поискавой системы для электроныых деталей |
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CA5130E датащи(PDF) 10 Page - Intersil Corporation |
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CA5130E датащи(HTML) 10 Page - Intersil Corporation |
10 / 19 page 10 The circuit uses an R/2R voltage ladder network, with the output potential obtained directly by terminating the ladder arms at either the positive or the negative power supply terminal. Each CD4007A contains three “inverters”, each “inverter” functioning as a single pole double throw switch to terminate an arm of the R/2R network at either the positive or negative power supply terminal. The resistor ladder is an assembly of one percent tolerance metal oxide film resistors. The five arms requiring the highest accuracy are assembled with series and parallel combinations of 806,000 Ω resistors from the same manufacturing lot. A single 15V supply provides a positive bus for the CA5130 follower amplifier and feeds the CA3085 voltage regulator. A “scale adjust” function is provided by the regulator output control, set to a nominal 10V level in this system. The line voltage regulation (approximately 0.2%) permits a 9-bit accuracy to be maintained with variations of several volts in the supply. The flexibility afforded by the CMOS building blocks simplifies the design of DAC systems tailored to particular needs. Single Supply, Absolute Value, Ideal Full Wave Rectifier The absolute value circuit using the CA5130 is shown in Figure 6. During positive excursions, the input signal is fed through the feedback network directly to the output. Simultaneously, the positive excursion of the input signal also drives the output terminal (No. 6) of the inverting amplifier in a negative going excursion such that the 1N914 diode effectively disconnects the amplifier from the signal path. During a negative going excursion of the input signal, the CA5130 functions as a normal inverting amplifier with a gain equal to -R2/R1. When the equality of the two equations shown in Figure 6 is satisfied, the full wave output is symmetrical. FIGURE 4A. OUTPUT WAVEFORM WITH INPUT SIGNAL RAMPING FIGURE 4B. OUTPUT WAVEFORM WITH GROUND REFERENCE SINE WAVE INPUT FIGURE 4. SINGLE SUPPLY VOLTAGE FOLLOWER WITH ASSOCIATED WAVEFORMS. (e.g., FOR USE IN SINGLE SUPPLY D/A CONVERTER; SEE FIGURE 9 IN AN6080) 3 2 8 1 4 7 6 + - 10k Ω 56pF OFFSET +15V 0.01 µF 2k Ω 0.1 µF 5 ADJUST 100k Ω 0V 2V/Div., 500 µs/Div. 0V 0V Top Trace: Output = 5V/Div., 200 µs/Div. Bottom Trace: Input = 5V/Div., 200 µs/Div. CA5130, CA5130A |
Аналогичный номер детали - CA5130E |
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Аналогичное описание - CA5130E |
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