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參數資料
| 型號： | FAN8732CG |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 光電元器件 |
| 英文描述： | Spindle motor and 5-CH actuator driver [Spindle(PWM), Sled 2-CH(PWM) 3-CH(Linear)] |
| 中文描述： | CD MOTOR DRIVER, PDSO42 |
| 封裝： | SSOP-42 |
| 文件頁數： | 14/20頁 |
| 文件大小： | 322K |
| 代理商： | FAN8732CG |
FAN8732G/FAN8732BG/FAN8732CG
14
3. CH1/CH2/CH3 Drive Part
1) The reference voltage, V
REF,
is given externally through pin 25.
2) The power amp circuit produces the differential output voltages and drives the two output power amplifier circuits.
3) The CH1/CH2 gain of DO- drive part of the power amp block is 6R/R=6 times(and the gain of CH3 is 4R/R=4times). The
DO+ drive part of the power amp block is just inverting circuit of DO- drive part so the total gain of power amp block is 12
times that is 21.58dB(in case of CH3, gain is 8 times that is 18.06dB).
4) Power reference voltage, which is the mid-point of the drive output, is set to the half of the supply voltage.
5) When the total gain is too high, the external resistors(R
EXT1
& R
EXT2
)can be used to make the gain proper.
Power amp gain
Input/Output gain[V/V]
Remark
12(21.58dB)
is gain scaler
+
+
M
25
Vref
27 28
IN1 IN2
Power amp
+
R
R
SVCC
DO
35 30
34 31
DO
+
30
R
R
R
6R
(4R)
R
6R
(4R)
R
EXT1
R
EXT2
Inside IC
36
37
40
IN3
Power reference
REXT2
---------------------+
12
REXT2
---------------------+
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| FAN8732CGX | Spindle motor and 5-CH actuator driver [Spindle(PWM), Sled 2-CH(PWM) 3-CH(Linear)] |
| FAN8732G | Spindle motor and 5-CH actuator driver [Spindle(PWM), Sled 2-CH(PWM) 3-CH(Linear)] |
| FAN8732GX | Spindle motor and 5-CH actuator driver [Spindle(PWM), Sled 2-CH(PWM) 3-CH(Linear)] |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| FAN8732CGX | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Spindle motor and 5-CH actuator driver [Spindle(PWM), Sled 2-CH(PWM) 3-CH(Linear)] |
| FAN8732G | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Spindle motor and 5-CH actuator driver [Spindle(PWM), Sled 2-CH(PWM) 3-CH(Linear)] |
| FAN8732GX | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Spindle motor and 5-CH actuator driver [Spindle(PWM), Sled 2-CH(PWM) 3-CH(Linear)] |
| FAN8741 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Spindle Motor and 6-CH Driver |
| FAN8741G | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Spindle Motor and 6-CH Driver |
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