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LTC2412IGN Datasheet(PDF) 7 Page - Linear Technology

No. de pieza LTC2412IGN
Descripción Electrónicos  2-Channel Differential Input 24-Bit No Latency DS ADC
PDF  36 Pages
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Fabricante Electrónico  LINER [Linear Technology]
Página de inicio  http://www.linear.com
Logo LINER - Linear Technology

LTC2412IGN Datasheet(HTML) 7 Page - Linear Technology

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LTC2412
7
2412f
TYPICAL PERFOR A CE CHARACTERISTICS
OUTPUT CODE (ppm OF VREF)
–1.6
–0.8
0
0.8
1.6
2412 G10
12
10
8
6
4
2
0
10,000 CONSECUTIVE
READINGS
VCC = 5V
VREF = 2.5V
VIN = 0V
REF + = 2.5V
REF – = GND
IN+ = 1.25V
IN– = 1.25V
FO = GND
TA = 25°C
GAUSSIAN
DISTRIBUTION
m = 0.033ppm
σ = 0.293ppm
OUTPUT CODE (ppm OF VREF)
–1.6 –1.2 –0.8 –0.4
0
0.4
0.8
1.2
1.6
2410 G11
12
10
8
6
4
2
0
10,000 CONSECUTIVE
READINGS
VCC = 5V
VREF = 2.5V
VIN = 0V
REF + = 2.5V
REF – = GND
IN+ = 1.25V
IN– = 1.25V
FO = 460800Hz
TA = 25°C
GAUSSIAN
DISTRIBUTION
m = 0.014ppm
σ = 0.292ppm
OUTPUT CODE (ppm OF VREF)
–5.5 –5.1 –4.7 –4.3 –3.9 –3.5 –3.1 –2.7 –2.3
2412 G12
12
10
8
6
4
2
0
10,000 CONSECUTIVE
READINGS
VCC = 5V
VREF = 2.5V
VIN = 0V
REF + = 2.5V
REF – = GND
IN+ = 1.25V
IN– = 1.25V
FO = 1075200Hz
TA = 25°C
GAUSSIAN
DISTRIBUTION
m = 3.852ppm
σ = 0.326ppm
OUTPUT CODE (ppm OF VREF)
–1.6 –1.2 –0.8 –0.4
0
0.4
0.8
1.2
1.6
2412 G13
12
10
8
6
4
2
0
10,000 CONSECUTIVE
READINGS
VCC = 2.7V
VREF = 2.5V
VIN = 0V
REF + = 2.5V
REF – = GND
IN+ = 1.25V
IN– = 1.25V
FO = GND
TA = 25°C
GAUSSIAN
DISTRIBUTION
m = 0.079ppm
σ = 0.298ppm
OUTPUT CODE (ppm OF VREF)
–1.6 –1.2 –0.8 –0.4
0
0.4
0.8
1.2
1.6
2412 G14
12
10
8
6
4
2
0
10,000 CONSECUTIVE
READINGS
VCC = 2.7V
VREF = 2.5V
VIN = 0V
REF + = 2.5V
REF – = GND
IN+ = 1.25V
IN– = 1.25V
FO = 460800Hz
TA = 25°C
GAUSSIAN
DISTRIBUTION
m = 0.177ppm
σ = 0.297ppm
OUTPUT CODE (ppm OF VREF)
–10 –8.5 –7 –5.5 –4 –2.5 –1
0.5
2
2412 G15
10
9
8
7
6
5
4
3
2
1
0
10,000 CONSECUTIVE
READINGS
VCC = 2.7V
VREF = 2.5V
VIN = 0V
REF + = 2.5V
REF – = GND
IN+ = 1.25V
IN– = 1.25V
FO = 1075200Hz
TA = 25°C
GAUSSIAN
DISTRIBUTION
m = 3.714ppm
σ = 1.295ppm
OUTPUT CODE (ppm OF VREF)
–0.8 –0.6 –0.4 –0.2
0
0.2
0.4
0.6
0.8
2412 G16
12
10
8
6
4
2
0
ADC CONSECUTIVE
READINGS
VCC = 5V
VREF = 5V
VIN = 0V
REF + = 5V
REF – = GND
IN+ = 2.5V
IN– = 2.5V
FO = GND
TA = 25°C
GAUSSIAN DISTRIBUTION
m = 0.101837ppm
σ = 0.154515ppm
TIME (HOURS)
0
5 10 15 20 25 30 35 40 45 50 55 60
2412 G17
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
VCC = 5V
VREF = 5V
VIN = 0V
FO = GND
TA = 25°C
REF + = 5V
REF – = GND
IN+ = 2.5V
IN– = 2.5V
INPUT DIFFERENTIAL VOLTAGE (V)
–2.5 –2 –1.5 –1 –0.5 0
0.5
1
1.5
2
2.5
2412 G18
0.5
0.4
0.3
0.2
0.1
0
VCC = 5V
VREF = 5V
REF + = 5V
REF – = GND
VINCM = 2.5V
FO = GND
TA = 25°C
Noise Histogram (Output Rate =
52.5Hz, VCC = 5V, VREF = 2.5V)
Noise Histogram (Output Rate =
22.5Hz, VCC = 5V, VREF = 2.5V)
Noise Histogram (Output Rate =
7.5Hz, VCC = 5V, VREF = 2.5V)
Noise Histogram (Output Rate =
52.5Hz, VCC = 2.7V, VREF = 2.5V)
Noise Histogram (Output Rate =
22.5Hz, VCC = 2.7V, VREF = 2.5V)
Noise Histogram (Output Rate =
7.5Hz, VCC = 2.7V, VREF = 2.5V)
RMS Noise
vs Input Differential Voltage
Consecutive ADC Readings
vs Time
Long-Term Noise Histogram
(Time = 60 Hrs, VCC = 5V,
VREF = 5V)



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