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参数资料
型号： DC790A
厂商： Linear Technology
文件页数： 22/28页
文件大小： 0K
描述： BOARD DELTA SIGMA ADC LTC2439-1
软件下载： QuikEval System
设计资源： DC790A Design File
DC790A Schematic
标准包装： 1
系列： QuikEval™
ADC 的数量： 1
位数： 16
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： LTC2439-1
已供物品： 板
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LTC2439-1
3
24391fa
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Total Unadjusted Error
5V
≤ VCC ≤ 5.5V, REF+ = 2.5V, REF– = GND, VINCM = 1.25V
0.20
LSB
5V
≤ VCC ≤ 5.5V, REF+ = 5V, REF– = GND, VINCM = 2.5V
0.20
LSB
REF+ = 2.5V, REF– = GND, VINCM = 1.25V, (Note 6)
Output Noise
5V
≤ VCC ≤ 5.5V, REF+ = 5V, VREF– = GND,
1
VRMS
GND
≤ IN– = IN+ ≤ 5V (Note 12)
Input Common Mode Rejection DC
2.5V
≤ REF+ ≤ VCC, REF– = GND,
●
130
140
dB
GND
≤ IN– = IN+ ≤ VCC (Note 5)
Input Common Mode Rejection
2.5V
≤ REF+ ≤ VCC, REF– = GND,
●
140
dB
49Hz to 61.2Hz
GND
≤ IN– = IN+ ≤ VCC, (Note 5)
Input Normal Mode Rejection
(Note 5)
●
87
dB
49Hz to 61.2Hz
Reference Common Mode
2.5V
≤ REF+ ≤ VCC, GND ≤ REF– ≤ 2.5V,
●
130
140
dB
Rejection DC
VREF = 2.5V, IN– = IN+ = GND (Note 5)
Power Supply Rejection, DC
REF+ = 2.5V, REF– = GND, IN– = IN+ = GND
120
dB
Power Supply Rejection,
REF+ = 2.5V, REF– = GND, IN– = IN+ = GND
120
dB
Simultaneous 50Hz/60Hz
±2%
The
● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Notes 3, 4)
CO VERTER CHARACTERISTICS
U
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IN+
Absolute/Common Mode IN+ Voltage
●
GND – 0.3
VCC + 0.3
V
IN–
Absolute/Common Mode IN– Voltage
●
GND – 0.3
VCC + 0.3
V
VIN
Input Differential Voltage Range
●
–VREF/2
VREF/2
V
(IN+ – IN–)
REF+
Absolute/Common Mode REF+ Voltage
●
0.1
VCC
V
REF–
Absolute/Common Mode REF– Voltage
●
GND
VCC – 0.1
V
VREF
Reference Differential Voltage Range
●
0.1
VCC
V
(REF+ – REF–)
CS (IN+)IN+ Sampling Capacitance
18
pF
CS (IN–)IN– Sampling Capacitance
18
pF
CS (REF
+)REF+ Sampling Capacitance
18
pF
CS (REF
–)REF– Sampling Capacitance
18
pF
IDC_LEAK (IN
+)IN+ DC Leakage Current
CS = VCC = 5.5V, IN
+ = GND
●
–100
1
100
nA
IDC_LEAK (IN–)IN– DC Leakage Current
CS = VCC = 5.5V, IN– = 5V
●
–100
1
100
nA
IDC_LEAK (REF+)REF+ DC Leakage Current
CS = VCC = 5.5V, REF+ = 5V
●
–100
1
100
nA
IDC_LEAK (REF–)REF– DC Leakage Current
CS = VCC = 5.5V, REF– = GND
●
–100
1
100
nA
Off Channel to On Channel Isolation
DC
140
dB
(RIN = 100)
1Hz
140
dB
fS = 15,3600Hz
140
dB
tOPEN
MUX Break-Before-Make Interval
2.7V
≤ VCC ≤ 5.5V
100
ns
IS(OFF)
Channel Off Leakage Current
Channel at VCC and GND
●
–100
1
100
nA
The
● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 3)
A ALOG I PUT A D REFERE CE
U
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