Texas Instruments TPA3122D2, Instructions Manual

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DC CHARACTERISTICS
AC CHARACTERISTICS
TPA3122D2
SLOS527A – DECEMBER 2007 – REVISED DECEMBER 2007
T
A
= 25
°
C, V
CC
= 24 V, R
L
= 4 Ω (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Class-D output offset voltage
| V
OS
| V
I
= 0 V, A
V
= 36 dB 7.5 50 mV
(measured differentially)
V
(BYPASS)
Bypass output voltage No load AV
CC
/8 V
I
CC(q)
Quiescent supply current SD = 2 V, MUTE = 0 V, No load 23 37 mA
I
CC(q)
Quiescent supply current in mute mode MUTE = 2 V, No load 23 mA
I
CC(q)
Quiescent supply current in shutdown 1
SD = 0.8 V , No load 0.39 mA
mode
r
DS(on)
Drain-source on-state resistance 200 m Ω
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
Gain1 = 2 V
Gain0 = 2 V 34 36 38
Mute Attenuation V
I
= 1Vrms –82
T
A
= 25
°
C, V
CC
= 24V, R
L
= 4 Ω (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
CC
= 12 V, V
ripple
= 200 mV
PP
100 Hz –30 dB
K
SVR
Supply ripple rejection
Gain = 20 dB
1 kHz -48 dB
V
CC
= 12 V, R
L
= 4 Ω , f = 1 kHz 4
Output Power at 1% THD+N
V
CC
= 24 V, R
L
= 8
Ω
, f = 1 kHz 8
P
O
W
V
CC
= 12 V, R
L
= 4 Ω , f = 1 kHz 5
Output Power at 10%
THD+N
V
CC
= 24 V, R
L
= 8 Ω , f = 1 kHz 10
R
L
= 4 Ω , f = 1 kHz, P
O
= 1 W 0.1%
Total harmonic dist
THD+N
noise
R
L
= 8 Ω , f = 1 kHz, P
O
= 1 W 0.06%
85
µ
V
V
n
Output integrated noise floor 20 Hz to 22 kHz, A-weighted filter, Gain = 20 dB
–80 dB
Crosstalk P
O
= 1 W, f = 1kHz; Gain = 20 dB –60 dB
SNR Signal-to-noise ratio Max Output at THD+N < 1%, f = 1 kHz, Gain = 20 dB 99 dB
Thermal trip point 150
°
C
Thermal hysteresis 30
°
C
f
OSC
Oscillator frequency 10 V ≤ V
CC
230 250 270 kHz
mute delay time from mute input switches high until outputs muted 120 msec
Δ t
unmute delay time from mute input switches low until outputs unmuted 120 msec
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