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参数资料
| 型号： | 8983 |
| 厂商： | Allegro MicroSystems, Inc. |
| 英文描述： | SPINDLE & VOICE-COIL ACTUATION MANAGER/DRIVER |
| 中文描述： | 主轴 |
| 文件页数： | 1/2页 |
| 文件大小： | 38K |
| 代理商： | 8983 |
8983
SPINDLE & VOICE-COIL
ACTUATION MANAGER/DRIVER
DISCONTINUED PRODUCT
Logic Supply Voltage V
CC(D)
6.0 V
Operating Temperature Range,
T
A
......................................
0
°
C to +70
°
C
— FOR REFERENCE ONLY
I
Back-EMF Circuitry Eliminates Hall-Effect Sensors
I
Adaptive Commutation Delay Programmable via Serial Port
I
Programmable Slew Rate (soft switching) Eliminates Snubbers
I
Intrinsic Ground Clamp and Flyback Diodes
and/or forced cooling.
Dwg. PP-060
SPINDLE & VOICE-COIL
ACTUATION MANAGER/DRIVER
The A8983CJT provides for complete spindle and voice coil power
electronics for small form-factor HDDs (hard disk drives). The large-
scale integration and use of advanced DABiC (digital/analog-BiCMOS)
merged technologies result in minimum power dissipation, minimum
The spindle driver system incorporates a three-phase MOS power
driver and a back-EMF sensing motor commutation scheme. A pat-
ented circuit eliminates the need for an external current-sense resistor,
achieving additional headroom. Intrinsic ground clamp and flyback
diodes are also provided.
The voice-coil system incorporates a MOS H-bridge driver, sense
amplifier, error amplifier, and programmable retract circuitry.
The spindle and voice-coil control functions are supplemented by
an E
NERGY
M
ANAGER
, which efficiently channels available spindle
BEMF to protect the heads and the data disk during system power
supply failure. Active regeneration of spindle BEMF provides nearly
lossless conversion of spindle BEMF into supply voltage to operate the
voice coil motor for parking the heads. A dc-to-dc converter provides for
full power MOS r
DS(on)
performance at minimum supply voltages. In
addition, the E
NERGY
M
ANAGER
provides several energy-saving sleep
modes and latched fault states for undervoltage and serial port com-
manded fault.
The A8983CJT is supplied in a 64-lead low-profile quad flatpack for
surface-mount applications.
FEATURES
Voice Coil Motor Driver:
I
Low r
DS(on)
MOS Outputs
I
Zero Deadband
I
Externally Determined Transconductance, with Hi/Lo
Configuration Switched via Serial Port
I
Current Sensing with External Series Sense Resistor
I
Serial Port Programmable Actuator Retract Circuitry
Spindle Motor Controller/Driver:
I
Low r
DS(on)
MOS Outputs
Output current rating may be restricted to a value
determined by system concerns and factors.
These include: system duty cycle and timing,
ambient temperature, and use of any heatsinking
ABSOLUTE MAXIMUM RATINGS
at T
A
= +25
°
C
Load Supply Voltage, V
CC(PWR)
............
7.0 V
Spindle Output Current, I
OUT(S)
..........
±
1.6 A
Voice-Coil Output Current, I
OUT(A)
......
±
0.9 A
D
2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 89830003 | 功能描述:MOTOR 898300 - 48V 3600RPM 制造商:crouzet 系列:- 零件状态:在售 类型:- 功能:- 电机类型:- 电压 - 额定:- RPM:- 扭矩 - 额定值 (oz-in / mNm):- 功率 - 额定值:- 编码器类型:- 大小/尺寸:- 直径 - 轴:- 长度 - 轴和轴承:- 安装孔间距:- 端子类型:- 特性:- 齿轮减速比:- 扭矩 - 瞬时最大值?(oz-in / mNm):- 工作温度:- 认可:- 重量:- 标准包装:3 |
| 89830004 | 功能描述:MOTOR 898300 - 90V 3600RPM 制造商:crouzet 系列:- 零件状态:在售 类型:- 功能:- 电机类型:- 电压 - 额定:- RPM:- 扭矩 - 额定值 (oz-in / mNm):- 功率 - 额定值:- 编码器类型:- 大小/尺寸:- 直径 - 轴:- 长度 - 轴和轴承:- 安装孔间距:- 端子类型:- 特性:- 齿轮减速比:- 扭矩 - 瞬时最大值?(oz-in / mNm):- 工作温度:- 认可:- 重量:- 标准包装:3 |
| 89830005 | 功能描述:MOTOR 898300 - 120V 3600RPM 制造商:crouzet 系列:- 零件状态:在售 类型:- 功能:- 电机类型:- 电压 - 额定:- RPM:- 扭矩 - 额定值 (oz-in / mNm):- 功率 - 额定值:- 编码器类型:- 大小/尺寸:- 直径 - 轴:- 长度 - 轴和轴承:- 安装孔间距:- 端子类型:- 特性:- 齿轮减速比:- 扭矩 - 瞬时最大值?(oz-in / mNm):- 工作温度:- 认可:- 重量:- 标准包装:3 |
| 89830008 | 功能描述:US SHAFT - MOTOR 898300 - 48V 36 制造商:crouzet 系列:- 零件状态:在售 类型:- 功能:- 电机类型:- 电压 - 额定:- RPM:- 扭矩 - 额定值 (oz-in / mNm):- 功率 - 额定值:- 编码器类型:- 大小/尺寸:- 直径 - 轴:- 长度 - 轴和轴承:- 安装孔间距:- 端子类型:- 特性:- 齿轮减速比:- 扭矩 - 瞬时最大值?(oz-in / mNm):- 工作温度:- 认可:- 重量:- 标准包装:3 |
| 89830009 | 功能描述:US SHAFT - MOTOR 898300 - 90V 36 制造商:crouzet 系列:- 零件状态:在售 类型:- 功能:- 电机类型:- 电压 - 额定:- RPM:- 扭矩 - 额定值 (oz-in / mNm):- 功率 - 额定值:- 编码器类型:- 大小/尺寸:- 直径 - 轴:- 长度 - 轴和轴承:- 安装孔间距:- 端子类型:- 特性:- 齿轮减速比:- 扭矩 - 瞬时最大值?(oz-in / mNm):- 工作温度:- 认可:- 重量:- 标准包装:3 |
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