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ZSSC3281 Datasheet(PDF) 23 Page - Renesas Technology Corp

Part # ZSSC3281
Description  Advanced Dual Channel ARM based Resistive Sensor Signal Conditioner IC
PDF  102 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

ZSSC3281 Datasheet(HTML) 23 Page - Renesas Technology Corp

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ZSSC3281 Datasheet
R33DS0020ED0100 Rev. 1.0
Jun.13.22
Page 23
© 2022 Renesas Electronics
ITbias
VSS
TOP1/2
BOT1/2
A ref+
ref-
VDDA
D
in+
in-
RTH
INN1/2
INP1/2
OR
Rbr
OR
RTL
OR
OR
OR
RH
RL
Legend:
Gray components: can be activated either-or via the GUI.
Figure 12: Resistive Bridge Bias Configurations
In constant current mode the bridge output must be set into the common input range of the PGA. This can be done
with a low side external resistor RL or with the internal resistor RTL.
In constant Voltage Mode the bridge current can be reduced by inserting the internal high and low side resistors
RTH, RTL or by adding external resistors RH and RL.
Table 9: Resistive Bridge Supply Parameters
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VTOP1/2
Output voltage at TOP1/2
Direct voltage output
VDDA
V
Cload
Load capacitance
2.2
nF
Iload
Load current
2
mA
ITbias
Current out of TOP1/2
5
500
µA
RTH, RTL
Bias resistor
1.3
40
k
Ω



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