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TLV7041 Datasheet(PDF) 24 Page - Texas Instruments

Part # TLV7041
Description  TLV703x and TLV704x Small-Size, Nanopower, Low-Voltage Comparators
PDF  69 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

TLV7041 Datasheet(HTML) 24 Page - Texas Instruments

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7.2.2.2 Detailed Design Procedure
The IR receiver AFE design is highly streamlined and optimized. R1 converts the IR light energy induced current
into voltage and applies to the inverting input of the comparator. The RC network of R2 and C1 establishes
a reference voltage Vref, which tracks the mean amplitude of the IR signal. The noninverting input is directly
connected to Vref through R3. R3 and R4 are used to produce a hysteresis to keep transitions free of spurious
toggles. To reduce the current drain from the coin cell battery, data transmission must be short and infrequent.
More technical details are provided in the TI TechNote Low Power Comparator for Signal Processing and
Wake-Up Circuit in Smart Meters (SNVA808).
7.2.2.3 Application Curve
V
OUT
V
IN
V
REF
1.8 V
1.2 V
4.0 V
0.0 V
1.61 V
1.58 V
Time
0.0
200.0 u
400.0 u
600.0 u
800.0 u
Figure 7-6. IR Receiver AFE Waveforms
TLV7031, TLV7032, TLV7041, TLV7042, TLV7034, TLV7044
SLVSE13J – SEPTEMBER 2017 – REVISED NOVEMBER 2024
www.ti.com
24
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Copyright © 2024 Texas Instruments Incorporated
Product Folder Links: TLV7031 TLV7032 TLV7041 TLV7042 TLV7034 TLV7044



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