參數(shù)資料
型號(hào): LTC2444
廠(chǎng)商: Linear Technology Corporation
英文描述: 24-Bit High Speed 8-/16-Channel ADCs with Selectable Speed/Resolution
中文描述: 24位ADC的高速8-/16-Channel可選速度/分辨率
文件頁(yè)數(shù): 3/28頁(yè)
文件大小: 270K
代理商: LTC2444
LTC2444/LTC2445/
LTC2448/LTC2449
3
sn2444589 2444589fs
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25
°
C. (Notes 3, 4)
PARAMETER
Resolution (No Missing Codes)
Integral Nonlinearity
CONDITIONS
0.1V
V
REF
V
CC
, –0.5 V
REF
V
IN
0.5 V
REF
, (Note 5)
V
CC
= 5V, REF
+
= 5V, REF
= GND, V
INCM
= 2.5V, (Note 6)
REF
+
= 2.5V, REF
= GND, V
INCM
= 1.25V, (Note 6)
2.5V
REF
+
V
CC
, REF
= GND,
GND
IN
+
= IN
V
CC
(Note 12)
2.5V
REF
+
V
CC
, REF
= GND,
GND
IN
+
= IN
V
CC
REF
+
= 5V, REF
= GND, IN
+
= 3.75V, IN
= 1.25V
REF
+
= 2.5V, REF
= GND, IN
+
= 1.875V, IN
= 0.625V
2.5V
REF
+
V
CC
, REF
= GND,
IN
+
= 0.75REF
+
, IN
= 0.25 REF
+
REF
+
= 5V, REF
= GND, IN
+
= 1.25V, IN
= 3.75V
REF
+
= 2.5V, REF
= GND, IN
+
= 0.625V, IN
= 1.875V
2.5V
REF
+
V
CC
, REF
= GND,
IN
+
= 0.25 REF
+
, IN
= 0.75 REF
+
5V
V
CC
5.5V, REF
+
= 2.5V, REF
= GND, V
INCM
= 1.25V
5V
V
CC
5.5V, REF
+
= 5V, REF
= GND, V
INCM
= 2.5V
REF
+
= 2.5V, REF
= GND, V
INCM
= 1.25V, (Note 6)
2.5V
REF
+
V
CC
, REF
= GND,
GND
IN
= IN
+
V
CC
MIN
24
TYP
MAX
UNITS
Bits
5
3
15
ppm of V
REF
ppm of V
REF
Offset Error
2.5
5
μ
V
Offset Error Drift
20
nV/
°
C
Positive Full-Scale Error
10
10
0.2
50
50
ppm of V
REF
ppm of V
REF
ppm of V
REF
/
°
C
Positive Full-Scale Error Drift
Negative Full-Scale Error
10
10
0.2
50
50
ppm of V
REF
ppm of V
REF
ppm of V
REF
/
°
C
Negative Full-Scale Error Drift
Total Unadjusted Error
15
15
15
120
ppm of V
REF
ppm of V
REF
ppm of V
REF
Input Common Mode Rejection DC
dB
The
denotes specifications which apply over the full operating
SYMBOL
IN
+
IN
V
IN
PARAMETER
Absolute/Common Mode IN
+
Voltage
Absolute/Common Mode IN
Voltage
Input Differential Voltage Range
(IN
+
– IN
)
Absolute/Common Mode REF
+
Voltage
Absolute/Common Mode REF
Voltage
Reference Differential Voltage Range
(REF
+
– REF
)
IN
+
Sampling Capacitance
IN
Sampling Capacitance
REF
+
Sampling Capacitance
REF
Sampling Capacitance
Leakage Current, Inputs and Reference
CONDITIONS
MIN
TYP
MAX
UNITS
GND – 0.3V
GND – 0.3V
–V
REF
/2
V
CC
+ 0.3V
V
CC
+ 0.3V
V
REF
/2
V
V
V
REF
+
REF
V
REF
0.1
GND
0.1
V
CC
V
V
V
V
CC
– 0.1V
V
CC
C
S(IN+)
C
S(IN–)
C
S(REF+)
C
S(REF–)
I
DC_LEAK(IN+, IN–,
REF+, REF–)
I
SAMPLE(IN+, IN–,
REF+, REF–)
t
OPEN
QIRR
2
2
2
2
1
pF
pF
pF
pF
nA
CS = V
CC
, IN
+
= GND, IN
= GND,
REF
+
= 5V, REF
= GND
–15
15
Average Input/Reference Current
During Sampling
MUX Break-Before-Make
MUX Off Isolation
Varies, See Applications Section
nA
50
120
ns
dB
V
IN
= 2V
P-P
DC to 1.8MHz
The
denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25
°
C. (Note 3)
A ALOG I PUT A
D REFERE CE
U
U
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