LTC2480
2480fd
Typical perForMance characTerisTics
Integral Nonlinearity
(VCC = 5V, VREF = 5V)
Integral Nonlinearity
(VCC = 5V, VREF = 2.5V)
Integral Nonlinearity
(VCC = 2.7V, VREF = 2.5V)
Total Unadjusted Error
(VCC = 5V, VREF = 5V)
Total Unadjusted Error
(VCC = 5V, VREF = 2.5V)
Total Unadjusted Error
(VCC = 2.7V, VREF = 2.5V)
Noise Histogram (6.8sps)
Noise Histogram (7.5sps)
Long-Term ADC Readings
INPUT VOLTAGE (V)
–12
TUE
(ppm
OF
V
REF
)
–4
4
12
–8
0
8
–1.5
–0.5
0.5
1.5
2480 G01
2.5
–2
–2.5
–1
0
1
2
VCC = 5V
VREF = 5V
VIN(CM) = 2.5V
fO = GND
85°C
25°C
–45°C
INPUT VOLTAGE (V)
–12
TUE
(ppm
OF
V
REF
)
–4
4
12
–8
0
8
–0.75
–0.25
0.25
0.75
2480 G02
1.25
–1.25
VCC = 5V
VREF = 5V
VIN(CM) = 1.25V
fO = GND
85°C
25°C
–45°C
INPUT VOLTAGE (V)
–12
TUE
(ppm
OF
V
REF
)
–4
4
12
–8
0
8
–0.75
–0.25
0.25
0.75
2480 G03
1.25
–1.25
VCC = 2.7V
VREF = 2.5V
VIN(CM) = 1.25V
fO = GND
85°C
25°C
–45°C
INPUT VOLTAGE (V)
–3
INL
(ppm
OF
V
REF
)
–1
1
3
–2
0
2
–1.5
–0.5
0.5
1.5
2480 G04
2.5
–2
–2.5
–1
0
1
2
VCC = 5V
VREF = 5V
VIN(CM) = 2.5V
fO = GND
85°C
–45°C
25°C
INPUT VOLTAGE (V)
–3
INL
(ppm
OF
V
REF
)
–1
1
3
–2
0
2
–0.75
–0.25
0.25
0.75
2480 G05
1.25
–1.25
VCC = 5V
VREF = 2.5V
VIN(CM) = 1.25V
fO = GND
–45°C, 25°C, 90°C
INPUT VOLTAGE (V)
–3
INL
(ppm
OF
V
REF
)
–1
1
3
–2
0
2
–0.75
–0.25
0.25
0.75
2480 G06
1.25
–1.25
VCC = 2.7V
VREF = 2.5V
VIN(CM) = 1.25V
fO = GND
–45°C, 25°C, 90°C
OUTPUT READING (V)
–3
NUMBER
OF
READINGS
(%)
8
10
12
0.6
2480 G07
6
4
–1.8
–0.6
–2.4
1.2
–1.2
0
1.8
2
0
14
10,000 CONSECUTIVE
READINGS
VCC = 5V
VREF = 5V
VIN = 0V
GAIN = 256
TA = 25°C
RMS = 0.60V
AVERAGE = –0.69V
OUTPUT READING (V)
–3
NUMBER
OF
READINGS
(%)
8
10
12
0.6
2480 G08
6
4
–1.8
–0.6
–2.4
1.2
–1.2
0
1.8
2
0
14
10,000 CONSECUTIVE
READINGS
VCC = 2.7V
VREF = 2.5V
VIN = 0V
GAIN = 256
TA = 25°C
RMS = 0.59V
AVERAGE = –0.19V
TIME (HOURS)
0
–5
ADC
READING
(V)
–3
–1
1
10
20
30
40
2480 G09
50
3
5
–4
–2
0
2
4
60
VCC = 5V, VREF = 5V, VIN = 0V, VIN(CM) = 2.5V
GAIN = 256, TA = 25°C, RMS NOISE = 0.60V