参数资料
型号: ADS1191IPBSR
厂商: Texas Instruments
文件页数: 48/67页
文件大小: 0K
描述: IC AFE 16BIT 8KSPS 1CH 32TQFP
标准包装: 1,000
位数: 16
通道数: 1
电压 - 电源,模拟: 2.7 V ~ 5.25 V
电压 - 电源,数字: 1.7 V ~ 3.6 V
封装/外壳: 32-TQFP
供应商设备封装: 32-TQFP(5x5)
包装: 带卷 (TR)
RLD
OUT
VA2
Device 2
VA1
RLDINV
RLD
OUT
RLDIN/
RLDREF
VA2
Device N
VA1
Power-Down
RLDINV
RLD
OUT
VA2
Device 1
VA1
T
o
In
p
u
t
M
U
X
(AVDD+AVSS)
2
T
o
In
p
u
t
M
U
X
(AVDD+AVSS)
2
T
o
In
p
u
t
M
U
X
(AVDD+AVSS)
2
RLDIN/
RLDREF
RLDIN/
RLDREF
RLDINV
CEXT
REXT
SBAS566A – DECEMBER 2011 – REVISED SEPTEMBER 2012
The reference voltage for the right leg drive can be chosen to be internally generated (AVDD + AVSS)/2 or it can
be provided externally with a resistive divider. The selection of an internal versus external reference voltage for
the RLD loop is defined by writing the appropriate value to the RLDREF_INT bit in the MISC2 register.
If the RLD function is not used, the amplifier can be powered down using the PDB_RLD bit. This bit is also used
in daisy-chain mode to power-down all but one of the RLD amplifiers.
The functionality of the RLDIN pin is explained in the Input Multiplexer section. An example procedure to use the
RLD amplifier is shown in the Right Leg Drive subsection of the Quick-Start Guide section.
RLD Configuration with Multiple Devices
Figure 48 shows multiple devices connected to an RLD.
Figure 48. RLD Connection for Multiple Devices
52
Copyright 2011–2012, Texas Instruments Incorporated
Product Folder Links: ADS1191 ADS1192
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