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ADS54J40 bảng dữ liệu(PDF) 76 Page - Texas Instruments

tên linh kiện ADS54J40
Giải thích chi tiết về linh kiện  ADS54J20 Dual-Channel, 12-Bit, 1.0-GSPS, Analog-to-Digital Converter
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nhà sản xuất  TI2 [Texas Instruments]
Trang chủ  https://www.ti.com
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ADS54J40 bảng dữ liệu(HTML) 76 Page - Texas Instruments

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IOVDD = 1.15 V
DVDD = 1.9 V
AVDD = 1.9 V
AVDD = 3 V
76
ADS54J20
SBAS766B – MAY 2016 – REVISED JANUARY 2017
www.ti.com
Product Folder Links: ADS54J20
Submit Documentation Feedback
Copyright © 2016–2017, Texas Instruments Incorporated
10.1 Power Sequencing and Initialization
Figure 138 shows the suggested power-up sequencing for the device. Note that the 1.15-V IOVDD supply must
rise before the 1.9-V DVDD supply. If the 1.9-V DVDD supply rises before the 1.15-V IOVDD supply, then the
internal default register settings may not load properly. The other supplies (the 3-V AVDD3V and the 1.9-V
AVDD), can come up in any order during the power sequence. The power supplies can ramp up at any rate and
there is no hard requirement for the time delay between IOVDD ramp up to DVDD ramp-up (can be in orders of
microseconds but is recommend to be a few milliseconds).
Figure 138. Power Sequencing for the ADS54Jxx Family of Devices



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