LTC2487 Linear Technology, LTC2487 Datasheet - Page 9

• Manufacturer Part Number: LTC2487
• Description: 16-Bit 2-/4-Channel ADC
• Manufacturer: Linear Technology

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Typical perForMance characTerisTics
1.0
0.8
0.4
0.2
–1
–2
–3
0.6
3
2
1
0
–1.25
0
0
Integral Nonlinearity (2x Speed
Mode; V
RMS Noise vs V
(2x Speed Mode)
V
V
V
F
V
V
V
F
T
GAIN = 128
O
CC
REF
IN(CM)
O
CC
IN
IN(CM)
A
= GND
= GND
= 25°C
= 0V
= 5V
= 5V
–0.75
= 2.5V
1
= 1.25V
= GND
–45°C, 25°C
CC
85°C
INPUT VOLTAGE (V)
150
250
200
100
50
= 5V, V
–0.25
0
2
2
Offset Error vs V
(2x Speed Mode)
V
V
V
V
F
T
REF
O
A
REF
IN
IN(CM)
REF
= GND
= 25°C
= 0V
2.5
REF
(V)
= 2.5V
0.25
3
= GND
= 2.5V)
3
0.75
4
3.5
V
CC
CC
2487 G28
2487 G31
(V)
1.25
4
5
4.5
200
198
196
194
192
190
188
186
184
182
180
5
–1
–2
–3
2487 G34
3
2
1
0
–1.25
–1
Integral Nonlinearity (2x Speed
Mode; V
Offset Error vs V
(2x Speed Mode)
5.5
V
V
V
F
V
V
V
F
T
O
O
A
CC
REF
IN(CM)
CC
REF
IN
= GND
= GND
= 25°C
–45°C, 25°C
= 0V
= 2.7V
= 5V
–0.75
0
= 2.5V
= 5V
85°C
= 1.25V
CC
1
INPUT VOLTAGE (V)
= 2.7V, V
–0.25
V
IN(CM)
2
IN(CM)
0.25
(V)
3
REF
= 2.5V)
4
0.75
240
230
220
210
200
190
180
160
170
5
0
2487 G29
2487 G32
Offset Error vs V
(2x Speed Mode)
V
V
V
F
T
O
A
CC
IN
IN(CM)
1.25
= GND
= 25°C
6
= 0V
= 5V
1
= GND
210
190
160
240
230
220
200
180
170
16
14
12
10
2
8
0
6
4
2
V
179
–45
REF
Noise Histogram
(2x Speed Mode)
Offset Error vs Temperature
(2x Speed Mode)
REF
10,000 CONSECUTIVE
READINGS
V
V
V
T
GAIN = 128
V
V
V
V
F
A
CC
REF
IN
O
CC
REF
IN
IN(CM)
(V)
–30
= 25°C
= GND
= 0V
= 5V
= 0V
= 5V
3
= 5V
= 5V
–15
181.4
= GND
OUTPUT READING (µV)
TEMPERATURE (°C)
0
4
15
2487 G35
183.8
LTC2487
5
30
AVERAGE = 0.184mV
RMS = 0.85µV
45
186.2
60
75
2487 G30
2487 G33
2487fa

188.6
90