ltc2484 Linear Technology Corporation, ltc2484 Datasheet - Page 9

• Manufacturer Part Number: ltc2484
• Description: 24-bit Delta Sigma Adc With Easy Drive Input Current Cancellation
• Manufacturer: Linear Technology Corporation

TYPICAL PERFOR A CE CHARACTERISTICS
500
450
400
350
300
250
200
150
100
–1
–2
–3
3
2
1
0
–1.25
0
Conversion Current
vs Output Data Rate
Integral Nonlinearity (2x Speed
Mode; V
V
IN
IN
SCK = NC
SDO = NC
SDI = GND
CS GND
F
T
V
V
V
F
O
A
REF
O
CC
REF
IN(CM)
+
–
10
= EXT OSC
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
= GND
= GND
= GND
–45°C, 25°C
= 2.7V
= V
= 2.5V
–0.75
90°C
20
CC
= 1.25V
CC
30
INPUT VOLTAGE (V)
= 2.7V, V
–0.25
40
200
198
196
194
192
190
188
186
184
182
180
–1
50
Offset Error vs V
(2x Speed Mode)
V
V
V
F
T
O
CC
REF
IN
A
0.25
60
= GND
= 25°C
V
= 0V
REF
= 5V
CC
0
= 5V
V
70
= 5V
CC
= 2.5V)
= 3V
0.75
W
1
80
V
90
2484 G28
2484 G31
IN(CM)
2
U
100
1.25
IN(CM)
(V)
3
4
–1
–2
–3
16
14
12
10
3
2
1
0
8
6
4
0
2
–2.5
179
5
Integral Nonlinearity (2x Speed
Mode; V
Noise Histogram
(2x Speed Mode)
2484 G34
10,000 CONSECUTIVE
READINGS
V
V
V
GAIN = 256
T
A
CC
REF
IN
–2
= 25°C
= 0V
= 5V
6
= 5V
–1.5
181.4
CC
OUTPUT READING (µV)
–1
INPUT VOLTAGE (V)
= 5V, V
–0.5
183.8
0
REF
25°C, 90°C
AVERAGE = 0.184mV
0.5
RMS = 0.86µV
= 5V)
V
V
V
F
1
O
–45°C
CC
REF
IN(CM)
186.2
= GND
220
210
190
180
160
240
230
200
170
= 5V
1.5
= 5V
–45
= 2.5V
Offset Error vs Temperature
(2x Speed Mode)
2484 G29
V
V
V
V
F
2
2484 G32
O
CC
REF
IN
IN(CM)
–30
= GND
188.6
= 0V
2.5
= 5V
= 5V
–15
= GND
TEMPERATURE (°C)
0
1.0
0.8
0.4
0.2
0.6
15
–1
–2
–3
3
2
1
0
–1.25
0
0
Integral Nonlinearity (2x Speed
Mode; V
RMS Noise vs V
(2x Speed Mode)
30
V
V
V
F
V
V
V
F
T
O
CC
REF
IN(CM)
O
A
CC
IN
IN(CM)
= GND
= GND
= 25°C
= 0V
= 5V
= 5V
45
–0.75
= 2.5V
1
= 1.25V
= GND
–45°C, 25°C
CC
90°C
60
INPUT VOLTAGE (V)
= 5V, V
–0.25
75
2484 G35
2
V
REF
90
REF
(V)
REF
LTC2484
0.25
3
= 2.5V)
0.75
4
2484 G30
2484 G33
2484fa
9
1.25
5