LT1719IS6#TRPBF Linear Technology, LT1719IS6#TRPBF Datasheet
LT1719IS6#TRPBF
Specifications of LT1719IS6#TRPBF
Available stocks
Related parts for LT1719IS6#TRPBF
LT1719IS6#TRPBF Summary of contents
Page 1
... For a dual/quad comparator with similar performance, see the LT1720/LT1721. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. UltraFast is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. ...
Page 2
... LT1719IS8#TRPBF LT1719CS6#PBF LT1719CS6#TRPBF LT1719IS6#PBF LT1719IS6#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based fi nish parts. For more information on lead free part marking, go to: For more information on tape and reel specifi cations, go to: 2 Output Current (Continuous) ........................... ± ...
Page 3
ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T LT1719S8 and V = –5V, for the LT1719S6 SYMBOL PARAMETER V – V Input Supply Voltage Output ...
Page 4
LT1719 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T LT1719S8 and V = –5V, for the LT1719S6 SYMBOL PARAMETER I Positive Output Stage Supply Current S (LT1719S8 Only) V ...
Page 5
TYPICAL PERFORMANCE CHARACTERISTICS Input Offset and Trip Voltages vs Supply Voltage TRIP –1 – V TRIP 25°C – – GND EE –3 2.5 3.0 ...
Page 6
LT1719 TYPICAL PERFORMANCE CHARACTERISTICS Output Low Voltage vs Load Current 0 –10mV IN 125°C 0.4 125° 2.7V CC 25°C 0.3 –55°C 0.2 0 OUTPUT ...
Page 7
PIN FUNCTIONS LT1719S8 V (Pin 1): Positive Supply Voltage for Input Stage (Pin 2): Noninverting Input of Comparator. –IN (Pin 3): Inverting Input of Comparator. V (Pin 4): Negative Supply Voltage for Input Stage and EE Chip ...
Page 8
LT1719 TEST CIRCUITS PULSE 0V IN –3V 50Ω BANDWIDTH-LIMITED TRIANGLE WAVE ~ 1kHz, V ±7. 0.1μF 50k + DUT 50Ω LT1719 50Ω – 200k V CM 1/2 LT1638 + 100k 100k – + 100k – 100k 1/2 ...
Page 9
APPLICATIONS INFORMATION Power Supply Confi gurations (SO-8 Package) The LT1719S8 has separate supply pins for the input and output stages that allow fl exible operation, accommodating separate voltage ranges for the analog input and the output logic. Of course, a ...
Page 10
LT1719 APPLICATIONS INFORMATION The propagation delay does not increase signifi cantly when driven with large differential voltages, but with low levels of overdrive, an apparent increase may be seen with large source resistances due delay caused by ...
Page 11
APPLICATIONS INFORMATION The outputs of the LT1719 are capable of very high slew rates. To prevent overshoot, ringing and other problems with transmission line effects, keep the output traces shorter than 10cm sure to terminate the lines to ...
Page 12
LT1719 APPLICATIONS INFORMATION The exact amount of hysteresis will vary from part to part as indicated in the specifi cations table. The hysteresis level will also vary slightly with changes in supply voltage and common mode voltage. A key advantage ...
Page 13
APPLICATIONS INFORMATION With this in mind, calculation of the resistor values needed is a two-step process. First, calculate the value of R3 based on the additional hysteresis desired, the output voltage swing and the impedance of the primary bias string: ...
Page 14
LT1719 APPLICATIONS INFORMATION Interfacing the LT1719 to ECL The LT1719 comparators can be used in high speed ap- plications where emitter-coupled logic (ECL) is deployed. To interface the output of the LT1719 to ECL logic inputs, standard TTL/CMOS to ECL ...
Page 15
APPLICATIONS INFORMATION Figure 6b shows a three resistor level translator for inter- facing the LT1719 to ECL running off the same supply rail. No pull-down on the output of the LT1719 is needed, but pull-down R3 limits the V seen ...
Page 16
LT1719 APPLICATIONS INFORMATION Circuit Description The block diagram of the LT1719 is shown in Figure 7. The circuit topology consists of a differential input stage, a gain stage with hysteresis and a complementary com- mon-emitter output stage. All of the ...
Page 17
APPLICATIONS INFORMATION three categories: input speed limits, output speed limits, and internal speed limits. There are no significant input speed limits except the shunt capacitance of the input nodes. If the 2pF typical input nodes are driven, the LT1719 will ...
Page 18
LT1719 APPLICATIONS INFORMATION ±V Test Circuit TRIP The input trip points test circuit uses a 1kHz triangle wave to repeatedly trip the comparator being tested. The LT1719 output is used to trigger switched capacitor sampling of the triangle wave, with ...
Page 19
SIMPLIFIED SCHEMATIC LT1719 1719fa 19 ...
Page 20
LT1719 PACKAGE DESCRIPTION .050 BSC .245 MIN .030 ±.005 TYP RECOMMENDED SOLDER PAD LAYOUT .010 – .020 (0.254 – 0.508) .008 – .010 (0.203 – 0.254) NOTE: 1. DIMENSIONS IN 2. DRAWING NOT TO SCALE 3. THESE DIMENSIONS DO NOT ...
Page 21
... MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193 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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. S6 Package ...
Page 22
... Dual/Quad Comparator Similar to the LT1719 www.linear.com ● sine wave at P-P at 10MHz, the LT1719 delay starts to decrease 25° – 10MHz 632mV 2V 6.32V P-P P-P P-P – INPUT AMPLITUDE (dBm) 1719 F09b LT 0809 REV A • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2000 1719fa ...