Data SheetADA4857-1/ADA4857-2PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONSPD 18 +VSFB18PDADA4857-1FB 27 OUT–IN27+VSADA4857-1TOP VIEW+IN36OUT–IN 3TOP VIEW6 NC(Not to Scale)(Not to Scale)–VS 45NC+IN 45 –V 06 S 0 0- NC = NO CONNECT 04 07 NOTES 1. NC = NO CONNECT. DO NOT CONNECTTO THIS PIN.2. THE EXPOSED PAD MAY BE CONNECTED 005 TO GND OR VS. 07040- Figure 5. 8-Lead LFCSP Pin Configuration Figure 6. 8-Lead SOIC Pin Configuration Table 5. 8-Lead LFCSP Pin Function DescriptionsTable 6. 8-Lead SOIC Pin Function DescriptionsPin No.MnemonicDescriptionPin No.MnemonicDescription 1 PD Power Down. 1 FB Feedback. 2 FB Feedback. 2 −IN Inverting Input. 3 −IN Inverting Input. 3 +IN Noninverting Input. 4 +IN Noninverting Input. 4 −VS Negative Supply. 5 −VS Negative Supply. 5 NC No Connect. 6 NC No Connect. 6 OUT Output. 7 OUT Output. 7 +VS Positive Supply. 8 +VS Positive Supply. 8 PD Power Down. EP GND or VS Exposed Pad. The exposed pad may be connected to GND or VS. Rev. D | Page 7 of 21 Document Outline FEATURES APPLICATIONS CONNECTION DIAGRAMS GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS ±5 V SUPPLY +5 V SUPPLY ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE MAXIMUM POWER DISSIPATION ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TEST CIRCUITS APPLICATIONS INFORMATION POWER-DOWN OPERATION CAPACITIVE LOAD CONSIDERATIONS RECOMMENDED VALUES FOR VARIOUS GAINS ACTIVE LOW-PASS FILTER (LPF) NOISE CIRCUIT CONSIDERATIONS PCB LAYOUT POWER SUPPLY BYPASSING GROUNDING OUTLINE DIMENSIONS ORDERING GUIDE