Datasheet
LTC2412
6
2412f
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Total Unadjusted Error vs
Temperature (V
CC
= 2.7V,
V
REF
= 2.5V)
Total Unadjusted Error vs
Temperature (V
CC
= 5V,
V
REF
= 2.5V)
Total Unadjusted Error vs
Temperature (V
CC
= 5V,
V
REF
= 5V)
Integral Nonlinearity vs
Temperature (V
CC
= 2.7V,
V
REF
= 2.5V)
Integral Nonlinearity vs
Temperature (V
CC
= 5V,
V
REF
= 2.5V)
Integral Nonlinearity vs
Temperature (V
CC
= 5V,
V
REF
= 5V)
Noise Histogram (Output Rate =
52.5Hz, V
CC
= 5V, V
REF
= 5V)
Noise Histogram (Output Rate =
22.5Hz, V
CC
= 5V, V
REF
= 5V)
Noise Histogram (Output Rate =
7.5Hz, V
CC
= 5V, V
REF
= 5V)
V
IN
(V)
–2.5 –2 –1.5 –1 –0.5 0 0.5 1 1.5 2 2.5
TUE (ppm OF V
REF
)
2412 G01
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
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
V
IN
(V)
–1 –0.5 0 0.5 1
TUE (ppm OF V
REF
)
2412 G02
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
V
CC
= 5V
REF
+
= 2.5V
REF
–
= GND
V
REF
= 2.5V
V
INCM
= 1.25V
F
O
= GND
T
A
= 90°C
T
A
= 25°C
T
A
= –45°C
V
IN
(V)
–1 –0.5 0 0.5 1
TUE (ppm OF V
REF
)
2412 G03
10
8
6
4
2
0
–2
–4
–6
–8
–10
V
CC
= 2.7V
REF
+
= 2.5V
REF
–
= GND
V
REF
= 2.5V
V
INCM
= 1.25V
F
O
= GND
T
A
= 90°C
T
A
= 25°C
T
A
= –45°C
V
IN
(V)
–2.5 –2 –1.5 –1 –0.5 0 0.5 1 1.5 2 2.5
INL ERROR (ppm OF V
REF
)
2412 G04
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
V
CC
= 5V
REF
+
= 5V
REF
–
= GND
V
REF
= 5V
V
INCM
= 2.5V
F
O
= GND
T
A
= –45°C
T
A
= 25°C
T
A
= 90°C
V
IN
(V)
–1 –0.5 0 0.5 1
INL ERROR (ppm OF V
REF
)
2412 G05
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
V
CC
= 5V
REF
+
= 2.5V
REF
–
= GND
V
REF
= 2.5V
V
INCM
= 1.25V
F
O
= GND
T
A
= 25°C
T
A
= –45°C
T
A
= 90°C
V
IN
(V)
–1 –0.5 0 0.5 1
INL ERROR (ppm OF V
REF
)
2412 G06
10
8
6
4
2
0
–2
–4
–6
–8
–10
V
REF
= 2.5V
V
INCM
= 1.25V
F
O
= GND
V
CC
= 2.7V
REF
+
= 2.5V
REF
–
= GND
T
A
= 25°C
T
A
= –45°C
T
A
= 90°C
OUTPUT CODE (ppm OF V
REF
)
–0.8
–0.6 –0.4 –0.2 0 0.2 0.4 0.6 0.8
NUMBER OF READINGS (%)
2412 G07
12
10
8
6
4
2
0
10,000 CONSECUTIVE
READINGS
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
GAUSSIAN
DISTRIBUTION
m = 0.105ppm
σ = 0.153ppm
OUTPUT CODE (ppm OF V
REF
)
–0.8
–0.6 –0.4 –0.2 0 0.2 0.4 0.6 0.8
NUMBER OF READINGS (%)
2412 G08
12
10
8
6
4
2
0
10,000 CONSECUTIVE
READINGS
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
GAUSSIAN
DISTRIBUTION
m = 0.067ppm
σ = 0.151ppm
OUTPUT CODE (ppm OF V
REF
)
–9.8
–9.4 –9 –8.6 –8.2 –7.8 –7.4 –7 –6.6
NUMBER OF READINGS (%)
2412 G09
12
10
8
6
4
2
0
10,000 CONSECUTIVE
READINGS
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
GAUSSIAN
DISTRIBUTION
m = 8.285ppm
σ = 0.311ppm