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参数资料
| 型号： | DC586A |
| 厂商： | Linear Technology |
| 文件页数： | 39/40页 |
| 文件大小： | 0K |
| 描述： | BOARD DELTA SIGMA ADC LTC2431 |
| 软件下载： | QuikEval System |
| 设计资源： | DC586A Design File DC586A Schematic |
| 标准包装： | 1 |
| 系列： | QuikEval™ |
| ADC 的数量： | 2 |
| 位数： | 20 |
| 采样率（每秒）： | 7.5 |
| 数据接口： | MICROWIRE?，串行，SPI? |
| 工作温度： | 0°C ~ 70°C |
| 已用 IC / 零件： | LTC2431 |
| 已供物品： | 板 |
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LTC2430/LTC2431
8
24301f
TYPICAL PERFOR A CE CHARACTERISTICS
UW
PSRR vs Frequency at VCC
Conversion Current vs Temperature
Full-Scale Error vs VREF
VREF (V)
0
FULL-SCALE
ERROR
(ppm
OF
V
REF
)
20
15
10
5
0
–5
–10
–15
–20
4
24301 G20
123
5
3.5
0.5
1.5
2.5
4.5
+FS ERROR
–FS ERROR
VCC = 5V
REF– = GND
FO = GND
VINCM = 0.5VREF
TA = 25°C
Full-Scale Error vs VCC
VCC (V)
2.7
–5
FULL-SCALE
ERROR
(ppm
OF
V
REF
)
–4
–2
–1
0
5
2
3.5
4.3
4.7
24301 G21
–3
3
4
1
3.1
3.9
5.1
5.5
+FS ERROR
–FS ERROR
VREF = 2.5V
REF– = GND
FO = GND
VINCM = 0.5VREF
TA = 25°C
FREQUENCY AT VCC (Hz)
0
–140
REJECTION
(dB)
–120
–80
–60
–40
0
20
100
140
24301 G22
–100
–20
80
180
220
200
40 60
120
160
VCC = 4.1VDC ±1.4V
REF+ = 2.5V
REF– = GND
IN+ = GND
IN– = GND
FO = GND
TA = 25°C
PSRR vs Frequency at VCC
FREQUENCY AT VCC (Hz)
15170
–60
–40
0
15320
24301 G24
–80
–100
15220
15270
15370
–120
–140
–20
REJECTION
(dB)
VCC = 4.1VDC ±0.7V
REF+ = 2.5V
REF– = GND
IN+ = GND
IN– = GND
FO = GND
TA = 25°C
TEMPERATURE (
°C)
–45
CONVERSION
CURRENT
(
A)
200
210
220
75
24301 G25
190
180
160
–15
15
45
–30
90
030
60
170
240
230
VCC = 5.5V
VCC = 2.7V
VCC = 5V
VCC = 3V
FO = GND
CS = GND
SCK = NC
SDO = NC
Conversion Current
vs Output Data Rate
OUTPUT DATA RATE (READINGS/SEC)
0
100
SUPPLY
CURRENT
(
A)
200
400
500
600
60 70 80 90
1000
24301 G26
300
10 20 30 40 50
100
700
800
900
VCC = 5V
VCC = 3V
VREF = VCC
IN+ = GND
IN– = GND
SCK = NC
SDO = NC
SDI = GND
CS = GND
FO = EXT OSC
TA = 25°C
Sleep Mode Current
vs Temperature
TEMPERATURE (
°C)
–45
0
SLEEP
MODE
CURRENT
(
A)
1
3
4
5
–15
15
30
90
24301 G27
2
–30
0
45
60
75
6
VCC = 5.5V
VCC = 2.7V
VCC = 5V
VCC = 3V
FO = GND
CS = VCC
SCK = NC
SDO = NC
FREQUENCY AT VCC (Hz)
1
0
–20
–40
–60
–80
–100
–120
–140
1k
100k
24301 G23
10
100
10k
1M
REJECTION
(dB)
VCC = 4.1VDC
REF+ = 2.5V
REF– = GND
IN+ = GND
IN– = GND
FO = GND
TA = 25°C
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