LTC2487
Typical perForMance characTerisTics
On-Chip Oscillator Frequency
vs Temperature
On-Chip Oscillator Frequency
vs V
PSRR vs Frequency at V
CC
CC
310
308
306
304
302
300
310
308
306
304
0
–20
V
V
= 4.1V DC ±0.7V
REF
IN = GND
CC
= 2.5V
+
–
IN = GND
–40
F
= GND
= 25°C
O
A
T
–60
–80
V
V
V
V
= 4.1V
V
V
V
= 2.5V
REF
CC
–100
–120
–140
= 2.5V
= 0V
REF
IN
IN(CM)
302
300
= 0V
= GND
= GND
IN
IN(CM)
= GND
= GND
F
O
F
T = 25°C
A
O
–45 –30 –15
0
15 30 45 60 75 90
2.5
3.5
4.0
(V)
4.5
5.0
5.5
3.0
10k
FREQUENCY AT V (Hz)
1M
1
10
100
1k
100k
TEMPERATURE (°C)
V
CC
CC
2487 G19
2487 G20
2487 G21
Conversion Current
vs Temperature
PSRR vs Frequency at V
PSRR vs Frequency at V
CC
CC
0
–20
–40
0
200
180
V
V
= 4.1V DC ±1.4V
REF
IN = GND
V
V
= 4.1V DC ±0.7V
REF
IN = GND
F = GND
O
CC
CC
= 2.5V
= 2.5V
–20
+
–
+
–
IN = GND
IN = GND
–40
F
= GND
= 25°C
V
= 5V
CC
F
= GND
= 25°C
O
A
O
A
T
T
160
–60
–80
–60
–80
V
= 2.7V
CC
140
120
100
–100
–120
–100
–120
–140
–140
0
60
100 120 140 160 180 200 220
30650
30700
30800
60
20 40
80
30600
30750
–45 –30 –15
0
15 30 45
75 90
FREQUENCY AT V (Hz)
TEMPERATURE (°C)
FREQUENCY AT V (Hz)
CC
CC
2487 G22
2487 G23
2487 G24
Sleep Mode Current
vs Temperature
Conversion Current
vs Output Data Rate
Integral Nonlinearity (2x Speed
Mode; V = 5V, V = 5V)
CC
REF
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
3
2
500
450
400
350
300
250
200
150
100
F
= GND
V
= V
V
V
V
= 5V
O
REF
CC
CC
+
IN = GND
= 5V
REF
–
IN = GND
= 2.5V
IN(CM)
F
= EXT OSC
= 25°C
F = GND
O
O
A
T
V
= 5V
CC
1
0
V
= 5V
CC
25°C, 85°C
V
= 3V
CC
–1
–2
–3
V
= 2.7V
CC
–45°C
–45 –30 –15
0
15 30 45 60 75 90
–2.5 –2 –1.5 –1 –0.5
0
0.5
1
1.5
2
2.5
0
10 20 30 40 50 60 70 80 90 100
OUTPUT DATA RATE (READINGS/SEC)
2487 G26
INPUT VOLTAGE (V)
TEMPERATURE (°C)
2487 G25
2487 G27
2487fa
ꢇ
Linear [ Linear ]
