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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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X9268 датащи(PDF) 3 Page - Renesas Technology Corp |
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X9268 датащи(HTML) 3 Page - Renesas Technology Corp |
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3 / 22 page  X9268 FN8172 Rev.4.00 Page 3 of 22 August 29, 2006 DETAILED FUNCTIONAL DIAGRAM CIRCUIT LEVEL APPLICATIONS • Vary the gain of a voltage amplifier • Provide programmable dc reference voltages for com- parators and detectors • Control the volume in audio circuits • Trim out the offset voltage error in a voltage amplifier circuit • Set the output voltage of a voltage regulator • Trim the resistance in Wheatstone bridge circuits • Control the gain, characteristic frequency and Q-factor in filter circuits • Set the scale factor and zero point in sensor signal conditioning circuits • Vary the frequency and duty cycle of timer ICs • Vary the dc biasing of a pin diode attenuator in RF cir- cuits • Provide a control variable (I, V, or R) in feedback circuits SYSTEM LEVEL APPLICATIONS • Adjust the contrast in LCD displays • Control the power level of LED transmitters in communication systems • Set and regulate the DC biasing point in an RF power amplifier in wireless systems • Control the gain in audio and home entertainment sys- tems • Provide the variable DC bias for tuners in RF wireless systems • Set the operating points in temperature control systems • Control the operating point for sensors in industrial systems • Trim offset and gain errors in artificial intelligent systems INTERFACE AND CONTROL CIRCUITRY A0 SCL SDA A1 A2 WP A3 VCC VSS R0 R1 R2 R3 Wiper Counter Register (WCR) Resistor Array Pot 1 R0 R1 R2 R3 Wiper Counter Register (WCR) Data 8 Pot 0 Power-on Recall Power-on Recall RH0 RL0RW0 RH1 RL1 RW1 256-taps 50k and 100k V+ V- |
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