Datasheet

4
LTC1291
1291fa
Supply Current vs Supply Voltage
Supply Current vs Temperature
CCHARA TERIST
ICS
UW
AT
Y
P
I
CA
LPER
F
O
R
C
E
Change in Gain vs Temperature
Change in Offset vs Supply
Voltage
SUPPLY VOLTAGE (V)
4
SUPPLY CURRENT (mA)
4
6
6
1291 G01
2
0
5
10
8
CLK = 1MHz
T
A
= 25°C
AMBIENT TEMPERATURE (°C)
–50
SUPPLY CURRENT (mA)
7
8
9
30 70
1291 G02
6
5
–30 –10
50 90
110
4
3
10
10
130
CLK = 1MHz
V
CC
= 5V
Change in Linearity vs Supply
Voltage
Change in Gain Error vs Supply
Voltage Change in Offset vs Temperature
Change in Linearity vs
Temperature
AMBIENT TEMPERATURE (°C)
–50
0
MAGNITUDE OF LINEARITY CHANGE (LSB)
0.2
0.5
0
50
75
1291 G07
0.1
0.4
0.3
–25
25
100
125
V
CC
= 5V
CLK = 1MHz
AMBIENT TEMPERATURE (°C)
–50
0
MAGNITUDE OF GAIN CHANGE (LSB)
0.2
0.5
0
50
75
1291 G08
0.1
0.4
0.3
–25
25
100
125
V
CC
= 5V
CLK = 1MHz
Minimum Clock Rate for
0.1 LSB Error
AMBIENT TEMPERATURE (°C)
–50
MINIMUM CLK FREQUENCY* (MHz)
0.15
0.20
0.25
50
1291 G09
0.10
0.05
–25
0
25
75
125100
V
CC
= 5V
* AS THE CLK FREQUENCY IS DECREASED FROM 1MHz, MINIMUM CLK FREQUENCY (∆ERROR ≤ 0.1LSB) REPRESENTS THE
FREQUENCY AT WHICH A 0.1LSB SHIFT IN ANY CODE TRANSITION FROM ITS 1MHz VALUE IS FIRST DETECTED
SUPPLY VOLTAGE (V)
4.0
CHANGE IN LINEARITY (LSB = 1/4096 • V
CC
(V
REF
))
0.1
0.3
0.4
6.0
1291 G04
4.5
5.0
5.5
0.2
0.5
0
SUPPLY VOLTAGE (V)
4.0
CHANGE IN GAIN ERROR (LSB = 1/4096 × V
CC
(V
REF
))
0.1
0.3
0.4
6.0
1291 G05
–0.1
–0.3
–0.5
4.5
5.0
5.5
0.2
0.5
0
–0.2
–0.4
SUPPLY VOLTAGE (V)
4.0
CHANGE IN OFFSET (LSB = 1/4096 • V
CC
(V
REF
))
0.1
0.3
0.4
6.0
1291 G03
–0.1
–0.3
–0.5
4.5
5.0
5.5
0.2
0.5
0
–0.2
–0.4
AMBIENT TEMPERATURE (°C)
–50
0
MAGNITUDE OF OFFSET CHANGE (LSB)
0.2
0.5
0
50
75
1291 G06
0.1
0.4
0.3
–25
25
100
125
V
CC
= 5V
CLK = 1MHz