TFA9879 NXP Semiconductors, TFA9879 Datasheet - Page 40

• Manufacturer Part Number: TFA9879
• Description: The TFA9879 contains a processor that supports a range of sound processing featuresincluding a 5-band parametric equalizer, separate bass and treble control, a dynamicrange compressor, soft clip control and volume control
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 38.
All parameters are guaranteed for V
T
TFA9879
Product data sheet
Symbol
Class D amplifier
P
η
THD+N
V
S/N
PSRR
V
Power-up, power-down and propagation times
t
t
t
t
d(on)
d(mute_off)
d(soft_mute)
PD
amb
po
o(RMS)
n(o)
o(RMS)
= 25
°
C unless otherwise specified.
AC characteristics
signal-to-noise ratio
power supply rejection ratio
Parameter
RMS output power
output power efficiency
total harmonic distortion-plus-noise P
output noise voltage
RMS output voltage
turn-on delay time
mute off delay time
soft mute delay time
propagation delay
14.2 AC characteristics
DDD
= 1.8 V; V
All information provided in this document is subject to legal disclaimers.
Rev. 02 — 15 October 2010
Conditions
R
R
R
R
R
R
P
soft mute; A-weighted
V
V
At −9 dBFS (RMS) digital input
volume control = 0 dB
bass and treble control = 0 dB
equalizer bypassed and DRC bypassed
Off mode to Operating mode, soft de-mute
excluded
bass and treble control = 0 dB, equalizer
bypassed and DRC bypassed.
DDP
o(RMS)
o(RMS)
PVDD
ripple
L
L
L
L
L
L
THD+N = 1 %
THD+N = 10 %
THD+N = 1 %
THD+N = 10 %
THD+N = 1 %
THD+N = 10 %
THD+N = 1 %
THD+N = 10 %
THD+N = 1 %
THD+N = 10 %
THD+N = 1 %
THD+N = 10 %
= 8 Ω
= 4 Ω
= 8 Ω; V
= 4 Ω; V
= 8 Ω; V
= 4 Ω; V
= 3.7 V; R
= 200 mV; f
= 5 V; P
= 850 mW
= 100 mW
DDP
DDP
DDP
DDP
Mono BTL class-D audio amplifier with digital input
L
o(RMS)
= 4.2 V
= 4.2 V
= 5.0 V
= 5.0 V
= 8
ripple
Ω
= 1.3 W; A-weighted
; L
= 217 Hz
L
= 44
μ
H; f
i
= 1 kHz; f
s
Min
0.65
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
65
1.9
-
-
-
-
= 48 kHz; clip control off;
Typ
0.7
0.85
1.2
1.5
0.9
1.1
1.6
1.95
1.35
1.6
2.35
2.75
92
0.02
60
94
80
2.1
-
-
-
600
TFA9879
© NXP B.V. 2010. All rights reserved.
Max
-
-
-
-
-
-
-
-
-
-
-
-
-
0.1
-
-
-
2.3
5.6
2.67
2.67
-
40 of 60
ms
Unit
W
W
W
W
W
W
W
W
W
W
W
W
%
%
μV
dB
dB
V
ms
ms
μs