ZSSC3018BA2D datasheet, PDF - EEWORLD Datasheet

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ZSSC3018BA2D: DescriptionWAFER-0, WFP; CategoryAnalog mixed-signal IC The signal circuit; File Size1MB，51 Pages; ManufacturerIDT (Integrated Device Technology); Environmental Compliance

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ZSSC3018BA2D Overview

WAFER-0, WFP

ZSSC3018BA2D Parametric

Parameter Name	Attribute value
Brand Name	Integrated Device Technology
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	IDT (Integrated Device Technology)
Parts packaging code	WAFER
Contacts	0
Manufacturer packaging code	DICEW
Reach Compliance Code	compliant
Analog Integrated Circuits - Other Types	ANALOG CIRCUIT
JESD-609 code	e3
Humidity sensitivity level	1
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
Terminal surface	Tin (Sn)
Maximum time at peak reflow temperature	NOT SPECIFIED

ZSSC3018BA2D Preview

Versatile, High Resolution 18-Bit

Sensor Signal Conditioner

Brief Description

The ZSSC3018 is a sensor signal conditioner (SSC) integrated

circuit for high-accuracy amplification and analog-to-digital

conversion of differential or pseudo-differential input signals.

Designed for high-resolution sensor module applications, the

ZSSC3018 can perform offset, span, and 1

and 2

order

temperature compensation of the measured signal. Developed for

correction of resistive bridge or absolute voltage sensors, it can

also provide a corrected temperature output measured with an

internal sensor.

The measured and corrected sensor values are provided at the

digital output pins, which can be configured as I

C (≤ 3.4MHz) or

SPI (≤ 10MHz). Digital compensation of signal offset, sensitivity,

temperature, and non-linearity is accomplished via a 26-bit internal

digital signal processor (DSP) running a correction algorithm.

Calibration coefficients are stored on-chip in a highly reliable, non-

volatile, multiple-time programmable (MTP) memory. Programming

the ZSSC3018 is simple via the serial interface. The interface is

used for the PC-controlled calibration procedure, which programs

the set of calibration coefficients in memory. The ZSSC3018

provides accelerated signal processing, increased resolution, and

improved noise immunity in order to support high-speed control,

safety, and real-time sensing applications with the highest

requirements for energy efficiency.

ZSSC3018

Datasheet

Benefits



Integrated 26-bit calibration math DSP

Fully corrected signal at digital output

Layout customized for die-die bonding with sensor for high-

density chip-on-board assembly

One-pass calibration minimizes calibration costs

No external trimming, filter, or buffering components required

Highly integrated CMOS design

Integrated reprogrammable non-volatile memory

Excellent for low-voltage and low-power battery applications

Optimized for operation in calibrated resistive sensor

(e.g., pressure) or calibrated absolute voltage sensor

(e.g., thermopile) modules

Physical Characteristics

Supply voltage range: 1.68V to 3.6V



Current consumption: ~1.0mA (typical) in operating mode



Features



Flexible, programmable analog front-end design; up to 18-bit

analog-to-digital converter (ADC)

Fully programmable gain amplifier with gain range from 6.6 to

216 (linear)

Internal auto-compensated temperature sensor

Digital compensation of individual sensor offset; 1

and 2

order digital compensation of sensor gain as well as of 1

and 2

order temperature gain and offset drift

Programmable interrupt operation

High-speed sensing: e.g., 16-bit conditioned sensor signal

measurement rate >500s

-1

Typical sensor system can achieve an accuracy of better than

0.10% FSO*

-40 to 125°C



Sleep Mode current: 50nA (typical) at

125°C;

20nA (typical)

85°C

Temperature resolution: <0.003K/LSB

Best-in-class energy-efficiency:

with 16-bit resolution: <140pJ/step

with 18-bit resolution: <50pJ/step

Operation temperature: –40°C to +125°C

Delivery options: die or 24-PQFN (4 x 4 mm) package

FSO = Full Scale Output.

ZSSC3018 Application Example

Sensor Bridge

VDD

GND

ZSSC3018

24-PQFN

EOC

MISO

MOSI/SDA

SCLK/SCL

September 8, 2020

ZSSC3018 Datasheet

Block Diagram

(Bridge Sensor Example)

VDDB

Vreg int

Temperature

Reference

Sensor

VDD

AGND / CM

Generator

Bias Current

Generator

Voltage Regulator

Power Ctr.

VSS

ZSSC3018

Multiplexer

MUX

INP

PGA

Pre-Amplifier

ADC

Sensor

Bridge

INN

18 bit

18 Bit

DSP Core

(Calculations,

Communication)

EOC

SPI

VSSB

Power-ON

Reset

Clock Generator

Oscillator

Analog

Digital

System

Control Unit

MTP

SCLK/SCL

MOSI/SDA

MISO

RES

I²C

Interface

Functionality Support

Applications



Barometric altitude measurement for portable

navigation or emergency call systems



Altitude measurement for car navigation



Weather forecast

Fan control



Industrial, pneumatic, and liquid pressure



High-resolution temperature measurements



Object-temperature radiation (via thermopile)



September 8, 2020

ZSSC3018 Datasheet

Table of Contents

IC Characteristics .........................................................................................................................................................................................6

1.1 Absolute Maximum Ratings .................................................................................................................................................................6

1.2 Operating Conditions ...........................................................................................................................................................................6

1.3 Electrical Parameters ..........................................................................................................................................................................7

1.4 Power Supply Rejection Ratio (RSRR) versus Frequency ..................................................................................................................9

Circuit Description ......................................................................................................................................................................................10

2.1 Brief Description ................................................................................................................................................................................10

2.2 Signal Flow and Block Diagram .........................................................................................................................................................10

2.3 Analog Front End...............................................................................................................................................................................12

2.3.1

2.3.2

2.3.3

2.3.4

2.3.5

2.3.6

2.4.1

2.4.2

2.4.3

2.4.4

2.4.5

Amplifier..............................................................................................................................................................................12

Analog-to-Digital Converter ................................................................................................................................................13

Selection of Gain and Offset – Sensor System Dimensioning............................................................................................15

Temperature Measurement ................................................................................................................................................16

External Sensor Supply: Bridge Sensors............................................................................................................................16

External Sensor: Absolute Voltage Source Sensors ..........................................................................................................16

Digital Signal Processor (DSP) Core ..................................................................................................................................17

MTP Memory ......................................................................................................................................................................17

Clock Generator .................................................................................................................................................................17

Power Supervision..............................................................................................................................................................17

Interface..............................................................................................................................................................................17

2.4 Digital Section....................................................................................................................................................................................17

Functional Description ................................................................................................................................................................................18

3.1 Power-Up...........................................................................................................................................................................................18

3.2 Measurements ...................................................................................................................................................................................18

3.3 Interrupt (EOC Pin) ............................................................................................................................................................................18

3.4 Operational Modes ............................................................................................................................................................................20

3.4.1

3.5.1

3.5.2

3.5.3

3.6.1

3.6.2

3.7.1

3.7.2

3.7.3

SPI/I

C Commands ............................................................................................................................................................23

Common Functionality ........................................................................................................................................................26

SPI ......................................................................................................................................................................................27

C.......................................................................................................................................................................................29

Programming Memory ........................................................................................................................................................30

Memory Contents ...............................................................................................................................................................31

Calibration Step 1 – Assigning Unique Identification ..........................................................................................................39

Calibration Step 2 – Data Collection ...................................................................................................................................39

Calibration Step 3a) – Coefficient Calculations ..................................................................................................................40

3.5 Communication Interface...................................................................................................................................................................26

3.6 Memory..............................................................................................................................................................................................30

3.7 Calibration Sequence ........................................................................................................................................................................39

September 8, 2020

ZSSC3018 Datasheet

3.7.4

3.7.5

3.8.1

3.8.2

3.8.3

Calibration Step 3b) – Post-Calibration Offset Correction ..................................................................................................40

SSC Measurements ...........................................................................................................................................................41

Bridge Signal Compensation ..............................................................................................................................................42

Temperature Signal Compensation ....................................................................................................................................44

Measurement Output Data Format .....................................................................................................................................45

3.8 The Calibration Math .........................................................................................................................................................................42

Packaging Dimensions and Pin Assignments ............................................................................................................................................46

Quality and Reliability .................................................................................................................................................................................48

Ordering Information...................................................................................................................................................................................48

Related Documents ....................................................................................................................................................................................48

Glossary .....................................................................................................................................................................................................48

Revision History..........................................................................................................................................................................................50

Table of Figures

Figure 2.1 ZSSC3018 Functional Block Diagram, Resistive-Bridge-Sensor .....................................................................................................10

Figure 2.2 ZSSC3018 Functional Block Diagram, Voltage-Source-Sensor ......................................................................................................11

Figure 2.3 ADC Gain and Offset Setup .............................................................................................................................................................16

Figure 3.1 Interrupt Functionality: INT_setup = 01 and INT_setup = 10 ...........................................................................................................19

Figure 3.2 Interrupt Functionality: INT_setup = 11 ............................................................................................................................................20

Figure 3.3 Operational Flow Chart: Power Up ..................................................................................................................................................21

Figure 3.4 Operational Flow Chart: Command Mode and Normal Mode (Sleep and Cyclic) ............................................................................22

Figure 3.5 SPI Configuration CPHA=0 ..............................................................................................................................................................27

Figure 3.6 SPI Configuration CPHA=1 ..............................................................................................................................................................27

Figure 3.7 SPI Command Request ...................................................................................................................................................................28

Figure 3.8 SPI Read Status ..............................................................................................................................................................................28

Figure 3.9 SPI Read Data .................................................................................................................................................................................28

Figure 3.10 I

C Command Request ....................................................................................................................................................................29

Figure 3.11 I

C Read Status ...............................................................................................................................................................................29

Figure 3.12 I

C Read Data ..................................................................................................................................................................................30

September 8, 2020

ZSSC3018 Datasheet

List of Tables

Table 1.1

Table 1.2

Table 1.3

Table 1.4

Table 2.1

Table 2.2

Table 2.3

Table 2.4

Table 2.5

Table 2.6

Table 3.1

Table 3.2

Table 3.3

Table 3.4

Table 3.5

Table 3.6

Table 3.7

Table 3.8

Table 3.9

Table 4.1

Table 4.2

Absolute Maximum Ratings ...............................................................................................................................................................6

Operating Conditions .........................................................................................................................................................................6

Requirements for VDD Power-on Reset (POR) .................................................................................................................................7

Electrical Parameters .........................................................................................................................................................................7

Amplifier Gain: Stage 1 ....................................................................................................................................................................12

Amplifier Gain: Stage 2 ....................................................................................................................................................................12

Gain Polarity ....................................................................................................................................................................................13

ADC Conversion Times for a Single A2D Conversion .....................................................................................................................13

ADC Offset Shift ...............................................................................................................................................................................14

Typical Conversion Times versus Noise Performance with Full Sensor Signal Conditioning for Measurement Including AZSM,

SM, AZTM, and TM (Bridge-Type Sensor) ......................................................................................................................................14

SPI/I

C Commands ..........................................................................................................................................................................23

Get_Raw Commands .......................................................................................................................................................................25

General Status Byte .........................................................................................................................................................................26

Mode Status .....................................................................................................................................................................................26

MTP Memory Content Assignments ................................................................................................................................................31

Measurement Results of ADC Raw Measurement Request (Two’s Complement) ..........................................................................45

Calibration Coefficients (Factors and Summands) in Memory (Sign-Magnitude) ............................................................................45

Output Results from SSC-Correction Math or DSP—Sensor and Temperature ..............................................................................45

Interrupt Thresholds TRSH1 and TRSH2—Format as for SSC-Correction Math Output.................................................................45

24-PQFN Dimensions (4 x 4 mm) ....................................................................................................................................................46

Pin Assignments 24-PQFN ..............................................................................................................................................................47

September 8, 2020

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ZSSC3018BA2D Related Products

	ZSSC3018BA2D	ZSSC3018BA2B	ZSSC3018BA2C
Description	WAFER-0, WFP	WAFER-0, Wafer	WAFER-0, Wafer
Brand Name	Integrated Device Technology	Integrated Device Technology	Integrated Device Technology
Is it lead-free?	Lead free	Lead free	Lead free
Is it Rohs certified?	conform to	conform to	conform to
Maker	IDT (Integrated Device Technology)	IDT (Integrated Device Technology)	IDT (Integrated Device Technology)
Parts packaging code	WAFER	WAFER	WAFER
Manufacturer packaging code	DICEW	DICE	DICEF
Reach Compliance Code	compliant	compliant	compliant
Analog Integrated Circuits - Other Types	ANALOG CIRCUIT	ANALOG CIRCUIT	ANALOG CIRCUIT
JESD-609 code	e3	e3	e3
Humidity sensitivity level	1	1	1
Peak Reflow Temperature (Celsius)	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
Terminal surface	Tin (Sn)	Tin (Sn)	Tin (Sn)
Maximum time at peak reflow temperature	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED

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