Datasheet

LTC2430/LTC2431
8
24301f
TYPICAL PERFOR A CE CHARACTERISTICS
UW
PSRR vs Frequency at V
CC
Conversion Current vs Temperature
Full-Scale Error vs V
REF
V
REF
(V)
0
FULL-SCALE ERROR (ppm OF V
REF
)
20
15
10
5
0
–5
–10
–15
–20
4
24301 G20
123 53.50.5 1.5 2.5 4.5
+FS ERROR
–FS ERROR
V
CC
= 5V
REF
–
= GND
F
O
= GND
V
INCM
= 0.5V
REF
T
A
= 25°C
Full-Scale Error vs V
CC
V
CC
(V)
2.7
–5
FULL-SCALE ERROR (ppm OF V
REF
)
–4
–2
–1
0
5
2
3.5 4.3 4.7
24301 G21
–3
3
4
1
3.1 3.9 5.1 5.5
+FS ERROR
–FS ERROR
V
REF
= 2.5V
REF
–
= GND
F
O
= GND
V
INCM
= 0.5V
REF
T
A
= 25°C
FREQUENCY AT V
CC
(Hz)
0
–140
REJECTION (dB)
–120
–80
–60
–40
0
20
100
140
24301 G22
–100
–20
80
180
220200
40
60
120 160
V
CC
= 4.1V
DC
±1.4V
REF
+
= 2.5V
REF
–
= GND
IN
+
= GND
IN
–
= GND
F
O
= GND
T
A
= 25°C
PSRR vs Frequency at V
CC
PSRR vs Frequency at V
CC
FREQUENCY AT V
CC
(Hz)
15170
–60
–40
0
15320
24301 G24
–80
–100
15220 15270 15370
–120
–140
–20
REJECTION (dB)
V
CC
= 4.1V
DC
±0.7V
REF
+
= 2.5V
REF
–
= GND
IN
+
= GND
IN
–
= GND
F
O
= GND
T
A
= 25°C
TEMPERATURE (°C)
–45
CONVERSION CURRENT (µA)
200
210
220
75
24301 G25
190
180
160
–15 15 45–30 9003060
170
240
230
V
CC
= 5.5V
V
CC
= 2.7V
V
CC
= 5V
V
CC
= 3V
F
O
= GND
CS = GND
SCK = NC
SDO = NC
Conversion Current
vs Output Data Rate
OUTPUT DATA RATE (READINGS/SEC)
0
100
SUPPLY CURRENT (µA)
200
400
500
600
60 70 80 90
1000
24301 G26
300
10 20 30 40 50 100
700
800
900
V
CC
= 5V
V
CC
= 3V
V
REF
= V
CC
IN
+
= GND
IN
–
= GND
SCK = NC
SDO = NC
SDI = GND
CS = GND
F
O
= EXT OSC
T
A
= 25°C
Sleep Mode Current
vs Temperature
TEMPERATURE (°C)
–45
0
SLEEP MODE CURRENT (µA)
1
3
4
5
–15
15
30 90
24301 G27
2
–30 0
45
60
75
6
V
CC
= 5.5V
V
CC
= 2.7V
V
CC
= 5V
V
CC
= 3V
F
O
= GND
CS = V
CC
SCK = NC
SDO = NC
FREQUENCY AT V
CC
(Hz)
1
0
–20
–40
–60
–80
–100
–120
–140
1k 100k
24301 G23
10 100
10k 1M
REJECTION (dB)
V
CC
= 4.1V
DC
REF
+
= 2.5V
REF
–
= GND
IN
+
= GND
IN
–
= GND
F
O
= GND
T
A
= 25°C