TDA8922 Datasheet, PDF (14/36 Pages) NXP Semiconductors – 2 x 25 W class-D power amplifier

Philips Semiconductors
2 × 25 W class-D power amplifier
Objective specification
TDA8922
14 DYNAMIC AC CHARACTERISTICS (STEREO AND DUAL SE APPLICATION)
V_P = ±20 V; R_L = 8 Ω; f_i = 1 kHz; f_osc = 310 kHz; R_sL < 0.1 Ω (note 1); T_amb = 25 °C; measured in Fig.10; unless
otherwise specified.
SYMBOL
PARAMETER
P_o
output power
THD
total harmonic distortion
G_v(cl)
η
SVRR
closed loop voltage gain
efficiency
supply voltage ripple rejection
Z_i
V_n(o)
input impedance
noise output voltage
α_cs
∆G_v
V_o(mute)
CMRR
channel separation
channel unbalance
output signal in mute
common mode rejection ratio
CONDITIONS
R_L = 8 Ω; V_P = ±20 V; note 2
THD = 0.5%
THD = 10%
R_L = 8 Ω; V_P = ±25 V; note 2
THD = 0.5%
THD = 10%
R_L = 4 Ω; V_P = ±15 V; note 2
THD = 0.5%
THD = 10%
P_o = 1 W; note 3
f_i = 1 kHz
f_i = 10 kHz
P_o = 25 W; f_i = 1 kHz; note 4
operating; note 5
f_i = 100 Hz
f_i = 1 kHz
mute; f_i = 100 Hz; note 5
standby; f_i = 100 Hz; note 5
operating
R_s = 0 Ω; note 6
R_s = 10 kΩ; note 7
mute; note 8
note 9
note 10
V_i(CM) = 1 V (RMS)
MIN. TYP. MAX. UNIT
18
20
−
W
22
25
−
W
29
33
−
W
36
40
−
W
18
20
−
W
22
25
−
W
−
0.02 0.05 %
−
0.15 −
%
29
30
31
dB
85
90
−
%
−
55
−
dB
40
50
−
dB
−
55
−
dB
−
80
−
dB
45
68
−
kΩ
−
200 400 µV
−
230 −
µV
−
220 −
µV
−
70
−
dB
−
−
1
dB
−
−
400 µV
−
75
−
dB
Notes
1. R_sL is the series resistance of inductor of low-pass LC filter in the application.
2. Output power is measured indirectly; based on R_DSon measurement.
3. Total harmonic distortion is measured in a bandwidth of 22 Hz to 22 kHz. When distortion is measured using a lower
order low-pass filter a significantly higher value is found, due to the switching frequency outside the audio band.
Maximum limit is guaranteed but may not be 100% tested.
4. Output power measured across the loudspeaker load.
5. V_ripple = V_ripple(max) = 2 V (p-p); R_s = 0 Ω.
6. B = 22 Hz to 22 kHz; R_s = 0 Ω; maximum limit is guaranteed, but may not be 100% tested.
7. B = 22 Hz to 22 kHz; R_s = 10 kΩ.
2003 Mar 20
14