SAA1042V Motorola, SAA1042V Datasheet

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SAA1042V

Manufacturer Part Number
SAA1042V
Description
Stepper motor drivernal and bidirectional
Manufacturer
Motorola
Datasheet

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SAA1042V
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Stepper Motor Driver
device contains three input stages, a logic section and two output stages.
The IC is contained in a 16 pin dual–in–line heat tab plastic package for
improved heatsinking capability. The center four ground pins are connected
to the copper alloy heat tab and improve thermal conduction from the die to
the circuit board.
MOTOROLA ANALOG IC DEVICE DATA
Optimum Efficiency
The SAA1042 drives a two–phase stepper motor in the bipolar mode. The
Drive Stages Designed for Motors: 6.0 V and 12 V: SAA1042V
500 mA/Coil Drive Capability
Built–In Clamp Diodes for Overvoltage Suppression
Wide Logic Supply Voltage Range
Accepts Commands for CW/CCW and Half/Full Step Operation
Inputs Compatible with Popular Logic Families: MOS, TTL, DTL
Set Input Defined Output State
Drive Stage Bias Adaptable to Motor Power Dissipation for
10
8
7
CW/CCW
Half Step
Clock
Full/
Figure 1. Representative Block Diagram
Logic
V CC
Gnd
11
9
V M
R B
Driver
Driver
A
15
6
Set
Driver Bias
V Z
2
VD
16
14
1
3
L1
L2
L3
L4
M
SAA1042V
Motorola, Inc. 1996
Device
Driver Bias
Full/Half
Gnd
Clock
Step
Set/
ORDERING INFORMATION
VD
L2
L1
STEPPER MOTOR
SAA1042
SEMICONDUCTOR
16
TECHNICAL DATA
Order this document by SAA1042/D
Temperature Range
T J = – 30 to +125 C
PLASTIC PACKAGE
1
2
3
4
5
6
7
8
PIN CONNECTIONS
1
DRIVER
CASE 648C
Operating
V SUFFIX
(Top View)
16
15
14
13
12
11
10
9
Plastic DIP
L3
VM
L4
V CC
CW/CCW
Gnd
Package
Gnd
Rev 2
1

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SAA1042V Summary of contents

Page 1

... The center four ground pins are connected to the copper alloy heat tab and improve thermal conduction from the die to the circuit board. Drive Stages Designed for Motors: 6.0 V and 12 V: SAA1042V 500 mA/Coil Drive Capability Built–In Clamp Diodes for Overvoltage Suppression ...

Page 2

... I out = 500 mA I out = 50 mA Output Leakage Current, Pin 6 = Open ( clamp max ) Clamp Diode Forward Voltage (Drop 500 mA) Clock Frequency Clock Pulse Width Set Pulse Width Set Control Voltage, High State Set Control Voltage, Low State 2 SAA1042 Symbol SAA1042V Unit V clamp 6 500 mA ...

Page 3

... V clamp – – where clamp diodes forward voltage drop (see Figure 4) V clamp : 20 V for SAA1042V V clamp : SAA1042AV Pins 2 and 15 can be linked, in this case Set/Bias Input — (Pin 6) This input has two functions: 1) The resistor R B adapts the drivers to the motor current. ...

Page 4

... MOTOR CURRENT/COIL (mA) Figure 5. Power Dissipation versus Logic Supply Voltage 500 300 200 100 5.0 4.0 5 SUPPLY VOLTAGE (V) Figure 6. Timing Diagram Don’t Care High Output Impedance MOTOROLA ANALOG IC DEVICE DATA 50 70 100 200 300 400 500 ...

Page 5

... Selectable Step Rates with the Time Base Derived from the Line Frequency MC14046B 220 k 15 Phase 220 V Comp 0 8.2 F Figure 8. Thermal Resistance and Maximum Power Dissipation versus P.C.B. Copper Length 100 MOTOROLA ANALOG IC DEVICE DATA SAA1042 Figure 7. Typical Application VCO 4.7 nF 120 1400 Hz Printed circuit board heatsink example 2 ...

Page 6

... Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “ ...

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