Datasheet

TPA0253
1-W MONO AUDIO POWER AMPLIFIER
WITH HEADPHONE DRIVE
SLOS280D – JANUARY 2000 – REVISED NOVEMBER 2002
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
recommended operating conditions
MIN MAX UNIT
Supply voltage, V
DD
2.5 5.5 V
ST/MN
V
DD
= 3 V 2.7
High-level input voltage, V
IH
ST/MN
V
DD
= 5 V 4.5
V
High level
in ut
voltage,
V
IH
SHUTDOWN 2
V
ST/MN
V
DD
= 3 V 1.65
Low-level input voltage, V
IL
ST/MN
V
DD
= 5 V 2.75
V
Low level
in ut
voltage,
V
IL
SHUTDOWN 0.8
V
Operating free-air temperature, T
A
–40 85
°C
electrical characteristics at specified free-air temperature, V
DD
= 3 V, T
A
= 25°C (unless otherwise
noted)
PARAMETER TEST CONDITIONS
MIN TYP MAX UNIT
|V
OO
| Output offset voltage (measured differentially)
R
L
= 4 Ω, ST/MN = 0 V, SHUTDOWN = 2 V
30 mV
PSRR Power supply rejection ratio V
DD
= 2.9 V to 3.1 V, BTL mode 65 dB
|I |
High level input current
SHUTDOWN, V
DD
= 3.3 V, V
I
= V
DD
1
A
|I
IH
| High-level input current
ST/MN
, V
DD
= 3.3 V, V
I
= V
DD
1
µA
|I |
Low level input current
SHUTDOWN, V
DD
= 3.3 V, V
I
= 0 V 1
A
|I
IL
| Low-level input current
ST/MN
, V
DD
= 3.3 V, V
I
= 0 V 1
µA
Z
I
Input impedance 50
kΩ
I
DD
Supply current V
DD
= 2.5 V, SHUTDOWN = 2 V 2.7 4 mA
I
DD(SD)
Supply current, shutdown mode SHUTDOWN = 0 V 1 10
µA
R
F
Feedback resistor
V
DD
= 2.5 V, R
L
= 4 Ω, ST/MN = 1.375 V,
SHUTDOWN
= 2 V
47 50 57
kΩ
operating characteristics, V
DD
= 3 V, T
A
= 25°C, R
L
= 8 Ω, f = 1 kHz (unless otherwise noted)
PARAMETER TEST CONDITIONS
MIN TYP MAX UNIT
THD = 0.1%, BTL mode, Gain = 14 dB 300
P
O
Output power, see Note 1
THD = 0.1%
Gain = 1.9 dB
SE mode, R
L
= 32 Ω
30
mW
THD + N
Total harmonic distortion plus
noise
P
O
= 250 mW, f = 20 Hz to 20 kHz 0.2%
B
OM
Maximum output power bandwidth Gain = 1.9 dB, THD = 2% 20 kHz
Supple ripple rejection ratio
f 1 kHz
C047F
BTL mode 46
dB
Supple ripple rejection ratio f = 1 kHz,
C
(BYP)
= 0.47 µF
SE mode 68
dB
V
Noise out
p
ut voltage
C
(BYP)
047µF
f=20Hzto20kHz
BTL mode 83
µV
RMS
V
n
Noise output voltage
C
(BYP)
= 0.47 µF,
f = 20 Hz to 20 kHz
SE mode 33
µV
RMS
NOTE 1: Output power is measured at the output terminals of the device at f = 1 kHz.