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參數(shù)資料
| 型號： | LA4587M |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Tuning Fork Crystal; Frequency:32.768kHz; Frequency Tolerance:+/- 20 ppm; Load Capacitance:12.5pF; Crystal Terminals:PCB Surface Mount; ESR:50kohm; Leaded Process Compatible:No; Peak Reflow Compatible (260 C):No; Number of Pins:4 |
| 中文描述： | 前置放大器功率放大器為1.5 V耳機音響 |
| 文件頁數(shù)： | 9/18頁 |
| 文件大小： | 342K |
| 代理商： | LA4587M |
Description of External Components
.
C
1
(1.0 to 10 μF):
V
REF
amplifier is referenced to this decoupling capacitor.
The V
REF
SVRR depends on the value of this capacitor.
Note that if the capacitance is reduced, the SVRR worsens.
.
C
2
, C
10
:
.
C
3
, C
9
(0.47 to 3.3 μF):
.
C
4
, C
8
:
.
C
5
, C
7
:
.
C
6
(0.1 to 22 μF):
.
C
11
, C
12
(3.3 to 10 μF):
.
C
13
, C
15
(1.0 to 3.3 μF):
.
C
14
, C
17
:
.
C
16
(1.0 to 4.7 μF):
.
C
18
, C
23
, C
26
(0.1 to 1.0 μF):
.
C
19
, C
22
, C
25
(3.3 to 10 μF):
.
C
20
, C
24
:
.
C
21
(100 to 2200 pF):
.
C
29
(4.7 to 10 μF):
.
C
28
(22 to 220 μF):
.
C
30
(2.2 to 10 μF):
.
C
31
, C
32
(0.047 to 0.22 μF):
.
R
1
, R
10
:
.
R
2
, R
9
:
.
R
3
, R
8
:
.
R
4
, R
7
:
.
R
5
, R
6
:
.
R
11
, R
12
, R
13
:
.
R
14
, R
15
(100 to 430 k
):
Playback preamplifier EQ constant.
Preamplifier output capacitor.
AMSS input HPF capacitor.
EQ constant for metal (built-in resistance 3.9 k
±
15%).
V
REF
decoupling capacitor.
For high-frequency noise rejection.
NFC decoupling capacitor.
Note that if the capacitance is reduced, the preamplifier low-frequency gain decreases.
Power amplifier input capacitor (Input resistance: 10 k
).
Capacitor for low boost LPF.
The low boost gain depends on the capacitance.
Boost amplifier NF capacitator.
Note that if the capacitance is reduced, the low boost low-frequency gain decreases.
Oscillation blocking capacitator.
Power amplifier NF capacitor.
Note that if the capacitance is reduced, the power amplifier low-frequency gain decreases.
Bass high boost capacitor.
The high gain depends on the capacitance.
Oscillation blocking capacitator.
RF output decoupling capacitor. (Also serves as the power supply capacitor and the
oscillation blocking capacitor.)
Power supply capacitor.
RF is referenced to this LPF capacitor.
The RF SVRR depends on the capacitance.
Switching circuit smoothing capacitor. Must be adjusted according to the set timing.
For preamplifier gain adjustment.
Playback preamplifier EQ constant.
EQ constant for metal.
10 k
volume control.
For AMSS gain adjustment and HPF.
For oscillation blocking.
For switching circuit smoothing (discharge resistors).
LA4587M
No.5204-9/18
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