LT1719 Linear Technology, LT1719 Datasheet - Page 3

• Manufacturer Part Number: LT1719
• Description: 4ns/ 150MHz Dual Comparator with Independent Input/Output Supplies
• Manufacturer: Linear Technology

Note 1: Absolute Maximum Ratings are those values beyond which the
life of a device may be impaired.
Note 2: If one input is within these common mode limits, the other
input can go outside the common mode limits and the output will be
valid.
Note 3: The LT1719 comparator includes internal hysteresis. The trip
points are the input voltage needed to change the output state in each
direction. The offset voltage is defined as the average of V
V
Note 4: The common mode rejection ratio is measured with V
V
V
Note 5: The power supply rejection ratio is measured with V
and is defined as the worst of: the change in offset voltage from
V
range, otherwise specifications are at T
V
SYMBOL
t
f
t
t
I
I
I
I
I
I
I
I
I
ELECTRICAL CHARACTERISTICS
PIN
V
+ IN (Pin 2): Noninverting Input of Comparator.
– IN (Pin 3): Inverting Input of Comparator.
V
Chip Substrate.
JITTER
MAX
OFF
ON
CC
EE
S
CCS
SS
EES
CCSO
SSO
EEO
TRIP
EE
CM
EE
OVERDRIVE
CC
EE
= – 5V and is defined as the change in offset voltage measured from
= – 5V to V
U
= – 5.1V to V
–
(Pin 4): Negative Supply Voltage for Input Stage and
(Pin 1): Positive Supply Voltage for Input Stage.
, while the hysteresis voltage is the difference of these two.
FUNCTIONS
= 20mV, unless otherwise specified.
U
EE
PARAMETER
Output Timing Jitter
Maximum Toggle Frequency
Turn-Off Delay
Wake-Up Delay
Positive Input Stage Supply Current
Negative Input Stage Supply Current
Positive Output Stage Supply Current
Disabled Supply Currents
CM
= 0V divided by 5V, or the change in offset voltage
= 3.8V, divided by 8.9V.
U
A
= 25 C. V
CC
TRIP
= 5V, V
CM
CONDITIONS
V
f = 20MHz
V
V
Time to Z
Time to V
+ V
+ V
+ V
+ V
+ V
V
+ V
V
+ V
Shutdown Pin Open
+
CC
IN
OVERDRIVE
OVERDRIVE
S
SHDN
and
= 1V
S
S
S
S
S
S
S
= V
The
= 5V,
= 1.2V
= V
= V
= V
= V
= V
= 6V, V
= 6V, V
EE
CC
= 5.5V
CC
CC
CC
CC
CC
= –5V, +V
OUT
= 3V, V
OH
P-P
denotes specifications that apply over the full operating temperature
= 5V, V
= 3V, V
= 5V, V
= 3V, V
= 5V, V
= 50mV, +V
= 50mV, +V
CC
CC
or V
(6dBm), Z
= 5V, V
= 5V, V
10k
from V
3.3V.
Note 6: Because of internal hysteresis, there is no small-signal region
in which to measure gain. Proper operation of internal circuity is
ensured by measuring V
Note 7: Propagation delay measurements made with 100mV steps.
Overdrive is measured relative to V
Note 8: t
low values of overdrive. The LT1719 is 100% tested with a 100mV
step and 20mV overdrive. Correlation tests have shown that t
can be guaranteed with this test, if additional DC tests are performed
to guarantee that all internal bias conditions are correct.
Note 9: Propagation Delay Skew is defined as:
GND (Pin 5): Ground.
SHDN (Pin 6): Shutdown. Pull to ground to enable
comparator.
OUT (Pin 7): Output of Comparator.
+ V
EE
OL
EE
EE
EE
EE
EE
, I
= 0V
t
S
SKEW
S
= – 5V
= 0V
= – 5V
= 0V
= – 5V
LOAD
= 5V, V
EE
EE
(Pin 8): Positive Supply Voltage for Output Stage.
CC
S
S
IN
= – 5V
= – 5V
PD
= 3V
= 5V
= + V
= |t
= 1mA
= 50
cannot be measured in automatic handling equipment with
PDLH
CM
S
= 2.7V to V
= 1V, C
– t
t
t
PDHL
PD
PD
+
–
OH
OUT
|
and V
CC
= 10pF, V
= + V
OL
– 4.8
– 3.8
MIN
– 30
– 20
TRIP
S
with only 10mV of overdrive.
= 6V (with V
SHDN
.
– 2.6
– 2.2
– 0.2
62.5
TYP
350
1.0
0.9
4.2
3.3
0.2
0.1
0.1
0.1
15
11
70
75
7
= 0.5V,
EE
= 0V) divided by
MAX
2.2
1.8
30
50
20
20
8
6
LT1719
PD
limits
UNITS
ps
ps
3
MHz
MHz
RMS
RMS
mA
mA
mA
mA
mA
mA
ns
ns
A
A
A
A
A
A