TPA122
150-mW STEREO AUDIO POWER AMPLIFIER
SLOS211C – AUGUST1998 – REVISED MARCH 2000
dc electrical characteristics at T = 25°C, V
= 3.3 V
DD
A
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
mV
dB
V
Input offset voltage
5
IO
PSRR
Power supply rejection ratio
Supply current
V
DD
= 3.2 V to 3.4 V
83
1.5
10
I
I
3
mA
µA
DD
Supply current in SHUTDOWN mode
Input impedance
50
DD(SD)
Z
I
>1
MΩ
ac operating characteristics, V
= 3.3 V, T = 25°C, R = 8 Ω
DD
A
L
PARAMETER
Output power (each channel)
Total harmonic distortion + noise
Maximum output power BW
Phase margin
TEST CONDITIONS
MIN
TYP
MAX
UNIT
†
70
P
THD ≤ 0.1%
= 70 mW,
mW
O
THD+N
P
20–20 kHz
THD <5%
2%
>20
58°
68
O
B
OM
G = 10,
kHz
Open loop
f = 1 kHz
f = 1 kHz
Supply ripple rejection
dB
dB
Channel/Channel output separation
Signal-to-noise ratio
86
SNR
P
O
= 100 mW
100
9.5
dB
V
n
Noise output voltage
µV(rms)
†
Measured at 1 kHz
dc electrical characteristics at T = 25°C, V
= 5 V
DD
A
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
mV
dB
V
Input offset voltage
5
IO
PSRR
Power supply rejection ratio
Supply current
V
DD
= 4.9 V to 5.1 V
76
1.5
60
I
I
3
mA
µA
DD
Supply current in SHUTDOWN mode
Input impedance
100
DD(SD)
Z
I
>1
MΩ
ac operating characteristics, V
= 5 V, T = 25°C, R = 8 Ω
A L
DD
PARAMETER
Output power (each channel)
Total harmonic distortion + noise
Maximum output power BW
Phase margin
TEST CONDITIONS
THD ≤ 0.1%
P = 150 mW, 20–20 kHz
O
MIN
TYP
70†
2%
>20
56°
68
MAX
UNIT
P
mW
O
THD+N
B
OM
G = 10,
THD <5%
kHz
Open loop
f = 1 kHz
f = 1 kHz
Supply ripple rejection ratio
dB
dB
Channel/channel output separation
Signal-to-noise ratio
86
SNR
P
O
= 150 mW
100
9.5
dB
V
n
Noise output voltage
µV(rms)
†
Measured at 1 kHz
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
