1719 데이터 시트보기 (PDF) - Linear Technology
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1719 Datasheet PDF : 16 Pages
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LT1719
ELECTRICAL CHARACTERISTICS The q denotes specifications that apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. VCC = 5V, VEE = –5V, +VS = 5V, VCM = 1V, COUT = 10pF, VSHDN = 0.5V,
VOVERDRIVE = 20mV, unless otherwise specified.
SYMBOL
tJITTER
fMAX
tOFF
tON
ICC
IEE
IS
ICCS
ISS
IEES
ICCSO
ISSO
IEEO
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
CONDITIONS
MIN TYP MAX
VIN = 1.2VP-P (6dBm), ZIN = 50Ω tPD+
15
f = 20MHz
tPD–
11
VOVERDRIVE = 50mV, +VS = 3V
70
VOVERDRIVE = 50mV, +VS = 5V
62.5
Time to ZOUT ≥10kΩ
75
Time to VOH or VOL, ILOAD = 1mA
350
+ VS = VCC = 5V, VEE = – 5V
q
1.0
2.2
+ VS = VCC = 3V, VEE = 0V
q
0.9
1.8
+ VS = VCC = 5V, VEE = – 5V
q – 4.8 – 2.6
+ VS = VCC = 3V, VEE = 0V
q – 3.8 – 2.2
+ VS = VCC = 5V, VEE = – 5V
q
4.2
8
VS = VCC = 3V, VEE = 0V
q
3.3
6
+ VS = 6V, VCC = 5V, VEE = – 5V
VSHDN = 5.5V
q
0.2
30
q
7
50
q – 30 – 0.2
+ VS = 6V, VCC = 5V, VEE = – 5V
Shutdown Pin Open
q
0.1
20
q
0.1
20
q – 20
0.1
UNITS
psRMS
psRMS
MHz
MHz
ns
ns
mA
mA
mA
mA
mA
mA
µA
µA
µA
µA
µA
µA
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 VTRIP+ and
VTRIP–, while the hysteresis voltage is the difference of these two.
Note 4: The common mode rejection ratio is measured with VCC = 5V,
VEE = – 5V and is defined as the change in offset voltage measured from
VCM = – 5.1V to VCM = 3.8V, divided by 8.9V.
Note 5: The power supply rejection ratio is measured with VCM = 1V
and is defined as the worst of: the change in offset voltage from
VEE = – 5V to VEE = 0V divided by 5V, or the change in offset voltage
from VCC = + VS = 2.7V to VCC = + VS = 6V (with VEE = 0V) divided by
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 VOH and VOL with only 10mV of overdrive.
Note 7: Propagation delay measurements made with 100mV steps.
Overdrive is measured relative to VTRIP±.
Note 8: tPD cannot be measured in automatic handling equipment with
low values of overdrive. The LT1719 is 100% tested with a 100mV
step and 20mV overdrive. Correlation tests have shown that tPD limits
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:
tSKEW = |tPDLH – tPDHL|
PIN FUNCTIONS
VCC (Pin 1): Positive Supply Voltage for Input Stage.
+ IN (Pin 2): Noninverting Input of Comparator.
– IN (Pin 3): Inverting Input of Comparator.
VEE (Pin 4): Negative Supply Voltage for Input Stage and
Chip Substrate.
GND (Pin 5): Ground.
SHDN (Pin 6): Shutdown. Pull to ground to enable
comparator.
OUT (Pin 7): Output of Comparator.
+ VS (Pin 8): Positive Supply Voltage for Output Stage.
3
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