LTC2487
Typical perForMance characTerisTics
Integral Nonlinearity (2x Speed
Integral Nonlinearity (2x Speed
Noise Histogram
Mode; V = 5V, V
= 2.5V)
Mode; V = 2.7V, V = 2.5V)
REF
(2x Speed Mode)
CC
REF
CC
3
2
3
2
16
14
12
10
8
RMS = 0.85µV
AVERAGE = 0.184mV
V
V
V
F
= 5V
V
V
V
F
= 2.7V
= 2.5V
IN(CM)
= GND
10,000 CONSECUTIVE
READINGS
CC
CC
REF
= 2.5V
REF
= 1.25V
= 1.25V
V
V
V
= 5V
= 5V
IN(CM)
CC
REF
IN
= GND
O
O
= 0V
1
0
1
0
T
= 25°C
A
85°C
85°C
GAIN = 128
6
–45°C, 25°C
–45°C, 25°C
–1
–2
–3
–1
–2
–3
4
2
0
–1.25 –0.75
–0.25
0.25
0.75
1.25
–1.25 –0.75
–0.25
0.25
0.75
1.25
181.4
183.8
188.6
179
186.2
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
OUTPUT READING (µV)
2487 G28
2487 G29
2487 G30
RMS Noise vs V
Offset Error vs V
Offset Error vs Temperature
(2x Speed Mode)
REF
IN(CM)
(2x Speed Mode)
(2x Speed Mode)
1.0
0.8
0.6
0.4
0.2
0
200
198
196
194
192
190
188
186
184
182
180
240
230
220
210
200
190
180
170
160
V
V
V
= 5V
CC
V
V
V
V
= 5V
CC
= 5V
REF
= 5V
REF
= 0V
IN
= 0V
IN
IN(CM)
F
= GND
O
= GND
= GND
T
= 25°C
A
F
O
V
V
V
= 5V
= 0V
CC
IN
= GND
IN(CM)
F
= GND
O
T
= 25°C
A
GAIN = 128
0
1
2
3
4
5
–1
1
2
3
4
5
6
0
15 30
–45 –30 –15
0
45 60 75 90
V
(V)
V
(V)
IN(CM)
REF
TEMPERATURE (°C)
2487 G31
2487 G32
2487 G33
Offset Error vs V
Offset Error vs V
REF
CC
(2x Speed Mode)
(2x Speed Mode)
250
200
150
100
50
240
V
V
V
O
T
= 2.5V
V
V
V
= 5V
= 0V
IN(CM)
F = GND
O
REF
CC
IN
= 0V
IN
IN(CM)
230
220
210
= GND
= GND
= GND
F
= 25°C
T = 25°C
A
A
200
190
180
170
160
0
2
2.5
3
3.5
V
4
(V)
4.5
5
5.5
0
1
2
4
5
3
V
(V)
CC
REF
2487 G34
2487 G35
2487fa
ꢈ
Linear [ Linear ]
