Datasheet

LTC1860/LTC1861
7
18601fa
TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current vs Sampling
Frequency Supply Current vs Temperature Sleep Current vs Temperature
Reference Current vs
Sample Rate
Reference Current vs
Temperature
Reference Current vs
Reference Voltage
Typical INL Curve Typical DNL Curve
Analog Input Leakage vs
Temperature
SAMPLING FREQUENCY (kHz)
0.01
SUPPLY CURRENT (MA)
1000
100
10
1
0.1
0.01
100
1860/61 G01
0.1
1.0
10
1000
CONV LOW = 800ns
T
A
= 25oC
V
CC
= 5V
TEMPERATURE (oC)
–50
SUPPLY CURRENT (MA)
1000
800
600
400
200
0
0
50
75
1860/61 G02
–25
25
100
125
CONV HIGH = 3.2MS
f
SMPL
= 250kHz
V
CC
= 5V
V
REF
= 5V
TEMPERATURE (oC)
–50
SLEEP CURRENT (nA)
1000
900
800
700
600
500
400
300
200
100
0
0
50
75
1860/61 G03
–25
25
100
125
CONV = V
CC
= 5V
SAMPLE RATE (kHz)
0
REFERENCE CURRENT (MA)
60
50
40
30
20
10
0
50 100 150 200
1860/61 G04
250
CONV IS LOW FOR 800ns
T
A
= 25oC
V
CC
= 5V
V
REF
= 5V
TEMPERATURE (oC)
–50
REFERENCE CURRENT (MA)
55
54
53
52
51
50
49
48
47
46
45
0
50
75
1860/61 G05
–25
25
100
125
f
S
= 250kHz
V
CC
= 5V
V
REF
= 5V
V
REF
(V)
0
I
REF
(MA)
60
50
40
30
20
10
0
1234
1860/61 G06
5
f
S
= 250kHz
T
A
= 25oC
V
CC
= 5V
CODE
0
INL COC ERROR (LSBs)
4096
1860/61 G07
1024
2048
3072
1.0
0.5
0
–0.5
–1.0
512 1536 2560
3584
T
A
= 25oC
V
CC
= 5V
V
REF
= 5V
CODE
0
DNL EOC ERROR (LSBs)
4096
1860/61 G07
1024
2048
3072
1.0
0.5
0
–0.5
–1.0
512 1536 2560
3584
T
A
= 25oC
V
CC
= 5V
V
REF
= 5V
TEMPERATURE (oC)
–50
ANALOG INPUT LEAKAGE (nA)
100
1860/61 G09
050
100
75
50
25
0
–25 25 75 125
V
CC
= 5V
V
REF
= 5V
CONV = 0V