A8980CJT中文资料PDF规格书
A8980CJT规格书详情
The A8980CJT provides complete drive, management, and control of the voice-coil and spindle motor power actuation subsystems used in hard disk drives. Extensive programmable control features and system diagnostics are provided via a serial interface under the direction of an external microcontroller. The large-scale integration and use of advanced DABiC™ (digital/analog-BiCMOS) merged technologies results in minimum power dissipation, minimum operating voltage requirements, and minimum external components.
The spindle drive function incorporates a three-phase MOS power driver and a back-EMF sensing motor commutation scheme. Internal logic and analog circuitry provide complete start-up and µC-assisted run modes without the need for snubbers or other external components. Additional headroom is achieved by a proprietary circuit, which eliminates the need for an external current-sense resistor. Intrinsic ground clamp and flyback diodes are also provided.
FEATURES
Voice Coil Motor Driver:
■ Low rDS(on) MOS Outputs
■ Lossless Current Sensing
■ Zero Deadband
■ User-Adjustable Transconductance Gain
■ Retract Circuitry Functional to 0 V
Spindle Motor Controller/Driver:
■ Low rDS(on) MOS Outputs
■ Back-EMF Circuitry Eliminates Hall-Effect Sensors
■ Programmable Slew Rate Eliminates Snubbers
■ Lossless Current Sensing
■ Improved Speed Disturbance Performance
■ Dynamic Braking with Delay
■ Active Braking
Servo Compensator/Notch:
■ Over-Velocity Fault Circuitry
■ 12-Bit Servo-Demand DAC
■ Programmable Complex Pole Low-pass-Filter
■ Programmable Notch Frequency, Depth, and Damping
Energy Manager:
■ 3.0 V to 5.5 V Operation
■ Independent Power-Down (Sleep) Modes for all Functional Blocks
■ Efficient Synchronous Rectification Supplies Power During Blackout
■ Thermal Fault Shutdown Circuitry
■ Trimmed Bandgap Voltage Reference
■ Smart DAC Reference Generator
■ Programmable Voltage Reference for Relative Ground
■ Over-Velocity Fault Circuitry
■ Supply Under-Voltage Monitor with Adjustable Trip Point
■ System Diagnostics Data Out
■ Power-On Reset Generator
产品属性
- 型号:
A8980CJT
- 制造商:
ALLEGRO
- 制造商全称:
Allegro MicroSystems
- 功能描述:
SUPERSERVO SPINDLE & VOICE-COIL ACTUATION MANAGER/DRIVER
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
ALLEGRO/雅丽高 |
22 |
QFP64 |
15000 |
3月31原装,微信报价 |
询价 | ||
ALLEGRO/雅丽高 |
22+ |
QFP64 |
30000 |
原装正品 |
询价 | ||
ALLEGRO/美国埃戈罗 |
2022 |
QFP64 |
80000 |
原装现货,OEM渠道,欢迎咨询 |
询价 | ||
ALLEGRO |
22+ |
QFP64 |
25000 |
原装现货,价格优惠,假一罚十 |
询价 | ||
Allegro |
QFP |
75 |
询价 | ||||
ALLEGRO/雅丽高 |
22+ |
QFP64 |
6000 |
进口原装 假一罚十 现货 |
询价 | ||
ALLEGRO |
21+ |
QFP64 |
50000 |
全新原装正品现货,支持订货 |
询价 | ||
ALLE |
2339+ |
QFP |
5650 |
公司原厂原装现货假一罚十!特价出售!强势库存! |
询价 | ||
ALLE |
2021+ |
QFP |
6540 |
原装现货/欢迎来电咨询 |
询价 | ||
ALLEGRO/雅丽高 |
22+ |
SOT-23 |
25833 |
郑重承诺只做原装进口货 |
询价 |