Datasheet

LTC2495
8
2495fd
typical perForMance characteristics
On-Chip Oscillator Frequency
vs Temperature
On-Chip Oscillator Frequency
vs V
CC
PSRR vs Frequency at V
CC
PSRR vs Frequency at V
CC
PSRR vs Frequency at V
CC
Conversion Current
vs Temperature
TEMPERATURE (°C)
–45 –30
300
FREQUENCY (kHz)
304
310
–15
30
45
2495 G19
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
V
CC
(V)
2.5
300
FREQUENCY (kHz)
302
304
306
308
310
3.0
3.5 4.0 4.5
2495 G20
5.0 5.5
V
REF
= 2.5V
V
IN
= 0V
V
IN(CM)
= GND
f
O
= GND
T
A
= 25°C
FREQUENCY AT V
CC
(Hz)
1
0
–20
–40
–60
–80
–100
–120
–140
1k 100k
2495 G21
10 100
10k 1M
REJECTION (dB)
V
CC
= 4.1V DC
V
REF
= 2.5V
IN
+
= GND
IN
–
= GND
f
O
= GND
T
A
= 25oC
FREQUENCY AT V
CC
(Hz)
0
–140
REJECTION (dB)
–120
–80
–60
–40
0
20
100
140
2495 G22
–100
–20
80
180
220200
40
60
120 160
V
CC
= 4.1V DC p1.4V
V
REF
= 2.5V
IN
+
= GND
IN
–
= GND
f
O
= GND
T
A
= 25oC
FREQUENCY AT V
CC
(Hz)
30600
–60
–40
0
30750
2495 G23
–80
–100
30650 30700 30800
–120
–140
–20
REJECTION (dB)
V
CC
= 4.1V DC p0.7V
V
REF
= 2.5V
IN
+
= GND
IN
–
= GND
f
O
= GND
T
A
= 25oC
TEMPERATURE (°C)
–45
100
CONVERSION CURRENT (µA)
120
160
180
200
–15
15
30 90
2495 G24
140
–30 0
45
60
75
V
CC
= 5V
V
CC
= 2.7V
f
O
= GND
Offset Error vs V
CC
Offset Error vs V
REF
V
CC
(V)
2.7
OFFSET ERROR (ppm of V
REF
)
0.1
0.2
0.3
3.9 4.7
2495 G17
0
–0.1
3.1 3.5
4.3 5.1 5.5
–0.2
–0.3
REF
+
= 2.5V
REF
–
= GND
V
IN
= 0V
V
IN(CM)
= GND
T
A
= 25°C
f
O
= GND
V
REF
(V)
0
–0.3
OFFSET ERROR (ppm of V
REF
)
–0.2
–0.1
0
0.1
0.2
0.3
1 2 3 4
2495 G18
5
V
CC
= 5V
REF
–
= GND
V
IN
= 0V
V
IN(CM)
= GND
T
A
= 25°C
f
O
= GND