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Ordering number:ENN5060

Thick Film Hybrid IC

STK401-100
2ch AF Power Amplifier (Split Power Supply) (60W + 60W min, THD = 0.4%)
Overview
The STK401-100 is a thick-film audio power amplifier IC belonging to a series in which all devices are pin compatible. This allows a single PCB design to be used to construct amplifiers of various output capacity simpaly by changing hybrid ICs. Also, this series is part of a new, larger series that comprises mutually similar devices with the same pin compatibility. This makes possible the development of a 2-channel amplifier from a 3-channel amplifier using the same PCB. In addition, this new series features 6/3 drive in order to support the low impedance of modern speakers.

Package Dimensions
unit:mm 4029
[STK401-100]
78.0 70.0 9.0

3.6 21.5

44.0

Features
· Pin compatible STK400-000 series (3-channel/single package) STK401-000 series (2-channel/single package) · Output load impedance RL=6/3 supported · New pin assignment Pin configuration has been grouped into individual blocks of inputs, outputs and supply lines, minimizing the adverse effects of pattern layout on operating characteristics. · Few external components In comparison with exisiting series, external bootstrap resistors and capacitors can be eliminated.

1 2.54 0.5 15×2.54=38.1

16 2.9 0.4 5.5 4.0

(15.95)

SANYO : SIP16

Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other parameters) listed in products specifications of any and all SANYO products described or contained herein.

SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
93099TH (KT)/60195HA (ID) No.5060­1/9

26.5

STK401-100 Specifications
Maximum Ratings at Ta = 25°C
Parameter Maximum supply voltage Thermal resistance Junction temperature Operating substrate temperature Storage temperature Available time for load short-circuit Symbol VCC max j-c Tj Tc Tstg ts VCC=±35V, RL=6, f=50Hz, PO=60W Per power transistor Conditions Ratings ±51 1.4 150 125 ­30 to +125 1 Unit V

°C/W °C °C °C
s

Operating Characteristics at Ta = 25°C, RL=6 (noninductive load), Rg=600, VG=40dB
Parameter Quiescent current Output power PO2 Total harmonic distortion Frequency response Input impedance Output noise voltage Neutral voltage THD1 THD2 fL, fH ri VNO VN Symbol ICCO PO1 VCC=±42V VCC=±35V, f=20Hz to 20kHz, THD=0.4% VCC=±27V, f=1kHz, THD=1.0%, RL=3 VCC=±35V, f=20Hz to 20kHz, PO=1.0W VCC=±35V, f=1kHz, PO=20W VCC=±35V, PO=1.0W, +0 dB ­3 VCC=±35V, f=1kHz, PO=1.0W VCC=±42V, Rg=10k VCC=±42V ­70 Conditions Ratings min 20 60 60 typ 60 65 65 0.4 0.02 20 to 50k 55 0 +70 max 100 Unit mA W W % % Hz k 1.2 mVrms mV

Note. All tests are made using a constant-voltage supply unless otherwise specified. Available time for load short-circuit and output noise voltage are measured using the transformer supply specified below. The output noise voltage is the peak value of an average-reading meter with an rms value scale (VTVM). A regulated AC supply (50Hz) should be used to eliminate the effects of AC primary line flicker noise. Specified Transformer Supply (MG-250 or Equivalent)

No.5060­2/9

STK401-100
Equivalent Circuit

Sample PCB Layout for 2-Channel or 3-Channel Amplifiers

Copper (Cu) foil surface Pin 6 of STK400-000 series devices corresponds to pin 1 of STK401-000 series devices.

No.5060­3/9

STK401-100
Sample Application Circuit

External Component Descriptions
C1, C11 Input coupling capacitors. For DC blocking. Since capacitor reactance becomes larger at lower frequencies, the output noise can be adversely affected by signal source resistance-dependent 1/f noise. In this case, a lower rectance value should be chosen. In order to remove pop noise at power-on, larger values of capacitance should be chosen for C1 and C11, which determin the input time constant, and smaller values for C3 and C13 in the NF circuit. Input filter capacitors. These, together with R1 and R11, form filters to reduce high-frequency noise. NF capacitors. These determine the low-side cutoff frequency. C3, C13

C2, C12

fL=

1 2 × C3 (C13) × R3 (R13)

Large values should be chosen for C3 and C13 to maintain voltage gain at low frequencies. However, because this would tend to increase the shock noise at power-on, values larger than absolutely necessary should be avoided. C4, C14 C5, C15 Oscillation prevention capacitors. These increase stability against oscillation at large output signals and high temperature. Oscillation prevention capacitors. Mylar capacitors are recommended for their excellent thermal and frequency characteristics. Oscillation prevention capacitors. These should be inserted as close as possible to the IC supply pins to reduce supply impedance and hence provide stable IC operation. Electolytic capacitors are recommended. Decoupling capacitors. These, together with R8 and R9, form time constant circuits that remove shock noise and ripple voltage from the supply, preventing any noise being coupled to the inputs. Input filter resistors. Input bias resistors. These are used to bias the input pins at aero potential. The input impedance is largely determined by this resistance. Voltage-gain VG setting resistors. VG=40dB is recommended using R3, R13=560, and R4, R14=56k. Gain adjustments are best made using R3 and R13. If gain adjustments are made using R4 and R14, then set R2, R12=R4, R14 to maintain VN balance stability. Oscillation prevention resistors. Oscillation prevention resistors. The power dissipated in these resistors is dependent on the frequency, as given below. R6, R16

C6, C7

C8, C9 R1, R11 R2, R12 R3, R13 R4, R14 R5, R15

P R6 (R16)=

VCC max / 2 × R6 (R16) 1/2f × C5 (C15) × R6 (R16)

2

where f is the output signal frequency upper limit. R7, R17 Output resistors. These increase the load short-circuit withstand capacity under large output signals. Ripple filter resistors. PO max, ripple rejection and supply power-on shock noise are all affected by this resistance. These resistors should be chosen taking into consideration both the function they perform as predriver transistor limiting resistors during load short circuits and the peak current that flows through them whien charging C8 and C9 Oscillation prevention coils. These correct the phase difference caused by capacitive loads and increase stability against oscillation.

R8, R9

L1, L2

No.5060­4/9

STK401-100
Series Configuration
3-channel amplifier Type Nos. STK400-010 STK400-020 STK400-030 STK400-040 STK400-050 STK400-060 STK400-070 STK400-080 STK400-090 STK400-100 STK400-110 ­ ­ ­ Rated output 10W × 3 15W × 3 20W × 3 25W × 3 30W × 3 35W × 3 40W × 3 45W × 3 50W × 3 60W × 3 70W × 3 ­ ­ ­ 3-channel amplifier Type Nos. STK401-010 STK401-020 STK401-030 STK401-040 STK401-050 STK401-060 STK401-070 STK401-080 STK401-090 STK401-100 STK401-110 STK401-120 STK401-130 STK401-140 Rated output 10W × 2 15W × 2 20W × 2 25W × 2 30W × 2 35W × 2 40W × 2 45W × 2 50W × 2 60W × 2 70W × 2 80W × 2 100W × 2 120W × 2 0.4 THD [%] f=20Hz to 20kHz Supply voltage [V]1 VCC max1 ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ±56.0 ±61.0 ±65.0 ±74.0 VCC max2 ±26 ±29 ±34 ±36 ±39 ±41 ±44 ±45 ±47 ±51 ­ ­ ­ ­ VCC1 ±17.5 ±20 ±23 ±25 ±26 ±28 ±30 ±31 ±32 ±35 ±3 8 ±4 2 ±45 ±5 1 VCC2 ±14 ±16 ±19 ±21 ±22 ±23 ±24 ±25 ±26 ±27 ­ ­ ­ ­

1. VCC max1 (RL=6), VCC max2 (RL=3 to 6), VCC1 (RL=6), VCC2 (RL=3)

Sample Designs using a Common PCB

No.5060­5/9

STK401-100
External Circuit Diagram

Heatsink Design Considerations The heatsink thermal resistance, c-a, required to dissipate the STK401-100 device total power dissipation, Pd, is determined as follows : Condition 1: IC substrate temperature not to exceed 125°C Pd×c-a+Ta<125°C ............................................ (1) where Ta is the guaranteed maximum ambient temperature. Condition 2: Power transistor junction temperature, Tj, not to exceed 150°C Pd×c-a+Pd/N×j-c+Ta<150°C ......................... (2) where N is the number of power transistors and j-c is the power transistor thermal resistance per transistor. Note that the power dissipated per transistor is the total, Pd, devided evenly among the N power transistors. Expressions (1) and (2) can be rewritten making c-a the subject. c-a< (125­Ta)/Pd ............................................ (1)' c-a< (150­Ta)/Pd­j-c/N ................................ (2)' The heatsink required must have a thermal resistance that simultaneously satisfied both expressions. The heatsink thermal resistance can be determined from (1)' and (2)' once the following parameters have been defined.

· Supply voltage : VCC · Load resistance : RL · Guaranteed maximum ambient temperature The total device power dissipation when STK401-100 VCC=±35V and RL=6, for a continuous sine wave signal, is a maximum of 84W, as shown in the Figure 1. When estimating the power dissipation for an actual audio signal input, the rule of thumb is to select Pd corresponding to 1/10 PO max (within safe limits) for a continuous sine wave input. For example, from Figure 1, Pd=52.2W (for 1/10 PO max=6W) The STK401-100 has 4 power transistors, and the thermal resistance per transistor, j-c, is 1.4°C/W. If the graranteed maximum ambient temperature, Ta, is 50°C, then the required heatsink thermal resistance, c-a, is : From expression (1)' : c-a < (125­50)/52.2 < 1.43 From expression (2)' : c-a < (150­50)/52.2­1.4/4 < 1.56 Therefore, to satisfy both expressions, the required heatsink must have a thermal resistance less than 1.43°C/W. Similarly, when STK401-100 VCC=±27V and RL=3, from Figure 2 : Pd=56.5W (for 1/10 PO max=6W)
No.5060­6/9

STK401-100
From expression (1)' : c-a < (125­50)/56.5 < 1.32 From expression (2)' : c-a < (150­50)/56.5­1.4/4 < 1.41 Therefore, to satisfy both expressions, the required heatsink must have a thermal resistance less than 1.32C/W. The heatsink design example is based on a constant-voltage supply, and should be verified within your specific set environment.

No.5060­7/9

STK401-100

No.5060­8/9

STK401-100

Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO products(including technical data,services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be expor ted without obtaining the expor t license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of SANYO Electric Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only ; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of September, 1999. Specifications and information herein are subject to change without notice.
PS No.5060­9/9