LTC6421-20 ABSOLUTE MAXIMUM RATINGSPIN CONFIGURATION(Note 1) Supply Voltage (V+ – V–) ...3.6V TOP VIEW Input Current (Note 2) ..±10mA A Operating Temperature Range (Note 3)..–40°C to 85°C A+ OCMA Specifi ed Temperature Range (Note 4) ..–40°C to 85°C V V ENABLEA +OUT 20 19 18 17 Storage Temperature Range ...–65°C to 150°C +INA 1 16 – OUTA Maximum Junction Temperature... 150°C – INA 2 15 V + A Output Short-Circuit Duration .. Indefi nite V – 3 21 14 V – V – V – 4 13 V – – INB 5 12 V + B +INB 6 11 – OUTB 7 8 9 10 B+V OCMBV OUTB + ENABLEB UDC PACKAGE 20-LEAD (3mm × 4mm) PLASTIC QFN TJMAX = 150°C, θJA = 43°C/W, θJC = 5°C/W EXPOSED PAD (PIN 21) IS V–, MUST BE SOLDERED TO PCB ORDER INFORMATIONLEAD FREE FINISHTAPE AND REELPART MARKING*PACKAGE DESCRIPTIONSPECIFIED TEMPERATURE RANGE LTC6421CUDC-20#PBF LTC6421CUDC-20#TRPBF LDDN 20-Lead (3mm × 4mm) Plastic QFN 0°C to 70°C LTC6421IUDC-20#PBF LTC6421IUDC-20#TRPBF LDDN 20-Lead (3mm × 4mm) Plastic QFN –40°C to 85°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based fi nish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/ SELECTOR GUIDEPART NUMBERGAINGAINZIN (DIFFERENTIAL)SINGLEDUAL(dB)(V/V)( Ω )COMMENT LTC6400-8 8 2.5 400 Lowest Distortion LTC6400-14 14 5 200 Lowest Distortion LTC6400-20 LTC6420-20 20 10 200 Lowest Distortion LTC6400-26 26 20 50 Lowest Distortion LTC6401-8 8 2.5 400 Lowest Power LTC6401-14 14 5 200 Lowest Power LTC6401-20 LTC6421-20 20 10 200 Lowest Power LTC6401-26 26 20 50 Lowest Power 642120fb 2 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION SELECTOR GUIDE DC ELECTRICAL CHARACTERISTICS AC ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM APPLICATIONS INFORMATION TYPICAL APPLICATIONS PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATION RELATED PARTS