Datasheet

LTC2480
9
2480fd
Typical perForMance characTerisTics
Temperature Sensor
vs Temperature
Temperature Sensor Error
vs Temperature
On-Chip Oscillator Frequency
vs Temperature
TEMPERATURE (°C)
–60
V
PTAT
/V
REF
(V)
0.35
0.40
120
2480 G24
0.30
0.20
300 90–30 60
0.25
V
CC
= 5V
V
REF
= 1.4V
f
O
= GND
TEMPERATURE (°C)
–60
TEMPERATURE ERROR (°C)
1
3
5
60
2480 G25
–1
–3
0
2
4
–2
–4
–5
–30
0
30
90
120
V
CC
= 5V
f
O
= GND
V
REF
= 1.4V
TEMPERATURE (°C)
–45 –30
300
FREQUENCY (kHz)
304
310
–15
30
45
2480 G26
302
308
306
150
60 75
90
V
CC
= 4.1V
V
REF
= 2.5V
V
IN
= 0V
V
IN(CM)
= GND
f
O
= GND
On-Chip Oscillator Frequency
vs V
CC
PSRR vs Frequency at V
CC
V
CC
(V)
2.5
300
FREQUENCY (kHz)
302
304
306
308
310
3.0
3.5 4.0 4.5
2480 G27
5.0 5.5
V
REF
= 2.5V
V
IN
= 0V
V
IN(CM)
= GND
f
O
= GND
PSRR vs Frequency at V
CC
FREQUENCY AT V
CC
(Hz)
1
0
–20
–40
–60
–80
–100
–120
–140
1k 100k
2480 G28
10 100
10k 1M
REJECTION (dB)
V
CC
= 4.1V DC
V
REF
= 2.5V
IN
+
= GND
IN
–
= GND
f
O
= GND
T
A
= 25°C
FREQUENCY AT V
CC
(Hz)
0
–140
REJECTION (dB)
–120
–80
–60
–40
0
20
100
140
2480 G29
–100
–20
80
180
220200
40
60
120 160
V
CC
= 4.1V DC ±1.4V
V
REF
= 2.5V
IN
+
= GND
IN
–
= GND
f
O
= GND
T
A
= 25°C
PSRR vs Frequency at V
CC
Conversion Current
vs Temperature
Sleep Mode Current
vs Temperature
FREQUENCY AT V
CC
(Hz)
30600
–60
–40
0
30750
2480 G30
–80
–100
30650 30700 30800
–120
–140
–20
REJECTION (dB)
V
CC
= 4.1V DC ±0.7V
V
REF
= 2.5V
IN
+
= GND
IN
–
= GND
f
O
= GND
T
A
= 25°C
TEMPERATURE (°C)
–45
100
CONVERSION CURRENT (µA)
120
160
180
200
–15
15
30 90
2480 G31
140
–30 0
45
60
75
V
CC
= 5V
V
CC
= 2.7V
f
O
= GND
CS = GND
SCK = NC
SDO = NC
SDI = GND
TEMPERATURE (°C)
–45
0
SLEEP MODE CURRENT (µA)
0.2
0.6
0.8
1.0
2.0
1.4
–15
15
30 90
2480 G32
0.4
1.6
1.8
1.2
–30 0
45
60
75
V
CC
= 5V
V
CC
= 2.7V
f
O
= GND
CS = V
CC
SCK = NC
SDO = NC
SDI = GND