Datasheet

6
LTC1290
1290fe
CCHARA TERIST
ICS
UW
AT
Y
P
I
CA
LPER
F
O
R
C
E
Change in Offset vs Temperature
Change in Linearity vs Reference
Voltage
REFERENCE VOLTAGE, V
REF
(V)
0
LINEARITY ERROR (LSB = • V
REF
)
1.25
1.00
0.75
0.50
0.25
0
4
1290 • TPC04
1
2
3
5
1
4096
V
CC
= 5V
Change in Gain vs Reference
Voltage
REFERENCE VOLTAGE, V
REF
(V)
1
CHANGE IN GAIN ERROR (LSB = • V
REF
)
–0.2
–0.1
0
5
1290 • TPC05
–0.3
–0.4
–0.5
2
3
4
1
4096
V
CC
= 5V
AMBIENT TEMPERATURE, T
A
(°C)
–50
MAGNITUDE OF OFFSET CHANGE ⏐∆OFFSET⏐ (LSB)
0.5
0.4
0.3
0.2
0.1
0
–10
30
50 130
1290 • TPC06
–30 10
70
90
110
ACLK = 4MHz
V
CC
= 5V
V
REF
= 5V
Change in Gain Error vs
Temperature
AMBIENT TEMPERATURE, T
A
(°C)
–50
MAGNITUDE OF GAIN CHANGE ⏐∆GAIN⏐ (LSB)
0.5
0.4
0.3
0.2
0.1
0
–10
30
50 130
1290 • TPC08
–30 10
70
90
110
ACLK = 4MHz
V
CC
= 5V
V
REF
= 5V
Change in Linearity Error vs
Temperature
AMBIENT TEMPERATURE, T
A
(°C)
–50
0
MAGNITUDE OF LINEARITY CHANGE ⏐∆LINEARITY⏐ (LSB)
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
V
CC
= 5V
V
REF
= 5V
Maximum ACLK Frequency vs
Source Resistance
R
SOURCE
(Ω)
100
0
MAXIMUM ACLK FREQUENCY* (MHz)
4
5
1k 10 k 100k
1290 • TPC09
3
2
1
V
CC
= 5V
V
REF
= 5V
T
A
= 25°C
+
–
INPUT
INPUT
V
IN
R
SOURCE
–
* 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.
Supply Current vs Temperature
Supply Current vs Supply Voltage
Unadjusted Offset Voltage vs
Reference Voltage
SUPPLY VOLTAGE, V
CC
(V)
46810
SUPPLY CURRENT, I
CC
(mA)
1290 • TPC01
26
22
18
14
10
6
2
ACLK = 4MHz
T
A
= 25°C
AMBIENT TEMPERATURE, T
A
(°C)
–50
SUPPLY CURRENT, I
CC
(mA)
30
10
9
8
7
6
5
4
3
LT1290 • TPC02
–10 70
–30
50
10 90 110 130
ACLK = 4MHz
V
CC
= 5V
REFERENCE VOLTAGE, V
REF
(V)
1
OFFSET ERROR (LSB = • V
REF
)
5
1290 • TPC03
2
3
4
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
1
4096
V
OS
= 0.25mV
V
OS
= 0.125mV
V
CC
= 5V