參數(shù)資料
型號： TPA721DGNRG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 音頻／視頻放大
英文描述： 0.7 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8
封裝： GREEN, PLASTIC, MSOP-8
文件頁數(shù)： 20/26頁
文件大小： 663K
代理商： TPA721DGNRG4
www.ti.com
DISSIPATION RATING TABLE
RECOMMENDED OPERATING CONDITIONS
ELECTRICAL CHARACTERISTICS
OPERATING CHARACTERISTICS
ELECTRICAL CHARACTERISTICS
TPA721
SLOS231E – NOVEMBER 1998 – REVISED JUNE 2004
PACKAGE
TA ≤ 25°C
DERATING FACTOR
TA = 70°C
TA = 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
VDD
Supply voltage
2.5
5.5
V
VIH
High-level voltage, (SHUTDOWN)
0.9 VDD
V
VIL
Low-level voltage, (SHUTDOWN)
0.1 VDD
V
TA
Operating free-air temperature
–40
85
°C
at specified free-air temperature, V
DD = 3.3 V, TA = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VOO
Output offset voltage (measured differentially)
SHUTDOWN = 0 V, RL = 8 , RF = 10 k
20
mV
PSRR
Power supply rejection ratio
VDD = 3.2 V to 3.4 V
85
dB
IDD
Supply current
SHUTDOWN = 0 V, RF = 10 k
1.25
2.5
mA
IDD(SD)
Supply current, shutdown mode (see Figure 4)
SHUTDOWN = VDD, RF = 10 k
7
50
A
|IIH|
SHUTDOWN, VDD = 3.3 V, Vi = 3.3 V
1
A
|IIL|
SHUTDOWN, VDD = 3.3 V, Vi = 0 V
1
A
V
DD = 3.3 V, TA = 25°C, RL = 8
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
PO
Output power (1)
THD = 0.5%,
250
mW
THD + N
Total harmonic distortion plus noise
PO = 250 mW,
f = 200 Hz to 4 kHz, See Figure 7
0.55%
BOM
Maximum output power bandwidth
Gain = 2,
THD = 2%, See Figure 7
20
kHz
B1
Unity-gain bandwidth
Open loop,
1.4
MHz
kSVR
Supply ripple rejection ratio
f = 1 kHz,
CB = 1 F, See Figure 2
79
dB
Vn
Noise output voltage
Gain = 1,
CB = 0.1 F, See Figure 19
17
V(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, TA = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VOO
Output offset voltage (measured differentially)
SHUTDOWN = 0 V, RL = 8 , RF = 10 k
20
mV
PSRR
Power supply rejection ratio
VDD = 4.9 V to 5.1 V
78
dB
IDD
Supply current
SHUTDOWN = 0 V, RF = 10 k
1.25
2.5
mA
IDD(SD)
Supply current, shutdown mode (see Figure 4)
SHUTDOWN = VDD, RF = 10 k
50
100
A
|IIH|
SHUTDOWN, VDD = 5.5 V, Vi = VDD
1
A
|IIL|
SHUTDOWN, VDD = 5.5 V, Vi = 0 V
1
A
3
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