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TA8252H
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA8252H
Max Power 37W BTL x 4ch Audio Power IC
The TA8252H is 4ch BTL audio power amplifier for car audio application. This IC can generate more high power: POUT MAX = 37W as it is included the pure complementary PNP and NPN transistor output stage. It is designed low distortion ratio for 4ch BTL audio power amplifier,built-in stand-by function, muting function,clip detector,and diagnosis circuit. Additionally, the AUX.amplifier is built-in, it can make the beep signal etc.output to 2 channnels (out 1 and 4).It contains various kind of protectors for car audio use.
Features
* High power : POUT MAX (1) = 37W (typ.) (VCC = 14.4V, f = 1kHz, EIAJ max., RL = 4) : POUT MAX (2) = 35W (typ.) (VCC = 13.7V, f = 1kHz, EIAJ max., RL = 4) : POUT (1) = 24W (typ.) (VCC = 14.4V, f = 1kHz, THD = 10%, RL = 4) : POUT (2) = 21W (typ.) (VCC = 13.2V, f = 1kHz, THD = 10%, RL = 4) * * * * * * * * Built-in clip detector & diagnosis circuit.(pin(25)) Low distortion ratio: THD = 0.02% (typ.) (VCC = 13.2V, f = 1kHz, POUT = 5W, RL = 4)
Weight: 9.8g (typ.)
Low noise: VNO = 0.10mVrms (typ.) (VCC = 13.2V, Rg = 0, GV = 26dB, BW = 20~20kHz) Built-in stand-by switch function (pin(2)) Built-in multing function (pin(24)) Built-in AUX. amplifier from single input (pin(16)) to 2 channels output; out1 and 4 Built-in various protection circuit : Thermal shut down, Over voltage, Out to GND, Out to VCC, Out to Out short. Operating supply voltage: VCC (opr) = 9~18V
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Block Diagram
C5
1 20 6
TAB
VCC1 +
VCC2 OUT1(+)
17
15
IN1
C1
+ - -
GND1
-
18
OUT1(-) OUT2(+)
19
+
14
23
IN2
C1
+ -
GND2
22
OUT2(-)
21
16
AUX IN OUT3(+)
+
11
9
IN3
C1
+ -
GND3
8
OUT3(-) OUT4(+)
7
+
12
3
IN4
C1 PRE-GND
13
+ -
GND4
4
OUT4(-)
5
RIP
10
CLIP OUT & STBY DIAGNOSIS OUT MUTE
2 25 24 +
C2 -+
R1
-
C4
C3 RL RL RL RL
+
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Caution And Application Method
(description is made only on the single channel.)
1. Voltage gain adjustment This IC has no NF (negative feedback) terminals. Therefore, the voltage gain can't adjusted, but it makes the device a space and total costs saver.
Amp. 1 Input + - Amp. 2A + - Amp. 2B + -
(Fig.1) Block diagram
The voltage gain of amp.1: GV1 = 0dB The voltage gain of amp.2A, B: GV2 = 20dB The voltage gain of BTL connection: GV (BTL) = 6dB Therefore, the total voltage gain is decided by expression below. GV = GV1 + GV2 + GV (BTL) = 0 + 20 + 6 = 26 dB
2. Stand-by SW function (pin(2)) By means of controlling pin(2) (stand-by terminal) to high and low, the power supply can be set to on and off. The threshold voltage of pin(2) is set at about 3VBE (typ.), and the power supply current is about 2A (typ.) at the stand-by state.
VCC
ON OFF
Power
2
10k 2VBE to Bias cutting circuit
Control voltage of pin(2): V (SB)
Stand-by On Off Power Off On V (SB) (V) 0~1.5 3~6
(Fig.2) With pin(2) set to High, Power is turned ON
Adjustage of stand-by SW (1) Since VCC can directly be controlled to on or off by the microcomputer, the switching relay can be omitted. (2) Since the control current is microscopic, the switching relay of small current capacity is satisfactory for switching
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Relay Battery VCC
Large current capacity switch
Battery VCC
From microcomputer
Conventional Method
Small current capacity switch
Directly from microcomputer
Battery Stand-By VCC Stand-By VCC
Battery
Stand-by switch method (Fig.3)
3. Multing function (pin(24)) By means of controlling pin(24) less than 0.5V, it can make the audio muting condition. The muting time constant is decided by R1 and C4 and these parts is related the pop noise at power on / off. The series resistance; R1 must be set up less than 15k, we recommend 10k. The muting function have to be controlled by a transistor, FET and -COM port which has IMUTE > 250A ability. Terminal (24) must not be pulled up and it shall be controlled by open / low.
ATT - Vmute
20 R1 = 15k 10k 5k
C4
I(100A) IMUTE(OFF)
24
R1
A
Mute attenuation ATT (dB)
0
IMUTE VMUTE
-20 -40
-60
-80 -100 0
VCC = 13.2 V Po = 10 W RL = 4 f = 1 kHz 0.4 0.8 1.2 1.6 2 2.4 2.8
Pin(24) voltage : Vmute (V)
(Fig.4) Muting function
(Fig.5) Mute attenuation-Vmute (V)
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4.AUX. input (pin(16)) The pin(16) is for input terminal of AUX. amplifier. The total gain is 0dB by using of AUX. amplifier. Therfore, the -COM can directly drive the AUX. amplifier. Beep sound or voice synthesizer signal can be input to pin(16) directly.
-COM 20dB AMP. IN + -
AUX-IN
16 -20dB AUX AMP
+
OUT(+)
-
OUT(-)
(Fig.6) AUX input
5. Diagnosis output (pin(25)) The diagnosis output terminal of pin(25) has open collector output structure on clip as shown in Fig.7. In unusual case that output terminal of power amp. is condition of output to VCC or output to GND short and over voltage input mode, it is possible to protect all the system of apparatus as well as power IC protection. In case of being unused this function, use this IC as open-connection on pin(25).
(Application) 5V
25
5V
25
V3 5V GND t
Clip detector output Diagnosis output
-COM
LED/LCD
(Flashing)
Alarm (Announcement from a speaker.)
RegulatorOFF
(RelayOFF) Memory (Count and record)
Outpout short or over voltage input
Pin(25): Open collector output (active low) (Fig.7) (Fig.8)
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6. Output clip detection function (pin(25)) The output clip detection terminal of pin(25) has the open collector output structure on chip as shown in Fig.9. In case that the output waveform is clipping, the clip detection circuit is operated and NPN tr. is turned on. It is possible to improve the audio quality with controlling the volume, tone control circuit through L.P.F. smoothing circuit as shown in Fig.9. In case of being unused this function, use this IC as open connection on pin(25). (Application)
5V
25
Clip detector output Diagnosis output Pin
25
L.P.F. Smoothing circuit
Volume control circuit Tone control circuit
: Open collector output (active low) (Fig.9)
AC (A) Output (AC wave form) (A)
t DC (B) Clip detector circuit (internal) (B)
t DC (C) Clip DET. terminal (pin 25 ) (C) 5V
GND
t
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7. Cross talk The cross talk characteristics of the IC is not good between out1 and 2, out3 and 4. So we recommend to use by below method.
Out1, 2 Out3, 4 L-ch (or R-ch) R-ch (or L-ch)
And, please refer to below table in case of applying the AUX. in because it is out to out1 and 4. ex) In case of the signal from AUX. in to front speakers.
Out1 Out2 Out3 Out4 Front Rear Rear Front L-ch (or R-ch) AUX. out -- -- AUX. out
R-ch (or L-ch)
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Maximum Rating (Ta = 25C)
Characteristic Peak supply voltage (0.2s) DC supply voltage Operating supply voltage Output current (peak) Power dissipation Operating temperature Storage temperature Symbol VCC (surge) VCC (DC) VCC (opr) IO (peak) PD (*) Topr Tstg Rating 50 25 18 9 250 -40~85 -55~150 Unit V V V A W C C
(*): Package thermal resistance j-T = 0.5C / W (typ.) (Ta = 25C, with infinite heat sink)
Electrical Characteristics
(unless otherwise specified VCC = 13.2V, f = 1kHz, RL = 4, Ta = 25C)
Characteristic Quiescent current Symbol ICCQ POUT MAX (1) Output power POUT MAX (2) POUT (1) POUT (2) Total harmonic distortion Voltage gain Voltage gain ratio Output noise voltage THD GV GV VNO (1) VNO (2) R.R. C.T. VOFFSET RIN ISB VSB H VSB L VM H VM L ATT M -- -- -- -- -- -- -- -- -- -- Test Circuit -- -- -- -- -- -- -- -- -- VIN = 0 VCC = 14.4V, max power VCC = 13.7V, max power VCC = 14.4V, THD = 10% THD = 10% POUT = 3W VOUT = 0.775Vrms (0dBm) VOUT = 0.775Vrms (0dBm) Rg = 0, DIN45405 Rg = 0, BW = 20Hz~20kHz frip = 100Hz, Rg = 620 Vrip = 0.775Vrms (0dBm) Rg = 620, VOUT = 0.775Vrms (0dBm) -- -- Stand-by condition Power: On Power: Off Mute: Off Mute: On, R1 = 10k Mute: On VOUT = 7.75Vrms (20dBm) at mute: Off. 0 80 Condition Min. -- -- -- -- 19 -- 24 -1.0 -- -- 40 -- -100 -- -- 3.0 0 Typ. 200 37 35 24 21 0.02 26 0 0.12 0.10 50 65 0 90 2 -- -- Open -- 90 0.5 -- Max. 400 -- -- -- -- 0.2 28 1.0 -- 0.35 -- -- +100 -- 10 6.0 1.5 % dB dB mVrms mVrms dB dB mV k A V W Unit mA
Ripple rejection ratio Cross talk Output offset voltage Input resistance Stand-by current Stand-by control voltage Mute control voltage (*)
V
Mute attenuation
dB
(*): Muting function have to be controlled by open and low logic, which logic is a transistor, FET and -COM port of IMUTE > 250A ability. This means that the mute control terminal: Pin(24) must not be pulled-up.
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Test Circuit
3900F
TAB
VCC1 +
VCC2 OUT1(+)
17
0.22F
15
IN1
C1
+ - -
GND1
-+
C5
1
20
6
18
RL
OUT1(-) OUT2(+)
19
0.22F
14
+ IN2 + - -
16
23
C1
GND2
22
RL
OUT2(-)
21
AUX IN OUT3(+)
0.22F
11
+ IN3 + - -
9
C1
GND3
8
RL
OUT3(-) OUT4(+)
7
0.22F
12
+ IN4 + - -
3
C1 PRE-GND
13
GND4
4
RL
OUT4(-)
5
RIP
10
CLIP OUT & STBY DIAGNOSIS OUT MUTE
2 25 24
10k R1
10F C2
-+
C4 1F
-+
0.1F
C3
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THD - POUT
VCC = 13.2 V RL = 4 1ch Drive f = 1 kHz RL = 4 1ch Drive
THD - POUT
13.2V
(%)
THD
THD
(%)
10
10
VCC = 9.0V
16.0V
Total harmonic distortion
f =10kHz
0.1
Total harmonic distortion
100Hz
0.1
1kHz
0.01 0.1
1
10
0.01 0.1
1
10
Output power
POUT
(W)
Output power
POUT
(W)
ICCQ - VCC
(%)
1000 RL = VCC = 13.2 V RL = 4 POUT = 5 W 1
THD - f
(mA)
800
ICCQ
600
Total harmonic distortion
Quiescent current
THD
400
0.1 4ch
1ch 2ch
200
3ch 0.01 10 100 1k 10k 100k
0
10
20
30
Frequency f
(Hz)
Power supply voltage VCC
(V)
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POUT - f
25 40 35
GV - f
(W)
20
POUT
(dB) GV Voltage gain
THD = 10%
30 25 20 15 10 5 0 10 VCC = 13.2 V RL = 4 VOUT = 0.775 Vrms (0dBm) 100 1k 10k 100k
15
0.8%
Output power
10
5
VCC = 13.2V RL = 4 100 1k 10k 100k
0 10
Frequency f
(Hz)
Frequency f
(Hz)
VNO - Rg
350 VCC = 13.2 V -10 -20 -30 -40
R.R. - f
VCC = 13.2 V Vrip = 0.775 Vrms (0 dBm) Rg = 620 RL = 4
(Vrms)
VNO
250 200
Output noise voltage
Ripple rejection ratio R.R. (dB)
RL = 4 300 BW = ~20 k
OUT1 -50 -60 -70 -80 10 OUT3 OUT4 OUT2
150 100 50 0 10
100
1k
10k
100k
100
1k
10k
100k
Signal source resistance Rg
()
Frequency f
(Hz)
C.T. - f (OUT1)
0 -10 VCC = 13.2 V VOUT = 0.775 Vrms (0 dBm) Rg = 620 RL = 4 0 -10 VCC = 13.2 V
C.T. - f (OUT2)
VOUT = 0.775 Vrms (0 dBm) Rg = 620 RL = 4
C.T. (dB)
-20 -30 -40 -50 -60
C.T. (dB) Cross talk
-20 -30 -40 -50 -60
Cross talk
OUT2OUT1 OUT3OUT1 OUT4 OUT1 100k
OUT1OUT2 OUT4OUT2 OUT3 OUT2 100k
-70 10
100
1k
10k
-70 10
100
1k
10k
Frequency f
(Hz)
Frequency f
(Hz)
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C.T. - f (OUT3)
0 VCC = 13.2 V 0 -10 VCC = 13.2 V
C.T. - f (OUT4)
VOUT = 0.775 Vrms (0 dBm) -10 Rg = 620
VOUT = 0.775 Vrms (0 dBm) Rg = 620 RL = 4
C.T. (dB)
-20 -30 -40 -50 -60 -70 10
C.T. (dB) Cross talk
RL = 4
-20 -30
Cross talk
OUT2OUT3 OUT1OUT3 OUT4OUT3
-40 OUT2OUT4 OUT1OUT4 -50 -60 -70 10 OUT3OUT4
100
1k
10k
100k
100
1k
10k
100k
Frequency f
(Hz)
Frequency f
(Hz)
PD - POUT
(W)
80 70 f = 1 kHz RL = 4 140 120 100 (1)
PD MAX. - Ta
60 VCC = 18V 50 40 13.2V 30 20 10 0 0 10 20 30 40 50 60 9V
Allowable power dissipation PD MAX.
PD (W)
Power dissipation
(1) INFINITE HEAT SINK RJC = 0.5 C/W (2) HEAT SINK 80 (RHS = 3.5 C/W) RJC + RHS = 4 C/W 60 (3) NO HEAT SINK RJA = 31 C/W 40 (2) 20 0 0 (3) 25 50 75 100 125 150
Output power
POUT/ch (W)
Ambient temperature Ta (C)
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Package Dimensions
Weight: 9.8g (typ.)
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RESTRICTIONS ON PRODUCT USE
*
000707EBF
TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc.. The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer's own risk. This product generates heat during normal operation. However, substandard performance or malfunction may cause the product and its peripherals to reach abnormally high temperatures. The product is often the final stage (the external output stage) of a circuit. Substandard performance or malfunction of the destination device to which the circuit supplies output may cause damage to the circuit or to the product. The products described in this document are subject to the foreign exchange and foreign trade laws. The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. The information contained herein is subject to change without notice.
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