TDA8932B_15 Datasheet, PDF (12/48 Pages) NXP Semiconductors – Class-D audio amplifier

NXP Semiconductors
TDA8932B
Class-D audio amplifier
• Pins HVP1 and HVP2: The time required for charging the SE capacitor depends on its
value. The half supply voltage output is disabled when the TDA8932B is used in a
symmetrical supply application.
• Pin HVPREF: This output voltage reference buffer charges the capacitor on pin
HVPREF.
• Pin INREF: This output voltage reference buffer charges the input reference capacitor
on pin INREF. Pin INREF applies the bias voltage for the inputs.
9. Internal circuitry
Table 7.
Pin
1
16
17
32
Internal circuitry
Symbol
Equivalent circuit
V_SSD(HW)
V_SSD(HW)
V_SSD(HW)
V_SSD(HW)
1, 16,
17, 32
V_DDA
V_SSA
001aad784
2
IN1P
3
IN1N
12
INREF
2, 15
14
IN2N
15
IN2P
V_DDA
2 kΩ
± 20 %
V/I
48 kΩ
± 20 %
12
3, 14
2 kΩ
± 20 %
48 kΩ
± 20 %
HVPREF
V/I
4
DIAG
V_SSA
V_DDA
4
2.5 V
50 µA
500 Ω
± 20 %
100 kΩ
± 20 %
001aad785
V_SSA
CGND
001aaf607
TDA8932B_4
Product data sheet
Rev. 04 — 18 December 2008
© NXP B.V. 2008. All rights reserved.
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