Datasheet LTC2057, LTC2057HV (Analog Devices) - 24

制造商Analog Devices
描述High Voltage, Low Noise Zero-Drift Operational Amplifier
页数 / 页32 / 24 — Typical applicaTions. Paralleling Choppers to Improve Noise
文件格式/大小PDF / 1.6 Mb
文件语言英语

Typical applicaTions. Paralleling Choppers to Improve Noise

Typical applicaTions Paralleling Choppers to Improve Noise

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LTC2057/LTC2057HV
Typical applicaTions Paralleling Choppers to Improve Noise
+ R5 LTC2057 – R2 R1 + R5 LTC2057 – R2 R2 AV = +1 R4 • +1 V R1 R3 IN + R1 LTC2057 VOUT – R4 + R5 LTC2057 R3 – R2 R1 + R5 LTC2057 – R2 2057 TA04 R1 DC TO 10Hz NOISE = 200nVP-P , e 11nV/√Hz n = , in = √N • 170fA/√Hz, IB < N • 200pA (MAX) √N √N WHERE N IS THE NUMBER OF PARALLELED INPUT AMPLIFIERS. FOR N = 4, DC TO 10Hz NOISE = 100nVP-P, en = 5.5nV/√Hz, in = 340fA/√Hz, IB < 800pA (MAX). R5 SHOULD BE A FEW HUNDRED OHMS TO ISOLATE AMPLIFIER OUTPUTS WITHOUT CONTRIBUTING SIGNIFICANTLY TO NOISE OR IB-INDUCED ERROR. R2 +1 >> √N FOR OUTPUT AMPLIFIER NOISE TO BE INSIGNIFICANT. R1 2057f 24 For more information www.linear.com/LTC2057 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagrams Applications Information Typical Applications Package Description Typical Application Related Parts