NCS2250, NCV2250, NCS2252, NCV2252
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5
Table 7. ELECTRICAL CHARACTERISTICS AT 1.8 V SUPPLY
Typical values are referenced to T
A
= 25°C, V
DD
= 1.8 V, V
SS
= 0 V, V
CM
= mid−supply, C
L
= 50 pF, unless otherwise noted. NCS2252 is
connected to R
PULL−UP
= 10 kΩ to V
DD
, unless otherwise noted. Boldface numbers apply from T
A
= −40°C to 125°C (Notes 13, 14)
Parameter
Test Conditions Symbol Min Typ Max Units
SUPPLY CHARACTERISTICS
Quiescent Supply Current
No load I
DD
145 200
μA
250
Power Supply Rejection Ratio PSRR
82
dB
62.5
INPUT CHARACTERISTICS
Input Offset Voltage
V
OS
0.5 6
mV
6
Input Bias Current (Note 14) I
IB
20
pA
1000
Input Offset Current (Note 14) I
OS
20
pA
1000
Common Mode Rejection Ratio CMRR
76
dB
55
Input Capacitance C
IN
4.4 pF
OUTPUT CHARACTERISTICS
Output Voltage High
NCS2250, I
OUT
= 4 mA V
OH
V
DD
– 0.14
V
V
DD
– 0.3
Output Voltage Low I
OUT
= 4 mA V
OL
V
SS
+ 0.12
V
V
SS
+ 0.3
Output Current Capability
NCS2250, Sourcing
I
O
25
mA
Sinking 42
Output Leakage Current NCS2252, V
S
= 5.5 V I
LEAK
1 nA
Output Rise Time NCS2250, 10% to 90%, V
OD
= 100 mV t
rise
7 ns
Output Fall Time
NCS2250, 90% to 10%, V
OD
= 100 mV
t
fall
6
ns
NCS2252, 90% to 10%, V
OD
= 100 mV 7
Propagation Delay (Note 14) NCS2250
V
OD
= 100 mV
t
pLH
, t
pHL
56 68
ns
V
OD
= 50 mV 71
V
OD
= 20 mV 106
NCS2252
(Note 15)
V
OD
= 100 mV
t
pHL
56 68
ns
V
OD
= 50 mV 71
V
OD
= 20 mV 106
Propagation Delay Skew
(NCS2250)
V
OD
= 100 mV, C
L
= 50 pF
t
SKEW
5
ns
V
OD
= 50 mV, C
L
= 50 pF 2
V
OD
= 20 mV, C
L
= 50 pF 1
13.Refer to ABSOLUTE MAXIMUM RATINGS and APPLICATION INFORMATION for Safe Operating Area.
14.Performance guaranteed over the indicated operating temperature range by design and/or characterization.
15.Typical values are provided for NCS2252 output high−to−low propagation delay. NCS2252 is an open drain comparator.
Output low−to−high propagation delay is a function of the RC time constant, which is dependent on the pull−up resistor.
