lt1715cms-trpbf Linear Technology Corporation, lt1715cms-trpbf Datasheet

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lt1715cms-trpbf

Manufacturer Part Number
lt1715cms-trpbf
Description
4ns, 150mhz Dual Comparator With Independent Input/output Supplies
Manufacturer
Linear Technology Corporation
Datasheet
FEATURES
TYPICAL APPLICATIO
APPLICATIO S
UltraFast: 4ns at 20mV Overdrive
150MHz Toggle Frequency
Separate Input and Output Power Supplies
Low Power: 4.6mA per Comparator at 3V
Pinout Optimized for High Speed Use
Output Optimized for 3V and 5V Supplies
TTL/CMOS Compatible Rail-to-Rail Output
Input Voltage Range Extends 100mV
Below Negative Rail
Internal Hysteresis with Specified Limits
High Speed Differential Line Receivers
Level Translators
Window Comparators
Crystal Oscillator Circuits
Threshold Detectors/Discriminators
High Speed Sampling Circuits
Delay Lines
100MHz Dual Differential Line Receiver
IN A
IN B
–5V
5V
U
+
+
1715 TA01
U
3V
Independent Input/Output Supplies
OUT A
OUT B
DESCRIPTIO
The LT
for low voltage operation. Separate supplies allow inde-
pendent analog input ranges and output logic levels with
no loss of performance. The input voltage range extends
from 100mV below V
esis makes the LT1715 easy to use even with slow moving
input signals. The rail-to-rail outputs directly interface to
TTL and CMOS. The symmetric output drive results in
similar rise and fall times that can be harnessed for analog
applications or for easy translation to other single supply
logic levels.
The LT1715 is available in the 10-pin MSOP package. The
pinout of the LT1715 minimizes parasitic effects by plac-
ing the most sensitive inputs away from the outputs,
shielded by the power rails.
For a dual/quad single supply comparator with similar
propagation delay, see the LT1720/LT1721. For a single
comparator with similar propagation delay, see the LT1719.
UltraFast is a trademark of Linear Technology Corporation.
, LTC and LT are registered trademarks of Linear Technology Corporation.
CLOCK OUT
DATA OUT
®
1715 is an UltraFast
Dual Comparator with
3V
0V
3V
0V
Line Receiver Response to 100MHz Clock,
FET PROBES
50MHz Data Both with 25mV
U
EE
to 1.2V below V
5ns/DIV
TM
dual comparator optimized
4ns, 150MHz
P-P
CC
Inputs
. Internal hyster-
1715 TA02
LT1715
1V/DIV
1V/DIV
1

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lt1715cms-trpbf Summary of contents

Page 1

... For a dual/quad single supply comparator with similar propagation delay, see the LT1720/LT1721. For a single comparator with similar propagation delay, see the LT1719. , LTC and LT are registered trademarks of Linear Technology Corporation. UltraFast is a trademark of Linear Technology Corporation. Line Receiver Response to 100MHz Clock, ...

Page 2

... 20mV 3V, V OVERDRIVE 5mV (Notes 10, 11) OVERDRIVE EE + – (Note 12) Between ORDER PART NUMBER TOP VIEW LT1715CMS LT1715IMS OUT A 7 OUT GND MS10 PACKAGE MS10 PART MARKING = 120 C/ W (NOTE 3) LTVQ JA LTVV = 1V, C ...

Page 3

ELECTRICAL CHARACTERISTICS range, otherwise specifications are at T unless otherwise specified. SYMBOL PARAMETER t Differential Propagation Delay PD t Output Rise Time r t Output Fall Time f t Output Timing Jitter JITTER I Positive Input Stage Supply Current CC ...

Page 4

LT1715 W U TYPICAL PERFOR A CE CHARACTERISTICS Input Offset and Trip Voltages vs Supply Voltage TRIP –1 – V TRIP – ...

Page 5

W U TYPICAL PERFOR A CE CHARACTERISTICS Propagation Delay vs Overdrive 100mV STEP C = 10pF LOAD ...

Page 6

LT1715 CTIO S +IN A (Pin 1): Noninverting Input of Comparator A. – (Pin 2): Inverting Input of Comparator A. – (Pin 3): Inverting Input of Comparator B. +IN B (Pin ...

Page 7

TEST CIRCUITS PULSE 0V IN – APPLICATIO S I FOR ATIO Power Supply Configurations The LT1715 has separate supply pins for the input and output stages that allow flexible operation, accommodat- ing separate voltage ranges for the ...

Page 8

LT1715 U U APPLICATIO S I FOR ATIO responds correctly to a small differential input signal. If one input is within the common mode limit, the other input signal can go outside the common mode limits the absolute ...

Page 9

U U APPLICATIONS INFORMATION The ground pin of the LT1715 can disturb the ground plane potential while toggling due to the extremely fast on and off times of the output stage. Therefore, using a ground for input termination or filtering ...

Page 10

LT1715 U U APPLICATIO S I FOR ATIO At frequencies well beyond 100MHz, the toggling of one channel may be impaired by toggling on the other. This is a rather complex interaction of supply bypassing and bond inductance, and it ...

Page 11

U U APPLICATIONS INFORMATION V REF 1/2 LT1715 R1 – INPUT Figure 6. Additional External Hysteresis With this in mind, calculation of the resistor values needed is a two-step process. First, calculate the value of R3 based ...

Page 12

LT1715 U U APPLICATIONS INFORMATION 5V 180 LSTTL 270 820 (a) STANDARD TTL TO PECL TRANSLATOR 1/2 LT1715 V EE (b) LT1715 OUTPUT TO PECL TRANSLATOR 1/2 LT1715 (c) 3V LT1715 ...

Page 13

U U APPLICATIO S I FOR ATIO The level translator designs assume one gate load. Mul- tiple gates can have significant I loading, and the trans- IH mission line routing and termination issues also make this case difficult. ECL, and ...

Page 14

LT1715 U U APPLICATIO S I FOR ATIO the frequency-dependent increase in power consumption. The frequency dependence of the supply current is shown in the Typical Performance Characteristics. Speed Limits The LT1715 comparator is intended for high speed appli- cations, ...

Page 15

... INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 16

... Single Comparator Similar to the LT1715 Dual/Quad Comparator Similar to the LT1715 sine wave at P-P at 10MHz, the LT1715 delay starts to de – 10MHz 632mV 2V 6.32V P-P P-P P INPUT AMPLITUDE (dBm) 1715 F12b 1715f LT/TP 0401 4K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2001 ...

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