LTC2498 Linear Technology, LTC2498 Datasheet - Page 8

• Manufacturer Part Number: LTC2498
• Description: 24-Bit 8-/16-Channel ADC
• Manufacturer: Linear Technology

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LTC2498
TYPICAL PERFORMANCE CHARACTERISTICS
8
–100
–120
–140
–20
–60
310
308
306
304
302
300
–40
–80
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
–45 –30
–45
0
On-Chip Oscillator Frequency
vs Temperature
PSRR vs Frequency at V
Sleep Mode Current
vs Temperature
V
V
IN
IN
F
T
F
CS = V
SCK = NC
SDO = NC
SDI = GND
V
V
V
V
F
O
O
CC
REF
A
O
CC
REF
IN
IN(CM)
+
–
20
–30
= GND
= 25°C
= GND
= GND
= GND
= GND
= 0V
= 4.1V DC ±1.4V
= 4.1V
= 2.5V
= 2.5V
40 60
CC
–15
–15
= GND
FREQUENCY AT V
TEMPERATURE (°C)
TEMPERATURE (°C)
0
0
80
V
V
CC
100
15
15
CC
= 2.7V
= 5V
120
30
30
140
CC
45
45
(Hz)
160
CC
60
60
180
75
200
75
2498 G19
2498 G22
2498 G25
220
90
90
–120
–140
–100
310
308
306
304
302
300
500
450
400
350
300
250
200
150
100
–20
–40
–60
–80
30600
0
2.5
0
On-Chip Oscillator Frequency
vs V
PSRR vs Frequency at V
Conversion Current
vs Output Data Rate
V
V
IN
IN
F
T
V
IN
IN
SCK = NC
SDO = NC
SDI = GND
CS GND
F
T
O
O
A
CC
REF
A
REF
+
–
+
–
10
= EXT OSC
= 25°C
= GND
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
= GND
= GND
= GND
= GND
CC
= 4.1V DC ±0.7V
3.0
= 2.5V
= V
20
30650
CC
FREQUENCY AT V
30
3.5
40
V
30700
CC
4.0
50
(V)
60
V
CC
CC
4.5
V
V
V
V
F
T
70
(Hz)
= 5V
CC
O
30750
A
REF
IN
IN(CM)
CC
= GND
= 25°C
= 0V
= 3V
80
= 2.5V
5.0
= GND
90
2498 G20
2498 G23
2498 G26
30800
100
5.5
–100
–120
–140
–20
–40
–60
–80
200
180
160
140
100
120
–1
–2
–3
0
3
2
1
0
–2.5
–45
1
PSRR vs Frequency at V
Conversion Current
vs Temperature
Integral Nonlinearity (2x Speed
Mode; V
F
CS = GND
SCK = NC
SDO = NC
SDI = GND
V
V
IN
IN
F
T
O
O
CC
REF
A
–30
+
–
–2
= GND
= GND
= 25°C
= GND
= GND
= 4.1V DC
10
= 2.5V
–1.5
–15
FREQUENCY AT V
CC
–1
TEMPERATURE (°C)
INPUT VOLTAGE (V)
100
0
= 5V, V
–0.5
V
V
15
CC
CC
1k
= 2.7V
0
= 5V
REF
30
25°C, 90°C
0.5
CC
= 5V)
10k
45
V
V
V
F
(Hz)
1
O
–45°C
CC
REF
IN(CM)
CC
= GND
60
= 5V
1.5
= 5V
100k
= 2.5V
75
2498 G21
2498 G24
2498 G27
2
2498fc
1M
90
2.5