Description
The A3986 is a dual full-bridge gate driver with integrated microstepping translator suitable for driving a wide range of higher power industrial bipolar 2-phase stepper motors (typically 30 to 500 W). Motor power is provided by external N-channel power MOSFETs at supply voltages from 12 to 50 V.
This device contains two sinusoidal DACs that generate the reference voltage for two separate fixed-off-time PWM current controllers. These provide current regulation for external power MOSFET full-bridges.
Motor stepping is controlled by a two-wire step and direction interface, providing complete microstepping control at full-,half-, quarter-, and sixteenth-step resolutions. The fixed-off time regulator has the ability to operate in slow-, mixed-, or fast-decay modes, which results in reduced audible motor noise, increased step accuracy, and reduced power dissipation.
The translator is the key to the easy implementation of this IC. Simply inputting one pulse on the STEP input drives the motor one step (full, half, quarter, or sixteenth depending on the microstep select input). There are no phase-sequence tables, high frequency control lines, or complex interfaces to program. This reduces the need for a complex microcontroller.

Features and Benefits
*2-wire step and direction interface
*Dual full-bridge gate drive for N-channel MOSFETs
*Operation over 12 to 50 V supply voltage range
*Synchronous rectification
*Cross-conduction protection
*Adjustable mixed decay
*Integrated sinusoidal DAC current reference
*Fixed off-time PWM current control

A3986SLD-T, A3986SLDTR-T

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DESCRIPTION
The AZ10/100ELT22 is a dual CMOS/TTL to differential PECL translator.
Because PECL (Positive ECL) levels are used, only VCC and ground are required.
The small outline packaging and the low skew, dual gate design of the ELT22 makes it ideal for applications that require the translation of a clock and a data signal.
The ELT22 is available in both PECL standards: the 10ELT is compatible with PECL 10K logic levels while the 100ELT is compatible with PECL 100K logic levels.
NOTE: Specifications in PECL tables are valid when thermal equilibrium is established.

FEATURES
* Green / RoHS Compliant / Lead (Pb) Free package available
* 0.5ns Typical Propagation Delay
* <100ps Typical Output to Output Skew
* Differential PECL Outputs
* Flow Through Pinouts
* Operating Range of 3.0V to 5.5V
* Direct Replacement for ON Semiconductor MC10ELT22, MC100ELT22, MC100LVELT22 & Micrel SY89322V
* IBIS Model Files Available on Arizona Microtek Website

AZ100ELT22
AZ10ELT22D
AZ100ELT22D
AZ100ELT22DG
AZ100ELT22T
AZ100ELT22TG

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