L290 Datasheet, PDF (1/8 Pages) STMicroelectronics – TACHOMETER CONVERTER

L290
TACHOMETER CONVERTER
DESCRIPTION
The L290, a monolithic LSI circuit in 16-lead inline
plastic package, is intended for user with the L291
and L292 which together from a complete 3-chip
DC motor positioning system for applications
such as carriage/daisy-wheel position control in
typewriters.
The L290/1/2 system can be directly controlled by
a microprocessor. The L290 integrates the follow-
ing functions:
- tacho voltage generator (F/V converter)
- reference voltage generator
- position pulse generator
ABSOLUTE MAXIMUM RATING
Symbol
V_s
V_i (FTA, FTB, FTF)
Ptot
T_stg, T_j
Parameter
Supply Voltage
Input Signals
Total Power Dissipation (Tamb = 70 °C)
Storage and Junction Temperature
SYSTEM BLOCK DIAGRAM
DIP-16 Plastic
(0.25)
ORDER CODE : L290B
Value
± 15
±7
1
- 40 to + 150
Unit
V
V
W
°C
March 1993
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