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LTC2411-1IMS-PBF Просмотр технического описания (PDF) - Linear Technology

Номер в каталоге
Компоненты Описание
производитель
LTC2411-1IMS-PBF
24-Bit No Latency ∆Σ™ ADC with Differential Input and Reference in MSOP
Linear
Linear Technology Linear
LTC2411-1IMS-PBF Datasheet PDF : 40 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
LTC2411/LTC2411-1
TYPICAL PERFOR A CE CHARACTERISTICS
Total Unadjusted Error
(VCC = 5V, VREF = 5V)
3
2
TA = 90°C
1
TA = 25°C
0
–1
VCC
REF
=
+
5V
= 5V
–2 REF – = GND
VINCM = 2.5V
TA = –45°C
FO = GND
–3
–2.5 –2 –1.5 –1 –0.5 0 0.5 1 1.5 2 2.5
VIN (V)
2411 G01
Integral Nonlinearity
(VCC = 5V, VREF = 5V)
3
VCC
REF
=
+
5V
= 5V
2 REF – = GND
VINCM = 2.5V
1 FO = GND
TA = 25°C
TA = 90°C
0
TA = –45°C
–1
–2
–3
–2.5 –2 –1.5 –1 –0.5 0 0.5 1 1.5 2 2.5
VIN (V)
2411 G04
Total Unadjusted Error
(VCC = 5V, VREF = 2.5V)
1.5
1.0
0.5
TA = 25°C
TA = –45°C
0
–0.5
VCC
REF
=
+
5V
= 2.5V
–1.0 REF – = GND
VINCM = 2.5V
TA = 90°C
FO = GND
–1.5
–1.25 –0.75 –0.25 0.25 0.75 1.25
VIN (V)
2411 G02
Integral Nonlinearity
(VCC = 5V, VREF = 2.5V)
1.5
1.0
0.5
TA = 25°C
TA = –45°C
0
–0.5
VCC
REF
=
+
5V
= 2.5V
TA = 90°C
–1.0 REF – = GND
VINCM = 2.5V
FO = GND
–1.5
–1.25 –0.75 –0.25 0.25 0.75 1.25
VIN (V)
2411 G01
Noise Histogram
16
10,000 CONSECUTIVE
14
READINGS
VCC = 5V
12
VREF = 5V
VIN = 0V
10
VINCM = 2.5V
FO = GND
8 TA = 25°C
GAUSSIAN
DISTRIBUTION
m = –0.647ppm
σ = 0.287ppm
6
4
2
0
–2.0
–1.5 –1.0 –0.5 0 0.5 1
OUTPUT CODE (ppm OF VREF)
2411 G07
Long Term ADC Readings
1.0
VCC = 5V, VREF = 5V, VIN = 0V, VINCM = 2.5V,
FO = GND, TA = 25°C, RMS NOISE = 0.29ppm
0.5
0
–0.5
–1.0
–1.5
–2.0
0 5 10 15 20 25 30 35 40 45 50 55 60
TIME (HOURS)
2411 G08
Total Unadjusted Error
(VCC = 2.7V, VREF = 2.5V)
10
8
6
4
2
TA = 90°C
0
–2
–4
VCC
REF
=
+
2.7V
= 2.5V
–6 REF – = GND
TA = –45°C
–8 VINCM = 1.25V
FO = GND
TA = 25°C
–10
–1.25 – 0.75 – 0.25 0.25 0.75 1.25
VIN (V)
2411 G03
Integral Nonlinearity
(VCC = 2.7V, VREF = 2.5V)
10
8
6
4
2
TA = 90°C
0
–2
–4
VCC
REF
=
+
2.7V
= 2.5V
–6 REF – = GND
TA = –45°C
TA = 25°C
–8 VINCM = 1.25V
FO = GND
–10
–1.25 – 0.75 – 0.25 0.25
VIN (V)
0.75 1.25
2411 G06
RMS Noise
vs Input Differential Voltage
0.5
0.4
0.3
0.2
TA = 25°C
0.1
VCC = 5V
VREF = 5V
VINCM = 2.5V
FO = GND
0
–2.5 –2 –1.5 –1 –0.5 0 0.5 1 1.5 2 2.5
INPUT DIFFERENTIAL VOLTAGE (V)
2411 G09
6

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