AS3911 datasheet(8/149 Pages) AMSCO

Part #	AS3911

Description	NFC Initiator / HF Reader IC

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Manufacturer	AMSCO [ams AG]

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AS3911 – 8

ams Datasheet, Confidential: 2013-Oct [2-03]

E l ec t r i c al C h a r ac teri sti c s

All limits are guaranteed. The parameters with min and max

values are guaranteed with production tests or SQC (Statistical

Quality Control) methods.

Operating Conditions

All defined tolerances for external components in this

specification need to be assured over the whole operation

condition range and also over lifetime.

Figure 6:

Operating Conditions

DC/AC Characteristics for Digital Inputs and

Outputs

CMOS Inputs:

Valid for input pins /SS, MOSI, and SCLK

Figure 7:

CMOS Inputs

Symbol

Parameter

Min

Max

Unit

Comments

VDD

Positive supply voltage

2.4

5.5

V

In case power supply is

lower than 2.6V, PSSR

cannot be improved using

internal regulators

(minimum regulated

voltage is 2.4V)

VDD_IO

Peripheral

communication supply

voltage

1.65

5.5

V

VSS

Negative supply voltage

0

V

TJUN

Junction temperature

-40

125

°C

VRFI_A

RFI input amplitude

150 milli

3

Vpp

Minimum RFI input signal

definition is meant for NFC

receive mode. In HF reader

mode and NFC transmit

mode, the recommended

signal level is 2.5Vpp

Symbol

Parameter

Min

Max

Unit

VIH

High level input voltage

0.7 * VDD_IO

V

VIL

Low level input voltage

0.3 * VDD_IO

V

ILEAK

Input leakage current

1

μA

Electrical Characteristics

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AS3911 Datasheet(PDF) 8 Page - ams AG

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