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CA3193 Datasheet(PDF) 7 Page - Intersil Corporation |
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CA3193 Datasheet(HTML) 7 Page - Intersil Corporation |
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7 / 11 page  66 Typical Applications FIGURE 7. TYPICAL TWO OP AMP BRIDGE-TYPE DIFFERENTIAL AMPLIFIER FIGURE 8. DIFFERENTIAL AMPLIFIER (SIMPLE SUBTRACTER) USING CA3193 FIGURE 9. USING CA3193 AS A BILATERAL CURRENT SOURCE FIGURE 10. TYPICAL SUMMING AMPLIFIER APPLICATION - + +15V R1 7 6 2 3 4 -15V 1K R2 9K R3 1K R4 9K + - +15V 7 6 3 2 4 -15V VOUT b Vb R R + ∆R R R V+ a Va V OUT V – a R 2 R 1 ------- 1 + R 4 R 3 ------- V b R 4 R 3 ------- 1 + + = For Ideal Resistors with R 1 R 2 ------- R 3 R 4 ------- = V OUT V b V a R 4 R 3 ------- 1 + – = A V OUT V b V a – -------------------- R 4 R 3 ------- 1 + == FOR VALUES ABOVE VOUT = (Vb - Va) (IO) CA3193 CA3193 + - R2 +15V VOUT 7 6 3 2 4 -15V V1 20K CA3193 RL V2 R1 10K R3 10K R4 20K ALL RESISTANCE VALUES ARE IN OHMS. V OUT V 2 R 4 R 3 R 4 + --------------------- R 1 R 2 + R 1 --------------------- V 1 R 2 R 1 ------- – = If R 4 R 2, R3 R 1 and R 2 R 1 ------- = R 4 R 3 ------- == THEN V OUT V 2 V 1 – () R 2 R 1 ------- = For values above VOUT = 2(V2 - V1): If AV is To be made 1 and if R1 = R3 = R4 = R with R2 = 0.999R (0.1% mismatch in R2) Then VOCM = 0.0005 VIN or CMRR = 66dB Thus, the CMRR of this circuit is limited by the matching or mismatching of this network rather than the amplifier. + - R2 +15V 7 6 3 2 4 -15V 1M CA3193 R5 R3 2M Ω 1K R1 2M R4 1M RS V RL (0 Ω TO 3.0kΩ) WITH V = 1V ALL RESISTORS ARE 1% IF R1 = R3 AND R2 ≈ R4 + R5, THEN IL IS INDEPENDENT OF VARIATIONS IN RL FOR RL VALUES OF 0Ω TO 3kΩ WITH V = 1V I L VR 4 R 3 R5 --------------- V1M () 2M () 1K () -------------------------- V 2K ------- 500 µA == = = IL + - RF +15V 7 6 3 2 4 -15V V3 20K CA3193 RL V2 R1 10K R4 2.8K R2 10K R3 10K V1 V OUT R F R 1 ------- V 1 R F R 2 ------- V 2 R F R 3 ------- V 3 ++ – = VOUT = - (2V1+ 2V2 + 2V3) ALL RESISTANCE VALUES ARE IN OHMS. CA3193, CA3193A |
Similar Part No. - CA3193 |
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Similar Description - CA3193 |
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