công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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ADS1209 bảng dữ liệu(PDF) 6 Page - Texas Instruments |
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ADS1209 bảng dữ liệu(HTML) 6 Page - Texas Instruments |
6 / 23 page AVDD AGND REFINA NC CHA+ CHA - CHB - CHB+ NC REFINB AGND AVDD AVDD REFOUT AGND OUTA OUTB CLKOUT BGND BVDD CLKIN CLKSEL AGND AVDD 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 ADS1209 14 13 ADS1209 SBAS491 – FEBRUARY 2010 www.ti.com PIN CONFIGURATION PW PACKAGE TSSOP-24 (TOP VIEW) PIN DESCRIPTIONS PIN NAME NO. I/O(1) DESCRIPTION AVDD 1 P Analog power supply; nominal 5V. Decouple to AGND with a 0.1µF ceramic capacitor. AGND 2 P Analog ground. Connect to analog ground plane. REFINA 3 AI Reference voltage input for channel A NC 4 NC This pin is not internally connected CHA+ 5 AI Fully differential noninverting analog input channel A CHA– 6 AI Fully differential inverting analog input channel A CHB– 7 AI Fully differential inverting analog input channel B CHB+ 8 AI Fully differential noninverting analog input channel B NC 9 NC This pin is not internally connected REFINB 10 AI Reference voltage input for channel B AGND 11 P Analog ground. Connect to analog ground plane. AVDD 12 P Analog power supply; nominal 5V. Decouple to AGND with a 0.1µF ceramic capacitor. AVDD 13 P Analog power supply; nominal 5V. Decouple to AGND with a 0.1µF ceramic capacitor. AGND 14 P Analog ground. Connect to analog ground plane. Clock select input. When this pin is low, an external clock source at CLKIN is used. When high, the CLKSEL 15 DI internal RC oscillator is used as clock source. CLKIN 16 DI External clock input. Must be tied to BVDD or BGND, if not used. BVDD 17 P I/O buffer power supply, nominal: 3V. Decouple to BGND with a 0.1µF ceramic capacitor BGND 18 P I/O buffer ground. Connect to digital ground plane CLKOUT 19 DO Bit stream clock output OUTB 20 DO Bit stream data output of channel B modulator OUTA 21 DO Bit stream data output of channel A modulator AGND 22 P Analog ground. Connect to analog ground plane. REFOUT 23 AO Internal reference voltage output, nominal: 2.5V. Decouple to AGND with a 0.1µF ceramic capacitor. AVDD 24 P Analog power supply, nominal: 5V. Decouple to AGND with a 0.1µF ceramic capacitor. (1) AI = analog input; AO = analog output; DI = digital input; DO = digital output; P = power supply; NC = not connected. 6 Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporated Product Folder Link(s): ADS1209 |
Số phần tương tự - ADS1209_15 |
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Mô tả tương tự - ADS1209_15 |
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