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ZSSC3138BA2R

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P25
ZSSC3138
Datasheet
© 2016 Integrated Device Technology, Inc.
19
January 25, 2016
2.9. High Voltage, Reverse Polarity, and Short Circuit Protection
The ZSSC3138 is designed for 5V power supply operation.
The ZSSC3138 and the connected sensor are protected from overvoltage and reverse polarity damage by an
internal supply voltage limiter. The analog output AOUT can be connected (short circuit, overvoltage, and reverse
polarity) with all potentials in the protection range under all potential conditions at the pins VDDE and VSSE.
To guarantee this operation, all external components (see application circuit in section 3) are required. The
protection is not time-limited.
Refer to the ZSSC313x High Voltage Protection Description for a detailed description of protection cases and
conditions.
ZSSC3138
Datasheet
© 2016 Integrated Device Technology, Inc.
20
January 25, 2016
3 Application Circuit Examples
The application circuits contain external components that are needed for overvoltage, reverse polarity, and short
circuit protection.
Note: Also check the ZSSC313x application notes for application examples and board layout.
Table 3.1 External Components for Application Circuit Examples
Symbol Component Min Typ
2)
Max Unit Remarks
C1
Capacitor 100 470 nF
C2
Capacitor 100 nF
C3
1)
Capacitor 4 47 160 nF Value includes the load capacitor C3 and the
capacitance of the connection cable.
C4, C5
1)
Capacitor 0 10 nF Recommended to increase EMI immunity.
Value includes the filter capacitor C4 and C5
and the sensor connection line capacitance.
1) Increasing capacitors C3, C4, and C5 increases EMI immunity.
2) Dimensioning is only for example and must be adapted to the requirements of the application.
Figure 3.1 Application with On-Chip Diode Temperature Sensor
Serial Interface
Sensor Bridge
SDA
SCL
Out / OWI
GND
V
SUPP
C3
47
nF
+4.5V to +5
.5V
ZSSC
3138
2
1
3
4
6
5
7
14
13
11
12
10
VDDA
VSSA
SDA
SCL
n.c
.
VDD
VDDE
n.c.
VBR_
T
VBP
VBR_B
VBN
AOUT
VSSE
9
8
C
2
100nF
C1
100nF
C5C4
ZSSC3138
Datasheet
© 2016 Integrated Device Technology, Inc.
21
January 25, 2016
4 Pin Configuration and Package
Table 4.1 Pin Configuration and Definition
Pin No Pin Name Description Remarks
1
VDDA Positive Analog Supply Voltage Internal analog supply
2
VSSA Negative Analog Supply Voltage Internal analog ground
3
SDA I²C™ Serial Data Digital I/O; internal pull-up to VDDA
4
SCL I²C™ Clock Digital input; internal pull-up to VDDA
5
N.C. Not connected
6
VDD Positive Digital Supply Voltage Internal digital supply
7
VDDE Positive External Supply Voltage High voltage analog supply
8
VSSE Negative External Supply Voltage Ground
9
AOUT Analog Output
and ZACwire
TM
Serial Data
High voltage analog I/O
10
VBN Negative Input from Sensor Bridge Analog input
11
VBR_B Negative Sensor Bridge Supply Voltage Analog I/O
Depending on application circuit, short to VSSA
12
VBP Positive Input from Sensor Bridge Analog input
13
VBR_T Positive Sensor Bridge Supply Voltage Analog I/O
Depending on application circuit, short to VDDA
14
N.C. Not connected
The standard package of the ZSSC3138 is an RoHS-compliant SSOP14 “green” package (5.3mm body width)
with a lead pitch of 0.65 mm.
Figure 4.1 ZSSC3138 SSOP14 Pin Diagram
VDDE
VDD
N
.C.
SCL
SDA
VSSA
VDDA
VSSE
AOUT
VBN
VBR_
B
VBP
VBR_T
N.C.
ZSSC
3138BPPPP
LLLLLLLL
14
1
YYWW
B Revision
PPPP Product and Package Code
LLLLLLLL Lot Number
YYWW Date Code (Year, Work Week)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P25

ZSSC3138BA2R

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Description:
Sensor Interface Sensor Signal Conditoner
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