ZSSC3138 Datasheet

© 2016 Integrated Device Technology, Inc.

14

January 25, 2016

Figure 2.2

Measurement Cycle with 1 Bridge Sensor Signal Measurement per Special Measurement

CTAZ

CT

BRAZ

BR

BR

BR

BRAZ

BR

CTAZ

CT

BR

BR

CMV

SSCP

SSCN

12

Measurements

per Cycle

Measurement Cycle

Measurement Cycle with Bridge Signal Output

CFGAPP:BRCNT = 0

(1 bridge sensor signal measurement per special measurement)

Startup

BR

Bridge Sensor

Measurement

BRAZ

Bridge Sensor

Auto-Zero Measurement

CT

Calibration Temperature

Measurement

CTAZ

Calibration Temperature

Auto-Zero Measurement

Bridge Sensor Signal

Main Signals Measurement

Measurement Cycle Phases

Analog Output Updated

Positive-Biased Measurement

Negative-Biased Measurement

CMV

Sensor Common Mode Voltage

Measurement

Safety Functions Measurement *

* Not available for all ZSSC313x products. See Table 1.1

in the ZSSC313x Functional Description.

2.3.4.

Analog-to-Digital Converter

The A/D converter is implemented using full-differential switched-capacitor technique.

range zooming.

The A/D conversion is integrating, inherently monotone, and insensitive to short and long term instability of the

equation (1):













=

2

f

2

t

OSC

r

ADC

ADC

(1)

Where

Resolution of A/D conversion

Frequency of internal oscillator (refer to 1.3.1)