LMH7220_0805 Datasheet, PDF (4/20 Pages) National Semiconductor (TI) – High Speed Comparator with LVDS Output

+5V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T_J = 25°C, V_CM = 300 mV, −50 mV < V_ID < +50 mV and R_L = 100Ω. Bold-
face limits apply at the temperature extremes. (Note 6)
Symbol
Parameter
Conditions
Min
Typ
Max
(Note 6) (Note 5) (Note 6)
Units
TR
Toggle Rate
Overdrive = ±50 mV; C_L = 2 pF @
750
940
50% Output Swing
Mb/s
t_{jitter_RMS} RMS-Random Jitter
Overdrive = 100 mV; C_L = 2 pF
Center Frequency = 70 MHz
Bandwidth = 10 Hz – 20 MHz
4.44
ps
t_PDLH
t_OD-disp
Propagation Delay
t_PDLH = (t_PDH + t_PDL ) / 2
(see figure 3 application note)
Input SR = Constant
V_ID start value = -100mV
Input Overdrive Dispersion
Overdrive 20 mV
Overdrive 50 mV
Overdrive 100 mV
Overdrive 1V
@Overdrive 20 - 100 mV
@Overdrive 100 mV - 1V
3.63
3.09
2.9
7
ns
2.41
0.79
ns
0.43
t_SR-disp Input Slew Rate Dispersion
0.05 V/ns to 1 V/ns
Overdrive 100 mV
0.20
ns
t_CM-disp
Δt_PDLH
Δt_PDHL
t_r
Input Common Mode Dispersion SR = 4 V/ns; Overdrive 100 mV
V_CM = 0 to 3V
Q to Q Time Skew
| t_PDH - t_PDL | (Note 8)
Overdrive = 100 mV; C_L = 2 pF
Q to Q Time Skew
| t_PDL - t_PDH | (Note 8)
Overdrive = 100 mV; C_L = 2 pF
Output Rise Time (20% - 80%) (Note Overdrive = 100 mV; C_L = 2 pF
9)
0.21
ns
0.09
ns
0.07
ns
0.59
ns
t_f
Output Fall Time (20% - 80%) (Note Overdrive = 100 mV; C_L = 2 pF
9)
0.55
ns
+2.7V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T_J = 25°C, V_CM = 300 mV, −50 mV < V_ID < +50 mV and R_L = 100Ω. Bold-
face limits apply at the temperature extremes. (Note 6)
Symbol
Parameter
Conditions
Min
Typ
Max
(Note 6) (Note 5) (Note 6)
Units
I_B
Input Bias Current
V_IN Differential = 0
−5
−1.3
−0.5
µA
−7
I_OS
TC I_OS
V_OS
TC V_OS
VRI
CMRR
PSRR
Input Offset Current
Input Offset Current TC
Input Offset Voltage
Input Offset Voltage TC
Input Voltage Range
Common-Mode Rejection Ratio
Power Supply Rejection Ratio
V_IN Differential = 0
V_IN Differential = 0
CMRR > 50 dB
V_CM = 0 to V_CC−2.2V
−500
−9.5
−0.2
56
63
±2
± 50
70
74
+500
+9.5
V_CC−2
nA
nA/°C
mV
μV/°C
V
dB
dB
A_V
Open Loop Gain
V_O
Output Offset Voltage
V_IN Differential = 50 mV
ΔV_O
V_O Change Between ‘0’ and ‘1’
V_IN Differential = ± 50 mV
V_OH
Output Voltage High
Average of ‘0’ to ‘1’
V_IN Differential = 50 mV
59
dB
1125
1213
1325
mV
−25
+25
mV
1370
1475
mV
V_OL
Output Voltage Low
V_IN Differential = 50 mV
925
1060
mV
Average of ‘0’ to ‘1’
V_OD
Output Voltage Differential
V_IN Differential = 50 mV
250
315
400
mV
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