LT1016_15 Datasheet, PDF (1/20 Pages) Linear Technology – UltraFast Precision 10ns Comparator

LT1016
UltraFast Precision
10ns Comparator
Features
n _{UltraFast™ (10ns typ)}
n _{Operates Off Single 5V Supply or ±5V}
n _{Complementary Output to TTL}
n _{Low Offset Voltage}
n _{No Minimum Input Slew Rate Requirement}
n _{No Power Supply Current Spiking}
n _{Output Latch Capability}
Applications
n _{High Speed A/D Converters}
■ _{High Speed Sampling Circuits}
■ _{Line Receivers}
■ _{Extended Range V-to-F Converters}
■ _{Fast Pulse Height/Width Discriminators}
■ _{Zero-Crossing Detectors}
■ _{Current Sense for Switching Regulators}
■ _{High Speed Triggers}
■ _{Crystal Oscillators}
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
UltraFast is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners.
Description
The LT^®1016 is an UltraFast 10ns comparator that interfaces
directly to TTL/CMOS logic while operating off either ±5V
or single 5V supplies. Tight offset voltage specifications
and high gain allow the LT1016 to be used in precision
applications. Matched complementary outputs further
extend the versatility of this comparator.
A unique output stage provides active drive in both direc-
tions for maximum speed into TTL/CMOS logic or passive
loads, yet does not exhibit the large current spikes found
in conventional output stages. This allows the LT1016 to
remain stable with the outputs in the active region which,
greatly reduces the problem of output “glitching” when
the input signal is slow moving or is low level.
The LT1016 has a LATCH pin which will retain input data
at the outputs, when held high. Quiescent negative power
supply current is only 3mA. This allows the negative supply
pin to be driven from virtually any supply voltage with a
simple resistive divider. Device performance is not affected
by variations in negative supply voltage.
Linear Technology offers a wide range of comparators
in addition to the LT1016 that address different applica-
tions. See the Related Parts section on the back page of
the data sheet.
Typical Application
10MHz to 25MHz Crystal Oscillator
22Ω
820pF
5V
2k
10MHz TO 25MHz
(AT CUT)
5V
+
V⁺
Q
LT1016
2k
–
Q
GND
V ^{– LATCH}
200pF
2k
OUTPUT
1016 TA1a
Response Time
V_IN
100mV STEP
5mV OVERDRIVE
THRESHOLD
THRESHOLD
V_OUT
1V/DIV
0
20
0
20
TIME (ns)
1016 TA2b
1016fc
1