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參數(shù)資料
| 型號(hào)： | DC571A |
| 廠商： | Linear Technology |
| 文件頁(yè)數(shù)： | 46/48頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | BOARD DELTA SIGMA ADC LTC2418 |
| 軟件下載： | QuikEval System |
| 設(shè)計(jì)資源： | DC571A Design File DC571A Schematic |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | QuikEval™ |
| ADC 的數(shù)量： | 1 |
| 位數(shù)： | 24 |
| 采樣率（每秒）： | 7.5 |
| 數(shù)據(jù)接口： | MICROWIRE?，串行，SPI? |
| 工作溫度： | 0°C ~ 70°C |
| 已用 IC / 零件： | LTC2418 |
| 已供物品： | 板 |
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LTC2414/LTC2418
7
241418fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Total Unadjusted Error
(VCC = 5V, VREF = 5V)
Total Unadjusted Error
(VCC = 5V, VREF = 2.5V)
Total Unadjusted Error
(VCC = 2.7V, VREF = 2.5V)
Integral Nonlinearity
(VCC = 5V, VREF = 5V)
Integral Nonlinearity
(VCC = 5V, VREF = 2.5V)
Integral Nonlinearity
(VCC = 2.7V, VREF = 2.5V)
Noise Histogram
(VCC = 5V, VREF = 5V)
Noise Histogram
(VCC = 2.7V, VREF = 2.5V)
Long Term ADC Readings
INPUT VOLTAGE (V)
–2.5 –2.0
–1.0
0
1.0
2.0
TUE
(ppm
OF
V
REF
)
3
2
1
0
–1
–2
–3
–1.5
–0.5
0.5
1.5
241418 G01
2.5
FO = GND
VCC = 5V
VREF = 5V
VINCM = VREFCM = 2.5V
TA = 25°C
TA = –45°C
TA = 85°C
INPUT VOLTAGE (V)
–1.25
TUE
(ppm
OF
V
REF
)
3
2
1
0
–1
–2
–3
–0.75
–0.25
0.25
0.75
241418 G02
1.25
FO = GND
VCC = 5V
VREF = 2.5V
VINCM = VREFCM = 1.25V
TA = 25°C
TA = 85°C
TA = –45°C
INPUT VOLTAGE (V)
–1.25
TUE
(ppm
OF
V
REF
)
–0.75
–0.25
0.25
0.75
241418 G03
1.25
8
6
4
2
0
–2
–4
–6
–8
FO = GND
VCC = 2.7V
VREF = 2.5V
VINCM = VREFCM = 1.25V
TA = 85°C
TA = –45°C
TA = 25°C
INPUT VOLTAGE (V)
–2.5 –2.0
–1.0
0
1.0
2.0
INL
(ppm
OF
V
REF
)
3
2
1
0
–1
–2
–3
–1.5
–0.5
0.5
1.5
241418 G04
2.5
FO = GND
VCC = 5V
VREF = 5V
VINCM = VREFCM = 2.5V
TA = 25°C
TA = –45°C
TA = 85°C
INPUT VOLTAGE (V)
INL
(ppm
OF
V
REF
)
3
2
1
0
–1
–2
–3
241418 G05
FO = GND
VCC = 5V
VREF = 2.5V
VINCM = VREFCM = 1.25V
TA = 25°C
TA = 85°C
TA = –45°C
–1.25
–0.75
–0.25
0.25
0.75
1.25
INPUT VOLTAGE (V)
–1.25
INL
(ppm
OF
V
REF
)
–0.75
–0.25
0.25
0.75
241418 G06
1.25
8
6
4
2
0
–2
–4
–6
–8
FO = GND
VCC = 2.7V
VREF = 2.5V
VINCM = VREFCM = 1.25V
TA = 85°C
TA = –45°C
TA = 25°C
OUTPUT CODE (ppm OF VREF)
–1.2
NUMBER
OF
READINGS
(%)
30
25
20
15
10
5
0
–0.6
0
241418 G07
0.6
10,000 CONSECUTIVE READINGS
FO = GND
TA = 25°C
VCC = 5V
VREF = 5V
VIN = 0V
VINCM = 2.5V
GAUSSIAN
DISTRIBUTION
m = –0.24ppm
σ = 0.183ppm
OUTPUT CODE (ppm OF VREF)
NUMBER
OF
READINGS
(%)
14
12
10
8
6
4
2
0
241418 G08
–2.4
–1.8
–1.2
–0.6
0
0.6
1.2
10,000 CONSECUTIVE READINGS
FO = GND
TA = 25°C
VCC = 2.7V
VREF = 2.5V
VIN = 0V
VINCM = 2.5V
GAUSSIAN
DISTRIBUTION
m = –0.48ppm
σ = 0.375ppm
TIME (HOURS)
0
ADC
READING
(ppm
OF
V
REF
)
1.0
0.5
0
–0.5
–1.0
–1.5
10
20
30
40
LTXXXX TPCXX
50
60
RMS NOISE = 0.19ppm
FO = GND
TA = 25°C
VCC = 5V
VREF = 5V
VIN = 0V
VINCM = 2.5V
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