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Ordering number: EN 5703
±
θ
°
°
°
−
°
Thick Film Hybrid IC
STK400-030
AF Power Amplifier (Split Power Supply)
(20W+20W+20W, THD = 0.4%)
Overview
The STK400-030 is a 3-channel AF power amplifier IC
supporting multichannel speakers. One package includes
20W × 3ch for Lch, Rch and Cch. It is pin compatible with
both 3-channel output devices (STK400-*00 series) and 2channel output devices (STK401-*00 series). The output
load impedance is 6/3 Ω .
Features
• New series combining 3-channel output devices
(STK400-*00 series) and 2-channel output devices
(STK401-*00 series) with the same pin compatibility.
• Output load impedance is 6/3 Ω .
• Pin assignment is grouped into individual blocks of
inputs, outputs and supply lines, minimizing the adverse
effects of pattern layout on operating characteristics.
• Minimum number of external components required.
Package Dimensions
unit: mm
4086A
[STK400-030]
Specified Transformer Power Supply
(RP-25 or Equivalent)
Specifications
Maximum Ratings
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
Thermal resistance
Junction temperature Tj 150
Operating substrate temperature Tc 125
Storage temperature Tstg
Available time for load short-circuit t
Operating Characteristics
Parameter Symbol Conditions min typ max Unit
Output power
Total harmonic distortion
at Ta = 25 ° C
at Ta = 25 ° C, R
max
CC
j-c Per power transistor 2.1
30 to +125
V
s
P
(1)
O
P
(2)
O
THD(1)
THD(2)
= ± 23V, R
CC
f = 50Hz, P
= 6 Ω (noninductive load), Rg = 600 Ω , VG = 40dB
L
= ± 23V, f = 20Hz to
V
CC
20kHz, THD = 0.4%
= ± 19V, f = 1kHz,
V
CC
THD = 1.0%, R
V
= ± 23V, f = 20Hz to
CC
20kHz, P
= ± 23V, f = 1kHz,
V
CC
P
= 5.0W
O
= 20W
O
= 1.0W
O
= 6 Ω ,
L
= 3 Ω
L
20 25 – W
20 25 – W
– – 0.4 %
– 0.02 – %
34 V
C/W
C
C
C
1s
SANYO Electric Co., Ltd. Semiconductor Business Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
N0697HA (ID) No. 5703—1/6
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Ω
−
STK400-030
Parameter Symbol Conditions min typ max Unit
+0
Frequency response f
Input impedance r
Output noise voltage V
Quiescent current I
Neutral voltage V
, f
L
i
NO
CCO
N
V
H
= ± 23V, P
CC
V
= ± 23V, f = 1kHz,
CC
= 1.0W
P
O
V
= ± 28V, Rg = 10k Ω
CC
V
= ± 28V 30 90 150 mA
CC
V
= ± 28V
CC
= 1.0W, – 20 to 50k – Hz
O
dB
−
3
–55–k
– – 1.2 mVrms
70 0 +70 mV
Notes.
All tests are conducted using a constant-voltage regulated power supply unless otherwise specified.
Available time for load shorted and output noise voltage are measured using the transformer power supply specified on page 1.
The output noise voltage is the peak value of an av er age-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.
Equivalent Circuit
Sample Application Circuit
No. 5703—2/6
Page 3
2
×
×
×
STK400-030
Series Configuration
The products are serialized according to the number of channels, the output capacity, and the distortion ratio. These
include the products under development: for details, please contact your Sanyo sales representative.
×
±
STK400-000, STK400-200 series
(3-channel equal output)
Type No.
STK400-010
THD
[%]
Type No.
STK400-210
THD
Rated
[%]
output
10W × 3 STK401-010
STK400-020 STK400-220 15W
3 STK401-020 STK401-220 15W × 2– ± 29.0 ± 20.0 ± 16.0
STK401-000, STK401-200 series (2-channel) Supply voltage [V]
V
Type No.
THD
[%]
Type No.
STK401-210
THD
[%]
Rated
output
V
CC
max1
10W × 2– ± 26.0 ± 17.5 ± 14.0
CC
max2
V
1V
CC
CC
STK400-030 STK400-230 20W × 3 STK401-030 STK401-230 20W × 2– ± 34.0 ± 23.0 ± 19.0
STK400-040 STK400-240 25W × 3 STK401-040 STK401-240 25W × 2– ± 36.0 ± 25.0 ± 21.0
STK400-050 STK400-250 30W
STK400-060 STK400-260 35W
STK400-070 STK400-270 40W × 3 STK401-070 STK401-270 40W × 2– ± 44.0 ± 30.0 ± 24.0
STK400-080 STK400-280 45W × 3 STK401-080 STK401-280 45W × 2– ± 45.0 ± 31.0 ± 25.0
0.4
0.08
STK400-090 STK400-290 50W
3 STK401-050 STK401-250 30W × 2– ± 39.0 ± 26.0 ± 22.0
3 STK401-060 STK401-260 35W × 2– ± 41.0 ± 28.0 ± 23.0
0.4
0.08
3 STK401-090 STK401-290 50W × 2– ± 47.0 ± 32.0 ± 26.0
STK400-100 STK400-300 60W × 3 STK401-100 STK401-300 60W × 2– ± 51.0 ± 35.0 ± 27.0
STK400-110 STK400-310 70W × 3 STK401-110 STK401-310 70W × 2 ± 56.0 –
– – – STK401-120 STK401-320 80W × 2
±
61.0 –
– – – STK401-130 STK401-330 100W × 2±65.0 –
– – – STK401-140 STK401-340 120W × 2±74.0 –
38.0 –
±
42.0 –
±
45.0 –
±
51.0 –
STK400-400, STK400-600 series (3-channel different output) Supply voltage [V]
Type No.
STK400-450
THD
[%]
Type No.
STK400-650
STK400-460 STK400-660
STK400-470 STK400-670
STK400-480 STK400-680
STK400-490 STK400-690
0.4
STK400-500 STK400-700
STK400-510 STK400-710
STK400-520 STK400-720
STK400-530 STK400-730
THD
[%]
Rated output
Cch 30W –
L, Rch 15W –
Cch 35W –
L, Rch 15W –
Cch 40W –
L, Rch 20W –
Cch 45W –
L, Rch 20W –
0.08
Cch 50W –
L, Rch 25W –
Cch 60W –
L, Rch 30W –
Cch 70W±56.0 –
L, Rch 35W –
Cch 80W±61.0 –
L, Rch 40W –
Cch 100W±65.0 –
L, Rch 50W –
V
CC
max1
VCC
max2
±
39.0±26.0±22.0
±
29.0±20.0±16.0
±
41.0±28.0±23.0
±
29.0±20.0±16.0
±
44.0±30.0±24.0
±
34.0±23.0±19.0
±
45.0±31.0±25.0
±
34.0±23.0±19.0
±
47.0±32.0±26.0
±
36.0±25.0±21.0
±
51.0±35.0±27.0
±
39.0±26.0±22.0
±
41.0±28.0±23.0
±
44.0±30.0±24.0
±
47.0±32.0±26.0
1V
V
CC
±
38.0 –
±
42.0 –
±
45.0 –
CC
2
V
max1 (R
CC
= 6 Ω ), V
L
max2 (R
CC
= 3 to 6 Ω ), V
L
CC
1 (R
= 6 Ω ), V
L
CC
2 (R
= 3 Ω )
L
No. 5703—3/6
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STK400-030
Heatsink Design Considerations
The heatsink thermal resistance, θc-a, required to cover
the hybrid IC’s total power dissipation, Pd, is determined
as follows:
Condition 1: Hybrid IC’s substrate temperature not to
exceed 125°C.
Pd × θc-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 × θc-a + Pd/N × θj-c + Ta < 150°C................. (2)
where N is the number of power transistors and θj-c is the
thermal resistance per power transistor. Note that the
power dissipated per transistor is the total, Pd, divided
evenly among the N power transistors.
Expressions (1) and (2) can be rewritten making θc-a the
subject.
θc-a < (125 − T a)/Pd............................................. (1)′
θc-a < (150 − T a)/Pd − θj-c/N .............................. (2)′
The heatsink required must have a thermal resistance that
simultaneously satisfies both expressions.
The heatsink thermal resistance can be determined from
(1)′ and (2)′ once the following parameters have been
defined.
• Supply voltage : V
• Load resistance : R
• Guaranteed maximum ambient temperature : Ta
CC
L
The total device power dissipation when hybrid IC’s V
CC
= ±23V and RL = 6Ω, for a continuous sine wave signal, is
a maximum of 55W, as is in Pd-PO graph.
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,
Pd = 31W (for 1/10 PO max = 2W)
The hybrid IC has 6 power transistors, and the thermal
resistance per transistor, θj-c, is 2.1°C/W. If the guaranteed maximum ambient temperature, Ta, is 50°C, then the
required heatsink thermal resistance, θc-a, is:
From expression (1)′: θc-a < (125 − 50)/31
< 2.41
From expression (2)′: θc-a < (150 − 50)/31 − 2.1/6
< 2.87
Therefore, to satisfy both expressions, the required heatsink must have a thermal resistance less than 2.41°C/W.
Similarly, when hybrid IC’s VCC = ±19V and RL = 3Ω:
Pd = 36W (for 1/10 PO max = 2W)
From expression (1)′: θc-a < (125 − 50)/36
< 2.08
From expression (2)′: θc-a < (150 − 50)/36 − 2.1/6
< 2.42
Therefore, to satisfy both expressions, the required heatsink must have a thermal resistance less than 2.08°C/W.
This heatsink design example is based on a constant-voltage egulated power supply, and should be verified within
your specific set environment.
3-ch drive, total device power dissipation, Pd - W
Output power per channel, PO /ch - W
3-ch drive, total device power dissipation, Pd - W
Output power per channel, PO /ch - W
No. 5703—4/6
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STK400-030
Total harmonic distortion, THD - %Output power, P
- WOutput power, P
Total harmonic distortion, THD - %Output power, P
Output power, PO - W
- WOpen-Loop Gain, VG - dB
O
O
Input voltage, Vin - mVrms
Output power, PO - W
Frequency, f - Hz
- W
O
Supply voltage, V
CC
- V
Frequency, f - Hz
No. 5703—5/6
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STK400-030
Neutral voltage, V
N
- mV
- mA
CCO
Closed-Loop Gain, VG - dBQuiescent current, I
- mA
CCO
Frequency, f - Hz
Supply voltage, V
CC
- V
Quiescent current, I
- mV
N
Neutral voltage, V
Operating substrate temperature, Tc - °C
■
No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear
power control systems, vehicles, disaster/crime-pre v ention equipment and the lik e, the failure of which may directly or indirectly cause injury,
death or property loss.
■
Anyone purchasing any products described or contained herein for an above-mentioned use shall:
➀
Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their
officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated
with such use:
➁
Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO.,
LTD., its affiliates, subsidiaries and distributors or any of their officers and employees, jointly or severally.
■
Information (including circuit diagrams and circuit parameters) herein is for e xample 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 November, 1997. Specifications and information herein are subject to change without notice.
No. 5703—6/6
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