L290

LINEAR INTEGRATED CIRCUIT TACHOMETER CONVERTER The L290, a monolithic LSI circuit in a 16-lead dual in-line plastic package, is intended for use with the L291 and L292 which together form 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 following functions: - tacho voltage generator (FIV converter) reference voltage generator - position pulse generator. ABSOLUTE MAXIMUM RATINGS vs Supply voltage VI (FTA, FTB, FTF) Input signals Ptot Total power dissipation Tamb = 70°C Tstg' TJ Storage and junction temperature ± 15 ±7 1 -40 to +150 V V W °C ORDERING NUMBER: L290 B MECHANICAL DATA Dimensions in mm 6182 98 CONNECTION DIAGRAM (top view) FTB VAB Vre-t TACHO 4 'V s Vbias. 6 VMB VMA 16 FTA 15 VAA 14 STA 13 srB 12 FTF 11 GND 10 STF 9 -Vs 5 - lo 159 BLOCK DIAGRAM , 6 FTA FTS 11.. STA 13 STS Vbias 11 GNO i "VS: ...