LTC2430/LTC2431
典型PERFOR一个CE特征
满量程误差VS V
REF
20
满量程误差（ ppm的V型
REF
)
15
10
+ FS错误
5
0
–5
-FS错误
–10
–15
–20
0
0.5
1
1.5
2
2.5 3
V
REF
(V)
3.5
4
4.5
5
满量程误差（ ppm的V型
REF
)
1
0
–1
–2
–3
–4
–5
2.7
3.1
3.5
3.9 4.3
V
CC
(V)
4.7
5.1
5.5
-FS错误
抑制（分贝）
V
CC
= 5V
REF
–
= GND
F
O
= GND
V
INCM
= 0.5V
REF
T
A
= 25°C
PSRR VS在V频率
CC
0
–20
–40
抑制（分贝）
转换电流（ μA ）
抑制（分贝）
–60
–80
–100
–120
–140
1
V
CC
= 4.1V
DC
REF
+
= 2.5V
REF
–
= GND
IN
+
= GND
IN
–
= GND
F
O
= GND
T
A
= 25°C
10
10k 100k
1k
100
在V频率
CC
（赫兹）
转换电流
与输出数据速率
1000
900
V
REF
= V
CC
IN
+
= GND
IN
–
= GND
SCK = NC
SDO = NC
SDI = GND
CS = GND
F
O
= EXT OSC
T
A
= 25°C
6
V
CC
= 5V
5
电源电流（ μA ）
800
700
600
500
400
300
200
100
0
睡眠模式电流（ μA ）
10 20 30 40 50 60 70 80 90 100
输出数据速率（读数/秒）
24301 G26
8
ü W
24301 G20
24301 G23
满量程误差VS V
CC
5
4
3
2
+ FS错误
V
REF
= 2.5V
REF
–
= GND
F
O
= GND
V
INCM
= 0.5V
REF
T
A
= 25°C
0
–20
–40
–60
–80
–100
–120
–140
PSRR VS在V频率
CC
V
CC
= 4.1V
DC
±1.4V
REF
+
= 2.5V
REF
–
= GND
IN
+
= GND
IN
–
= GND
F
O
= GND
T
A
= 25°C
0 20 40 60 80 100 120 140 160 180 200 220
在V频率
CC
（赫兹）
24301 G22
24301 G21
PSRR VS在V频率
CC
0
–20
–40
–60
–80
–100
–120
–140
15170
V
CC
= 4.1V
DC
±0.7V
REF
+
= 2.5V
REF
–
= GND
IN
+
= GND
IN
–
= GND
F
O
= GND
T
A
= 25°C
240
230
220
210
200
190
180
170
转换电流与温度
V
CC
= 5.5V
V
CC
= 5V
F
O
= GND
CS = GND
SCK = NC
SDO = NC
V
CC
= 3V
V
CC
= 2.7V
1M
15220
15320
在V频率
CC
（赫兹）
15270
15370
24301 G24
160
–45 –30 –15
0 15 30 45 60
温度（℃）
75
90
24301 G25
睡眠模式电流
与温度
F
O
= GND
CS = V
CC
SCK = NC
SDO = NC
4
3
2
1
V
CC
= 5.5V
V
CC
= 5V
V
CC
= 3V
V
CC
= 3V
V
CC
= 2.7V
0
–45 –30 –15
0 15 30 45 60
温度（℃）
75
90
24301 G27
24301f
