SI7055-A20-IMR datasheet, PDF - EEWORLD Datasheet

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SI7055-A20-IMR: Description± 0.1 ºc To ±1 ºc Maximum Accuracy 1.8 V Supply Digital I²C Temperature Sensors; File Size507KB，26 Pages; ManufacturerSilicon Labs; Websitehttps://www.silabs.com

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SI7055-A20-IMR Overview

± 0.1 ºc To ±1 ºc Maximum Accuracy 1.8 V Supply Digital I²C Temperature Sensors

SI7055-A20-IMR Parametric

Parameter Name	Attribute value
EU restricts the use of certain hazardous substances	Compliant
ECCN (US)	EAR99
Part Status	Active
HTS	8542.39.00.01
Module/IC Classification	IC
Resolution (bit)	14
Accuracy	±0.4°C
Interface Type	Serial (I2C)
Output Type	Digital
Minimum Operating Supply Voltage (V)	1.9
Typical Operating Supply Voltage (V)	2.5\|3.3
Maximum Operating Supply Voltage (V)	3.6
Minimum Operating Temperature (°C)	-40
Maximum Operating Temperature (°C)	125
Packaging	Tape and Reel
Pin Count	6
Standard Package Name	DFN
Supplier Package	DFN EP
Mounting	Surface Mount
Package Height	0.73
Package Length	3
Package Width	3
PCB changed	6
Lead Shape	No Lead

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Si7050/1/3/4/5-A20

C T

EMPERATURE

ENSORS

Features



High Accuracy Temperature

Sensors

±0.1 °C (max)



Si7053: ±0.3 °C (max)



Si7054: ±0.4 °C (max)



Si7055: ±0.5 °C (max)



Si7050: ±1.0 °C (max)



Si7051:

Accuracy maintained over the

entire operating temperature and

voltage range



Low Power Consumption





195

nA average current @ 1 Hz

sample rate

Wide operating voltage

(1.9 to 3.6 V)



I C interface



–40 to +125 °C operating range



3x3 mm DFN package



14-bit resolution



Factory calibrated



Applications



Ordering Information:

See page 19.

Pin Assignments

Top View

HVAC/R

Thermostats

White goods

Computer equipment

Portable consumer devices



Asset tracking

Cold chain storage

Battery protection

Industrial controls

Medical equipment

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. 1.15 9/18

Si7050/1/3/4/5-A20

Si7050/1/3/4/5-A20

ABLE O F

ONTENTS

Section

Page

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

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

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

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

5. I

C 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

11. Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

11.1. Si705x Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

11.2. Top Marking Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

11.3. Si7055-A20-ZM (Matte Tin Finish Lead Frame) Top Marking . . . . . . . . . . . . . . . . . 23

11.4. Si7055-A20-ZM (Matte Tin Finish Lead Frame) Top Marking Explanation . . . . . . . 23

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

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

Rev. 1.15

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