ZSSC4151 Evaluation Kit Hardware Manual
© 2016 Integrated Device Technology, Inc.
4
March 11, 2016
The ZSSC4151 SSC Evaluation Kit contains the hardware needed for communication and calibration of the
ZSSC4151 sensor signal conditioning IC. The user’s PC can communicate with the ZSSC4151 on the SSC EB
via the SSC Communication Board (SSC CB) through a USB connection. The Sensor Replacement Board (SRB)
provides a replacement for an actual sensor and can be used for the first step of a calibration demonstration or a
dry-run calibration. On the SRB, the sensor replacement signal is controlled by a potentiometer and provides a
signal ranging from 2mV to 110mV to the analog front-end of the ZSSC4151 (BRN and BRP pins via the BR1N
and BR1P pins respectively on the K10 connector; see Figure 2.2) and a temperature sensor signal from a
1N4148 diode to the ZSSC4151 temperature input (TS1 or TS2 pin, selectable by jumper K8, see Figure 2.1).
One of the primary purposes of the ZSSC4151 Evaluation Kit is communication between the user’s PC and the
ZSSC4151 DUT. The PC sends commands and data via its USB port (configured as a virtual COM port) to the
SSC CB. The microcontroller on the SSC CB interprets these commands and relays them to the ZSSC4151 in the
I²C™
*
or OWI
†
(One-Wire Interface) communication mode.
The microcontroller will also forward any data bytes from the ZSSC4151 back to the PC via the USB connection.
These bytes can be sensor and temperature readings to be displayed via the GUI, raw analog-to-digital converter
(ADC) data used during calibration, or EEPROM data. The SSC CB microcontroller controls the power signals
required for entering the Command Mode (when the OWI interface is used).
The ZSSC4151 power (VDDE) can be supplied from the CB KS5V power supply (jumper K7 closed; refer to
Figure 2.1) or from an externally connected VDDE2 supply (jumper K7 open).
Important:
Ensure that jumper K7 is open before connecting an external VDDE2 power supply.
If connected, the VDDE2 supply can be switched ON or OFF by the CB-controlled KS5V and the IC4 power
MOSFET as needed to establish OWI communication.
The reset button (see Figure 1.1) initializes the CB controller to its initial state. Note that
any CB port settings
will be overwritten
.
The Mass Calibration Board DUT connector is intended for connecting the ZSSC415x/6x/7x Evaluation Board
(SSC EB) to a Mass Calibration Board (MCB) for evaluation. The connector provides an I
2
C™ and OWI interface
through the MCB and provides power to it.
Important
: Do not connect the SSC CB to the SSC EB if the MCB is used.
*
I
2
C™ is a trademark of NXP.
†
OWI is also referred to as ZACwire™.
