Datasheet LTC6800 (Analog Devices) - 5

LTC6800 Typical perForMance characTerisTics
Additional Input Offset Due to Additional Input Offset Due to Additional Input Offset Due to Input RS vs Input Common Mode Input RS vs Input Common Mode Input RS Mismatch vs Input (CIN < 100pF) (CIN < 100pF) Common Mode (CIN < 100pF)
60 30 50 VS = 3V VS = 5V VS = 3V VREF = 0V VREF = 0V RS = 20k 40 VREF = 0V 40 R+ = R– = R + – = R R+ = 0k, R– = 15k S 20 RIN = RIN S CIN < 100pF C 30 IN < 100pF CIN < 100pF G = 10 G = 10 G = 10 20 TA = 25°C 20 T R R+ = 0k, R– = 10k A = 25°C R 10 S = 15k S = 5k TA = 25°C 10 R+ = 0k, R– = 5k RS = 0k RS = 10k 0 0 0 RS = 5k RS = 10k –10 R+ = 5k, R– = 0k –20 –10 R+ = 10k, R– = 0k RS RS = 15k RS –20 R+ + + –30 + ADDITIONAL OFFSET ERROR (µV) –40 SMALL C R IN S = 20k ADDITIONAL OFFSET ERROR (µV) –20 SMALL CIN ADDITIONAL OFFSET ERROR (µV) SMALL CIN – – –40 – RS RS R– R+ = 15k, R– = 0k –60 –30 –50 0 0.5 1.0 1.5 2.0 2.5 3.0 0 1 2 3 4 5 0 0.5 1.0 1.5 2.0 2.5 3.0 INPUT COMMON MODE VOLTAGE (V) INPUT COMMON MODE VOLTAGE (V) INPUT COMMON MODE VOLTAGE (V) 6800 G07 6800 G08 6800 G09
Additional Input Offset Due to Additional Input Offset Due to Additional Input Offset Due to Input RS Mismatch vs Input Input RS vs Input Common Mode Input RS vs Input Common Mode Common Mode (CIN < 100pF) (CIN > 1µF) (CIN > 1µF)
40 40 70 VS = 5V R + – V IN = 0k, RIN = 20k S = 3V 30 VREF = 0V 30 VREF = 0V RS = 10k C + – R 50 IN < 100pF RIN = 0k, RIN = 15k R+ = R– = RS S = 15k C 20 G = 10 R + = 0k, R – = 10k 20 IN > 1µF R T IN IN G = 10 R S = 5k A = 25°C S = 10k 30 + – T 10 RIN = 10k, RIN = 0k 10 A = 25°C RS = 5k 10 RS = 1k 0 0 RS = 500Ω + – –10 –10 RIN = 15k, RIN = 0k –10 + – VS = 5V R+ RIN = 20k, RIN = 0k RS RS V –20 –30 REF = 0V + –20 + + R+ = R– = RS ADDITIONAL OFFSET ERROR (µV) SMALL CIN ADDITIONAL OFFSET ERROR (µV) BIG CIN BIG CIN C –30 ADDITIONAL OFFSET ERROR (µV) IN > 1µF – –30 – –50 – G = 10 R– RS R T S A = 25°C –40 –40 –70 0 1 2 3 4 5 0 0.5 1.0 1.5 2.0 2.5 3.0 0 1 2 3 4 5 INPUT COMMON MODE VOLTAGE (V) INPUT COMMON MODE VOLTAGE (V) INPUT COMMON MODE VOLTAGE (V) 6800 G10 6800 G11 6800 G12
Additional Input Offset Due to Additional Input Offset Due to Input RS Mismatch vs Input Input RS Mismatch vs Input Common Mode (CIN > 1µF) Common Mode (CIN > 1µF) Offset Voltage vs Temperature
200 80 V 200 S = 3V VS = 5V V 150 VREF = 0V REF = 0V 60 T 150 A = 25°C R+ = 0Ω, R– = 1k TA = 25°C R+ = 0Ω, R– = 1k G = 10 100 G = 10 100 40 R+ = 0Ω, R– = 500Ω R+ = 0Ω, R– = 500Ω 50 50 R+ = 0Ω, R– = 100Ω 20 R+ = 0Ω, R– = 100Ω 0 0 0 R+ = 100Ω, R– = 0Ω R+ = 100Ω, R– = 0Ω VS = 3V VS = 5V –50 –50 –20 R+ = 500Ω, R– = 0Ω R+ = 500Ω, R– = 0Ω –100 R+ R+ + –100 + –40 R+ = 1k, R– = 0Ω INPUT OFFSET VOLTAGE (µV) ADDITIONAL OFFSET ERROR (µV) BIG C R+ = 1k, R– = 0Ω ADDITIONAL OFFSET ERROR (µV) BIG C –150 IN –150 IN –60 – – R– R– –200 –200 –80 0 0.5 1.0 1.5 2.0 2.5 3.0 0 1 2 3 4 5 –50 –25 0 25 50 75 100 125 INPUT COMMON MODE VOLTAGE (V) INPUT COMMON MODE VOLTAGE (V) TEMPERATURE (°C) 6800 G13 6800 G14 6800 G15 6800fb Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Related Parts Typical Application