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参数资料
| 型号： | LA4820M |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 0.12 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| 封装： | MFP-24 |
| 文件页数： | 12/21页 |
| 文件大小： | 637K |
| 代理商： | LA4820M |
Specifications
Maximum Ratings at Ta=25 °C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
VCC1,2 max
8.0
V
Allowable power dissipation
Pd max
580
mW
With Sanyo evaluation board (84.2
× 92.6 mm2)
1.1
W
Operating temperature
Topr
–20 to +75
°C
Storage temperature
Tstg
–40 to +150
°C
Operating Conditions at Ta=25 °C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
VCC1
6.0
V
Operating voltage range
VCC1 op
2.5 to 7.2
V
VCC2 op
2.0 to 7.2
V
Operating Characteristics at Ta=25 °C, VCC1 = 6.0 V, fi = 1 kHz, 0.775 V = 0 dBm,
R
L =16 : monaural amplifier, RL =16 : headphone amplifier
Parameter
Symbol
Conditions
min
typ
max
Unit
[Total]
Quiescent current
ICCO1
Rg=0 k
, monaural amplifier
7.0
11.5
21.0
mA
ICCO2
Rg=0 k
, headphone amplifier
5.5
9.0
14.0
mA
ICCO3
Headphone common amplifier off
4.0
6.3
10.0
mA
Input resistance
Ri
10
13
16
k
[Monaural Amplifier]
Output power
PO1
THD = 10%, pin 12 connected to GND
500
760
mW
Voltage gain (closed)
VG1
VO = 0 dBm
36.0
39.0
42.0
dB
Total harmonic distortion
THD1
PO = 100 mW
0.1
1.0
%
Output noise voltage
VNO 1
Rg=0
, BPF = 20 to 20 kHz
170
300
V
Ripple rejection ratio
Rr1
Rg = 0
, Vr = –10 dBm, fr = 100 Hz
60
77
dB
DC offset voltage
VOFF1
Between pin 19 and pin 21
–80
0
+80
mV
[Non-clipping + Monaural Amplifier]
Output power
PO2
Vi = 0 dBm
300
450
mW
Total harmonic distortion
THD2
Vi = 0 dBM
1.2
2.0
%
[Output Limiter + Monaural Amplifier]
Output power
PO3
Vi = 0 dBm, output limiter input resistance 220
120
200
300
mW
Total harmonic distortion
THD3
Vi = 0 dBm, output limiter input resistance 220
0.5
1.2
%
[Headphone Amplifier]
Output power
PO4
THD = 10%
30
120
mW
Voltage gain (closed)
VG2
VO = –10 dBm
15.3
18.3
21.3
dB
Total harmonic distortion
THD4
PO = 1 mW
0.1
0.5
%
Interchannel crosstalk
CT
VO = –5 dBm, Rg = 0
30
39
dB
Output noise voltage
VNO2
Rg=0
, BPF = 20 to 20 kHz
16
35
V
Ripple rejection ratio
Rr2
Rg = 0
, Vr = –10 dBm, fr = 100 Hz
70
92
dB
DC offset voltage
VOFF2
Between pin 15 and pin 16, and pin 16 and pin 17
–40
0
+40
mV
[PVSS + Headphone Amplifier]
PVSS voltage
VO
Vi = –30 dBm, PVSS2
–39
–36
–33
dBm
PVSS distortion factor
THD5
Vi = –30 dBm, PVSS2
0.25
1.6
%
PVSS start input
VOPi
PVSS2
–59
–55
–51
dBm
PVSS width
WPVSS
Input width from the starting point to the point
where the output is +4 dB, PVSS ON
28
35
dB
[Ripple Filter]
Output voltage
VRF
IRF = 300 mA, 2SB1295 hFE6 used
5.30
5.49
5.70
V
Ripple rejection ratio
Rr3
Vr = –10 dBm, fr = 100 Hz, IRF = 300 mA,
2SB1295 hFE6 used
30
34
dB
LA4820M
No.5205-2/21
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