AS3909 datasheet(2/77 Pages) AMSCO

2 / 77 page

AS3909/AS3910 – 2

ams Datasheet, Confidential: 2013-Oct [3-02]

Figure 1:

Standard Products

Key Benefits & Features

The benefits and features of this device are listed below:

Figure 2:

Added Value of Using AS3909/10

Note(s) and/or Footnote(s):

1. Only available in AS3910.

Part Number

AAT

Trim Pins

AS3909

AS3910

Yes

Connect to external trim caps as mentioned in Calibrate Antenna

Resonance

Benefits

Features

Stable Modulation Index

Close loop adjustment of ASK modulation for accurate control

of modulation depth in case of ISO-14443B protocol

Enabling Ultra Low Power Applications

Low power (3.5μA) NFC target mode

No communication holes

AM/PM demodulator

Measuring signal strength on RFI pins

Accurate RF envelope measurement (8 bit A/D)

Enables various antenna configurations

High output power at 3.3V power supply:

• Up to 700mW in case regulator is externally shorted

• Up to 500mW in case differential output and antenna

trimming is used

• Up to 125mW in case of single ended output and antenna

trimming is used

Increases EMD immunity

Squelch feature which performs gain reduction to compensate

for noise generated by transponder processing

Enable tuning of the Antenna LC Tank

Automatic Antenna tuning (AAT) (1)

For support of other standards and custom

protocols (ISO-15693, FeliCa, ...)

Transparent mode

Enabling Inductive wakeup in combination

with MCU

Amplitude and phase measurement

Supporting 13.56 MHz and 27.12MHz Quartz oscillator with fast

start-up

Supply voltage range from 2.4V to 3.6V

Wide temperature range: -40ºC to 85ºC

32-pin QFN (5x5mm) for AS3910 and 32-pin TQFN (5x5mm) for

AS3909

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