AS3909 データシートの表示（PDF） - austriamicrosystems AG
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AS3909 Datasheet PDF : 77 Pages
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Figure 1:
Standard Products
Part Number
AS3909
AS3910
AAT
No
Yes
Trim Pins
NC
Connect to external trim caps as mentioned in Calibrate Antenna
Resonance
Figure 2:
Added Value of Using AS3909/10
Key Benefits & Features
The benefits and features of this device are listed below:
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
Note(s) and/or Footnote(s):
1. Only available in AS3910.
AS3909/AS3910 – 2
ams Datasheet, Confidential: 2013-Oct [3-02]
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