Datasheet AD8222 (Analog Devices) - 7

Data Sheet AD8222 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS 1 2 1 2 S T T S T T S S +V OU OU –V +V OU OU –V 16 15 14 13 61 51 4 3 1 1 –IN1 1 PIN 1 12 –IN2 INDICATOR –IN1 1 12 –IN2 RG1 2 11 AD8222 RG2 RG1 2 AD8222 11 RG2 RG1 3 10 RG2 TOP VIEW TOP VIEW +IN1 4 9 +IN2 RG1 3 10 RG2 (Not to Scale) +IN1 4 9 +IN2 5 6 7 8
2
S 1 2 S
00
F F
7-
+V –V 5 6 7 8
94
RE RE
05
S 1 2 S +V –V REF REF
2 10
NOTES
7-
1. THE EXPOSED PAD MUST BE CONNECTED TO –VS.
5940 Figure 2. 16-Lead LFCSP (CP-16-19) Pin Configuration Figure 3. 16-Lead LFCSP (CP-16-26) Pin Configuration
Table 7. Pin Function Descriptions Pin No. CP-16-19 CP-16-26 Mnemonic Description
1 1 −IN1 Negative Input In-Amp 1. 2, 3 2, 3 RG1 Gain Resistor In-Amp 1. 4 4 +IN1 Positive Input In-Amp 1. 5, 16 5, 16 +VS Positive Supply. 6 6 REF1 Reference Adjust In-Amp 1. 7 7 REF2 Reference Adjust In-Amp 2. 8, 13 8, 13 −VS Negative Supply. 9 9 +IN2 Positive Input In-Amp 2. 10, 11 10, 11 RG2 Gain Resistor In-Amp 2. 12 12 −IN2 Negative Input In-Amp 2. 14 14 OUT2 Output In-Amp 2. 15 15 OUT1 Output In-Amp 1. Not applicable 0 EPAD Exposed Pad. The exposed pad must be connected to −VS. Rev. B | Page 7 of 24 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE Maximum Power Dissipation ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION AMPLIFIER ARCHITECTURE GAIN SELECTION REFERENCE TERMINAL PACKAGE CONSIDERATIONS Package Without Thermal Pad Package with Thermal Pad LAYOUT Common-Mode Rejection Over Frequency Reference Power Supplies INPUT BIAS CURRENT RETURN PATH INPUT PROTECTION Input Voltages Beyond the Rails Differential Input Voltages at High Gains RF INTERFERENCE COMMON-MODE INPUT VOLTAGE RANGE APPLICATIONS INFORMATION DIFFERENTIAL OUTPUT Setting the Common-Mode Voltage 2-Channel Differential Output Using a Dual Op Amp DRIVING A DIFFERENTIAL INPUT ADC RFI and Antialiasing Filter Second Antialiasing Filter Reference PRECISION STRAIN GAGE DRIVING CABLING OUTLINE DIMENSIONS ORDERING GUIDE