SA58637_15 Datasheet, PDF (8/22 Pages) NXP Semiconductors – 2 x 2.2 W BTL audio amplifier

NXP Semiconductors
SA58637
2 × 2.2 W BTL audio amplifier
13. Application information
13.1 BTL application
T_amb = 25 °C, V_CC = 9 V, f = 1 kHz, R_L = 8 Ω, G_v = 20 dB, audio band-pass 22 Hz to
22 kHz. The single-ended input and BTL differential output diagram is shown in Figure 3.
1 µF _R1
10 kΩ
VI
R2
50 kΩ
INL− ₁₅ 17
INL+ ₁₄
C3
47 µF
10
16 ^OUTL−
1 ^OUTL+
100 nF
V_CC
100 µF
RL
1 µF _R3
SA58637
INR− ₁₂
10 kΩ
VI
R4
INR+ ₁₃
50 kΩ
SVR ₃
11 ^OUTR−
RL
MODE ₂
6 ^OUTR+
SELECT ₄
20
7
GND
001aah746
Gain left = 2 × -^RR----²¹-
Fig 3.
Gain right = 2 × -^RR----⁴³-
Pins 8, 9, 18 and 19 connected to ground.
Application diagram of SA58637 single-ended input and BTL differential output
configuration
SA58637_1
Product data sheet
Rev. 01 — 25 February 2008
© NXP B.V. 2008. All rights reserved.
8 of 22