Datasheet

DC CHARACTERISTICS
AC CHARACTERISTICS
TPA3125D2
SLOS611 – DECEMBER 2008 ........................................................................................................................................................................................... www.ti.com
T
A
= 25 ° C, V
CC
= 24 V, R
L
= 8 Ω (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Class-D output offset voltage
| V
OS
| (measured differentially in BTL V
I
= 0 V, A
V
= 36 dB 7.5 50 mV
mode as shown in Figure 33 )
V
(BYPASS)
Bypass output voltage No load AVCC/8 V
I
CC(q)
Quiescent supply current SD = 2 V, MUTE = 0 V, no load 16 30 mA
I
CC(q)
Quiescent supply current in
MUTE = 0.8 V, no load 16 mA
mute mode
I
CC(q)
Quiescent supply current in
SD = 0.8 V, no load 0.39 1 mA
shutdown mode
r
DS(on)
Drain-source on-state
210 450 m Ω
resistance
GAIN0 = 0.8 V 18 20 22
GAIN1 = 0.8 V
GAIN0 = 2 V 24 26 28
G Gain dB
GAIN0 = 0.8 V 30 32 34
GAIN = 2 V
GAIN0 = 2 V 34 36 38
Mute attenuation V
I
= 1 Vrms – 80 dB
T
A
= 25 ° C, V
CC
= 24 V, R
L
= 8 Ω (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
CC
= 24, V
ripple
= 0.2 V
PP
, Gain = 20 dB,
k
SVR
Supply ripple rejection – 52 dB
freq = 1 kHz
Output power at 1% THD+N V
CC
= 24 V, f = 1 kHz; single-ended output 8
Output power at 10% THD+N V
CC
= 24 V, f = 1 kHz; single-ended output 10
Output power at 1% THD+N V
CC
= 12 V, f = 1 kHz; bridge-tied output 7
Output power at 10% THD+N V
CC
= 12 V, f = 1 kHz; bridge-tied output 9
P
O
W
V
CC
= 24 V, f = 1 kHz; bridge-tied output
Output power at 1% THD+N (output thermally limited to 20W unless 30
heatsink is used)
V
CC
= 24 V, f = 1 kHz; bridge-tied output
Output power at 10% THD+N (output thermally limited to 20W unless 36
heatsink is used)
Total harmonic distortion + f = 1 kHz, P
O
= 5 W; single-ended output 0.04%
THD+N
noise
Total harmonic distortion +
THD+N f = 1 kHz, P
O
= 10 W; bridge-tied output 0.04%
noise
125 µ V RMS
20 Hz to 22 kHz, A-weighted filter,
V
n
Output integrated noise floor
Gain = 20 dB
– 78 dBV
Crosstalk P
O
= 1 W, f = 1 kHz; gain = 20 dB – 70 dB
Max output at THD+N < 1%, f = 1 kHz,
SNR Signal-to-noise ratio – 92 dB
gain = 20 dB
Thermal trip point 150 ° C
Thermal hysteresis 30 ° C
f
OSC
Oscillator frequency 250 300 350 kHz
Mute delay Time from mute input switches high until 30 µ s
outputs muted
Unmute delay Time from mute input switches low until 120 ms
outputs unmuted
Start-up time Bypass capacitor on pin 6 = 1 µ F 500 ms
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