LTC2492 Linear Technology, LTC2492 Datasheet - Page 9

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

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TYPICAL PERFORMANCE CHARACTERISTICS
0.2
1.0
0.8
0.6
0.4
–3
–1
–2
3
2
1
0
–1.25
0
0
Integral Nonlinearity (2x Speed
Mode; V
RMS Noise
vs V
V
V
V
F
V
V
V
F
T
O
O
CC
REF
IN(CM)
A
CC
IN
IN(CM)
= GND
= GND
= 25°C
= 0V
REF
= 5V
= 5V
–0.75
= 2.5V
1
= 1.25V
= GND
–45°C, 25°C
(2x Speed Mode)
CC
90°C
INPUT VOLTAGE (V)
= 5V, V
–0.25
2
V
REF
REF
(V)
0.25
3
= 2.5V)
0.75
4
2492 G28
2492 G31
1.25
5
200
198
196
194
192
190
188
186
184
182
180
–1
–2
–3
3
2
1
0
–1.25
–1
Integral Nonlinearity (2x Speed
Mode; V
Offset Error
vs V
V
V
V
F
V
V
V
F
T
O
O
A
CC
REF
IN
CC
REF
IN(CM)
= GND
= 25°C
= GND
= 0V
–45°C, 25°C
IN(CM)
= 5V
= 2.7V
0
= 2.5V
–0.75
= 5V
90°C
= 1.25V
CC
1
INPUT VOLTAGE (V)
(2x Speed Mode)
= 2.7V, V
–0.25
V
IN(CM)
2
0.25
(V)
3
REF
= 2.5V)
4
0.75
5
2492 G32
2492 G29
1.25
6
230
220
210
200
190
180
170
160
240
16
14
12
10
8
0
6
4
2
–45
179
Noise Histogram
(2x Speed Mode)
Offset Error
vs Temperature (2x Speed Mode)
10,000 CONSECUTIVE
READINGS
V
V
V
T
V
V
V
V
F
A
CC
REF
IN
O
CC
REF
IN
IN(CM)
–30
= 25°C
= GND
= 0V
= 0V
= 5V
= 5V
= 5V
= 5V
–15
181.4
= GND
OUTPUT READING (μV)
TEMPERATURE (°C)
0
15
183.8
LTC2492
30
AVERAGE = 0.184mV
RMS = 0.85μV
45
186.2
60
75
2492 G30
2492 G33
2492fb
9
188.6
90