sta540san STMicroelectronics, sta540san Datasheet
sta540san
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sta540san Summary of contents
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... Thermal cut-off limiter to prevent chip from – High inductive loads – ESD Description The STA540SAN contains four single-ended, class-AB audio amplifiers assembled in a Clipwatt15 package. These amplifiers are used for high-quality sound applications. Each amplifier has integrated short-circuit and thermal protection and diagnostic functions ...
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... Short-circuit protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 8.7.1 8.7.2 8.8 Handling of the diagnostic information . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 8.9 PCB-layout grounding (general rules 8.10 Mute function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 9 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 2/26 Rail-to-rail output voltage swing with no need of bootstrap capacitors . 19 Absolute stability without any external compensation . . . . . . . . . . . . . . 19 Diagnostic facilities (pin 10 Thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Doc ID 18306 Rev 1 STA540SAN ...
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... STA540SAN 10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Doc ID 18306 Rev 1 Contents 3/26 ...
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... Block diagram 1 Block diagram Figure 1. Block diagram IN1 ST_BY IN2 IN3 IN4 4/26 VCC2 VCC1 INV INV 11 6 SVR Doc ID 18306 Rev OUT1 - + 2 OUT2 - OUT3 - + 14 OUT4 - DIAGNOSTIC 10 OUTPUT 8 9 P_GND S_GND D06AU1630_bc STA540SAN ...
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... STA540SAN 2 Pin description Figure 2. Pin connection (top view) Table 2. Pin description Pin Name 1 OUT1 2 OUT2 3 VCC1 4 IN1 5 IN2 6 SVR 7 ST_BY 8 P_GND 9 S_GND 10 DIAG 11 IN4 12 IN3 13 VCC2 14 OUT4 15 OUT3 clp15_pins_540san_bc Type OUTPUT Channel 1 output OUTPUT ...
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... Parameter = 25 °C unless otherwise specified. Refer also to the test circuit in Parameter Test condition - - THD = 10% THD = 10 Ω S. THD = 10 Ω BTL Ω Doc ID 18306 Rev 1 STA540SAN Value Smax 35 -40 to150 Min Typ - - 2 ...
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... STA540SAN Table 5. Electrical characteristics (continued) Symbol C Crosstalk T R Input impedance in G Voltage gain v G Voltage gain match v E Total output noise N SVR Supply voltage rejection A Standby attenuation SB I ST_BY current consumption ST_BY IN threshold voltage SB ST_BY OUT threshold V SB voltage I ST_BY pin current ...
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... C12 C13 DO7 10 µF ZD1 100 SGND SGND SGND C1 4 IN1 JP5 0.22uF C2 0.22uF IC1 5 IN2 STA540SAN 12 IN3 CLIPWATT15 C3 0.22uF JP6 C4 11 IN4 0.22uF 6 SVR C11 47 µ SGND SGND PGND VCC C6 C5 1000 µF 100 nF C7 2200 µ ...
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... STA540SAN Figure 4. Component layout Figure 5. Component side Figure 6. Solder side Doc ID 18306 Rev 1 Test and applications board 9/26 ...
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... Doc ID 18306 Rev 1 STA540SAN Purpose Standby time constant Ripple rejection Input AC coupling Voltage supply decoupling Voltage supply decoupling Output AC coupling Ripple rejection Standby time constant Ripple rejection ...
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... STA540SAN 5 Standard applications circuits Figure 7. Quad stereo 10K ST-BY IN1 0.22µF IN2 0.22µF IN3 0.22µF IN4 0.22µF 47µF Figure 8. Audio performance option The best audio performance is obtained with the configuration where each speaker has its own DC blocking capacitor. If the application allows a little degradation of the spatial image it is possible to connect a couple of speakers with only one low-value DC blocking capacitor ...
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... W into 2 Ω into 4 Ω, 14 into 4 Ω into 8 Ω Doc ID 18306 Rev 100nF 1000µ OUT L 2200µF 2 OUT R 2200µF 14 OUT BRIDGE 15 10 DIAGNOSTICS D05AU1601 Chapter 4 on page STA540SAN 8). ...
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... STA540SAN 6 Electrical characteristics curves Figure 11. Quiescent drain current vs supply voltage (single-ended and bridge) Figure 13. Output power vs supply voltage Figure 15. Output power vs supply voltage 20 20 Po(W) Po( S.E. S. Rl=4ohm Rl=4ohm 14 14 f=1KHz f=1KHz 12 12 T.H.D=10% T.H.D=10 +10 +10 +12 +12 ...
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... BTL BTL 27.5 27.5 Rl=8ohm Rl=8ohm 25 25 f=1KHz f=1KHz 22.5 22.5 T.H.D=10% T.H.D=10 17.5 17 12.5 12 7.5 7 2.5 2 +10 +10 +12 +12 +14 +14 Vs(V) Vs(V) 14/26 Figure 18. Distortion vs output power Figure 20. Crosstalk vs frequency T.H.D=1% T.H.D=1% +18 +18 +20 +20 +22 +22 +24 +24 Figure 22. Standby attenuation vs threshold T.H.D=1% T.H.D=1% +16 +16 +18 +18 +20 +20 +22 +22 Doc ID 18306 Rev 1 STA540SAN voltage ...
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... STA540SAN Figure 23. Supply voltage rejection vs frequency Figure 25. Total power dissipation and efficiency vs output power Electrical characteristics curves Figure 24. Total power dissipation and efficiency vs output power Doc ID 18306 Rev 1 15/26 ...
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... Therefore, in examples 1 and 2, the resulting average dissipated power Doc ID 18306 Rev 1 =150 °C (thermal j ) dmax ) th_j-case = 50 °C, P amb_max 2 ⋅ 2.62 10. – 150 50 = --------------------- - 2.5 – = 7°C/W 10 out ⋅ 10.5 21W – 150 50 = --------------------- - 2.5 – = 2.2°C 13.4 °C/W th_c-amb = 5.4 °C/W th_c-amb STA540SAN (°C/ out ...
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... STA540SAN Figure 26. Power derating curve Pd(W) Pd( Tamb(C) Tamb(C) Doc ID 18306 Rev 1 Thermal information 1) Infinite 1) Infinite 3.5C/W 2) 3.5C/W 3) 5C/W 3) 5C/W 4) 7C/W 4) 7C/W 100 100 120 120 140 140 160 160 ...
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... And, when done in combination with a capacitor, prevents output pop. A capacitor of at least 100 nF from pin 7 to S_GND, with no resistance in between, is necessary to ensure correct turn-on. 18/26 Doc ID 18306 Rev 1 STA540SAN ...
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... STA540SAN 8.6 Output stage The fully complementary output stage is possible with the power ICV PNP component. This novel design is based on the connection shown in exploitation of its capabilities. The clear advantages this new approach has over classical output stages are described in the following sections. ...
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... This extra function becomes particularly attractive when, in the single-ended configuration, one capacitor is shared between two outputs as shown in Figure 28. Sharing a capacitor If the output capacitor C 8.7.1 Diagnostic facilities (pin 10) The STA540SAN is equipped with diagnostic circuitry that is able to detect the following events: Clipping in the output signal Thermal shutdown Output fault: – ...
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... STA540SAN 8.7.2 Thermal shutdown With the thermal shutdown feature, the output (pin 10) signals the proximity of the junction temperature to the shutdown threshold. Typically, current sinking at pin 10 starts at approximately 10 °C before the shutdown threshold is reached. Figure 30. Output fault waveforms Figure 31. Fault waveforms ST_BY PIN ...
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... Normally, clip-detector signalling under faulty conditions produces a low level at pin 10. Based on this assumption, an interface circuitry to differentiate the information is shown in Figure 33. Figure 32. Waveforms ST_BY PIN VOLTAGE OUTPUT WAVEFORM Vpin 10 WAVEFORM Figure 33. Interface circuit diagram 22/26 Vs D05AU1604_bc 10 Doc ID 18306 Rev 1 CLIPPING SHORT TO GND THERMAL PROXIMITY STA540SAN ...
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... STA540SAN 8.9 PCB-layout grounding (general rules) The device has two distinct ground leads, P_GND (power ground) and S_GND (signal ground) which are practically disconnected from each other at chip level. Correct operation requires that P_GND and S_GND leads be connected together on the PCB layout by means of reasonably low-resistance tracks ...
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... MIN. TYP. MAX. 3.2 0.126 1.05 0.041 0.15 0.006 1.50 0.061 0.55 0.019 0.022 0.73 0.026 0.029 1.27 1.4 0.045 0.050 0.055 17.78 17.91 0.692 0.700 0.705 12 0.480 18.6 0.732 0.781 17.9 0.704 14.55 0.572 11 11.2 0.421 0.433 0.441 5.5 0.217 2.54 0.100 2.54 0.100 Doc ID 18306 Rev 1 STA540SAN OUTLINE AND MECHANICAL DATA Weight: 1.92gr Clipwatt15 0044538 G ® ...
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... STA540SAN 10 Revision history Table 7. Document revision history Date 16-Dec-2010 Revision 1 Initial release Doc ID 18306 Rev 1 Revision history Changes 25/26 ...
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... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 26/26 Please Read Carefully: © 2010 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com Doc ID 18306 Rev 1 STA540SAN ...