Datasheet LT1713, LT1714 (Analog Devices)

LT1713/LT1714 Single/Dual, 7ns, Low Power, 3V/5V/±5V Rail-to-Rail Comparators
U FEATURES DESCRIPTIO
■
Ultrafast: 7ns at 20mV Overdrive
The LT®1713/LT1714 are UltraFastTM 7ns, single/dual
8.5ns at 5mV Overdrive
comparators featuring rail-to-rail inputs, rail-to-rail ■
Rail-to-Rail Inputs
complementary outputs and an output latch. Optimized ■
Rail-to-Rail Complementary Outputs
for 3V and 5V power supplies, they operate over a single
(TTL/CMOS Compatible)
supply voltage range from 2.4V to 12V or from ±2.4V to ■
Specified at 2.7V, 5V and
±
5V Supplies
±6V dual supplies. ■ Low Power (Per Comparator): 5mA The LT1713/LT1714 are designed for ease of use in a ■ Output Latch variety of systems. In addition to wide supply voltage ■ Inputs Can Exceed Supplies Without Phase Reversal flexibility, rail-to-rail input common mode range extends ■ LT1713: 8-Lead MSOP Package 100mV beyond both supply rails and the outputs are ■ LT1714: 16-Lead Narrow SSOP Package protected against phase reversal for inputs extending further beyond the rails. Also, the rail-to-rail inputs may be
U
taken to opposite rails with no significant increase in input
APPLICATIO S
current. The rail-to-rail matched complementary outputs ■ High Speed Automatic Test Equipment interface directly to TTL or CMOS logic and can sink 10mA ■ Current Sense for Switching Regulators to within 0.5V of GND or source 10mA to within 0.7V of V +. ■ Crystal Oscillator Circuits The LT1713/LT1714 have internal TTL/CMOS compatible ■ High Speed Sampling Circuits latches for retaining data at the outputs. Each latch holds ■ High Speed A/D Converters data as long as its latch pin is held high. Latch pin ■ Pulse Width Modulators hysteresis provides protection against slow moving or ■ Window Comparators noisy latch signals. The LT1713 is available in the 8-lead ■ Extended Range V/F Converters MSOP package. The LT1714 is available in the 16-lead ■ Fast Pulse Height/Width Discriminators narrow SSOP package. ■ Line Receivers , LTC and LT are registered trademarks of Linear Technology Corporation. ■ High Speed Triggers UltraFast is a trademark of Linear Technology Corporation.
U TYPICAL APPLICATIO A 4
×
NTSC Subcarrier Voltage-Tunable Crystal Oscillator
5V
LT1713/LT1714 Propagation Delay
47k*
vs Input Overdrive
1N4148 LT1004-2.5 3.9k* VIN 0V TO 5V 9.0 1M 1M* 1k* TA = 25°C 8.5 V+ = 5V 5V MV-209 V– = 0V 1M VARACTOR V 0.047µF 8.0 + STEP = 100mV DIODE t 1M C SELECT PD 2k 7.5 100pF (CHOOSE FOR CORRECT t – PLL LOOP RESPONSE) PD 7.0 390Ω Y1** 15pF 100pF + 6.5 LT1713 PROPAGATION DELAY (ns) 6.0 – FREQUENCY 5.5 OUTPUT 171314 TA01 2k 5.0 0 10 20 30 40 50 60 200pF * 1% FILM RESISTOR INPUT OVERDRIVE (mV) ** NORTHERN ENGINEERING LABS C-2350N-14.31818MHz 171314 TA02 1