MC33690DW Просмотр технического описания (PDF) - Motorola => Freescale

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Компоненты Описание

производитель

MC33690DW

Standalone Tag Reader Circuit

Motorola => Freescale 

Freescale SMeCm33i6c9o0nductor, Inc.

TAG READER

6V ≤ VSUP ≤ 16V, VSS = 0V, TJ = –40°C to +125°C, unless otherwise noted

Parameter

Symbol

Test Conditions

& Comments

Min

DEMODULATOR (pin RD)

2.0 Input Voltage Range

2.2 Input Modulation Frequency

2.3 Demodulator Sensitivity

2.31 Demodulator Sensitivity

VINRD

3

FMOD

0.5

VSENSE1

6.5V ≤ VSUP ≤ 16V

See figure 12 and note 1

-

6V ≤ VSUP < 6.5V

VSENSE2

See figure 12 and note 1

-

Typ

4

4

5

7

Max Unit Type

5

V

8

kHz

15 mV

30 mV

2.4 Demodulation Delay

See figure 12

tDemod

Configuration C

see note2 for configurations A

-

and B

7.5

10

µs

2.5 After Write Pulse Settling Time

tSettling1

Recovery Time after wake-up or reset

2.6 from clock stable to demodulator valid tSettling2

output

See note 3

-

394 400 µs

-

646 700 µs

DRIVERS (pins TD1, TD2)

3.5

Output Carrier Frequency to Crystal

Frequency Ratio

RFTD/

FXTAL

-

64

-

-

3.0 Turn on/off Delay

ton/off

-

-

250 ns

3.1 Driver1/2 Low Side Out. Resistance

RTDL

ILOAD = 150mA DC

-

2.4

4

Ω

3.2 Driver1/2 High Side Out. Resistance RTDH

ILOAD = -150mA DC

-

2.1

4

Ω

1. The sensitivity is measured in the following application conditions : IANTENNA = 50mA peak, VRD = 4V peak, CEXT = 10nF, square wave

modulation FMOD=FTD1/32.

2. Not including the delay due to the slew rate of the K output.

3. Clock stable condition implies VXTAL1 meets the specification (see page 15).

Figure 12 : Demodulator parameters definition

VRD

VSENSE

Demodulator

output (K or DOUT)

tDemod

© Motorola, Inc., 2002.

FMoOr TMOoRrOeLAInSfoEMrmICaOtNioDnUCOTnORTShPisROPDroUdCuTSct,

Go to: www16.freescale.com

revision 4.8, 5 February 2002

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