XR18910ILMTR-64 datasheet, PDF

Datasheet> All Categories > semiconductor> Analog mixed-signal IC> XR18910ILMTR-64

XR18910ILMTR-64: DescriptionBluetooth / 802.15.1 Development Tools Blue Gecko BGM121 u0026 BGM111 SIP Radio; Categorysemiconductor Analog mixed-signal IC; File Size805KB，19 Pages; ManufacturerExar [Exar Corporation]

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Bluetooth / 802.15.1 Development Tools Blue Gecko BGM121 u0026 BGM111 SIP Radio

XR18910ILMTR-64 Parametric

Parameter Name	Attribute value
Product Category	Sensor Interface
Manufacturer	Exar [Exar Corporation]
RoHS	Details
Type	Sensor Interface Analog Front End
Interface Type	I2C
Supply Voltage - Max	5.25 V
Supply Voltage - Min	1.7 V
Operating Supply Current	457 uA
Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 85 C
Mounting Style	SMD/SMT
Package / Case	QFN-24
Packaging	Reel
Packaging	MouseReel
Packaging	Cut Tape
Development Kit	XR18910ILEVB
Features	8:1 Differential MUX, INA, LDO, Offset Correction DAC
Ib - Input Bias Current	15 pA
Input Current	457 uA
Input Voltage	1.7 V to 5.25 V
Number of Channels	8 Channel
Operating Supply Voltage	1.7 V to 5.25 V
Output Current	25 mA
Output Voltage	3 V
Product	Sensor Interface
Reference Type	Internal
Reference Voltage	1.5 V
Factory Pack Quantity	250

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XR18910

8:1 Sensor Interface Analog Front End

Description

The

XR18910

is a unique sensor interface integrated circuit with an

onboard 8:1 multiplexer, offset correction Digital-to-Analog Converter

(DAC), instrumentation amplifier and voltage reference. The XR18910

is designed to integrate multiple bridge sensors with a Microcontroller

(MCU) or Field-Programmable Gate Array (FPGA).

The integrated offset correction DAC provides digital calibration of the

variable and in many cases substantial offset voltage generated by the

bridge sensors. The DAC is controlled by an I

C compatible 2-wire serial

interface. The serial interface also provides the user with easy controls

to the XR18910’s many functions such as input and gain selection.

A linear regulator (LDO) provides a regulated voltage to power the input

bridge sensors and is selectable, between 3V and 2.65V. The LDO

current can be sensed and a proportional voltage present at the output

of the IC for monitoring the LDO current.

The XR18910 offers 8 fixed gain settings (from 2V/V to 760V/V), each

with an error of only ±0.5%, that are selectable via the I

C interface.

It also offers less than 3mV maximum input offset voltage, 100pA

maximum input bias current, and 100pA maximum input offset current.

The XR18910 is designed to operate from 2.7V to 5V supplies, specified

over the industrial temperature range of -40°C to 85°C and is offered in

a space saving 3.5mm x 3.5mm QFN package. It consumes less than

559μA supply current and offers a sleep mode for added power savings.

The XR18910 is well suited for industrial and consumer applications

using bridge sensors.

FEATURES

■■

Integrated features for interfacing multiple

bridge sensors with an MCU or FPGA

8:1 differential MUX with I

C interface

Instrumentation amplifier

LDO

Offset correction DAC with I

C interface

(±560mV offset correction range)

■

Eight selectable voltage gains from 2V/V to

760V/V with only ±0.5% gain error

■

3mV maximum input offset voltage

■

100pA maximum input bias current

■

559μA maximum supply current

■

2.7V to 5V analog supply voltage range

■

1.8V to 5V digital supply voltage range

■

-40°C to 85°C temperature range

■

3.5mm x 3.5mm QFN-24 package

APPLICATIONS

■

Bridge sensor interface

■

Pressure and temperature sensors

■

Strain gauge amplifier

■

Industrial process controls

■

Weigh scales

Typical Application

6.8 F

0.1 F

BRDG

BRIDGE 8

VCC

0.1 F

VDD

2.5

0.1 F

1.5

RTI Noise (µV)

0.5

-0.5

-1

-1.5

-2

-2.5

Time (seconds)

LDO

IN8+

IN8-

INA /

PGA

8:1

MUX

BRIDGE 1

IN1+

IN1-

OUT

10k

10nF

ADC

µC

±560mV

OFFSET TRIM

10-BIT

DAC

PGA

SDA

4.7k

CONTROL

SCL

XR18910

AGND

DGND

Figure 1. Typical Application

REV1A

Figure 2. 0.1Hz to 10Hz RTI Voltage Noise

1/19

XR18910ILMTR-64 Related Products

	XR18910ILMTR-64	XR18910IL-67	XR18910ILEVB	XR18910IL-64	XR18910ILTR-64	XR18910ILMTR-67	XR18910ILMTR-66	XR18910ILMTR-65
Description	Bluetooth / 802.15.1 Development Tools Blue Gecko BGM121 u0026 BGM111 SIP Radio	Interface Development Tools XR18910 Evaluation Board	Sensor Interface 8:1 Sensor Interface slave address 64	Interface Development Tools XR18910 Evaluation Board	Interface Development Tools XR18910 Evaluation Board	Interface Development Tools XR18910 Evaluation Board	Interface Development Tools XR18910 Evaluation Board	Interface Development Tools XR18910 Evaluation Board
Product Category	Sensor Interface	Sensor Interface	Interface Development Tools	Sensor Interface	Sensor Interface	Sensor Interface	Sensor Interface	Sensor Interface
Manufacturer	Exar [Exar Corporation]	Exar [Exar Corporation]	Exar [Exar Corporation]	Exar [Exar Corporation]	Exar [Exar Corporation]	Exar [Exar Corporation]	Exar [Exar Corporation]	Exar [Exar Corporation]
RoHS	Details	Details	Details	Details	Details	Details	Details	Details
Type	Sensor Interface Analog Front End	Sensor Interface Analog Front End	Sensor Interface	Sensor Interface Analog Front End	Sensor Interface Analog Front End	Sensor Interface Analog Front End	Sensor Interface Analog Front End	Sensor Interface Analog Front End
Interface Type	I2C	I2C	I2C	I2C	I2C	I2C	I2C	I2C
Minimum Operating Temperature	- 40 C	- 40 C	- 40 C	- 40 C	- 40 C	- 40 C	- 40 C	- 40 C
Maximum Operating Temperature	+ 85 C	+ 85 C	+ 85 C	+ 85 C	+ 85 C	+ 85 C	+ 85 C	+ 85 C
Operating Supply Voltage	1.7 V to 5.25 V	1.7 V to 5.25 V	2.7 V to 5 V	1.7 V to 5.25 V	1.7 V to 5.25 V	1.7 V to 5.25 V	1.7 V to 5.25 V	1.7 V to 5.25 V
Product	Sensor Interface	Sensor Interface	Evaluation Boards	Sensor Interface	Sensor Interface	Sensor Interface	Sensor Interface	Sensor Interface
Factory Pack Quantity	250	490	1	490	3000	250	250	250
Supply Voltage - Max	5.25 V	5.25 V	-	5.25 V	5.25 V	5.25 V	5.25 V	5.25 V
Supply Voltage - Min	1.7 V	1.7 V	-	1.7 V	1.7 V	1.7 V	1.7 V	1.7 V
Operating Supply Current	457 uA	457 uA	-	457 uA	457 uA	457 uA	457 uA	457 uA
Mounting Style	SMD/SMT	SMD/SMT	-	SMD/SMT	SMD/SMT	SMD/SMT	SMD/SMT	SMD/SMT
Package / Case	QFN-24	QFN-24	-	QFN-24	QFN-24	QFN-24	QFN-24	QFN-24
Packaging	Cut Tape	Tray	Bulk	Tray	Reel	Cut Tape	Cut Tape	Cut Tape
Development Kit	XR18910ILEVB	XR18910ILEVB	-	XR18910ILEVB	XR18910ILEVB	XR18910ILEVB	XR18910ILEVB	XR18910ILEVB
Features	8:1 Differential MUX, INA, LDO, Offset Correction DAC	8:1 Differential MUX, INA, LDO, Offset Correction DAC	-	8:1 Differential MUX, INA, LDO, Offset Correction DAC	8:1 Differential MUX, INA, LDO, Offset Correction DAC	8:1 Differential MUX, INA, LDO, Offset Correction DAC	8:1 Differential MUX, INA, LDO, Offset Correction DAC	8:1 Differential MUX, INA, LDO, Offset Correction DAC
Ib - Input Bias Current	15 pA	15 pA	-	15 pA	15 pA	15 pA	15 pA	15 pA
Input Current	457 uA	457 uA	-	457 uA	457 uA	457 uA	457 uA	457 uA
Input Voltage	1.7 V to 5.25 V	1.7 V to 5.25 V	-	1.7 V to 5.25 V	1.7 V to 5.25 V	1.7 V to 5.25 V	1.7 V to 5.25 V	1.7 V to 5.25 V
Number of Channels	8 Channel	8 Channel	-	8 Channel	8 Channel	8 Channel	8 Channel	8 Channel
Output Current	25 mA	25 mA	-	25 mA	25 mA	25 mA	25 mA	25 mA
Output Voltage	3 V	3 V	-	3 V	3 V	3 V	3 V	3 V
Reference Type	Internal	Internal	-	Internal	Internal	Internal	Internal	Internal
Reference Voltage	1.5 V	1.5 V	-	1.5 V	1.5 V	1.5 V	1.5 V	1.5 V

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