LMP91300 Datasheet, PDF (1/37 Pages) Texas Instruments – LMP91300 Industrial Inductive Proximity Sensor AFE

LMP91300
www.ti.com
SNOSCS3A – SEPTEMBER 2013 – REVISED OCTOBER 2013
LMP91300 Industrial Inductive Proximity Sensor AFE
Check for Samples: LMP91300
FEATURES
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• Post production Configuration and Calibration
• Programmable Decision Thresholds
• Programmable Hysteresis
• Flexible Overload Protection
• Digital Temperature Compensation
• Integrated LED driver
• Small Form Factor, Supports 4mm Sensors
(DSBGA Package)
• Low Power Consumption
• Integrated Voltage Regulator
• 3 Wire Capability
• Supports NPN and PNP Modes
• Normally Open (NO) and Normally Closed (NC)
Supported
• 16-bit Resolution Threshold Setting
APPLICATIONS
• Industrial Proximity Detection
• Industrial Production Lines
• Industrial Automation
DESCRIPTION
The LMP91300 is a complete analog front end (AFE)
optimized for use in industrial inductive proximity
sensors. The LMP91300 directly converts the R_P of
the external LC tank into a digital value.
Post manufacturing configuration and calibration is
fully supported. The temperature dependence of the
sensor is digitally compensated, using an external
temperature sensor. The LMP91300 provides
programmable
thresholds,
programmable
temperature compensation and programmable
oscillation frequency range. Due to its
programmability, the LMP91300 can be used with a
wide variety of external inductors and its detection
thresholds can be adjusted to the desired detection
distances.
An internal voltage regulator allows the device to
operate with a supply from 6.5V to 40V. The output
can be programmed to drive an external transistor in
either NPN or PNP mode.
Available in 4×5mm 24-pin WQFN and 2.05×2.67mm
20-pin DSBGA packages, the LMP91300 operates
from -40°C to +125°C.
FUNCTIONAL BLOCK DIAGRAM
OTP Memory
Voltage Regulator
INA
Oscillator
Direct R_P to
INB
Digital Converter
Digital Temp
Correction
Temp
Sensor
Comparator
LED
Drive
Driver
Serial
Interface
SENSE1+
SENSE2+
DRIVE
SENSE-
CBY
SENSE1+
SENSE2+/
SWIF RX
SWDRV
SENSE-
Figure 1. LMP91300 Block Diagram
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2013, Texas Instruments Incorporated