Glen Brisebois and Joseph Petrofsky ® ∆Σ * ∆Σ * 0.1µF X7R 2.5V 2.7V/3V CMOS OFF ON 5V VDD DC + AC INPUTS (1VPEAK DIFFERENTIAL) 06/02/288 VOUT IN2 OUT RTN OFF ON CAVE 1µF DC OUTPUT AC INPUT (1VPEAK) DN288 F01a IN1 VOUT IN2 OUT RTN VSS –2.5V ≤–2V EN VDD LTC1966 CC 0.1µF VSS GND EN –5V ≥2V EN VDD LTC1966 IN1 2.7V GND DN288 F01b CAVE 1µF DC OUTPUT DC + AC INPUT (1VPEAK) LTC1966 IN1 DC CAVE OUTPUT 1µF VOUT IN2 OUT RTN VSS GND –2.5V –2.5V DN288 F01c LINEARITY ERROR (VOUT mV DC – VIN mV ACRMS) 0.2 Dα LTC1966, ∆Σ 0 VIN VOUT ∆-Σ REF –0.2 VIN ±1 –0.4 LPF –0.6 VOUT CONVENTIONAL LOG/ANTILOG DN288 F03 –0.8 60Hz SINEWAVES –1.0 0 50 100 150 200 250 300 350 400 450 500 VIN (mV ACRMS) DN288 F02 ∆Σ ∆Σ • ∆Σ ∆Σ ∆Σ dn288f 0602 6K • PRINTED IN JAPAN LINEAR TECHNOLOGY CORPORATION 2002