Datasheet LT2178, LT2179 (Analog Devices) - 8

LT2178/LT2179
TYPICAL PERFORMANCE CHARACTERISTICS Power Supply Rejection Ratio vs Frequency Closed Loop Output Impedance
120 TA = 25°C 10k VS = 5V, 0V 100 IL = 0 1k 80 POSITIVE SUPPLY ACL = 100 60 NEGATIVE 100 SUPPLY PSRR (dB) ACL = 1 40 10 ACL = 10 OUTPUT IMPEDANCE (Ω) 20 TA = 25°C 1 VS = p2.5V + 1VP-P SINE WAVE 0 0.1 1 10 100 1k 10k 100k 10 100 1k 10k 100k OPERATING FREQUENCY (Hz) FREQUENCY (Hz) 21789 G19 21789 G20
SIMPLIFIED SCHEMATIC 1/2 LT2178 1/4 LT2179
V+ 33k 11.5k 6.4k 12.5k 10k 10k 2.2k 5.6k 1.3k Q54 Q53 1 1 2 Q6 Q16 Q14 Q15 Q32 Q5 Q52 Q47 Q37 Q46 Q29 Q3 Q30 V– Q4 Q24 1 3 Q40 Q25 3k 8.6k Q35 Q41 Q12 C1 V+ 50pF Q26 4 C4 2.9k Q11 4pF 30Ω 1 OUT Q44 C5 Q27 2.5pF Q1 600Ω 150k Q21 IN– Q31 C3 40pF J1 Q2 Q28 Q18 Q36 Q33 600Ω Q48 Q22 IN+ V+ Q19 Q42 Q50 Q49 Q39 Q9 Q23 Q10 Q17 V+ 9.1k 700k C2 Q7 Q8 Q45 Q51 Q20 175pF Q55 2A 10k Q34 Q38 Q43 2A 6.2k 6.2k 3k 30Ω 5.35k 700k 21789 SS V– 21789fc 8