Datasheet ADA4927-1/ADA4927-2 (Analog Devices) - 9

Data Sheet ADA4927-1/ADA4927-2 1 1 T 1 1 1 B S S 1 U NI F V V D O + – – – P – 4 3 2 1 0 9 2 2 2 2 2 1 –IN1 1 18 +OUT1 +FB1 2 17 VOCM1 +V 3 ADA4927-2 16 S1 –VS2 TOP VIEW +V 4 15 S1 –V (Not to Scale) S2 –FB2 5 14 PD2 +IN2 6 13 –OUT2 7 8 9 0 1 2 1 1 1 2 2 2 2 2 2 N B S S M T I F V V C U – + + + OV O+ NOTES
06 0
1. CONNECT THE EXPOSED PADDLE TO ANY PLANE
74-
BETWEEN AND INCLUDING +VS AND –VS.
075 Figure 6. ADA4927-2 Pin Configuration
Table 10. ADA4927-2 Pin Function Descriptions Pin No. Mnemonic Description
1 −IN1 Negative Input Summing Node 1 2 +FB1 Positive Output Feedback 1 3, 4 +VS1 Positive Supply Voltage 1 5 −FB2 Negative Output Feedback 2 6 +IN2 Positive Input Summing Node 2 7 −IN2 Negative Input Summing Node 2 8 +FB2 Positive Output Feedback 2 9, 10 +VS2 Positive Supply Voltage 2 11 VOCM2 Output Common-Mode Voltage 2 12 +OUT2 Positive Output 2 13 −OUT2 Negative Output 2 14 PD2 Power-Down Pin 2 15, 16 −VS2 Negative Supply Voltage 2 17 VOCM1 Output Common-Mode Voltage 1 18 +OUT1 Positive Output 1 19 −OUT1 Negative Output 1 20 PD1 Power-Down Pin 1 21, 22 −VS1 Negative Supply Voltage 1 23 −FB1 Negative Output Feedback 1 24 +IN1 Positive Input Summing Node 1 25 (EPAD) Exposed Pad (EPAD) Connect the exposed pad to any plane between and including +VS and −VS. Rev. B | Page 9 of 25 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAMS REVISION HISTORY SPECIFICATIONS ±5 V OPERATION ±DIN to VOUT, dm Performance VOCM to VOUT, cm Performance General Performance +5 V OPERATION ±DIN to VOUT, dm Performance VOCM to VOUT, cm Performance General Performance ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE MAXIMUM POWER DISSIPATION ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TEST CIRCUITS THEORY OF OPERATION DEFINITION OF TERMS Differential Voltage Common-Mode Voltage Balance APPLICATIONS INFORMATION ANALYZING AN APPLICATION CIRCUIT SETTING THE CLOSED-LOOP GAIN ESTIMATING THE OUTPUT NOISE VOLTAGE IMPACT OF MISMATCHES IN THE FEEDBACK NETWORKS CALCULATING THE INPUT IMPEDANCE FOR AN APPLICATION CIRCUIT Terminating a Single-Ended Input INPUT COMMON-MODE VOLTAGE RANGE INPUT AND OUTPUT CAPACITIVE AC COUPLING SETTING THE OUTPUT COMMON-MODE VOLTAGE POWER-DOWN Power-Down in Cold Applications LAYOUT, GROUNDING, AND BYPASSING HIGH PERFORMANCE ADC DRIVING OUTLINE DIMENSIONS ORDERING GUIDE