TCA965B
TCA965B Datasheet
TCA 965 B
| Part | Datasheet |
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TCA965B |
TCA965B (pdf) |
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| Window Discriminator Pb-free lead plating RoHS compliant Features q Two window settings direct setting of lower and upper edge voltage window edges indirect setting by window center voltage and half window width q Adjustable hysteresis q Digital outputs with open collectors for currents up to 50 mA q Adjustable reference voltage VStab TCA 965 B Bipolar IC PG-DIP-14-1 Type s TCA 965 B s Not for new design Ordering Code Q67000-A8338 Package PG-DIP-14-1 The window discriminator compares an input voltage to a defined voltage window. The digital outputs show whether the input voltage is below, within or above this window. The TCA 965 B window discriminator is especially suitable as a tracking or compensating controller with a dead band in control engineering and for the selection of DC voltages within a certain tolerance of the required setpoint value in measurement engineering. When it is used as a Schmitt trigger, switching frequencies up to a typical value of 50 kHz are possible. Semiconductor Group 2005-02-17 TCA 965 B Functional Description Amplifier Amp 3 increases the voltage of the reference source R to VStab = 2 x VREF. The amplification factor can be altered by external wiring. With direct setting of the window, the input voltage appears on amplifier Amp 1 V8 , the upper edge voltage on comparator K2 V6 and the lower edge voltage on comparator K1 V7 . With indirect setting of the window, the input voltage appears on inputs V6 and V7, while the center voltage is connected to amplifier A1 V8 . The voltage applied to the input V9 of amplifier Amp 2 is subtracted symmetrically from the output voltage of amplifier Amp 1 and added. The comparators switch with hysteresis. The logic gates have open-collector outputs. If the inhibit input A or B is connected to ground, output A or B will always be high. Amp 1 Amp 2 6 V=1 + VS 11 VREF 1 20 k 5 20 k +Amp 3 Outputs A, B, C, D are open-collector Block Diagram Semiconductor Group VStab A Inhibit A C D Inhibit B IEB00091 2005-02-17 TCA 965 B Pin Configuration top view TCA 965 B GND 1 A2 D3 Inhibit A 4 V REF 5 V6 6 V7 7 14 B 13 C 12 Inhibit B 11 +V S 10 V Stab 9 V9 8 V8 IEP00292 Pin Definitions and Functions Pin Function in Direct Setting Indirect Setting |
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