Datasheet AD8555 (Analog Devices) - 10

AD8555 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS V 40 S = 5V VS = 5V 40 35 30 30 25 20 20 15 NUMBER OF AMPLIFIERS 10 10 NUMBER OF AMPLIFIERS 5 0 –9 –6 –3 0 3 6 9 0 V 0 12.5 25.0 37.5 50.0 62.5 75.0 OS (
µ
V)
04598-0-005
TCVOS (nV/°C)
04598-0-006 Figure 4. Input Offset Voltage Distribution Figure 7. TCVOS @ VS = 5 V
1.0 50 0.5 45 0 40 –0.5 35 –1.0 30
µ
V) ( –1.5 25 OSV –2.0 20 –2.5 15 –3.0 NUMBER OF AMPLIFIERS 10 –3.5 5 –4.0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 0 0 12.5 25.0 37.5 50.0 62.5 75.0 VCM (V)
04598-0-061
TCVOS (nV/°C)
04598-0-007 Figure 5. Input Offset Voltage vs. Common-Mode Voltage Figure 8. TCVOS @ VS = 2.7 V
10 10.0 VS = 5V 8 7.5 6
µ
V) 5.0 4 2 2.5 VOUT = 0.3V 0 (mV) 0 OS –2 –2.5 VOUT = 4.7V BUF V –4 –5.0 INPUT OFFSET VOLTAGE ( –6 –8 –7.5 –10 –50 –25 0 25 50 75 100 125 150 –10.0 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C)
04598-0-062
TEMPERATURE (°C)
04598-0-008 Figure 6. Input Offset Voltage vs. Temperature Figure 9. Output Buffer Offset vs. Temperature Rev. B | Page 10 of 29 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY ELECTRICAL SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION GAIN VALUES OPEN WIRE FAULT DETECTION SHORTED WIRE FAULT DETECTION FLOATING VPOS, VNEG, OR VCLAMP FAULT DETECTION DEVICE PROGRAMMING Digital Interface Initial State Simulation Mode Programming Mode Parity Error Detection Read Mode Sense Current Suggested Programming Procedure Suggested Algorithm to Determine Optimal Gain and Offset Codes FILTERING FUNCTION DRIVING CAPACITIVE LOADS RF INTERFERENCE SINGLE-SUPPLY DATA ACQUISITION SYSTEM USING THE AD8555 WITH CAPACITIVE SENSORS OUTLINE DIMENSIONS ORDERING GUIDE