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参数资料
型号： DC939A
厂商： Linear Technology
文件页数： 23/42页
文件大小： 0K
描述： BOARD DELTA SIGMA ADC LTC2484
软件下载： QuikEval System
设计资源： DC939A Design File
DC939A Schematic
标准包装： 1
系列： Easy Drive™, QuikEval™
ADC 的数量： 1
位数： 24
采样率（每秒）： 6.8
数据接口： MICROWIRE?，串行，SPI?
工作温度： 0°C ~ 70°C
已用 IC / 零件： LTC2484
已供物品： 板
相关产品： LTC2484CDD#TRPBF-ND - IC ADC 24BIT 10-DFN
LTC2484IDD#TRPBF-ND - IC ADC 24BIT 10-DFN
LTC2484IDD#PBF-ND - IC ADC 24BIT 10-DFN
LTC2484CDD#PBF-ND - IC ADC 24BIT 10-DFN
LTC2484
3
2484fd
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Resolution (No Missing Codes)
0.1 ≤ VREF ≤ VCC, –FS ≤ VIN ≤ +FS (Note 5)
l
24
Bits
Integral Nonlinearity
5V ≤ VCC ≤ 5.5V, VREF = 5V, VIN(CM) = 2.5V (Note 6)
2.7V ≤ VCC ≤ 5.5V, VREF = 2.5V, VIN(CM) = 1.25V (Note 6)
l
2
1
10
ppm of VREF
Offset Error
2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Note 14)
l
0.5
2
mV
Offset Error Drift
2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC
100
nV/°C
Positive Full-Scale Error
2.5V ≤ VREF ≤ VCC, IN+ = 0.75VREF, IN– = 0.25VREF
l
25
ppm of VREF
Positive Full-Scale Error Drift
2.5V ≤ VREF ≤ VCC, IN+ = 0.75VREF, IN– = 0.25VREF
0.1
ppm of
VREF/°C
Negative Full-Scale Error
2.5V ≤ VREF ≤ VCC, IN+ = 0.75VREF, IN– = 0.25VREF
l
25
ppm of VREF
Negative Full-Scale Error Drift
2.5V ≤ VREF ≤ VCC, IN+ = 0.75VREF, IN– = 0.25VREF
0.1
ppm of
VREF/°C
Output Noise
5V ≤ VCC ≤ 5.5V, VREF = 5V, GND ≤ IN– = IN+ ≤ VCC (Note 13)
0.84
μVRMS
CONVERTER CHARACTERISTICS The l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. (Notes 3, 4)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Input Common Mode Rejection DC
2.5V ≤ VREF ≤ VCC, GND ≤ IN– = IN+ ≤ VCC (Note 5)
l
140
dB
Input Common Mode Rejection
50Hz ±2%
2.5V ≤ VREF ≤ VCC, GND ≤ IN– = IN+ ≤ VCC (Note 5)
l
140
dB
Input Common Mode Rejection
60Hz ±2%
2.5V ≤ VREF ≤ VCC, GND ≤ IN– = IN+ ≤ VCC (Note 5)
l
140
dB
Input Normal Mode Rejection
50Hz ±2%
2.5V ≤ VREF ≤ VCC, GND ≤ IN– = IN+ ≤ VCC (Notes 5, 7)
l
110
120
dB
Input Normal Mode Rejection
60Hz ±2%
2.5V ≤ VREF ≤ VCC, GND ≤ IN– = IN+ ≤ VCC (Notes 5, 8)
l
110
120
dB
Input Normal Mode Rejection
50Hz/60Hz ±2%
2.5V ≤ VREF ≤ VCC, GND ≤ IN– = IN+ ≤ VCC (Notes 5, 9)
l
87
dB
Reference Common Mode
Rejection DC
2.5V ≤ VREF ≤ VCC, GND ≤ IN– = IN+ ≤ VCC (Note 5)
l
120
140
dB
Power Supply Rejection DC
VREF = 2.5V, IN– = IN+ = GND
120
dB
Power Supply Rejection, 50Hz ±2%
VREF = 2.5V, IN– = IN+ = GND (Note 7)
120
dB
Power Supply Rejection, 60Hz ±2%
VREF = 2.5V, IN– = IN+ = GND (Note 8)
120
dB
ANALOG INPUT AND REFERENCE The l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. (Note 3)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IN+
Absolute/Common Mode IN+ Voltage
GND – 0.3V
VCC + 0.3V
V
IN–
Absolute/Common Mode IN– Voltage
GND – 0.3V
VCC + 0.3V
V
FS
Full-Scale of the Differential Input (IN+ – IN–)
l
0.5VREF
V
LSB
Least Signicant Bit of the Output Code
l
FS/224
VIN
Input Differential Voltage Range (IN+ – IN–)
l
–FS
+FS
V
VREF
Reference Voltage Range
l
0.1
VCC
V
ELECTRICAL CHARACTERISTICS (2x SPEED) The l denotes the specications which apply over the
full operating temperature range, otherwise specications are at TA = 25°C. (Notes 3, 4)
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