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LTC2445 Datenblatt(PDF) 3 Page - Linear Technology

Teilenummer LTC2445
Bauteilbeschribung  24-Bit High Speed 8-/16-Channel ADCs with Selectable Speed/Resolution
PDF  28 Pages
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Hersteller  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC2445 Datenblatt(HTML) 3 Page - Linear Technology

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LTC2444/LTC2445/
LTC2448/LTC2449
3
sn2444589 2444589fs
ELECTRICAL CHARACTERISTICS
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Resolution (No Missing Codes)
0.1V ≤ VREF ≤ VCC, –0.5 • VREF ≤ VIN ≤ 0.5 • VREF, (Note 5)
●
24
Bits
Integral Nonlinearity
VCC = 5V, REF+ = 5V, REF– = GND, VINCM = 2.5V, (Note 6)
●
5
15
ppm of VREF
REF+ = 2.5V, REF– = GND, VINCM = 1.25V, (Note 6)
3
ppm of VREF
Offset Error
2.5V ≤ REF+ ≤ VCC, REF– = GND,
●
2.5
5
µV
GND ≤ IN+ = IN– ≤ VCC (Note 12)
Offset Error Drift
2.5V ≤ REF+ ≤ VCC, REF
– = GND,
20
nV/°C
GND ≤ IN+ = IN– ≤ VCC
Positive Full-Scale Error
REF+ = 5V, REF– = GND, IN+ = 3.75V, IN– = 1.25V
●
10
50
ppm of VREF
REF+ = 2.5V, REF– = GND, IN+ = 1.875V, IN– = 0.625V
●
10
50
ppm of VREF
Positive Full-Scale Error Drift
2.5V ≤ REF+ ≤ VCC, REF– = GND,
0.2
ppm of VREF/°C
IN+ = 0.75REF+, IN– = 0.25 • REF+
Negative Full-Scale Error
REF+ = 5V, REF– = GND, IN+ = 1.25V, IN– = 3.75V
●
10
50
ppm of VREF
REF+ = 2.5V, REF– = GND, IN+ = 0.625V, IN– = 1.875V
●
10
50
ppm of VREF
Negative Full-Scale Error Drift
2.5V ≤ REF+ ≤ VCC, REF
– = GND,
0.2
ppm of VREF/°C
IN+ = 0.25 • REF+, IN– = 0.75 • REF+
Total Unadjusted Error
5V ≤ VCC ≤ 5.5V, REF+ = 2.5V, REF– = GND, VINCM = 1.25V
15
ppm of VREF
5V ≤ VCC ≤ 5.5V, REF+ = 5V, REF– = GND, VINCM = 2.5V
15
ppm of VREF
REF+ = 2.5V, REF– = GND, VINCM = 1.25V, (Note 6)
15
ppm of VREF
Input Common Mode Rejection DC
2.5V ≤ REF+ ≤ VCC, REF– = GND,
120
dB
GND ≤ IN– = IN+ ≤ VCC
The
● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Notes 3, 4)
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
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 – 0.1V
V
VREF
Reference Differential Voltage Range
●
0.1
VCC
V
(REF+ – REF–)
CS(IN+)
IN+ Sampling Capacitance
2
pF
CS(IN–)
IN– Sampling Capacitance
2
pF
CS(REF+)
REF+ Sampling Capacitance
2
pF
CS(REF–)
REF– Sampling Capacitance
2
pF
IDC_LEAK(IN+, IN–,
Leakage Current, Inputs and Reference
CS = VCC, IN
+ = GND, IN– = GND,
●
–15
1
15
nA
REF+, REF–)
REF+ = 5V, REF– = GND
ISAMPLE(IN+, IN–,
Average Input/Reference Current
Varies, See Applications Section
nA
REF+, REF–)
During Sampling
tOPEN
MUX Break-Before-Make
50
ns
QIRR
MUX Off Isolation
VIN = 2VP-P DC to 1.8MHz
120
dB
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



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