UC1634 Datasheet

IC型號(hào)：
UC1634
PDF描述：
Phase Locked Frequency Controller
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PDF頁(yè)數(shù)：
5頁(yè)
芯片廠家：
TI

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UC1634

UC2634

UC3634

Phase Locked Frequency Controller

FEATURES

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Precision Phase Locked Frequency Control

System

Communication Logic for 2-Phase Motors

Disable Input for Motor Inhibit

Crystal Oscillator

Programmable Reference Frequency Dividers

Phase Detector with Absolute Frequency

Steering

Digital Lock Indicator

Two High Current Op-Amps

5V Reference Output

DESCRIPTION

The UC1634 series of devices is optimized to provide precision

phase locked frequency control for two phase DC brushless mo-

tors. These devices include most of the features of the general

purpose UC1633 Phase Locked Control family and also provide

the out-of-phase commutation signals required for driving two

phase brushless motors. Only an external power booster stage

is required for a complete drive and control system.

The two commutation outputs are open collector devices that can

sink in excess of 16mA. A disable input allows the user to simul-

taneously force both of these outputs to an active low state.

Double edge logic, following the sense amplifier, doubles the ref-

erence frequency at the phase detector by responding to both

edges of the input signal at Pin 7.

BLOCK DIAGRAM

6/93

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