LTC2498 Linear Technology, LTC2498 Datasheet - Page 4
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LTC2498
Manufacturer Part Number
LTC2498
Description
24-Bit 8-/16-Channel ADC
Manufacturer
Linear Technology
Datasheet
1.LTC2498.pdf
(36 pages)
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ANALOG INPUT AND REFERENCE
POWER REQUIREMENTS
DIGITAL INPUTS AND DIGITAL OUTPUTS
LTC2498
temperature range, otherwise specifi cations are at T
full operating temperature range, otherwise specifi cations are at T
SYMBOL
V
V
V
V
I
I
C
C
V
V
V
V
I
range, otherwise specifi cations are at T
SYMBOL
V
I
SYMBOL
IN
V
FS
LSB
REF
REF
V
CS(IN
CS(IN
CS(V
I
I
I
I
t
QIRR
4
IN
IN
OZ
CC
DC_LEAK(IN
DC_LEAK(IN
DC_LEAK(REF
DC_LEAK(REF
OPEN
CC
IN
REF
IH
IL
IH
IL
IN
IN
OH
OL
OH
OL
–
+
–
REF
+
–
)
)
)
+
–
)
)
+
–
)
)
PARAMETER
Supply Voltage
Supply Current
PARAMETER
High Level Input Voltage (CS, F
Low Level Input Voltage (CS, F
High Level Input Voltage (SCK)
Low Level Input Voltage (SCK)
Digital Input Current (CS, F
Digital Input Current (SCK)
Digital Input Capacitance (CS, F
Digital Input Capacitance (SCK)
High Level Output Voltage (SDO)
Low Level Output Voltage (SDO)
High Level Output Voltage (SCK)
Low Level Output Voltage (SCK)
Hi-Z Output Leakage (SDO)
PARAMETER
Absolute/Common Mode IN
(IN
Input Differential Voltage Range (IN
Full Scale of the Differential Input (IN
Least Signifi cant Bit of the Output Code
Absolute/Common Mode REF
Absolute/Common Mode REF
Reference Voltage Range (REF
IN
IN
V
IN
IN
REF
REF
MUX Break-Before-Make
MUX Off Isolation
REF
+
–
+
–
–
Sampling Capacitance
Sampling Capacitance
DC Leakage Current
DC Leakage Current
+
–
Corresponds to the Selected Negative Input Channel)
Sampling Capacitance
DC Leakage Current
DC Leakage Current
O
–
, SDI)
A
Voltage
+
–
+
CONDITIONS
Conversion Current (Note 12)
Temperature Measurement (Note 12)
Sleep Mode (Note 12)
O
= 25°C. (Note 3)
O
Voltage
Voltage
O
, SDI)
– REF
, SDI)
, SDI)
+
+
– IN
–
– IN
)
The
–
)
–
A
)
l
= 25°C. (Note 3)
CONDITIONS
2.7V ≤ V
2.7V ≤ V
2.7V ≤ V
2.7V ≤ V
0V ≤ V
0V ≤ V
(Notes 10, 17)
I
I
I
I
denotes the specifi cations which apply over the full operating temperature
O
O
O
O
= –800μA (Notes 10, 17)
= 1.6mA (Notes 10, 17)
= –800μA
= 1.6mA
IN
IN
CC
CC
CC
CC
≤ V
≤ V
The
CONDITIONS
Sleep Mode, IN
Sleep Mode, IN
Sleep Mode, REF
Sleep Mode, REF
V
≤ 5.5V
≤ 5.5V
≤ 5.5V (Notes 10, 15)
≤ 5.5V (Notes 10, 15)
IN
CC
CC
A
= 2V
= 25°C. (Note 3)
l
(Notes 10, 15)
denotes the specifi cations which apply over the full operating
P-P
DC to 1.8MHz
+
–
The
= GND
= GND
+
–
= V
= GND
l
CC
denotes the specifi cations which apply over the
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
V
V
V
V
GND – 0.3V
CC
CC
CC
CC
MIN
–10
–10
–10
0.5V
MIN
FS/2
2.7
– 0.5
– 0.5
– 0.5
– 0.5
–100
–100
GND
MIN
–FS
–10
–10
0.1
0.1
REF
24
TYP
TYP
160
200
10
10
1
TYP
120
11
11
11
50
1
1
1
1
REF
V
MAX
MAX
CC
275
300
0.5
0.5
0.4
0.4
5.5
10
10
10
2
MAX
+
+FS
V
V
100
100
10
10
+ 0.3V
CC
– 0.1V
CC
UNITS
UNITS
UNITS
2498fc
μA
μA
μA
nA
nA
nA
nA
dB
μA
μA
μA
pF
pF
pF
pF
pF
ns
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V