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參數(shù)資料
| 型號： | FAN8742MTF |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 光電元器件 |
| 英文描述： | Spindle Motor and 6-CH Driver |
| 中文描述： | CD MOTOR DRIVER, PDSO56 |
| 封裝： | TSSOP-56 |
| 文件頁數(shù)： | 15/23頁 |
| 文件大小： | 541K |
| 代理商： | FAN8742MTF |
15
www.fairchildsemi.com
FAN8741/FAN8742 Rev. 1.0.1
F
3. Channel 1~4 Schematic
The reference voltage(ref) is given externally through pin21.
The input OP-amp output signal is amplified by (20K/10K) times and then fed to the power amplifier. The gain of power amplifier is
4 so the total max gain of channels 1 through 4 is 8.
4. Mute Inputs
FAN8741 has 2 independent mute pins: Pin #22(MUTE1) and Pin #23(MUTE2). Details are shown below.
Note:
To make the spindle short brake, MUTE2 goes low and the spindle command must not be in deadzone(±50mV). When the spindle
command is within the deadzone, the spindle block enters disable mode even though MUTE2 is low.
MUTE1
MUTE2
SPIN-
DLE
SLED
CH1/2/3
CH4(typ. load-
ing driver)
SPINDLE brake type
H
H
Enable
Disable
Reverse brake when
SPIN<VREF
H
L
Enable
Disable
Short brake
SPIN
≠
VREF
(note)
L
H
Disable
Enable
Disable
Enable
-
L
L
Disable
-
L
20k
10k
ref
power amp
M
Command
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| FAN9100_ZBA3026B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
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