Datasheet

LTC1864/LTC1865
8
18645fb
TYPICAL PERFORMANCE CHARACTERISTICS
Reference Current vs
Sampling Rate
Reference Current vs
Temperature
Reference Current vs
Reference Voltage
Typical INL Curve Typical DNL Curve
Analog Input Leakage Current vs
Temperature
Supply Current vs Sampling
Frequency Supply Current vs Temperature Sleep Current vs Temperature
SAMPLING FREQUENCY (kHz)
0.01
SUPPLY CURRENT (μA)
1000
100
10
1
0.1
0.01
100
18645 G01
0.1
1.0
10
1000
V
CC
= 5V
T
A
= 25°C
CONV LOW = 800ns
TEMPERATURE (°C)
–50
SUPPLY CURRENT (μA)
1000
800
600
400
200
0
0
50
75
18645 G02
–25
25
100
125
V
CC
= 5V
V
REF
= 5V
f
SAMPLE
= 250kHz
CONV HIGH = 3.2μS
TEMPERATURE (°C)
–50
SLEEP CURRENT (nA)
1000
900
800
700
600
500
400
300
200
100
0
0
50
75
18645 G03
–25
25
100
125
CONV = V
CC
= 5V
SAMPLE RATE (kHz)
0
REFERENCE CURRENT (μA)
60
50
40
30
20
10
0
50 100 150 200
18645 G04
250
V
CC
= 5V
T
A
= 25°C
V
REF
= 5V
CONV LOW = 800ns
TEMPERATURE (°C)
–50
REFERENCE CURRENT (μA)
55
54
53
52
51
50
49
48
47
46
45
0
50
75
18645 G05
–25
25
100
125
V
CC
= 5V
V
REF
= 5V
f
S
= 250kHz
V
REF
(V)
0
REFERENCE CURRENT (μA)
60
50
40
30
20
10
0
1234
18645 G06
5
V
CC
= 5V
T
A
= 25°C
f
S
= 250kHz
CODE
0
INL ERROR (LSBs)
65536
18645 G07
32768
4
2
0
–2
–4
16384
49152
V
CC
= 5V
T
A
= 25°C
V
REF
= 5V
CODE
0 65536
18645 G08
3276816384
49152
DNL ERROR (LSBs)
2
1
0
–1
–2
V
CC
= 5V
T
A
= 25°C
V
REF
= 5V
TEMPERATURE (°C)
–50
ANALOG INPUT LEAKAGE (nA)
100
18645 G09
050
100
75
50
25
0
–25 25 75 125
V
CC
= 5V
V
REF
= 5V
CONV = 0V