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TLV3604 データシート(PDF) 8 Page - Texas Instruments

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部品番号. TLV3604
部品情報  TLV3604, TLV3605 800-ps High-Speed RRI Comparator with LVDS Outputs
ダウンロード  17 Pages
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メーカー  TI [Texas Instruments]
ホームページ  http://www.ti.com
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TLV3604 Datasheet(HTML) 8 Page - Texas Instruments

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7 Detailed Description
7.1 Overview
The TLV3604 and TLV3605 are 800 ps propagation delay and 3.0 Gbps (1.5 GHz) comparators with LVDS
output. The TLV3604 is ideally suited for time-of-light application, while TLV3605 is ideal for signal rectification
and restoration with enhanced features. The TLV3604 is in the 6-pin SC-70 and TLV3605 is in 12-pin QFN
package.
7.2 Functional Block Diagram
LVDS
VCCI
VEE
+
±
TLV3605
VCCO
SHDN
LVDS
VCCI/VCCO
V
EE
+
±
TLV3604
LE/HYS
7.3 Feature Description
The TLV3604 and TLV3605 are single channel, high speed with a typical propagation delay of 800 ps, LVDS
output comparators. The minimum pulse width detection capability is 800 ps and the typical toggle rate is 3.0
Gbps. These comparators are ideal for time-of-flight as well as signal rectification type of applications. The rail-
to-rail input stage capable of operating up to 200 mV beyond each power supply rail combined with a maximum
5 mV input offset without hysteresis gives 61 dB input dynamic range over the entire temperature range. The
TLV3605 also provides shutdown enable and adjustable hysteresis controls. An external resistor can be used to
configure the input hysteresis, making it immune to noisy environment.
7.4 Device Functional Modes
The TLV3604 has a single functional mode and is operational when the power supply voltage is greater than
2.3V. The TLV3605 has active mode and shutdown mode when power supply voltage is greater than 2.3 V. The
TLV3605 is in shutdown mode when the SHDN pin is less than 0.4 V and is in active mode when SHDN pin is
greater than 1.5 V. The SHDN is 1.8 V logic compliant and independent of power supply.
7.4.1 Rail-to-Rail Inputs
The TLV3604 and TLV3605 feature an input stage capable of operating 0 –200 mV below negative power supply
(ground) and 200 mV beyond the positive supply voltage, allowing for zero cross detection and maximizing input
dynamic range given a certain power supply. 5 mV maximum input offset without internal hysteresis in TLV3604
allows high sensitivity signal detection.
7.4.2 LVDS Output
The TLV3604 and TLV3605 output are LVDS compliant. When the input of the downstream device is terminated
with a 100 Ω resistor, it provides a ±350 mV LVDS swing. Fully differential outputs enable fast digital toggling and
reduce EMI compared to single-ended output standard.
TLV3604
SNOSDA2A – AUGUST 2020 – REVISED AUGUST 2020
www.ti.com
8
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