SA58632 Datasheet, PDF (19/26 Pages) NXP Semiconductors – 2 x 2.2 W BTL audio amplifier

Philips Semiconductors
SA58632
2 × 2.2 W BTL audio amplifier
3
P
(W)
2
1
002aac293
(3)
(2)
(1)
3
P
(W)
(3)
2
(2)
1
(1)
002aac294
0
0
0.4
0.8
1.2
1.6
P_o (W)
(1) V_CC = 7.5 V.
(2) V_CC = 9 V.
(3) V_CC = 12 V.
a. R_L = 4 Ω; f = 1 kHz; G_v = 10 dB
1.6
P
(W)
(3)
1.2
(2)
0.8
(1)
0
0
0.8
1.6
2.4
P_o (W)
(1) V_CC = 9 V.
(2) V_CC = 12 V.
(3) V_CC = 15 V.
b. R_L = 8 Ω; f = 1 kHz; G_v = 10 dB
002aac295
0.4
0
0
0.4
0.8
1.2
1.6
P_o (W)
(1) V_CC = 9 V.
(2) V_CC = 12 V.
(3) V_CC = 15 V.
c. R_L = 16 Ω; f = 1 kHz; G_v = 10 dB
Fig 22. Power dissipation versus output power
14.5 General remarks
The frequency characteristics can be adapted by connecting a small capacitor across the
feedback resistor. To improve the immunity of HF radiation in radio circuit applications, a
small capacitor can be connected in parallel with the feedback resistor (56 kΩ); this
creates a low-pass filter.
14.6 SA58632BS PCB demo
The application demo board may be used for evaluation in either BTL or SE configuration
as shown in the schematics in Figure 3 and Figure 15. The demo PCB is laid out for a
64.5 mm² (10 in²) heat spreader (total of top and bottom heat spreader area).
SA58632_1
Product data sheet
Rev. 01 — 27 June 2006
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
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