2007
© NXP B.V. 2007. All rights reserved.
5 of 48
5 Page 
NXP Semiconductors
TDA8596
I2C-bus controlled 4 × 45 W power amplifier with symmetrical inputs
VP
DIAG
DB2 bit D7
POR
IB1 bit D0
start enable
STB
twake
SVR
amplifier
output
tload
tamp_on
td(mute_off)
td(soft_mute)
Fig 5. Start-up and shut-down timing with low pop and DC load activated
toff
fast
mute
td(fast_mute)
001aad 170
TDA8596_2
Product data sheet
Rev. 02 — 8 November 2007
© NXP B.V. 2007. All rights reserved.
11 of 48
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