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參數(shù)資料
| 型號： | LA4587 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Tuning Fork Crystal; Frequency:32.768kHz; Crystal Terminals:Radial Leaded; ESR:35kohm; Leaded Process Compatible:No; Mounting Type:Through Hole; Peak Reflow Compatible (260 C):No; Number of Pins:2 |
| 中文描述： | 前置放大器功率放大器為1.5 V耳機(jī)音響 |
| 文件頁數(shù)： | 12/18頁 |
| 文件大小： | 342K |
| 代理商： | LA4587 |
Operation Description
.
The input amplifiers are inverting amplifiers. The gain and HPF characteristics can be adjusted through an external C-R
(input impedance).
.
The AMSS comparator outputs pulses for an input waveform that satisfies certain set conditions (frequency and voltage
level).
.
When AMSS is not used, the input pins (pins 24 and 25) are connected to V
REF
(pin 33).
Notes on the ripple filter
.
The RF SVRR can be adjusted by an external capacitor connected to pin 44.
3.3 μF
→
39 dB
4.7 μF
→
42 dB
10 μF
→
47 dB
.
It is recommended that external transistors be equivalent to the 2SB1295 with h
FE
6 rank and upward.
Note on power output
.
The power amplifier output and the common amplifier output are connected by a resistor of approximately 160
.
Notes on power mute
.
Power mute turns off the fixed current that is supplied to the power section.
.
The output DC when power mute is on is the V
REF
electric potential (0.75 V).
.
The output impedance when power mute is on is approximately 10 k
.
Input
Output
LA4587M
No.5204-12/18
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LA4587M | 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 |
| LA4589 | 1.5V Stereo Headphone Preamplifier and Power Amplifier |
| LA4589W | XTAL, 32.768 KHZ SURFACE MOUNT WATCH CRYSTAL |
| LA4590W | XTAL, 32.768KHZ 30PPM 12 P |
| LA4592W | 1.5-V Preamplifier + Power Amplifier for Headphone Stereo Products |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA4587M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Preamplifier + Power Amplifier for 1.5 V Headphone Stereos |
| LA4589 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:1.5V Stereo Headphone Preamplifier and Power Amplifier |
| LA4589W | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:1.5V Stereo Headphone Preamplifier and Power Amplifier |
| LA4590W | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:1.5V Stereo Headphone Preamplifier and Power Amplifier |
| LA4592W | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:1.5-V Preamplifier + Power Amplifier for Headphone Stereo Products |
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