LTC2412
典型PERFOR一个CE特征
总非调整误差VS
温度（V
CC
= 5V,
V
REF
= 5V)
1.5
1.0
TUE （ ppm的V型
REF
)
TUE （ ppm的V型
REF
)
TUE （ ppm的V型
REF
)
0.5
0
–0.5
–1.0
V
CC
= 5V
REF
+
= 5V
REF
–
= GND
V
REF
= 5V
V
INCM
= 2.5V
F
O
= GND
T
A
= 90°C
T
A
= 25°C
T
A
= –45°C
–1.5
–2.5 –2 –1.5 –1 –0.5 0 0.5
V
IN
(V)
1
积分非线性VS
温度（V
CC
= 5V,
V
REF
= 5V)
1.5
1.0
INL误差（ ppm的V型
REF
)
INL误差（ ppm的V型
REF
)
0.5
0
–0.5
–1.0
0.5
0
V
CC
= 5V
REF
+
= 2.5V
REF
–
= GND
V
REF
= 2.5V
V
INCM
= 1.25V
F
O
= GND
–1
–0.5
T
A
= 25°C
T
A
= 90°C
INL误差（ ppm的V型
REF
)
V
CC
= 5V
REF
+
= 5V
REF
–
= GND
V
REF
= 5V
V
INCM
= 2.5V
F
O
= GND
T
A
= –45°C
1.0
T
A
= 25°C
T
A
= –45°C
–1.5
–2.5 –2 –1.5 –1 –0.5 0 0.5
V
IN
(V)
1
噪声直方图（输出率=
7.5Hz ，V
CC
= 5V, V
REF
= 5V)
12
10
8
6
4
2
0
–0.8 –0.6 –0.4 –0.2 0 0.2 0.4 0.6
输出代码（ ppm的V型
REF
)
万CONSECUTIVE
读
V
CC
= 5V
V
REF
= 5V
V
IN
= 0V
REF
+
= 5V
REF
–
= GND
IN
+
= 2.5V
IN
–
= 2.5V
F
O
= GND
T
A
= 25°C
高斯
分配
M = 0.105ppm
σ
= 0.153ppm
12
10
8
6
4
2
读数的数目（％ ）
读数的数目（％ ）
读数的数目（％ ）
6
ü W
1.5
2
2412 G01
总非调整误差VS
温度（V
CC
= 5V,
V
REF
= 2.5V)
1.5
1.0
0.5
0
T
A
= 90°C
T
A
= 25°C
T
A
= –45°C
V
CC
= 5V
REF
+
= 2.5V
REF
–
= GND
V
REF
= 2.5V
V
INCM
= 1.25V
F
O
= GND
10
8
6
4
2
0
–2
–4
–6
–8
2.5
–1.5
–1
–0.5
0
V
IN
(V)
0.5
1
2412 G02
总非调整误差VS
温度（V
CC
= 2.7V,
V
REF
= 2.5V)
T
A
= 90°C
T
A
= 25°C
V
CC
= 2.7V
REF
+
= 2.5V
REF
–
= GND
V
REF
= 2.5V
V
INCM
= 1.25V
F
O
= GND
–1
–0.5
0
V
IN
(V)
–0.5
–1.0
T
A
= –45°C
–10
0.5
1
2412 G03
积分非线性VS
温度（V
CC
= 5V,
V
REF
= 2.5V)
1.5
10
8
6
4
2
0
–2
–4
–6
–8
0
V
IN
(V)
0.5
1
2412 G05
积分非线性VS
温度（V
CC
= 2.7V,
V
REF
= 2.5V)
V
CC
= 2.7V V
REF
= 2.5V
REF
+
= 2.5V V
INCM
= 1.25V
REF
–
= GND F
O
= GND
T
A
= 90°C
–0.5
–1.0
–1.5
T
A
= 90°C
T
A
= 25°C
T
A
= –45°C
1.5
2
2.5
–10
–1
–0.5
0
V
IN
(V)
0.5
1
2412 G06
2412 G04
噪声直方图（输出率=
22.5Hz ，V
CC
= 5V, V
REF
= 5V)
万CONSECUTIVE
读
V
CC
= 5V
V
REF
= 5V
V
IN
= 0V
REF
+
= 5V
REF
–
= GND
IN
+
= 2.5V
IN
–
= 2.5V
F
O
= 460800Hz
T
A
= 25°C
高斯
分配
M = 0.067ppm
σ
= 0.151ppm
12
10
8
6
4
2
噪声直方图（输出率=
52.5Hz ，V
CC
= 5V, V
REF
= 5V)
万CONSECUTIVE
读
V
CC
= 5V
V
REF
= 5V
V
IN
= 0V
REF
+
= 5V
REF
–
= GND
IN
+
= 2.5V
IN
–
= 2.5V
F
O
= 1075200Hz
T
A
= 25°C
高斯
分配
M = 8.285ppm
σ
= 0.311ppm
0.8
0
–0.8 –0.6 –0.4 –0.2 0 0.2 0.4 0.6
输出代码（ ppm的V型
REF
)
0.8
0
–9.8 –9.4 –9 –8.6 –8.2 –7.8 –7.4 –7 –6.6
输出代码（ ppm的V型
REF
)
2412 G09
2412 G07
2412 G08
2412f
