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기능 High Resolution 18-Bit Sensor Signal Conditioner
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ZSSC3018 데이터시트, 핀배열, 회로
Versatile, High Resolution 18-Bit
Sensor Signal Conditioner
ZSSC3018
Datasheet
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 1st and 2nd 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 I2C (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.
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; 1st and 2nd
order digital compensation of sensor gain as well as of 1st
and 2nd 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
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
Sleep Mode current: 50nA (typical) at 125°C; 20nA (typical)
at 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
ZSSC3018
24-PQFN
VDD
GND
EOC
MISO
MOSI/SDA
SCLK/SCL
SS
© 2017 Integrated Device Technology, Inc
1
January 10, 2017




ZSSC3018 pdf, 반도체, 판매, 대치품
ZSSC3018 Datasheet
3.7.4 Calibration Step 3b) Post-Calibration Offset Correction ..................................................................................................40
3.7.5 SSC Measurements ...........................................................................................................................................................41
3.8 The Calibration Math .........................................................................................................................................................................42
3.8.1 Bridge Signal Compensation ..............................................................................................................................................42
3.8.2 Temperature Signal Compensation....................................................................................................................................44
3.8.3 Measurement Output Data Format.....................................................................................................................................45
4. Packaging Dimensions and Pin Assignments ............................................................................................................................................46
5. Quality and Reliability .................................................................................................................................................................................48
6. Ordering Sales Codes ................................................................................................................................................................................48
7. Related Documents ....................................................................................................................................................................................48
8. Glossary .....................................................................................................................................................................................................48
9. Document 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 I2C Command Request ....................................................................................................................................................................29
Figure 3.11 I2C Read Status ...............................................................................................................................................................................29
Figure 3.12 I2C Read Data..................................................................................................................................................................................30
© 2017 Integrated Device Technology, Inc
4
January 10, 2017

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ZSSC3018 전자부품, 판매, 대치품
Table 1.3 Requirements for VDD Power-on Reset (POR)
PARAMETER
Power Down Time (duration of VDD Low Level)
VDD Low Level
VDD Rising Slope
SYMBOL
tSPIKE
VDDLOW
SRVDD
ZSSC3018 Datasheet
MIN TYP MAX UNIT
3 – – µs
0 0.2 V
10
V/ms
1.3 Electrical Parameters
All parameter values are valid only under the specified operating conditions. All voltages are referenced to Vss.
Table 1.4 Electrical Parameters
Note: See important table notes at the end of the table.
Parameter
Supply
External Sensor Supply Voltage,
ADC Reference Voltage
Symbol
VDDB
Conditions/Comments
Internally generated
Active State, average
Min Typ Max Unit
1.60 1.68 1.75
1050 1500
V
µA
Current Consumption
IVDD
Power Supply Rejection
20·log10(VDD/VDDB)
(see section 1.4)
PSRVDD
Analog-to-Digital Converter (ADC, A2D)
Resolution
rADC
ADC Clock Frequency
fADC
Conversion Rate
fS,raw
Amplifier
Gain
Gain Error
GAMP
GERR
Sleep Mode, idle current, 85°C
Sleep Mode, idle current, 125°C
VDD = 1.8V
VDD = 2V
20 250
nA
50 750
17 60 88 dB
32 65 91 dB
12 18 Bit
Internal ADC clock
0.9 1 1.1 MHz
Conversions per second for single 18-
bit external sensor A2D conversion
(w/o AZ)
1.1 kHz
Conversions per second for single 16-
bit temperature sensor A2D conversion
(w/o AZ)
2.3 kHz
64 steps
Referenced to nominal gain
6.6 216
-2.5 2.5 %
© 2017 Integrated Device Technology, Inc
7
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