The TDA7564B is a new BCD technology quad
bridge type of car radio amplifier in Flexiwatt25 /
Table 1.Device summary
2
C bus driving:
– Standby
– Independent front/rear soft play/mute
– Selectable gain (for low noise line output
function)
– High efficiency enable/disable
2
–I
C bus digital diagnostics (including AC
and DC load detection)
warning
TDA7564B
with built-in diagnostics feature
Flexiwatt25
(Vertical)
PowerSO36
(slug up)
PowerSO36 package specially intended for car
radio applications.
Thanks to the DMOS output stage the TDA7564B
has a very low distortion allowing a clear powerful
sound. Among the features, its superior efficiency
performance coming from the internal exclusive
structure, makes it the most suitable device to
simplify the thermal management in high power
sets.
The dissipated output power under average
listening condition is in fact reduced up to 50%
when compared to the level provided by
conventional class AB solutions. This device is
equipped with a full diagnostics array that
communicates the status of each speaker through
Output noise voltage 1Rg = 600 Ω 20 Hz to 22 kHz-35100µV
IN1
Output noise voltage 2
IN2
SVRSupply Voltage Rejection
= 1 W to 10 W; STD mode
P
O
HE MODE; PO = 1.5 W
HE MODE; P
G
= 12 dB; STD mode
V
= 0.1 to 5 V
V
O
= 8 W
O
RMS
Rg = 600 Ω; GV = 12 dB
20 Hz to 22 kHz
f = 100 Hz to 10 kHz; V
= 600 Ω
R
g
= 1 Vpk;
r
0.02
-
0.015
0.15
-0.020.05%
-1230µV
5060-dB
0.1
0.1
0.5
BWPower bandwidth-100--kHz
A
V
V
CMRRInput CMRRV
T
T
CD
CD
Standby attenuation-90110-dB
SB
I
Standby currentV
SB
Mute attenuation-80100-dB
A
M
Offset voltageMute and play-1000100mV
OS
Min. supply mute threshold-6.578V
AM
Turn ON DelayD2/D1 (IB1) 0 to 1-2040ms
ON
Turn OFF DelayD2/D1 (IB1) 1 to 0-2040ms
OFF
Clip det high leakage currentCD off-05μA
LK
Clip det sat. voltageCD on; ICD = 1 mA-150300mV
SAT
= 0-2550µA
st-by
= 1 Vpk-pk; Rg = 0 Ω-55-dB
CM
D0 (IB1) = 151015%
CD
Clip det THD level
THD
D0 (IB1) = 0123%
%
Doc ID 12734 Rev 39/34
Electrical specificationsTDA7564B
Table 4.Electrical characteristics (continued)
SymbolParameterTest conditionMin.Typ.Max.Unit
Turn on diagnostics 1 (Power amplifier mode)
Short to GND det. (below this
Pgnd
Pvs
Pnop
LscShorted load det.--0.5Ω
LopOpen load det.85--Ω
LnopNormal load det.1.5-45Ω
Turn on diagnostics 2 (Line driver mode)
Pgnd
limit, the output is considered in
short circuit to GND)
Short to Vs det. (above this limit,
the output is considered in short
circuit to V
)
S
Normal operation thresholds.
(Within these limits, the output is
considered without faults).
Short to GND det. (below this
limit, the output is considered in
short circuit to GND)
--1.2V
Vs -1.2--V
Power amplifier in standby
1.8-Vs -1.8V
Power amplifier in standby--1.2V
Short to Vs det. (above this limit,
Pvs
the output is considered in short
-Vs -1.2--V
circuit to VS)
Normal operation thresholds.
Pnop
(Within these limits, the output is
-1.8-Vs -1.8V
considered without faults).
LscShorted load det.---2Ω
LopOpen load det.-330--Ω
LnopNormal load det.-7-180Ω
Permanent diagnostics 2 (Power amplifier mode or line driver mode)
Short to GND det. (below this
Pgnd
limit, the output is considered in
--1.2V
short circuit to GND)
Power amplifier in mute or play,
one or more short circuits
protection activated
Vs -1.2--V
Pvs
Short to Vs det. (above this limit,
the output is considered in short
circuit to VS)
Normal operation thresholds.
Pnop
(within these limits, the output is
1.8-Vs -1.8V
considered without faults).
Pow. amp. mode--0.5Ω
L
I
Shorted load det.
SC
Offset detection
V
O
Normal load current detectionVO < (VS - 5)pk IB2 (D7) = 0500--mA
NLH
Line driver mode--2Ω
Power amplifier in play,
AC Input signals = 0
±1.5±2±2.5V
10/34Doc ID 12734 Rev 3
TDA7564BElectrical specifications
(V)
(V)
(V)
)
Table 4.Electrical characteristics (continued)
SymbolParameterTest conditionMin.Typ.Max.Unit
I
I
I
2
I
C bus interface
S
V
Normal load current detectionVO < (VS - 5)pk IB2 (D7) = 1250-mA
NLL
Open load current detectionVO < (VS - 5)pk IB2 (D7) = 0--250mA
OLH
Open load current detectionVO < (VS - 5)pk IB2 (D7) =1--125mA
OLL
Clock frequency---400kHz
CL
V
Input low voltage---1.5V
IL
Input high voltage-2.3--V
IH
3.4 Electrical characteristics curves
Figure 5.Quiescent current vs. supply
voltage
Id (mA)
250
230
210
190
170
150
130
110
90
70
Vin = 0
NO LOADS
8 1012141618
Vs
Figure 6.Output power vs. supply voltage
Po (W)
70
65
60
55
50
45
40
35
30
25
20
15
10
5
89101112131415161718
(4 Ω)
RL = 4 Ohm
f = 1 KHz
Po-max
THD = 10 %
THD = 1 %
Vs
Figure 7.Output power vs. supply voltage
(2 Ω)
Po (W)
100
90
80
70
60
50
40
30
20
10
RL = 2 Ohm
f = 1 KHz
8910111213141516
Vs
Po-max
THD = 10 %
THD = 1 %
Doc ID 12734 Rev 311/34
Figure 8.Distortion vs. output power (4 Ω,
STD)
THD (%)
10
STANDARD MODE
Vs = 14.4 V
RL = 4 Ohm
1
f = 10 KHz
0.1
f = 1 KHz
0.01
0.1110
Po (W
Electrical specificationsTDA7564B
(W)
(W)
(Hz)
(Hz)
(Hz)
(Hz)
Figure 9.Distortion vs. output power (4 Ω, HI-
EFF)
THD (%)
10
HI-EFF MODE
Vs = 14.4 V
RL = 4 Ohm
1
f = 10 KHz
0.1
f = 1 KHz
0.01
0.001
0.1110
Po
Figure 10. Distortion vs. output power (2 Ω,
STD)
THD (%)
10
STANDARD MODE
Vs = 14.4 V
RL = 2 Ohm
1
0.1
0.01
0.1110
f = 10 KHz
f = 1 KHz
Po
Figure 11. Distortion vs. frequency (4 Ω)Figure 12. Distortion vs. frequency (2 Ω)
10
1
THD (%)
STANDARD MODE
Vs = 14.4 V
RL = 4 Ohm
Po = 4 W
10
1
THD (%)
STANDARD MODE
Vs = 14.4 V
RL = 2 Ohm
Po = 8 W
0.1
0.01
10100100010000
f
0.1
10100100010000
f
Figure 13. Crosstalk vs. frequencyFigure 14. Supply voltage rejection vs. freq.
CROSSTALK (dB)
90
80
70
60
STANDARD MODE
RL = 4 Ohm
50
Po = 4 W
Rg = 600 Ohm
40
30
20
10100100010000
f
SVR (dB)
90
80
70
60
50
STD & HE MODE
40
Rg = 600 Ohm
Vripple = 1 Vpk
30
20
10100100010000
f
12/34Doc ID 12734 Rev 3
TDA7564BElectrical specifications
(W)
(W)
(W)
(W)
Figure 15. Power dissipation and efficiency vs.
output power (4 Ω, STD, SINE)
n
Ptot
n (%)
90
80
70
60
50
40
30
20
10
0
Ptot (W)
90
80
STANDARD MODE
Vs = 14.4 V
70
RL = 4 x 4 Ohm
f = 1 KHz SINE
60
50
40
30
20
10
0
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
Po
Figure 17. Power dissipation vs. average
output power (audio program
simulation, 4 Ω)
Ptot (W)
45
40
Vs = 14 V
RL = 4 x 4 Ohm
35
GAUSSIAN NOISE
30
25
20
15
10
5
0
012345
Po
CLIP
START
STD MODE
HI-EFF MODE
Figure 16. Power dissipation and efficiency vs.
output power (4 Ω, Hi-eff, SINE)
Ptot (W)
90
80
HI-EFF MODE
Vs = 14.4 V
70
RL = 4 x 4 Ohm
f = 1 KHz SINE
60
50
40
30
20
10
0
0.1110
Po
Ptot
n
n (%)
90
80
70
60
50
40
30
20
10
0
Figure 18. Power dissipation vs. average
output power (audio program
simulation, 2 Ω)
Ptot (W)
90
80
Vs = 14 V
RL = 4 x 2 Ohm
70
GAUSSIAN NOISE
60
50
40
30
20
10
0
0123456789
Po
CLIP
START
STD MODE
HI-EFF MODE
Doc ID 12734 Rev 313/34
Diagnostics functional descriptionTDA7564B
4 Diagnostics functional description
4.1 Turn-on diagnostic
It is activated at the turn-on (standby out) under I2C bus request. Detectable output faults
are:
●Short to GND
●Short to Vs
●Short across the speaker
●Open speaker
To verify if any of the above misconnections are in place, a subsonic (inaudible) current
pulse (Figure 19) is internally generated, sent through the speaker(s) and sunk back.The
Turn-on diagnostic status is internally stored until a successive diagnostic pulse is
requested (after a I
If the "standby out" and "diag. enable" commands are both given through a single
programming step, the pulse takes place first (power stage still in standby mode, low,
outputs = high impedance).
Afterwards, when the amplifier is biased, the permanent diagnostic takes place. The
previous turn-on state is kept until a short appears at the outputs.
2
C reading).
Figure 19. Turn - on diagnostic: working principle
Vs~5V
Isource
CH+
CH-
Isink
I (mA)
Isource
Isink
~100mS
Measure time
t (ms)
Figure 20 and 21 show SVR and output waveforms at the turn-on (standby out) with and
without turn-on diagnostic.
Figure 20. SVR and output behavior (case 1: without turn-on diagnostic)
Vsvr
Out
Permanent diagnostic
acquisition time (100mS Typ)
Bias (power amp turn-on)
Diagnostic Enable
(Permanent)
FAULT
event
Read Data
t
I2CB DATA
14/34Doc ID 12734 Rev 3
Permanent Diagnostics data (output)
permitted time
TDA7564BDiagnostics functional description
Figure 21. SVR and output pin behavior (case 2: with turn-on diagnostic)
Vsvr
Out
Turn-on diagnostic
acquisition time (100mS Typ)
Permanent diagnostic
acquisition time (100mS Typ)
I2CB DATA
Diagnostic Enable
(Turn-on)
Bias (power amp turn-on)
permitted time
Turn-on Diagnostics data (output)
permitted time
Read Data
Diagnostic Enable
(Permanent)
Permanent Diagnostics data (output)
FAULT
event
permitted time
The information related to the outputs status is read and memorized at the end of the
current pulse top. The acquisition time is 100 ms (typ.). No audible noise is generated in the
process. As for short to GND / Vs the fault-detection thresholds remain unchanged from 26
dB to 12 dB gain setting. They are as follows:
Figure 22. Short circuit detection thresholds
t
S.C. to GNDxS.C. to Vs
0V1.8VVS-1.8VV
1.2VVS-1.2V
xNormal Operation
D01AU1253
S
Concerning short across the speaker / open speaker, the threshold varies from 26 dB to 12
dB gain setting, since different loads are expected (either normal speaker's impedance or
high impedance). The values in case of 26 dB gain are as follows:
Figure 23. Load detection thresholds - high gain setting
S.C. across Load xOpen Load
0V1.5Ω
0.5Ω
45Ω
xNormal Operation
85Ω
AC00060
Infinite
If the line-driver mode (Gv= 12 dB and Line Driver Mode diagnostic = 1) is selected, the
same thresholds will change as follows:
Figure 24. Load detection threshold - low gain setting
S.C. across Load xOpen Load
0Ω7Ω180Ωinfinite
2Ω330Ω
Doc ID 12734 Rev 315/34
xNormal Operation
D02AU1340
Diagnostics functional descriptionTDA7564B
4.2 Permanent diagnostics
Detectable conventional faults are:
–Short to GND
–Short to V
–Short across the speaker
The following additional features are provided:
–Output offset detection
The TDA7564B has 2 operating statuses:
1.Restart mode. The diagnostic is not enabled. Each audio channel operates
independently from each other. If any of the a.m. faults occurs, only the channel(s)
interested is shut down. A check of the output status is made every 1 ms (Figure 25).
Restart takes place when the overload is removed.
2. Diagnosticmode. It is enabled via I
(such to cause the intervention of the short-circuit protection) occurs to the speakers
outputs. Once activated, the diagnostics procedure develops as follows (Figure 26):
–To avoid momentary re-circulation spikes from giving erroneous diagnostics, a
check of the output status is made after 1ms: if normal situation (no overloads) is
detected, the diagnostic is not performed and the channel returns back active.
–Instead, if an overload is detected during the check after 1 ms, then a diagnostic
cycle having a duration of about 100 ms is started.
–After a diagnostic cycle, the audio channel interested by the fault is switched to
restart mode. The relevant data are stored inside the device and can be read by
the microprocessor. When one cycle has terminated, the next one is activated by
an I
operating time.
–To check the status of the device a sampling system is needed. The timing is
chosen at microprocessor level (over half a second is recommended).
S
2
C bus and self activates if an output overload
2
C reading. This is to ensure continuous diagnostics throughout the car-radio
Figure 25. Restart timing without diagnostic enable (permanent) - Each 1mS time, a
sampling of the fault is done
1-2mS
Overcurrent and short
circuit protection intervention
(i.e. short circuit to GND)
1mS1mS1mS
Figure 26. Restart timing with diagnostic enable (permanent)
1-2mS100/200mS1mS1mS
Overcurrent and short
circuit protection intervention
(i.e. short circuit to GND)
16/34Doc ID 12734 Rev 3
1mS
Out
t
Short circuit removed
t
Short circuit removed
TDA7564BDiagnostics functional description
4.3 Output DC offset detection
Any DC output offset exceeding ±2 V are signalled out. This inconvenient might occur as a
consequence of initially defective or aged and worn-out input capacitors feeding a DC
component to the inputs, so putting the speakers at risk of overheating.
This diagnostic has to be performed with low-level output AC signal (or Vin = 0).
The test is run with selectable time duration by microprocessor (from a "start" to a "stop"
command):
–Start = Last reading operation or setting IB1 - D5 - (offset enable) to 1
–Stop = Actual reading operation
Excess offset is signalled out if persistent throughout the assigned testing time. This feature
is disabled if any overloads leading to activation of the short-circuit protection occurs in the
process.
4.4 AC diagnostic
It is targeted at detecting accidental disconnection of tweeters in 2-way speaker and, more
in general, presence of capacitive (AC) coupled loads.
This diagnostic is based on the notion that the overall speaker's impedance (woofer +
parallel tweeter) will tend to increase towards high frequencies if the tweeter gets
disconnected, because the remaining speaker (woofer) would be out of its operating range
(high impedance). The diagnostic decision is made according to peak output current
thresholds, and it is enabled by setting (IB2-D2) = 1. Two different detection levels are
available:
–High current threshold IB2 (D7) = 0
Iout > 500 mApk = normal status
Iout < 250 mApk = open tweeter
–Low current threshold IB2 (D7) = 1
Iout > 250 mApk = normal status
Iout < 125 mApk = open tweeter
To correctly implement this feature, it is necessary to briefly provide a signal tone (with the
amplifier in "play") whose frequency and magnitude are such to determine an output current
higher than 500 mApk with IB2(D7)=0 (higher than 250mApk with IB2(D7)=1) in normal
conditions and lower than 250 mApk with IB2(D7)=0 (lower than 125 mApk with IB2(D7)=1)
should the parallel tweeter be missing.
The test has to last for a minimum number of 3 sine cycles starting from the activation of the
AC diagnostic function IB2<D2>) up to the I
confirm presence of tweeter, it is necessary to find at least 3 current pulses over the above
threadless over all the measuring period, else an "open tweeter" message will be issued.
The frequency / magnitude setting of the test tone depends on the impedance
characteristics of each specific speaker being used, with or without the tweeter connected
(to be calculated case by case). High-frequency tones (> 10 kHz) or even ultrasonic signals
are recommended for their negligible acoustic impact and also to maximize the impedance
module's ratio between with tweeter-on and tweeter-off.
Figure 27 shows the load impedance as a function of the peak output voltage and the
relevant diagnostic fields.
Doc ID 12734 Rev 317/34
2
C reading of the results (measuring period). To
Diagnostics functional descriptionTDA7564B
This feature is disabled if any overloads leading to activation of the short-circuit protection
occurs in the process.
Figure 27. Current detection high: load impedance |Z| vs. output peak voltage
Load |z| (Ohm)
50
Low current detection area
30
D5 = 1 of the DBx byres
20
(Open load)
Iout (peak) <250mA
Iout (peak) >500mA
10
IB2(D7) = 0
5
3
2
1
12345678
High current detection area
(Normal load)
D5 = 0 of the DBx bytes
Vout (Peak)
Figure 28. Current detection low: load impedance |Z| vs. output peak voltage
Load |z| (Ohm)
50
Low current dete ction area
30
D5 = 1 of the DBx byres
20
10
5
3
2
1
0.5
(Open load)
1
1.5
High current detection area
(Normal load)
D5 = 0 of the DBx bytes
2
Vout (Peak)
2.5
3
3.54
Iout (peak) <125mA
Iout (peak) >250mA
IB2(D7) = 1
18/34Doc ID 12734 Rev 3
TDA7564BMultiple faults
5 Multiple faults
When more misconnections are simultaneously in place at the audio outputs, it is
guaranteed that at least one of them is initially read out. The others are notified after
successive cycles of I
This is true for both kinds of diagnostic (turn-on and permanent).
The table below shows all the couples of double-fault possible. It should be taken into
account that a short circuit with the 4 ohm speaker unconnected is considered as double
fault.
Table 5.Double fault table for turn-on diagnostic
2
C reading and faults removal, provided that the diagnostic is enabled.
S. GND (so)S. GND (sk)S. VsS. Across L.Open L.
S. GND (so)S. GNDS. GND
S. GND (sk)/S. GNDS. VsS. GNDOpen L. (*)
S. Vs//S. VsS. VsS. Vs
S. Across L.///S. Across L.N.A.
Open L.////Open L. (*)
S. GND (so) / S. GND (sk) in the above table make a distinction according to which of the 2
outputs is shorted to ground (test-current source side= so, test-current sink side = sk). More
precisely, in Channels LF and RR, so = CH+, sk = CH-; in Channels LR and RF, so = CH-, sk
= CH+.
In permanent diagnostic the table is the same, with only a difference concerning open
load (*), which is not among the recognizable faults. Should an Open Load be present
during the device's normal working, it would be detected at a subsequent Turn on Diagnostic
cycle (i.e. at the successive car radio turn-on).
5.1 Faults availability
All the results coming from I2C bus, by read operations, are the consequence of
measurements inside a defined period of time. If the fault is stable throughout the whole
period, it will be sent out.
S. Vs + S.
GND
S. GNDS. GND
To guarantee always resident functions, every kind of diagnostic cycles (turn-on, permanent,
offset) will be reactivate after any I
2
C reading operation. So, when the micro reads the I2C, a
new cycle will be able to start, but the read data will come from the previous diag. cycle (i.e.
The device is in turn-on state, with a short to GND, then the short is removed and micro
reads I
cycle. If another I
to observe a change in diagnostic bytes, two I
2
C. The short to GND is still present in bytes, because it is the result of the previous
2
C reading operation occurs, the bytes do not show the short). In general
Doc ID 12734 Rev 319/34
2
C reading operations are necessary.
Thermal protectionTDA7564B
6 Thermal protection
Thermal protection is implemented through thermal foldback (Figure 29).
Thermal foldback begins limiting the audio input to the amplifier stage as the junction
temperatures rise above the normal operating range. This effectively limits the output power
capability of the device thus reducing the temperature to acceptable levels without totally
interrupting the operation of the device.
The output power will decrease to the point at which thermal equilibrium is reached.
Thermal equilibrium will be reached when the reduction in output power reduces the
dissipated power such that the die temperature falls below the thermal foldback threshold.
Should the device cool, the audio level will increase until a new thermal equilibrium is
reached or the amplifier reaches full power. Thermal foldback will reduce the audio output
level in a linear manner.
Three thermal warning are available through the I
Figure 29. Thermal foldback diagram
TH. WARN.
Vout
TH. WARN.
ON
TH. WARN.
ON
ON
2
C bus data.
Vout
CD out
125°
140°
< T
155°
SD
TH. SH.
START
(with same input
> T
SD
signal)
6.1 I2C programming/reading sequences
A correct turn on/off sequence respectful of the diagnostic timings and producing no audible
noises could be as follows (after battery connection):
Turn-on: (standby out + diag enable) --- 500 ms (min.) --- muting out
Turn-off: muting in --- 20 ms --- (diag disable + standby in)
Car radio Installation: diag enable (write) --- 200 ms --- I
disappear).
AC test: feed h.f. tone -- AC diag enable (write) --- wait > 3 cycles --- I
(repeat I
Offset test: device in play (no signal) -- offset enable - 30ms - I
(repeat I
2
C reading until tweeter-off message disappears).
2
C reading until high-offset message disappears).
TH. SH.
END
2
C read (repeat until all faults
2
°C)
Tj (
Tj ( °C)
Tj ( °C)
2
C read
C reading
20/34Doc ID 12734 Rev 3
TDA7564BFast muting
7 Fast muting
The muting time can be shortened to less than 1.5ms by setting (IB2) D5 = 1. This option
can be useful in transient battery situations (i.e. during car engine cranking) to quickly
turnoff the amplifier for avoiding any audible effects caused by noise/transients being
injected by preamp stages. The bit must be set back to “0” shortly after the mute transition.
Doc ID 12734 Rev 321/34
I2C bus interfaceTDA7564B
8 I2C bus interface
Data transmission from microprocessor to the TDA7564B and vice versa takes place
through the 2 wires I
2
C bus interface, consisting of the two lines SDA and SCL (pull-up
resistors to positive supply voltage must be connected).
8.1 Data validity
As shown by Figure 30, the data on the SDA line must be stable during the high period of
the clock. The high and low state of the data line can only change when the clock signal on
the SCL line is LOW.
8.2 Start and stop conditions
As shown by Figure 31 a start condition is a high to low transition of the SDA line while SCL
is high. The stop condition is a low to high transition of the SDA line while SCL is high.
8.3 Byte format
Every byte transferred to the SDA line must contain 8 bits. Each byte must be followed by an
acknowledge bit. The MSB is transferred first.
8.4 Acknowledge
The transmitter* puts a resistive high level on the SDA line during the acknowledge clock
pulse (see Figure 32). The receiver** the acknowledges has to pull-down (low) the SDA line
during the acknowledge clock pulse, so that the SDA line is stable low during this clock
pulse.
* Transmitter
–master (μP) when it writes an address to the TDA7564B
–slave (TDA7564B) when the μP reads a data byte from TDA7564B
** Receiver
–slave (TDA7564B) when the μP writes an address to the TDA7564B
–master (µP) when it reads a data byte from TDA7564B
Figure 30. Data validity on the I
SDA
SCL
STABLE, DATA
2
DATA LINE
VALID
C bus
CHANGE
DATA
ALLOWED
D99AU1031
22/34Doc ID 12734 Rev 3
TDA7564BI2C bus interface
Figure 31. Timing diagram on the I2C bus
SCL
2
I
CBUS
SDA
START
Figure 32. Acknowledge on the I
SCL
SDA
START
1
MSB
D99AU1032
2
C bus
23789
D99AU1033
STOP
ACKNOWLEDGMENT
FROM RECEIVER
Doc ID 12734 Rev 323/34
Software specificationsTDA7564B
9 Software specifications
All the functions of the TDA7564B are activated by I2C interface.
The bit 0 of the "Address byte" defines if the next bytes are write instruction (from µP to
TDA7564B) or read instruction (from TDA7564B to µP).
D7D0
1101100XD8 Hex
X = 0 Write to device
X = 1 Read from device
If R/W = 0, the μP sends 2 "Instruction bytes": IB1 and IB2.
The delay from 1 to 2 can be selected by software, starting from 1 ms
3a - Turn-on of the power amplifier with 26dB gain, mute on, diagnostic defeat, High eff.
mode both channels.
.
StartAddress byte with D0 = 0ACKIB1 ACKIB2ACK STOP
X000000XXXX1X011
3b - Turn-off of the power amplifier
StartAddress byte with D0 = 0ACKIB1 ACKIB2ACK STOP
X0XXXXXXXXX0XXXX
4 - Offset detection procedure enable
StartAddress byte with D0 = 0ACKIB1 ACKIB2ACK STOP
XX1XX11XXXX1X0XX
5 - Offset detection procedure stop and reading operation (the results are valid only for the
offset detection bits (D2 of the bytes DB1, DB2, DB3, DB4)
The purpose of this test is to check if a D.C. offset (2V typ.) is present on the outputs,
produced by input capacitor with anomalous leakage current or humidity between pins.
●The delay from 4 to 5 can be selected by software, starting from 1ms
6 - Current detection procedure start (the AC inputs must be with a proper signal that
depends on the type of load)
StartAddress byte with D0 = 0ACKIB1 ACKIB2ACK STOP
XX01111XXXX1X1XX
Current detection reading operation (the results valid only for the current sensor detection
bits - D5 of the bytes DB1, DB2, DB3, DB4)
(1) “D and E1” do not include mold flash or protusions.
Mold flash or protusions shall not exceed 0.15mm (0.006”).
(2) No intrusion allowed inwards the leads.
mminch
MIN. TYP. MAX. MIN. TYP. MAX.
-0.040
0.0012--0.0016
OUTLINE AND
MECHANICAL DATA
PowerSO36 (SLUG UP)
32/34Doc ID 12734 Rev 3
7183931 G
TDA7564BRevision history
12 Revision history
Table 12.Document revision history
DateRevisionChanges
14-Sep-20061Initial release.
Add new package and part numbers in Table 1: Device
summary on page 1.
Add PowerSO36 pin connections diagram Figure 4 on page 7.
Changed the max. value of the “Lonp” parameter in Ta b le 4 on
22-Jan-20072
15-Dec-20093
page 8.
Modified Figure 23 on page 15.
Add PowerSO36 package information Figure 35 on page 32.
Changed the min. and typ. value of the V
Ta bl e 4 .
Updated Ta b l e 3 : T h er m a l d a t a .
Updated Figure 35: PowerSO36 (slug up) mechanical data and
package dimensions on page 32.
parameter in the
M
Doc ID 12734 Rev 333/34
TDA7564B
Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
time, without notice.
All ST products are sold pursuant to ST’s terms and conditions of sale.
Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no
liability whatsoever relating to the choice, selection or use of the ST products and services described herein.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this
document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products
or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such
third party products or services or any intellectual property contained therein.
UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT
RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING
APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY,
DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE
GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK.
Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void
any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any
liability of ST.
ST and the ST logo are trademarks or registered trademarks of ST in various countries.
Information in this document supersedes and replaces all information previously supplied.
The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.