LTC2640
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted.
LTC2640
Gain Error vs VCC
Gain Error vs Temperature
Large-Signal Response
0.4
0.3
0.4
0.3
EXTERNAL REF.
= 2.5V
EXTERNAL REF.
= 2.5V
V
V
REF
REF
0.2
0.2
0.1
0.1
V
0.0
0.0
OUT
0.5V/DIV
–0.1
–0.2
–0.3
–0.4
–0.1
–0.2
–0.3
–0.4
V
= V = 5V
CC
FS
1/4 SCALE TO 3/4 SCALE
2.5
3
3.5
4
4.5
5
5.5
–50 –25
0
25 50 75 100 125 150
TEMPERATURE (°C)
2640 G25
2µs/DIV
2640 G26
V
(V)
CC
2640 G24
Headroom at Rails
vs Output Current
Power-On Reset Glitch
Mid-Scale-Glitch Impulse
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
LTC2640-L
5V SOURCING
V
CC
CS/LD
5V/DIV
2V/DIV
3V (LTC2640-L) SOURCING
LTC2640-H12, V = 5V:
CC
3.0nV-s TYP
V
OUT
ZERO-SCALE
5mV/DIV
V
OUT
5V SINKING
3V (LTC2640-L) SINKING
2mV/DIV
LTC2640-L12, V = 3V:
CC
2.1nV-s TYP
200µs/DIV
0
1
2
3
4
5
6
7
8
9
10
2µs/DIV
2640 G28
2640 G27
I
(mA)
OUT
2640 G29
Supply Current vs Logic Voltage
Exiting Power-Down to Mid-Scale
Hardware CLR
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
SWEEP SCK, SDI, CS/LD
AND CLR BETWEEN
0V AND V
CC
CS/LD
2V/DIV
V
OUT
1V/DIV
V
= 5V
CC
V
OUT
0.5V/DIV
V
= 3V
CC
(LTC2640-L)
CLR
5V/DIV
LTC2640-LZ
LTC2640-H
0
1
2
3
4
5
1µs/DIV
4µs/DIV
2640 G32
2640 G30
LOGIC VOLTAGE (V)
2640 G31
2640fd
13
For more information www.linear.com/LTC2640
Linear [ Linear ]
