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參數(shù)資料
| 型號： | LA4302T |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 4 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20 |
| 封裝： | 0.225 INCH, TSSOP-20 |
| 文件頁數(shù)： | 5/12頁 |
| 文件大小： | 178K |
| 代理商： | LA4302T |
LA4302T
No.7462-2/12
Operating Conditions at Ta = 25
°C *1
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
VCC
12
V
BTL operation
8
Recommended load resistance range
RL op
SE operation
4
Allowable operation supply voltage range
VCC op
*2
10 to 16
V
Notes : 1. Must be used in ranges of VCC, RL, and the output level such that the maximum ratings are not exceeded.
2. The LA4302T is designed for use with a VCC voltage of 12V. Even if this device is used within the allowable operation supply voltage range, at high
output levels or at high ambient temperatures, problems, such as sound being interrupted due to the operation of the various protection circuits,
become more likely to occur at higher VCC voltages. In particular, if VCC exceeds 12V, designers must verify carefully that problems such as
inadequate thermal dissipation or excessive voltage fluctuations (with the load current) in the power supply do not occur in the end product.
Electrical Characteristics at Ta = 25
°C, VCC = 12V, RL = 8 (BTL), 4 (SE), f = 1kHz, Rg = 600
Ratings
Parameter
Symbol
Conditions
min
typ
max
Unit
Quiescent current
ICCO
Rg = 0, RL = open
40
90
mA
Standby current
Ist
VSTB = 0V
0
10
A
Amplifier operation
8.8
VCC
V
Muted
2.5
7.5
V
Standby, mute, amplifier operation
threshold voltages (pin 17)
Vmode
Standby
0
1.5
V
SE operation (1/2VCC ≤ pin 6 voltage)
6
VCC
V
BTL/SE (single ended) threshold voltage
(pin 6)
VSW
BTL operation (pin 6 voltage < 1/2VCC)
0
5.4
V
BTL Operation
Output power
PO1
THD = 10%
6.5
8.5
W
Total harmonic distortion
THD1
PO = 1W, Filter = FLAT
0.04
0.15
%
Voltage gain
VG1
VO = 0dBm
24
26
28
dB
Output noise voltage (RMS)
VNO1
Rg = 0, BPF = 20Hz to 20kHz
0.15
0.25
mV
Ripple rejection ratio
SVRR1
Rg = 0, VCCR = 0dBm, fR = 100Hz
45
50
dB
Input resistance
Ri 1
Channel 1, independent input
42
60
78
k
Output offset voltage
VN offset
Rg = 0
-350
+350
mV
Muting attenuation
VATT1
VO = 1VRMS, BPF = 20Hz to 20kHz
70
80
dB
SE (Single Ended) Operation
Output power
PO2
THD = 10%
3
4
W
Total harmonic distortion
THD2
PO = 1W, Filter = FLAT
0.15
0.25
%
Voltage gain
VG2
VO = 0dBm
18
20
22
dB
Output noise voltage (RMS)
VNO2
Rg = 0, BPF = 20Hz to 20kHz
0.07
0.15
mV
Ripple rejection ratio
SVRR2
Rg = 0, VCCR = 0dBm, fR = 100Hz
40
50
dB
Channel separation
CH. Sep
Rg = 10k
, VO = 0dBm
40
55
dB
Input resistance
Ri 2
42
60
78
k
Muting attenuation
VATT2
VO = 1VRMS, BPF = 20Hz to 20kHz
70
80
dB
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