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LT1797 Datasheet(PDF) 9 Page - Linear Technology |
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LT1797 Datasheet(HTML) 9 Page - Linear Technology |
9 / 14 page LT1797 9 1797fb APPLICATIONS INFORMATION Distortion There are two main contributors to distortion in op amps: output crossover distortion as the output transitions from sourcing to sinking current and distortion caused by non- linear common mode rejection. If the op amp is operating in the inverting mode, there is no common mode induced distortion. If the op amp is operating in the PNP input stage (input is not within 1.3V of V+), the CMRR is very good, typically 96dB. When the LT1797 switches between input stages there is significant nonlinearity in the CMRR. Lower load resistance increases the output crossover distortion, but has no effect on the input stage transition distortion. For lowest distortion the LT1797 should be operated single supply, with the output always sourcing current and with the input voltage swing between ground and (V+ – 1.3V). See the Typical Performance Characteristic curves. 1797 F01 Q18 Q1 Q3 Q4 QB1 Q7 Q11 Q13 Q9 Q6 Q2 Q12 Q8 Q14 Q10 Q5 Q17 Q15 Q19 Q20 Q16 R1 R3 R4 R7 R8 R5 R6 R2 D1 D2 –IN +IN BIAS I1 OUT +1 +1 CM C1 C2 I3 I2 I4 I5 I6 I7 1/2 SUPPLY Figure 1. Simplified Schematic |
Similar Part No. - LT1797_15 |
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Similar Description - LT1797_15 |
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