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X9421WS16I Datasheet(PDF) 3 Page - Intersil Corporation |
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X9421WS16I Datasheet(HTML) 3 Page - Intersil Corporation |
3 / 21 page 3 FN8196.1 September 23, 2005 DETAILED FUNCTIONAL DIAGRAM CIRCUIT LEVEL APPLICATIONS • Vary the gain of a voltage amplifier • Provide programmable dc reference voltages for comparators 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 circuits • 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 systems • 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 WIPER COUNTER REGISTER (WCR) RH/VH RL/VL DATA RW/VW INTERFACE AND CONTROL CIRCUITRY VCC VSS CS SCK A0 SO SI HOLD WP Control 64--taps 10k Ω Power-on Recall DR0 DR1 DR2 DR3 X9421 |
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