TDA8932B_15 Datasheet, PDF (21/48 Pages) NXP Semiconductors – Class-D audio amplifier

NXP Semiconductors
TDA8932B
Class-D audio amplifier
Table 13. BTL characteristics …continued
V_P = 22 V; R_L = 8 Ω; f_i = 1 kHz; f_osc = 320 kHz; R_s < 0.1 Ω^[1]; T_amb = 25 °C; unless otherwise specified.
Symbol Parameter
Conditions
Min Typ
V_n(o)
output noise voltage
R_s = 0 Ω
Operating mode
[4] _-
100
Mute mode
[4] _-
70
V_O(mute) mute output voltage
CMRR
η_po
common mode rejection ratio
output power efficiency
P_o(RMS) RMS output power
Mute mode; V_i = 1 V (RMS) and
f_i = 1 kHz
-
100
V_i(cm) = 1 V (RMS)
-
75
P_o = 15 W; V_P = 12 V and R_L = 4 Ω
88
90
P_o = 30 W; V_P = 22 V and R_L = 8 Ω
90
92
continuous time output power
[5]
R_L = 4 Ω; V_P = 12 V
THD+N = 0.5 %; f_i = 1 kHz
11.8 13.2
THD+N = 0.5 %; f_i = 100 Hz
-
13.2
THD+N = 10 %; f_i = 1 kHz
15.5 17.2
THD+N = 10 %; f_i = 100 Hz
-
17.2
R_L = 8 Ω; V_P = 22 V
THD+N = 0.5 %; f_i = 1 kHz
23.1 25.7
THD+N = 0.5 %; f_i = 100 Hz
-
25.7
THD+N = 10 %; f_i = 1 kHz
28.9 32.1
THD+N = 10 %; f_i = 100 Hz
short time output power
-
[5]
32.1
R_L = 4 Ω; V_P = 15 V
THD+N = 0.5 %
18.5 20.6
THD+N = 10 %
23.9 26.6
R_L = 8 Ω; V_P = 29 V
THD+N = 0.5 %
36.0 40.0
THD+N = 10 %
49.5 55.0
Max
150
100
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[1] R_s is the series resistance of inductor and capacitor of low-pass LC filter in the application.
[2] THD+N is measured in a bandwidth of 20 Hz to 20 kHz, AES17 brick wall.
[3] Maximum V_ripple = 2 V (p-p); R_s = 0 Ω.
[4] B = 20 Hz to 20 kHz, AES17 brick wall.
[5] Output power is measured indirectly; based on R_DSon measurement.
Two layer application board (55 mm × 45 mm), 35 µm copper, FR4 base material in free air with natural convection.
Unit
µV
µV
µV
dB
%
%
W
W
W
W
W
W
W
W
W
W
W
W
TDA8932B_4
Product data sheet
Rev. 04 — 18 December 2008
© NXP B.V. 2008. All rights reserved.
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