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ICL7660ACPA Datasheet(PDF) 7 Page - Intersil Corporation |
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ICL7660ACPA Datasheet(HTML) 7 Page - Intersil Corporation |
7 / 13 page 7 FN3179.7 January 23, 2013 FIGURE 11. OUTPUT SOURCE RESISTANCE AS A FUNCTION OF OSCILLATOR FREQUENCY NOTE: 14. These curves include, in the supply current, that current fed directly into the load RL from the V+ (see Figure 12). Thus, approximately half the supply current goes directly to the positive side of the load, and the other half, through the ICL7660S and ICL7660A, goes to the negative side of the load. Ideally, VOUT ∼ 2VIN, IS ∼ 2IL, so VIN x IS ∼ VOUT x IL. Typical Performance Curves See Figure 12, “ICL7660S Test Circuit” on page 7) and Figure 13 “ICL7660A Test Circuit” on page 7 (Continued) 400 300 200 100 0 100 1k 10k 100k OSCILLATOR FREQUENCY (Hz) V+ = 5V TA = +25°C I = 10mA C1 = C2 = 10mF C1 = C2 = 1mF C1 = C2 = 100mF 1 2 3 4 8 7 6 5 + - C1 10µF IS V+ (+5V) IL RL -VOUT C2 10µF ICL7660S V+ + - NOTE: For large values of COSC (>1000pF), the values of C1 and C2 should be increased to 100µF. FIGURE 12. ICL7660S TEST CIRCUIT NOTE: For large values of COSC (>1000pF) the values of C1 and C2 should be increased to 100 μF. FIGURE 13. ICL7660A TEST CIRCUIT 1 2 3 4 8 7 6 5 + - C1 10µF IS V+ (+5V) IL RL -VOUT C2 10µF ICL7660A COSC + - (NOTE) ICL7660S, ICL7660A |
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