LTC2492 Linear Technology, LTC2492 Datasheet - Page 8

• Manufacturer Part Number: LTC2492
• Description: 24-Bit 2-/4-Channel ADC
• Manufacturer: Linear Technology

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LTC2492
TYPICAL PERFORMANCE CHARACTERISTICS
8
–100
–120
–140
–60
306
300
–20
–40
–80
310
308
304
302
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
On-Chip Oscillator Frequency
vs Temperature
PSRR vs Frequency at V
0
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
A
O
CC
REF
CC
REF
IN
IN(CM)
+
20
–30
–
= GND
= 25°C
= GND
= GND
= GND
= 0V
= GND
= 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
15
100
15
CC
= 2.7V
= 5V
120
30
30
140
CC
45
45
(Hz)
160
CC
60
60
180
75
75
200
2492 G19
2492 G22
2492 G25
220
90
90
–120
–140
–100
310
308
306
304
302
300
–40
–60
–80
500
450
400
350
300
250
200
150
100
–20
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
30750
O
A
REF
IN
IN(CM)
CC
= GND
= 25°C
= 0V
= 3V
80
= 2.5V
5.0
= GND
90
2492 G20
2492 G23
2492 G26
30800
100
5.5
–100
–120
–140
–40
–60
–80
–20
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
A
CC
REF
–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
30
REF
25°C, 90°C
0.5
CC
10k
45
= 5V)
(Hz)
V
V
V
F
– 45°C
1
O
CC
CC
REF
IN(CM)
= GND
60
= 5V
1.5
100k
= 5V
= 2.5V
75
2492 G24
2492 G21
2492 G27
2
2492fb
1M
90
2.5