Datasheet

LTC2640
10
2640fc
For more information www.linear.com/LTC2640
typical perFormance characteristics
Integral Nonlinearity (INL) Differential Nonlinearity (DNL)
INL vs Temperature
DNL vs Temperature
Full-Scale Output Voltage
vs Temperature
Settling to ±1LSB
Settling to ±1LSB
LTC2640-L12 (Internal Reference, V
FS
= 2.5V)
CODE
0
INL (LSB)
0
0.5
4095
2640 G01
–0.5
–1.0
1024
2048
3072
1.0
V
CC
= 3V
CODE
0
DNL (LSB)
0
0.5
4095
2640 G02
–0.5
–1.0
1024
V
CC
= 3V
2048
3072
1.0
Reference Output Voltage
vs Temperature
TEMPERATURE (°C)
–50 –25 25 75 125
V
REF
(V)
1.250
1.255
150
2640 G03
1.245
1.240
0
50
100
1.260
V
CC
= 3V
TEMPERATURE (°C)
–50 –25 25 75 125
INL (LSB)
0
0.5
150
2640 G04
–0.5
–1.0
0
50
100
1.0
V
CC
= 3V
INL (POS)
INL (NEG)
TEMPERATURE (°C)
–50 –25 25 75 125
DNL (LSB)
0
0.5
150
2640 G05
–0.5
–1.0
0
50
100
1.0
V
CC
= 3V
DNL (POS)
DNL (NEG)
TEMPERATURE (°C)
–50 –25 25 75 125
FS OUTPUT VOLTAGE (V)
2.50
2.51
150
2640 G06
2.49
2.48
0
50
100
2.52
V
CC
= 3V
2µs/DIV
2640 G07
V
OUT
1LSB/DIV
1/4 SCALE TO 3/4 SCALE STEP
V
CC
= 3V, V
FS
= 2.5V
R
L
= 2k, C
L
= 100pF
AVERAGE OF 256 EVENTS
CS/LD
2V/DIV
3.6µs
2µs/DIV
2640 G08
V
OUT
1LSB/DIV
3/4 SCALE TO 1/4 SCALE STEP
V
CC
= 3V, V
FS
= 2.5V
R
L
= 2k, C
L
= 100pF
AVERAGE OF 256 EVENTS
CS/LD
2V/DIV
4.1µs
T
A
= 25°C, unless otherwise noted.