參數(shù)資料
型號: ADS1191IPBSR
廠商: Texas Instruments
文件頁數(shù): 51/67頁
文件大?。?/td> 0K
描述: IC AFE 16BIT 8KSPS 1CH 32TQFP
標準包裝: 1,000
位數(shù): 16
通道數(shù): 1
電壓 - 電源,模擬: 2.7 V ~ 5.25 V
電壓 - 電源,數(shù)字: 1.7 V ~ 3.6 V
封裝/外殼: 32-TQFP
供應商設(shè)備封裝: 32-TQFP(5x5)
包裝: 帶卷 (TR)
Power Supplies
RESET
t
RST
StartUsingtheDevice
t
POR
18t
CLK
SBAS566A – DECEMBER 2011 – REVISED SEPTEMBER 2012
POWER-UP SEQUENCING
Before device power-up, all digital and analog inputs must be low. At the time of power-up, all of these signals
should remain low until the power supplies have stabilized, as shown in Figure 51. At this time, begin supplying
the master clock signal to the CLK pin. Wait for time tPOR, then transmit a RESET pulse. After releasing RESET,
the configuration register must be programmed, see the CONFIG1: Configuration Register 1 subsection of the
Register Map section for details. The power-up sequence timing is shown in Table 9.
Figure 51. Power-Up Timing Diagram
Table 9. Power-Up Sequence Timing
SYMBOL
DESCRIPTION
MIN
TYP
MAX
UNIT
tPOR
Wait after power-up until reset
211
tMOD
tRST
Reset low width
1
tMOD
SETTING THE DEVICE FOR BASIC DATA CAPTURE
The following section outlines the procedure to configure the device in a basic state and capture data. This
procedure is intended to put the device in a data sheet condition to check if the device is working properly in the
user's system. It is recommended that this procedure be followed initially to get familiar with the device settings.
Once this procedure has been verified, the device can be configured as needed. For details on the timings for
commands refer to the appropriate sections in the data sheet. Also, some sample programming codes are added
for the ECG-specific functions.
Copyright 2011–2012, Texas Instruments Incorporated
55
Product Folder Links: ADS1191 ADS1192
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