This website uses cookies. By using this site, you consent to the use of cookies. For more information, please take a look at our Privacy Policy.

Images are for reference only,

See Technical Specifications

LM1815N/NOPB +BOM

Adaptive Variable Reluctance Sensor Amplifier

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

LM1815N/NOPB
Datasheet:

LM1815N/NOPB Datasheet (PDF)
Number Of Input Channels:

1
Features:

Variable Reluctance Sensor
Operating Temperature Range (°C):

-40 to 125
Vs (min) (V):

2
EDA/CAD Models:

Request Free CAD Models for LM1815N/NOPB

LM1815N/NOPB General Description

The LM1815 is an adaptive sense amplifier and default gating circuit for motor control applications. The sense amplifier provides a one-shot pulse output whose leading edge coincides with the negative-going zero crossing of a ground referenced input signal such as from a variable reluctance magnetic pick-up coil.

In normal operation, this timing reference signal is processed (delayed) externally and returned to the LM1815. A Logic input is then able to select either the timing reference or the processed signal for transmission to the output driver stage.

The adaptive sense amplifier operates with a positive-going threshold which is derived by peak detecting the incoming signal and dividing this down. Thus the input hysteresis varies with input signal amplitude. This enables the circuit to sense in situations where the high speed noise is greater than the low speed signal amplitude. Minimum input signal is 150mV_P-P.

Key Features

Adaptive Hysteresis
Single Supply Operation
Ground Referenced Input
True Zero Crossing Timing Reference
Operates from 2V to 12V Supply Voltage
Handles Inputs from 100 mV_P-P to over 120V_P-P with External Resistor
CMOS Compatible Logic

All trademarks are the property of their respective owners.

Specifications

Number of input channels	1	Features	Variable Reluctance Sensor
Operating temperature range (°C)	-40 to 125	Vs (min) (V)	2
Vs (max) (V)	12	Rating	Catalog
feature-sensor-type	Variable Reluctance	feature-adc-resolution-bit
feature-interface-type		feature-process-technology
feature-input-type	Logic	feature-output-type	Logic
feature-minimum-operating-supply-voltage-v	2.5	feature-maximum-operating-supply-voltage-v	12
feature-typical-operating-supply-voltage-v	10	feature-packaging	Tube
feature-rad-hard		feature-pin-count	14
feature-cecc-qualified	No	feature-esd-protection	Yes
feature-military	No	feature-aec-qualified	No
feature-aec-qualified-number		feature-auto-motive	No
feature-p-pap	No	feature-eccn-code	EAR99
feature-svhc	No	feature-svhc-exceeds-threshold	No