
LTC2498
4
2498ff
Digital inputs anD Digital outputs The
l
denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at TA = 25°C. (Note 3)
analog input anD reFerence The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 3)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIH
High Level Input Voltage (CS, fO, SDI)
2.7V ≤ VCC ≤ 5.5V (Note 18)
l
VCC – 0.5
V
VIL
Low Level Input Voltage (CS, fO, SDI)
2.7V ≤ VCC ≤ 5.5V
l
0.5
V
VIH
High Level Input Voltage (SCK)
2.7V ≤ VCC ≤ 5.5V (Notes 10, 15)
l
VCC – 0.5
V
VIL
Low Level Input Voltage (SCK)
2.7V ≤ VCC ≤ 5.5V (Notes 10, 15)
l
0.5
V
IIN
Digital Input Current (CS, fO, SDI)
0V ≤ VIN ≤ VCC
l
–10
10
A
IIN
Digital Input Current (SCK)
0V ≤ VIN ≤ VCC (Notes 10, 15)
l
–10
10
A
CIN
Digital Input Capacitance (CS, fO, SDI)
10
pF
CIN
Digital Input Capacitance (SCK)
(Notes 10, 17)
10
pF
VOH
High Level Output Voltage (SDO)
IO = –800A (Notes 10, 17)
l
VCC – 0.5
V
VOL
Low Level Output Voltage (SDO)
IO = 1.6mA (Notes 10, 17)
l
0.4
V
VOH
High Level Output Voltage (SCK)
IO = –800A
l
VCC – 0.5
V
VOL
Low Level Output Voltage (SCK)
IO = 1.6mA
l
0.4
V
IOZ
Hi-Z Output Leakage (SDO)
l
–10
10
A
power requireMents The
l
denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. (Note 3)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCC
Supply Voltage
l
2.7
5.5
V
ICC
Supply Current
Conversion Current (Note 12)
Temperature Measurement (Note 12)
Sleep Mode (Note 12)
H-Grade
l
160
200
1
275
300
2
2.5
A
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN
Input Differential Voltage Range (IN+ – IN–)
l
–FS
+FS
V
FS
Full Scale of the Differential Input (IN+ – IN–)
l
0.5VREF
V
LSB
Least Significant Bit of the Output Code
l
FS/224
REF+
Absolute/Common Mode REF+ Voltage
l
0.1
VCC
V
REF–
Absolute/Common Mode REF– Voltage
l
GND
REF+ – 0.1V
V
VREF
Reference Voltage Range (REF+ – REF–)
l
0.1
VCC
V
CS(IN+)
IN+ Sampling Capacitance
11
pF
CS(IN–)
IN– Sampling Capacitance
11
pF
CS(VREF)
VREF Sampling Capacitance
11
pF
IDC_LEAK(IN+)
IN+ DC Leakage Current
Sleep Mode, IN+ = GND
l
–10
1
10
nA
IDC_LEAK(IN–)
IN– DC Leakage Current
Sleep Mode, IN– = GND
l
–10
1
10
nA
IDC_LEAK(REF+) REF+ DC Leakage Current
Sleep Mode, REF+ = VCC
l
–100
1
100
nA
IDC_LEAK(REF–) REF– DC Leakage Current
Sleep Mode, REF– = GND
l
–100
1
100
nA
tOPEN
MUX Break-Before-Make
50
ns
QIRR
MUX Off Isolation
VIN = 2VP-P DC to 1.8MHz
120
dB