参数资料
型号: ADS1298RIZXGT
厂商: TEXAS INSTRUMENTS INC
元件分类: 模拟信号调理
英文描述: SPECIALTY ANALOG CIRCUIT, PBGA64
封装: 8 X 8 MM, LEAD FREE, PLASTIC, NFBGA-64
文件页数: 64/87页
文件大小: 1430K
代理商: ADS1298RIZXGT
RLD
Amp
(AVDD+AVSS)/2
RLDREF_INT
RLD_REF
RLD_OUT
RLD_INV
RLD
ADS129x
WCT_TO_RLD
FromWCTAmplifiers
RLD_REF
WCT
RLDINV
RLD
OUT
RLD
REF
RLDIN
VA1-8
Device2
VA1-8
RLDINV
RLD
OUT
RLD
REF
RLDIN
VA1-8
DeviceN
VA1-8
Power-Down
RLDINV
RLD
OUT
RLD
REF
RLDIN
VA1-8
Device1
VA1-8
ToInputMUX
SBAS459H
– JANUARY 2010 – REVISED MAY 2011
WCT as RLD
In certain applications, the right leg drive is derived as the average of RA, LA, and LL. This level is the same as
the WCT voltage. The WCT amplifier has limited drive strength and thus should be used only to drive very high
impedances directly. The ADS129x provide an option to internally buffer the WCT signal by setting the
WCT_TO_RLD bit in the CONFIG4 register. The RLD_OUT and RLD_INV pins should be shorted external to the
device. Note that before the RLD_OUT signal is connected to the RLD electrode, an external amplifier should be
used to invert the phase of the signal for negative feedback.
Figure 62. Using the WCT as the Right Leg Drive
RLD Configuration with Multiple Devices
Figure 63 shows multiple devices connected to an RLD.
Figure 63. RLD Connection for Multiple Devices
Copyright
2010–2011, Texas Instruments Incorporated
67
相关PDF资料
PDF描述
ADSP-1401TN/883B 16-BIT, MICROPROGRAM SEQUENCER, PDIP48
ADSP-21160NCB-100 64-BIT, 50 MHz, OTHER DSP, PBGA400
ADSP-21365YSWZ-2BA 16-BIT, 55.55 MHz, OTHER DSP, PQFP144
ADSP-2181BS-160 24-BIT, 20 MHz, OTHER DSP, PQFP128
ADUC845BCPZ8-3 8-BIT, FLASH, 12.58 MHz, MICROCONTROLLER, QCC56
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