ICL7650S Intersil Corporation, ICL7650S Datasheet
ICL7650S
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ICL7650S Summary of contents
Page 1
... The clock oscillator and all the other control circuitry is entirely self-contained. However the 14 lead version includes a provision for the use of an external clock, if required for a particular application. In addition, the ICL7650S is internally compensated for unity-gain operation. Pinouts ICL7650S (PDIP, SOIC) TOP VIEW ...
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... Functional Diagram INT/EXT A A EXT CLK IN OSC . B C CLK OUT INTERNAL BIAS +IN + MAIN - - NULL CAP RETURN C EXTA 2 ICL7650S P OUTPUT N CLAMP C EXTB EXT CLK CLK OUT ...
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... Operating Conditions Temperature Range ICL7650SC CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. ...
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... Detailed Description AMPLIFIER The functional diagram shows the major elements of the ICL7650S. There are two amplifiers, the main amplifier, and the nulling amplifier. Both have offset-null capability. The main amplifier is connected continuously from the input to the output, while the nulling amplifier, under the control of the chopping oscillator and clock circuit, alternately nulls itself and the main amplifier ...
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... Extra care must be taken in the assembly of printed circuit boards to take full advantage of the low input currents of the ICL7650S. Boards must be thoroughly cleaned with TCE or alcohol and blown dry with compressed air. After cleaning, the boards should be coated with epoxy or silicone rubber to prevent contamination ...
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... FIGURE 1. CONNECTION OF INPUT GUARDS as shown in Figure 4, to enable the full output capabilities of the LM741 (or any other standard device combined with the input capabilities of the ICL7650S. The pair form a composite device, so loop gain stability, when the feedback network is added, should be watched carefully. ...
Page 7
... The built-in temperature compensation and convenience features of the ICL8048 can be extended to a voltage-input dynamic range of close to 6 decades by using the ICL7650S to offset-null the ICL8048, as shown in Figure 6. The same concept can also be used with such devices as the HA2500 ...
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... FIGURE 9. MAXIMUM OUTPUT CURRENT vs SUPPLY VOLTAGE 100 0.1µF BROADBAND NOISE (A = 1000 0 TEMPERATURE ( FIGURE 11. CLOCK RIPPLE REFERRED TO THE INPUT vs TEMPERATURE 8 ICL7650S FIGURE 8. SUPPLY CURRENT vs AMBIENT TEMPERATURE FIGURE 10. COMMON MODE INPUT VOLTAGE RANGE 1.0µ 100 125 150 ...
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... TOTAL SUPPLY VOLTAGE (V) FIGURE 13. INPUT OFFSET VOLTAGE CHANGE vs SUPPLY VOLTAGE TIME (ms) FIGURE 15. OUTPUT WITH ZERO INPUT; GAIN = 1000; BALANCED SOURCE IMPEDANCE = 10kΩ 9 ICL7650S (Continued FIGURE 14. INPUT OFFSET VOLTAGE vs CHOPPING 160 140 120 100 ...
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... CLOCK OUT HIGH - 0.5 NOTE: TIME (µS) The two different responses correspond to the two phases of the clock. FIGURE 19. VOLTAGE FOLLOWER LARGE SIGNAL PULSE RESPONSE (NOTE) FIGURE 21. P-CHANNEL CLAMP CURRENT vs OUTPUT VOLTAGE 10 ICL7650S (Continued 10kΩ 0.1µF EXT ...
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... B1 maximum dimensions do not include dambar protrusions. Dambar protrusions shall not exceed 0.010 inch (0.25mm the maximum number of terminal positions. 10. Corner leads (1, N, N/2 and N for E8.3, E16.3, E18.3, E28.3, E42.6 will have a B1 dimension of 0.030 - 0.045 inch (0.76 - 1.14mm). 11 ICL7650S E8.3 8 LEAD DUAL-IN-LINE PLASTIC PACKAGE SYMBOL ...
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... B1 maximum dimensions do not include dambar protrusions. Dambar protrusions shall not exceed 0.010 inch (0.25mm the maximum number of terminal positions. 10. Corner leads (1, N, N/2 and N for E8.3, E16.3, E18.3, E28.3, E42.6 will have a B1 dimension of 0.030 - 0.045 inch (0.76 - 1.14mm). 12 ICL7650S E14.3 14 LEAD DUAL-IN-LINE PLASTIC PACKAGE SYMBOL ...
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... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 13 ICL7650S M8.15 (JEDEC MS-012-AA ISSUE C) 8 LEAD NARROW BODY SMALL OUTLINE PLASTIC ...