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LTC1290 Datasheet(PDF) 5 Page - Linear Technology

Part No. LTC1290
Description  Single Chip 12-Bit Data Acquisition System
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Maker  LINER [Linear Technology]
Homepage  http://www.linear.com
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 5 page
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5
LTC1290
CC
HARA TERISTICS
A
TYPICALPERFOR
CE
Change in Offset vs Temperature
Change in Linearity vs Reference
Voltage
REFERENCE VOLTAGE, VREF (V)
0
1.25
1.00
0.75
0.50
0.25
0
4
1290 • TPC04
1
2
3
5
VCC = 5V
Change in Gain vs Reference
Voltage
REFERENCE VOLTAGE, VREF (V)
1
–0.2
–0.1
0
5
1290 • TPC05
–0.3
–0.4
–0.5
2
3
4
VCC = 5V
AMBIENT TEMPERATURE, TA (°C)
–50
0.5
0.4
0.3
0.2
0.1
0
–10
30
50
130
1290 • TPC06
–30
10
70
90 110
ACLK = 4MHz
VCC = 5V
VREF = 5V
Change in Gain Error vs
Temperature
AMBIENT TEMPERATURE, TA (°C)
–50
0.5
0.4
0.3
0.2
0.1
0
–10
30
50
130
1290 • TPC08
–30
10
70
90 110
ACLK = 4MHz
VCC = 5V
VREF = 5V
Change in Linearity Error vs
Temperature
AMBIENT TEMPERATURE, TA (°C)
–50
0
0.1
0.3
0.4
0.5
–10
30
50
130
1290 • TPC07
0.2
–30
10
70
90 110
0.6
ACLK = 4MHz
VCC = 5V
VREF = 5V
Maximum Filter Resistor vs
Cycle Time
Maximum ACLK Frequency vs
Source Resistance
RSOURCE (Ω)
100
0
4
5
1k
10 k
100k
1290 • TPC09
3
2
1
VCC = 5V
VREF = 5V
TA = 25°C
+
INPUT
INPUT
VIN
RSOURCE–
* MAXIMUM ACLK FREQUENCY REPRESENTS THE ACLK
FREQUENCY AT WHICH A 0.1LSB SHIFT IN THE ERROR AT
ANY CODE TRANSITION FROM ITS 4MHz VALUE IS FIRST DETECTED.
CYCLE TIME, tCYC (µs)
10
100
1k
10k
10
1000
10000
1290 • TPC10
1.0
100
+
VIN
CFILTER ≥ 1µF
RFILTER
** MAXIMUM RFILTER REPRESENTS THE FILTER RESISTOR VALUE
AT WHICH A 0.1LSB CHANGE IN FULL-SCALE ERROR FROM
ITS VALUE AT RFILTER = 0 IS FIRST DETECTED.




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