L290 STMICROELECTRONICS | Alldatasheet

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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 complete3-chip DC motor positioning systemfor 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 March 1993 Symbol Parameter Value Unit Vs Supply Voltage ± 15 V Vi(FTA, FTB, FTF) Input Signals ± 7V Ptot Total Power Dissipation (Tamb =7 0°C) 1 W Tstg,Tj Storage and Junction Temperature - 40 to + 150 °C ABSOLUTE MAXIMUM RATING SYSTEM BLOCK DIAGRAM DIP-16 Plastic (0.25) ORDER CODE : L290B

CONNECTION DIAGRAM (top view) L290

Symbol Parameter Value Unit R th-j-amb Thermal resistance junction-case Max 80 °C/W THERMAL DATA Symbol Parameter Test conditions Min. Typ. Max. Unit Vs Supply Voltage ± 10 ± 15 V Id Quiescent Drain Current V s = ± 15 V 13 20 mA INPUT AMPLIFIERS (A1 and A2) FTA, FTB Input Signal from Encoder (pin 1, 16) fmax = 20 KHz ± 0.4 ± 0.6 V p Vos Output Offset Voltage (pin 2, 15) FTA= FTB = 0 V ± 55 mV Ib Input Bias Current (pin 1, 16) 0.15 µA G v Voltage Gain f = 10 KHz FTA= FTB = ± 0.6 Vp 22 23 24 dB V0 Output Voltage Swing (pin 2, 15) FTA= FTB = ± 1Vp ± 9.5 V ELECTRICAL CHARACTERISTICS (Refer to the test circuit, S in (A), Vs = ± 12 V, Tamb =2 5°C unless otherwise specified) TEST CIRCUIT L290

Symbol Parameter Test conditions Min. Typ. Max. Unit COMPARATORS WITH HYSTERESIS (C1,C2, and C3) VTHP (°) Positive Threshold Voltage (pin 2, 12, 15) C 1 and C2 550 850 mV C 3 700 900 mV VTHN (° °) Negative Threshold Voltage (pin 2, 12, 15) C 1 and C2 55 175 mV C 3 570 830 mV Δ FTF Threshold Hysteresis C 3 72 120 mV VL Output Voltage (low level) (pin 10, 13, 14) I0 =2m A FTA= FTB = FTF = 0 V 0.2 0.4 V Ileak (pins 10, 13, 14) FTA= FTB = 0.5 V VCE = 5 V FTF = 1 V 1 µA REFERENCE GENERATOR Vref DC Reference Voltage (pin 3) FTA= FTB = ± 0.5 Vp (*) Iref=1m A 4.5 5 5.5 V Iref Output Current (pin 3) 1.4 mA ”TACHO” AMPLIFIER (A3) Vos Output Offset Voltage (pin 4) FTA=± 15 mV FTB = 0.5V ± 80 mV Vo DC Output Voltage (pin 4) FTA= FTB = ± 0.5 Vp () V01 5.4 6 6.6 V VMA = VMB = ± 1.25 V p (*) V02 - 5.4 - 6 - 6.6 Δ V0 V01 +V 02 - 150 + 150 mV V0 Output Voltage Swing (pin 4) FTA= FTB = 0.5V 9 V Sin (B) FTA= FTB = -0.5 V - 9 VMA VMB Multiplier Input Voltage (pin 7, 8) ± 1.25 ± 1.7 V p Vbias Bias Voltage (pin 6) FTAand FTB Floating - 6.5 - 8 V ELECTRICAL CHARACTERISTICS (continued) (°) : FTA = FTB = FTF ( ° °) : FTA= FTB = FTF = Note : Phase relationship between the signals : *F T A : 0° FTB : 90° FTA : 0° FTB : - 90° VMA =9 0° VMB =0 ° * FTA : 0° FTB : 90° VMA =9 0° VMB = 180° L290

WAVEFORMS (Neglecting threshold volage level of the comparators). SYSTEM DESCRIPTION : refer to the L292 data sheet. L290

Figure 1. Complete application circuit.

DIM. mm inch a1 0.51 0.020 B 0.77 1.65 0.030 0.065 b 0.5 0.020 b1 0.25 0.010 D 20 0.787 E 8.5 0.335 e 2.54 0.100 e3 17.78 0.700 F 7.1 0.280 I 5.1 0.201 L 3.3 0.130 Z 1.27 0.050 DIP-16 PLASTIC PACKAGE MECHANICAL DATA L290

Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics.  1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thaliand - United Kingdom - U.S.A. L290