XR10910

16:1 Sensor Interface

Description

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 I2C compatible 2 wire serial interface. The serial interface also provides the user with easy controls to the XR10910's many functions such as input and gain selection.

An integrated LDO provides a regulated voltage to power the input bridge sensors and is selectable, between 3V and 2.65V, via the serial interface for lower voltage compatibility. The LDO current can be sensed and a proportional voltage present at the output of the IC for monitoring the LDO current.

The XR10910 offers 8 fixed gain settings (from 2V/V to 760V/V), each with an error of only ±0.5%, that are selectable via the I2C interface.

The XR10910 is designed to operate from 2.7V to 5V supplies and is specified over the industrial temperature range of -40°C to 85°C. It is offered in a space saving 6mm x 6mm QFN-40 package. It consumes less than 556µA maximum supply current and offers a sleep mode for added power savings.

Read More

Features

  • Force sensing
  • Integrated features for interfacing multiple bridge sensors with an MCU or FPGA:
    • 16:1 differential mux with I2C interface
    • Instrumentation amplifier
    • LDO
    • Offset correction DAC with I2C interface (±560mV offset correction range - RTI)
  • Eight selectable voltage gains from 2V/V to 760V/V with only ±0.5% gain error
  • 1mV maximum input offset voltage
  • 100pA maximum input bias current
  • 556µA 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
  • 6x6mm QFN-40

Application

  • Bridge sensor interface
  • Pressure & temperature sensors
  • Strain gauge amplifier
  • Weigh scales
  • Industrial process controls

Design Tools

Packaging

QFN40 6x6

  • JEDEC Reference: MO-220
  • MSL Pb-Free: L3 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 32.3ºC/W
  • Bulk Pack Style: Tray
  • Quantity per Bulk Pack: n/a
  • QUantity per Reel: 3000
  • Quantity per Tube: n/a
  • Quantity per Tray: 490
  • Reel Size (Dia. x Width x Pitch): 330 x 16 x 12
  • Tape & Reel Unit Orientation: Pin 1 at sprocket hole.
  • Dimensions: mm
  • Length: 6.00
  • Width: 6.00
  • Thickness: 0.90
  • Lead Pitch: 0.50

  • JEDEC Reference:
  • MSL Pb-Free:
  • MSL SnPb Eutectic:
  • ThetaJA:
  • Bulk Pack Style:
  • Quantity per Bulk Pack:
  • QUantity per Reel:
  • Quantity per Tube:
  • Quantity per Tray:
  • Reel Size (Dia. x Width x Pitch):
  • Tape & Reel Unit Orientation:
  • Dimensions:
  • Length:
  • Width:
  • Thickness:
  • Lead Pitch:

Parts & Purchasing

Part Number Pkg Code RoHS Min Temp Max Temp Status Buy Now Order Samples
XR10910IL40-F QFN40 6x6 -40 85 Active
XR10910IL40TR-F QFN40 6x6 -40 85 Active
XR10910IL40EVB Active
Show obsolete parts
Part Status Legend
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.
Distribution Date Description File