SA58632BS 데이터 시트보기 (PDF) - Philips Electronics

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SA58632BS

2 × 2.2 W BTL audio amplifier

Philips Electronics 

Philips Semiconductors

SA58632

2 × 2.2 W BTL audio amplifier

14.4 Single-ended application

Tamb = 25 °C; VCC = 7.5 V; f = 1 kHz; RL = 8 Ω; Gv = 20 dB; audio band-pass 20 Hz to

20 kHz.

The single-ended application diagram is shown in Figure 15.

1 µF R1

10 kΩ

R2

100 kΩ

VIL

C3

47 µF

INL− 15 17

INL+ 14

VCC

100 nF

100 µF

10

16 OUTL−

C4

470 µF

RL = 8 Ω

1 µF R3

10 kΩ

VIR

OUTR−

R4

100 kΩ

INR− 12

INR+ 13

SVR 3

MODE 2

BTL/SE 4

SA58632

20 7

OUTL+

1

11 OUTR−

6 OUTR+

C5

470 µF

RL = 8 Ω

GND

002aac091

Gain left = -RR----21-

Gain right = -RR----43-

Pins 8, 9, 18 and 19 connected to ground.

Fig 15. SE application circuit configuration

If the BTL/SE pin is to ground, the positive outputs (OUTL+, OUTR+) will be in mute

condition with a DC level of 0.5VCC. When a headphone is used (RL > 25 Ω) the SE

headphone application can be used without coupling capacitors by placing the load

between negative output and one of the positive outputs (for example, pin 1) as the

common pin.

Increasing the value of the tantalum or electrolytic capacitor C3 will result in a better

channel separation. Because the positive output is not designed for high output current

(2 × IO) at the load impedance (< 16 Ω), the SE application with output capacitors

connected to ground is advised. The capacitor value of C4/C5 in combination with the

load impedance determines the low frequency behavior. The total harmonic

distortion-plus-noise as a function of frequency was measured with a low-pass filter of

80 kHz. The value of the capacitor C3 influences the behavior of the PSRR at low

frequencies; increasing the value of C3 increases the performance of PSRR.

SA58632_1

Product data sheet

Rev. 01 — 27 June 2006

© Koninklijke Philips Electronics N.V. 2006. All rights reserved.

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