TDA8933 Datasheet, PDF (22/47 Pages) NXP Semiconductors – Class-D audio amplifier

NXP Semiconductors
TDA8933
Class-D audio amplifier
Table 12. SE characteristics …continued
V_P = 25 V, R_L = 2 × 8 Ω, f_i = 1 kHz, f_osc = 320 kHz, R_S < 0.1 Ω ^[6] and T_amb = 25 °C; unless otherwise specified.
Symbol Parameter
Conditions
Min
Typ
Max
V_n(o)
noise output voltage
Operating mode; R_s = 0 Ω
Mute mode
[5]
-
[5]
-
100
150
70
100
V_O(mute)
CMRR
mute output voltage
common mode rejection
ratio
Mute mode; V_i = 1 V (RMS)
and f_i = 1 kHz
V_i(cm) = 1 V (RMS)
-
100
-
-
75
-
η_po
output power efficiency
P_o = 10 W
V_P = 17 V; R_L = 4 Ω
V_P = 25 V; R_L = 8 Ω
86
87
-
89
90
-
[1] Output power is measured indirectly; based on R_DSon measurement.
[2] 2 layer application board (55 mm × 45 mm), 35 µm copper, FR4 base material in free air with natural convection.
[3] THD+N is measured in a bandwidth of 20 Hz to 20 kHz, AES17 brick wall.
[4] Maximum V_ripple = 2 V (p-p); R_S = 0 Ω.
[5] B = 20 Hz to 20 kHz, AES17 brick wall.
[6] R_S is the series resistance of inductor and capacitor of low-pass LC filter in the application.
Table 13. BTL characteristics
V_P = 25 V, R_L = 16 Ω, f_i = 1 kHz, f_osc = 320 kHz, R_S < 0.1 Ω ^[5] and T_amb = 25 °C; unless otherwise specified.
Symbol Parameter
Conditions
Min
Typ
Max
P_o(RMS)
RMS output power
continuous time output power: ^[1]
THD+N = 10 %; f_i = 1 kHz
R_L = 8 Ω; V_P = 17 V
THD+N = 0.5 %, f_i = 1 kHz
11.9
13.2
-
THD+N = 0.5 %, f_i = 100 Hz
-
13.2
-
THD+N = 10 %, f_i = 1 kHz
15.4
17.1
-
THD+N = 10 %, f_i = 100 Hz
R_L = 16 Ω; V_P = 25 V
THD+N = 0.5 %, f_i = 1 kHz
-
17.1
-
14.9
16.5
-
THD+N = 0.5 %, f_i = 100 Hz
THD+N = 10 %, f_i = 1 kHz
-
16.5
-
18.9
21
-
THD+N = 10 %, f_i = 100 Hz
-
short time output power; THD+N ^[2]
= 10 %, see Figure 35 for details
21
-
R_L = 16 Ω; V_P = 31 V
THD+N = 0.5 %
22.8
25.3
-
THD+N = 10 %
28.8
32
-
THD+N
total harmonic
distortion-plus-noise
P_o = 1 W
f_i = 1 kHz
[3]
-
0.04
0.1
f_i = 10 kHz
-
0.18
0.24
G_v(cl)
|Z_i|
closed-loop voltage gain
input impedance
differential
35
36
37
35
50
-
Unit
µV
µV
µV
dB
%
%
Unit
W
W
W
W
W
W
W
W
W
W
%
%
dB
kΩ
TDA8933_1
Preliminary data sheet
Rev. 01 — 15 May 2007
© NXP B.V. 2007. All rights reserved.
22 of 47