Philips TDA8950 - Mono BTL application characteristics

TDA8950_2 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 02 — 11 June 2009 16 of 39
NXP Semiconductors
TDA8950
2 × 150 W class-D power amplifier
[8] P
o
= 1 W; f
i
= 1 kHz.
[9] V
i
= V
i(max)
= 1 V (RMS); f
i
= 1 kHz.
[10] Leads and bond wires included.
12.3 Mono BTL application characteristics
[1] V
P
is the supply voltage on pins VDDP1, VDDP2 and VDDA.
[2] R
sL
is the series resistance of the low-pass LC filter inductor used in the application.
[3] Output power is measured indirectly; based on R
DSon
measurement; see Section 13.3.
[4] THD measured between 22 Hz and 20 kHz, using AES17 20 kHz brick wall filter; max. limit is guaranteed but may not be 100 % tested.
[5] V
ripple
= V
ripple(max)
= 2 V (p-p).
[6] 22 Hz to 20 kHz, using an AES17 20 kHz brick wall filter; low noise due to BD modulation.
[7] 22 Hz to 20 kHz, using an AES17 20 kHz brick wall filter.
[8] V
i
= V
i(max)
= 1 V (RMS); f
i
= 1 kHz.
Table 11. Dynamic characteristics
V
P
[1]
= ± 35 V; R
L
= 8 Ω ; f
i
= 1 kHz; f
osc
= 345 kHz; R
sL
[2]
< 0.1 Ω ; T
amb
= 25 ° C; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
P
o
output power T
j
=85°C; L
LC
=22µH; C
LC
= 680 nF (see
Figure 10)
[3]
THD + N = 10 %; R
L
= 8 Ω; V
P
= ±39 V - 340 - W
THD + N = 0.5 %; R
L
= 8 Ω; V
P
= ±37 V - 200 - W
THD + N = 10 %; R
L
= 8 Ω; V
P
= ±37 V - 300 - W
THD total harmonic distortion P
o
= 1 W; f
i
= 1 kHz
[4]
- 0.05 - %
P
o
= 1 W; f
i
= 6 kHz
[4]
- 0.05 - %
G
v(cl)
closed-loop voltage gain - 36 - dB
SVRR supply voltage ripple rejection between pin VDDPn and SGND
Operating mode; f
i
= 100 Hz
[5]
-80-dB
Operating mode; f
i
= 1 kHz
[5]
-80-dB
Mute mode; f
i
= 100 Hz
[5]
-95-dB
Standby mode; f
i
= 100 Hz
[5]
- 120 - dB
between pin VSSPn and SGND
Operating mode; f
i
= 100 Hz
[5]
-75-dB
Operating mode; f
i
= 1 kHz
[5]
-75-dB
Mute mode; f
i
= 100 Hz
[5]
-90-dB
Standby mode; f
i
= 100 Hz
[5]
- 130 - dB
Z
i
input impedance measured between one of the input pins and
SGND
45 63 - kΩ
V
n(o)
output noise voltage Operating mode; R
s
=0Ω
[6]
- 190 - µV
Mute mode
[7]
-45-µV
α
mute
mute attenuation f
i
= 1 kHz; V
i
= 2 V (RMS)
[8]
-75-dB
CMRR common mode rejection ratio V
i(CM)
= 1 V (RMS) - 75 - dB