Datasheet

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DISSIPATION RATING TABLE
RECOMMENDED OPERATING CONDITIONS
ELECTRICAL CHARACTERISTICS
OPERATING CHARACTERISTICS
ELECTRICAL CHARACTERISTICS
TPA721
SLOS231E – NOVEMBER 1998 – REVISED JUNE 2004
PACKAGE T
A
≤ 25°C DERATING FACTOR T
A
= 70°C T
A
= 85°C
D 725 mW 5.8 mW/°C 464 mW 377 mW
DGN 2.14 W
(1)
17.1 mW/°C 1.37 W 1.11 W
(1) See the Texas Instruments document, PowerPAD Thermally Enhanced Package Application Report
(SLMA002), for more information on the PowerPAD package. The thermal data was measured on a
PCB layout based on the information in the section entitled Texas Instruments Recommended Board
for PowerPAD on page 33 of that document.
MIN MAX UNIT
V
DD
Supply voltage 2.5 5.5 V
V
IH
High-level voltage, (SHUTDOWN) 0.9 V
DD
V
V
IL
Low-level voltage, (SHUTDOWN) 0.1 V
DD
V
T
A
Operating free-air temperature –40 85 °C
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, R
L
= 8 Ω, RF = 10 kΩ 20 mV
PSRR Power supply rejection ratio V
DD
= 3.2 V to 3.4 V 85 dB
I
DD
Supply current SHUTDOWN = 0 V, RF = 10 kΩ 1.25 2.5 mA
I
DD(SD)
Supply current, shutdown mode (see Figure 4 ) SHUTDOWN = V
DD
, RF = 10 kΩ 7 50 µA
|I
IH
| SHUTDOWN, V
DD
= 3.3 V, V
i
= 3.3 V 1 µA
|I
IL
| SHUTDOWN, V
DD
= 3.3 V, V
i
= 0 V 1 µA
V
DD
= 3.3 V, T
A
= 25°C, R
L
= 8 Ω
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
P
O
Output power
(1)
THD = 0.5%, See Figure 9 250 mW
THD + N Total harmonic distortion plus noise P
O
= 250 mW, f = 200 Hz to 4 kHz, See Figure 7 0.55%
B
OM
Maximum output power bandwidth Gain = 2, THD = 2%, See Figure 7 20 kHz
B
1
Unity-gain bandwidth Open loop, See Figure 15 1.4 MHz
k
SVR
Supply ripple rejection ratio f = 1 kHz, C
B
= 1 µF, See Figure 2 79 dB
V
n
Noise output voltage Gain = 1, C
B
= 0.1 µF, See Figure 19 17 µV(rms)
(1) Output power is measured at the output terminals of the device at f = 1 kHz.
at specified free-air temperature, V
DD
= 5 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, R
L
= 8 Ω, RF = 10 kΩ 20 mV
PSRR Power supply rejection ratio V
DD
= 4.9 V to 5.1 V 78 dB
I
DD
Supply current SHUTDOWN = 0 V, RF = 10 kΩ 1.25 2.5 mA
I
DD(SD)
Supply current, shutdown mode (see Figure 4 ) SHUTDOWN = V
DD
, RF = 10 kΩ 50 100 µA
|I
IH
| SHUTDOWN, V
DD
= 5.5 V, V
i
= V
DD
1 µA
|I
IL
| SHUTDOWN, V
DD
= 5.5 V, V
i
= 0 V 1 µA
3