SI7055-EVB datasheet, PDF - EEWORLD Datasheet

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SI7055-EVB: DescriptionEVAL BOARD FOR SI7055; CategoryDevelopment board/suite/development tools; File Size348KB，26 Pages; ManufacturerSilicon Laboratories Inc

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SI7055-EVB Overview

EVAL BOARD FOR SI7055

SI7055-EVB Parametric

Parameter Name	Attribute value
sensor type	temperature
Sensing range	-
interface	number
Sensitivity	±0.5°C
Voltage - Power	-
Embedded	-
What's included	plate
IC/parts used	Si7055

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Si7050/3/4/5-A20

C T

EMPERATURE

ENSORS

Features



High Accuracy Temperature

Sensors

±0.3 °C (max)



Si7054: ±0.4 °C (max)



Si7055: ±0.5 °C (max)



Si7050: ±1.0 °C (max)



Si7053:

Accuracy maintained over the

entire operating temperature and

voltage range



Low Power Consumption





195

nA average current @ 1 Hz

sample rate

Wide operating voltage



14-bit resolution

(1.9 to 3.6 V)



Factory calibrated



–40 to +125 °C operating range



I C interface



3x3 mm DFN package



Applications



Ordering Information:

See page 19.



HVAC/R

Thermostats

White goods

Computer equipment

Portable consumer devices

Asset tracking

Cold chain storage

Battery protection

Industrial controls

Medical equipment

Pin Assignments

Top View

Description

The Si705x Digital Temperature Sensors offer industry-leading low power

consumption and high accuracy across the entire operating voltage and

temperature range. These monolithic CMOS ICs feature a band-gap

temperature sensor element, an analog-to-digital converter with up to 14-

bit resolution, signal processing, calibration data, and an I

C interface.

The patented use of novel signal processing and analog design enables

the sensors to maintain their accuracy over a wide temperature and

voltage range, while consuming very little current.

The temperature sensors are factory-calibrated and the calibration data is

stored in the on-chip non-volatile memory. This ensures that the sensors

are fully interchangeable, with no recalibration or software changes

required.

The Si705x devices are available in a 3x3 mm DFN package, and the

industry-standard I

C interface can operate at up to 400 kHz. Requiring

just 195 nA of average current when sampled once per second, the

Si705x can operate for several years with just a single coin cell battery.

The Si705x devices offer an accurate, low-power, factory-calibrated

digital solution ideal for measuring temperature in applications ranging

from HVAC/R and asset tracking to industrial and consumer platforms.

SDA

GND

DNC

SCL

VDD

DNC

Patent Protected. Patents pending

Rev. 1.0 2/15

Si7050/3/4/5-A20

Si7050/3/4/5-A20

ABLE

Section

ONTENTS

Page

1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2. Typical Application Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

3. Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

5. I2C Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5.1. Issuing a Measurement Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.2. Reading and Writing User Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5.3. Electronic Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

5.4. Firmware Revision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

6. Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

6.1. Register Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

7. Pin Descriptions: Si705x (Top View) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

8. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

9. Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

9.1. Package Outline: 3x3 6-pin DFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

10. PCB Land Pattern and Solder Mask Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

11. Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

11.1. Si705x Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

11.2. Top Marking Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

12. Additional Reference Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Rev. 1.0

SI7055-EVB Related Products

	SI7055-EVB	SI7050-EVB	SI7053-EVB	SI7054-EVB
Description	EVAL BOARD FOR SI7055	EVAL BOARD FOR SI7050	EVAL BOARD FOR SI7053	EVAL BOARD FOR SI7054
sensor type	temperature	temperature	temperature	temperature
interface	number	number	number	number
Sensitivity	±0.5°C	±1°C	±0.3°C	±0.4°C
What's included	plate	plate	plate	plate
IC/parts used	Si7055	Si7050	Si7053	Si7054

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