Datasheet

TPA311
350-mW MONO AUDIO POWER AMPLIFIER
SLOS207C – JANUARY 1998 – REVISED MAY 2003
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
recommended operating conditions
MIN MAX UNIT
Supply voltage, V
DD
2.5 5.5 V
High level voltage V
IH
SHUTDOWN 0.9 V
DD
V
High-level voltage, V
IH
SE/BTL 0.9 V
DD
V
Low level voltage V
IL
SHUTDOWN 0.1 V
DD
V
Low-level voltage, V
IL
SE/BTL 0.1 V
DD
V
Operating free-air temperature, T
A
(see Table 3) –40 85
°C
electrical characteristics at specified free-air temperature, V
DD
= 3.3 V, T
A
= 25°C (unless otherwise
noted)
PARAMETER TEST CONDITIONS
MIN TYP MAX UNIT
|V
OO
| Output offset voltage (measured differentially)
SHUTDOWN = 0 V, SE/BTL = 0 V, R
L
= 8 Ω,
R
F
= 10 kΩ
5 20 mV
PSRR
Power supply rejection ratio
V 32Vto34V
BTL mode 85
dB
PSRR Power supply rejection ratio V
DD
= 3.2 V to 3.4 V
SE mode 83
dB
I
Supply current (see Figure 6)
SHUTDOWN = 0 V,
SE/BTL
= 0.33 V, R
F
= 10 kΩ
BTL mode 0.7 1.5
mA
I
DD
Supply current (see Figure 6)
SHUTDOWN = 0 V,
SE/BTL
= 2.97 V, R
F
= 10 kΩ
SE mode 0.35 0.75
mA
I
DD(SD)
Supply current, shutdown mode
(see Figure 7)
SHUTDOWN = V
DD
, SE/BTL = 0 V,
R
F
= 10 kΩ
7 50
µA
|I
IH
|
High level in
p
ut current
SHUTDOWN, V
DD
= 3.3 V, V
I
= V
DD
1
µA
|I
IH
| High-level input current
SE/BTL, V
DD
= 3.3 V, V
I
= V
DD
1
µA
|I
IL
|
Low level in
p
ut current
SHUTDOWN, V
DD
= 3.3 V, V
I
= 0 V 1
µA
|I
IL
| Low-level input current
SE/BTL, V
DD
= 3.3 V, V
I
= 0 V 1
µA
operating characteristics, V
DD
= 3.3 V, T
A
= 25°C, R
L
= 8 Ω
PARAMETER TEST CONDITIONS
MIN TYP MAX UNIT
P
Output power see Note 1
THD = 0.5%, BTL mode, See Figure 14 250
mW
P
O
Output power, see Note 1
THD = 0.5%, SE mode 110
mW
THD + N
Total harmonic distortion plus
noise
P
O
= 250 mW,
See Figure 12
f = 20 Hz to 4 kHz, A
V
= – 2 V/V,
1.3%
B
OM
Maximum output power bandwidth A
V
= – 2 V/V, THD = 3%, See Figure 12 10 kHz
B
1
Unity-gain bandwidth Open loop, See Figure 36 1.4 MHz
Supply ripple rejection ratio
f = 1 kHz,
See Figure 5
C
B
= 1 µF,
BTL mode,
71
dB
Supply ripple rejection ratio
f = 1 kHz,
See Figure 3
C
B
= 1 µF,
SE mode,
86
dB
V
n
Noise output voltage
A
V
= – 1 V/V,
BTL,
C
B
= 0.1 µF,
See Figure 42
R
L
= 32 Ω,
15
µV(rms)
NOTE 1: Output power is measured at the output terminals of the device at f = 1 kHz.