SL13A-ASWB datasheet(8/49 Pages) AMSCO

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SL13A – 8

ams Datasheet: 2014-May-06 [v1-01]

De tail ed De sc rip t ion

The SL13A is designed for use in smart active labels (SAL) and

smart passive labels. Smart active labels are defined as thin and

flexible labels that contain an integrated circuit and a power

source. SAL includes in its definition both “fully active” smart

labels, and semi-active smart labels, also known as

battery-assisted back-scattered passive labels, both of which

enable enhanced functionality and superior performance over

existing passive labels. The SL13A can be used in semi-active or

fully-passive smart labels. The IC includes sensor functionality

and logging of sensor data (see Figure 1 below).

The SL13A is operating at 13.56 MHz and is fully ISO 15693

compliant. The chip is supplied from a single-cell battery of

typically 1.5V. The on-chip temperature sensor and real-time

clock (RTC) accommodate temperature data logging.

Supply Arrangement

The SL13A is supplied from either the battery or through the

electromagnetic waves from a reader. The device is normally

supplied from the battery unless the battery voltage is too low

- in this case the device is powered from the RF field. This

functionality enables the read out of the log data even in case

the battery is exhausted.

The chip automatically detects whether a 1.5V or 3V battery is

connected and adapts accordingly. The voltage step-up

converter provides an input voltage for the voltage regulator,

which provides a regulated voltage of 2V nominal (internal

digital supply). The maximum current available from VEXT for

external circuitry is 4mA (only when RF field is present) and is

limited to 3.4V.

Analog Front End (AFE)

The analog front end is designed for 13.56 MHz according to

ISO 15693. The incoming data are demodulated from the

received ASK (Amplitude Shift Keying) signal which is 10 ~ 30%

or 100% modulated. Outgoing data are generated by the SL13A

load variation using Manchester coding with one or two

sub-carrier frequencies of 423.75 KHz (fc/32) or 484.28 KHz

(fc/28). The SL13A is compliant with the ISO 15693

recommendation for radio frequency power and signal

interface.

Detailed Description

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