Datasheet

TAS5631B
SLES263C –NOVEMBER 2010–REVISED SEPTEMBER 2012 www.ti.com
AUDIO CHARACTERISTICS (BTL)
Audio performance is recorded as a chipset consisting of a TAS5518 PWM processor (modulation index limited to 97.7%)
and a TAS5631B power stage. PCB and system configurations are in accordance with recommended guidelines. Audio
frequency = 1 kHz, PVDD_X = 50 V, GVDD_X = 12 V, R
L
= 4 Ω, f
S
= 384 kHz, R
OC
= 22 kΩ, T
C
= 75°C;
output filter: L
DEM
= 10 μH, C
DEM
= 680 nF, MODE = 000, unless otherwise noted.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
R
L
= 4 Ω, 10% THD+N, clipped input signal 300
R
L
= 6 Ω, 10% THD+N, clipped input signal 210
R
L
= 8 Ω, 10% THD+N, clipped input signal 160
P
O
Power output per channel W
R
L
= 4 Ω, 1% THD+N, unclipped input signal 240
R
L
= 6 Ω, 1% THD+N, unclipped input signal 160
R
L
= 8 Ω, 1% THD+N, unclipped input signal 125
THD+N Total harmonic distortion + noise 1 W 0.03%
V
n
Output integrated noise A-weighted, TAS5518 modulator 180 μV
|V
OS
| Output offset voltage No signal 15 40 mV
SNR Signal-to-noise ratio
(1)
A-weighted, TAS5518 modulator 103 dB
A-weighted, input level –60 dBFS using TAS5518
DNR Dynamic range 103 dB
modulator
Power dissipation due to idle losses
P
idle
P
O
= 0, all channels switching
(2)
3.9 W
(I
PVDD_X
)
(1) SNR is calculated relative to 1% THD-N output level.
(2) Actual system idle losses also are affected by core losses of output inductors.
AUDIO SPECIFICATION (Single-Ended Output)
Audio performance is recorded as a chipset consisting of a TAS5086 PWM processor (modulation index limited to 97.7%)
and a TAS5631B power stage. PCB and system configurations are in accordance with recommended guidelines. Audio
frequency = 1 kHz, PVDD_X = 50 V, GVDD_X = 12 V, R
L
= 2 Ω, f
S
= 384 kHz, R
OC
= 22 kΩ, T
C
= 75°C;
output filter: L
DEM
= 7 μH, C
DEM
= 470 nF, MODE = 100, unless otherwise noted.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
R
L
= 2 Ω, 10%, THD+N, clipped input signal 145
R
L
= 3 Ω, 10%, THD+N, clipped input signal 100
R
L
= 4 Ω, 10%, THD+N, clipped input signal 75
P
O
Power output per channel W
R
L
= 2 Ω, 1% THD+N, unclipped input signal 110
R
L
= 3 Ω, 1% THD+N, unclipped input signal 75
R
L
= 4 Ω, 1% THD+N, unclipped input signal 55
THD+N Total harmonic distortion + noise 1 W 0.04%
V
n
Output integrated noise A-weighted, TAS5086 modulator 140 μV
SNR Signal-to-noise ratio
(1)
A-weighted, TAS5086 modulator 100 dB
A-weighted, input level –60 dBFS using TAS5086
DNR Dynamic range 100 dB
modulator
P
idle
Power dissipation due to idle losses (I
PVDD_X
) P
O
= 0, 4 channels switching
(2)
3 W
(1) SNR is calculated relative to 1% THD-N output level.
(2) Actual system idle losses are affected by core losses of output inductors.
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