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參數(shù)資料
| 型號： | AD5801 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Piezo-Electric Actuator Controller |
| 中文描述： | 壓電致動器控制器 |
| 文件頁數(shù)： | 7/13頁 |
| 文件大?。?/td> | 209K |
| 代理商： | AD5801 |
Preliminary Technical Data
AD5801
Table 3. Pin Function Descriptions
Pin. No.
Mnemonic
SHUTTER_VBATT
STROBE
Rev. 0 | Page 7 of 13
Description
Power Connection for the Shutter Drivers SOUT1-SOUT3, to be connected to VBATT
Duration of the STROBE signal width sets the duration of current pulsed from SOUT1 to SOUT3. The
STROBE function can be disabled and the pulse duration can be programmed over the I”C interface if
required.
This is the compensation pin for the internal Low Drop Out Regulator LDO2. A 4.7μF capacitor should be
connected between LDO2_COMP and ANAGND.
Input to ADC, the AD5801 can be used to measure current in an opto-reflective position feedback
scheme,or voltage from a Hall sensor or some other voltage output sensor, to determine lens postion.
Input to ADC, the AD5801 can be used to measure current in an opto-reflective position feedback
scheme,or voltage from a Hall sensor or some other voltage output sensor, to determine lens postion.
Programmable current output.
Programmable current output.
Connected to external resistor for bias current generator
Asynchonous system reset signal
I2C Interface Signal
I2C Interface Signal
Optional External Reference Clock Signal
Digital Ground
Digital Supply
Pattern programmable output driver which can be used for zoom control.
Pattern programmable output driver which can be used for zoom control.
Pattern programmable output driver which can be used for zoom control.
Pattern programmable output driver which can be used for zoom control.
Pattern programmable output driver which can be used for auto focus control.
Pattern programmable output driver which can be used for auto focus control.
Power Supply pin for pattern programmable putput drivers FC, FD, ZA, ZB, ZC, and ZD. This pin can be
connected to LDO_ACT or a supply of 5V max.
Ground for Focus Actuator/Motor Drivers FA and FB and for pattern drivers FC, FD, ZA, ZB, ZC, and ZD.
Pattern programmable low Ronoutput driver which can be used for driving auto focus piezo actuator
directly.
Pattern programmable low Ronoutput driver which can be used for driving auto focus piezo actuator
directly.
Supply for low Ron Drivers FA and FB, can be connected to LDO_ACT or a supply of 5V max.
Output of integrated Low Drop Out Regulator. A 10μF decoupling capacitor should be connected
between LDO_ACT and ANAGND.
Battery supply connection.
Analog Ground connection.
Ground connection for Shutter Drivers SOUT1-SOUT3, this pins should be connected to ANAGND and
special care should be exercised to ensure that the ground return path from this pin to ANAGND is kept
to a minimum impedance.
Output for Shutter/Iris/NDF/Lens Cover Drive and control.
Output for Shutter/Iris/NDF/Lens Cover Drive and control.
Output for Shutter/Iris/NDF/Lens Cover Drive and control.
LDO2_COMP
POSSENSE1
POSSENSE2
POSENSAF
POSENSZ
BIASTRES
XSHUTDOWND
SCL
SDA
EXTCLK
DIG_GND
VAUX
ZD
ZC
ZB
ZA
FD
FC
PWR_DRIVERS
GND_DRIVESTAGE
FB
FA
PWR_DRIVESTAGE
LDO_ACT
VBATT
ANAGND
SHUTTER_GND
SOUT1
SOUT2
SOUT3
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