Datasheet
LTC2411/LTC2411-1
6
Total Unadjusted Error
(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
)
2411 G01
3
2
1
0
–1
–2
–3
T
A
= 25°C
V
CC
= 5V
REF
+
= 5V
REF
–
= GND
V
INCM
= 2.5V
F
O
= GND
T
A
= –45°C
T
A
= 90°C
V
IN
(V)
–1.25 –0.75 –0.25 0.25 0.75 1.25
TUE (ppm OF V
REF
)
2411 G02
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
V
CC
= 5V
REF
+
= 2.5V
REF
–
= GND
V
INCM
= 2.5V
F
O
= GND
T
A
= –45°C
T
A
= 90°C
T
A
= 25°C
V
IN
(V)
–1.25
TUE (ppm OF V
REF
)
2
6
10
0.75
2411 G03
–2
–6
0
4
8
–4
–8
–10
–0.75
–0.25
0.25
1.25
T
A
= 90°C
V
CC
= 2.7V
REF
+
= 2.5V
REF
–
= GND
V
INCM
= 1.25V
F
O
= GND
T
A
= –45°C
T
A
= 25°C
Total Unadjusted Error
(V
CC
= 5V, V
REF
= 2.5V)
Total Unadjusted Error
(V
CC
= 2.7V, V
REF
= 2.5V)
Integral Nonlinearity
(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
INL (ppm OF V
REF
)
2411 G04
3
2
1
0
–1
–2
–3
T
A
= 25°C
T
A
= 90°C
V
CC
= 5V
REF
+
= 5V
REF
–
= GND
V
INCM
= 2.5V
F
O
= GND
T
A
= –45°C
Integral Nonlinearity
(V
CC
= 5V, V
REF
= 2.5V)
Integral Nonlinearity
(V
CC
= 2.7V, V
REF
= 2.5V)
V
IN
(V)
–1.25 –0.75 –0.25 0.25 0.75 1.25
INL (ppm OF V
REF
)
2411 G01
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
V
CC
= 5V
REF
+
= 2.5V
REF
–
= GND
V
INCM
= 2.5V
F
O
= GND
T
A
= 90°C
T
A
= –45°C
T
A
= 25°C
V
IN
(V)
–1.25
INL (ppm OF V
REF
)
2
6
10
0.75
2411 G06
–2
–6
0
4
8
–4
–8
–10
–0.75
–0.25
0.25
1.25
T
A
= 90°C
V
CC
= 2.7V
REF
+
= 2.5V
REF
–
= GND
V
INCM
= 1.25V
F
O
= GND
T
A
= –45°C
T
A
= 25°C
Noise Histogram
OUTPUT CODE (ppm OF V
REF
)
–2.0
NUMBER OF READINGS (%)
6
8
10
–0.5
0.5
2411 G07
4
2
0
–1.5 –1.0 0
12
14
16
1
10,000 CONSECUTIVE
READINGS
V
CC
= 5V
V
REF
= 5V
V
IN
= 0V
V
INCM
= 2.5V
F
O
= GND
T
A
= 25°C
GAUSSIAN
DISTRIBUTION
m = –0.647ppm
σ = 0.287ppm
TIME (HOURS)
0
–2.0
ADC READING (ppm OF V
REF
)
–1.5
–1.0
–0.5
0
1.0
5
10 15 20
2411 G08
25 30 35 40 45 50 55 60
0.5
V
CC
= 5V, V
REF
= 5V, V
IN
= 0V, V
INCM
= 2.5V,
F
O
= GND, T
A
= 25°C, RMS NOISE = 0.29ppm
Long Term ADC Readings
INPUT DIFFERENTIAL VOLTAGE (V)
–2.5 –2 –1.5 –1 –0.5 0 0.5 1 1.5 2 2.5
RMS NOISE (ppm OF V
REF
)
2411 G09
0.5
0.4
0.3
0.2
0.1
0
T
A
= 25°C
V
CC
= 5V
V
REF
= 5V
V
INCM
= 2.5V
F
O
= GND
RMS Noise
vs Input Differential Voltage
TYPICAL PERFOR A CE CHARACTERISTICS
UW