參數(shù)資料
型號： TPA321DGNR
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)： 23/29頁
文件大?。?/td> 773K
代理商： TPA321DGNR
www.ti.com
ELECTRICAL CHARACTERISTICS
OPERATING CHARACTERISTICS
ELECTRICAL CHARACTERISTICS
OPERATING CHARACTERISTICS
TPA321
SLOS312C – JUNE 2000 – REVISED JUNE 2004
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
5
20
mV
PSRR
Power supply rejection ratio
VDD = 3.2 V to 3.4 V
85
dB
IDD
Supply current (see Figure 3)
SHUTDOWN = 0 V, RF = 10 k
0.7
1.5
mA
IDD(SD)
Supply current, shutdown mode (see Figure 4)
SHUTDOWN = VDD, RF = 10 k
0.15
5
A
|IIH|
High-level input current
SHUTDOWN, VDD = 3.3 V, VI = 3.3 V
1
A
|IIL|
Low-level input current
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
PO = 250 mW,
f = 20 Hz to 4 kHz,
THD + N
Total harmonic distortion plus noise
1.3%
AV = -2 V/V,
Maximum output power bandwidth
AV = -2 V/V, THD = 3%, See Figure 7
10
kHz
B1
Unity-gain bandwidth
Open loop,
1.4
MHz
Supply ripple rejection ratio
f = 1 kHz, CB = 1 F, See Figure 2
71
dB
AV = –1 V/V,
CB = 0.1 F,
Vn
Noise output voltage
15
V(rms)
RL = 32 ,
(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
5
20
mV
PSRR
Power supply rejection ratio
VDD = 4.9 V to 5.1 V
78
dB
IDD
Supply current (see Figure 3)
SHUTDOWN = 0 V, RF = 10 k
0.7
1.5
mA
IDD(SD)
Supply current, shutdown mode (see Figure 4)
SHUTDOWN = VDD, RF = 10 k
0.15
5
A
|IIH|
High-level input current
SHUTDOWN, VDD = 5.5 V, VI = VDD
1
A
|IIL|
Low-level input current
SHUTDOWN, VDD = 5.5 V, VI = 0 V
1
A
V
DD = 5 V, TA = 25°C, RL = 8
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
PO
Output power
THD = 0.5%,
700
mW
PO = 350 mW,
f = 20 Hz to 4 kHz, See
THD + N
Total harmonic distortion plus noise
1%
AV = –2 V/V,
Maximum output power bandwidth
AV = –2 V/V, THD = 2%, See Figure 11
10
kHz
B1
Unity-gain bandwidth
Open loop,
1.4
MHz
Supply ripple rejection ratio
f = 1 kHz, CB = 1 F, See Figure 2
65
dB
AV = -1 V/V,
CB = 0.1 F,
Vn
Noise output voltage
15
V(rms)
RL = 32 ,
3
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