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TLV3604 データシート(PDF) 11 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) 11 Page - Texas Instruments

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 11 / 17 page
background image
+
±
VCCI
VEE
TLV3605
LE/HYS
R
OUTP
IN+
IN-
OUTN
VCCO
Figure 8-4. Adjusting Hysteresis with an External Resistor (R)
8.2 Typical Application
8.2.1 Optical Receiver
The TLV360x can be used in conjunction with a high performance amplifier such as the OPA855 to create an
optical receiver as shown in the Figure 8-5. The photodiode is connected to a bias voltage and is being driven
with a pulsed laser. The OPA855 takes the current conducting through the diode and translates it into a voltage
for a high speed comparator to detect. The TLV360x will then output the proper LVDS signal according to the
threshold set (VREF2).
+
-
-
+
VCCI/VCCO
VREF2
OUT+
OUT-
TLV360x
OPA855
100O
RF
CF
VBIAS
VREF1
Figure 8-5. Optical Receiver
8.2.2 Logic Clock Source to LVDS Transceiver
The Figure 8-6 shows a logic clock source being terminated and driven with the TLV360x across a CAT6 Cable
to receive an equivalent LVDS clock signal at the receiver end.
-
+
V
REF
-
+
RJ45
RJ45
CAT6 CABLE
49.9O
49.9O
CLOCK SOURCE
TLV360x
TLV360x
OUT+
OUT-
Figure 8-6. LVDS Clock Transceiver
8.2.3 External Trigger Function for Oscilloscopes
Figure 8-7 is a typical configuration for creating an external trigger on oscilliscopes. The user adjusts the trigger
level, and a DAC converts this trigger level to a voltage the TLV360x can use as a reference. The input voltage
from an oscilloscope channel is then compared to the trigger reference voltage, and the TLV360x sends an
LVDS signal to a downstream FPGA to begin a capture.
www.ti.com
TLV3604
SNOSDA2A – AUGUST 2020 – REVISED AUGUST 2020
Copyright © 2020 Texas Instruments Incorporated
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