RFHCS362F-I/SO View Datasheet(PDF) - Microchip Technology

Part Name

Description

MFG CO.

RFHCS362F-I/SO

KEELOQ® Code Hopping Encoder with UHF ASK/FSK Transmitter

Microchip Technology 

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rfHCS362G/362F

TABLE 10-6: TRANSMITTER DC CHARACTERISTICS*

DC CHARACTERISTICS

Standard Operating Conditions (unless otherwise stated)

Operating Temperature -40°C ≤TA ≤+85°C

Param

No.

Sym

Characteristic

Min

Typ†

Max

Units

Conditions

VDDRF

Supply Voltage

2.2

—

5.5

V

IPDRF

Power-Down Current

—

0.05

0.1

μA

IDDRF

Supply Current

4.8

—

11.5

mA

VILRF

Input Low Voltage

-0.3

—

0.3 VSSRF

V

VIHRF

Input High Voltage 0.7 VSSRF —

VSSRF + 0.3

V

IILRF

Input Leakage Current

-1

—

1

μA

RFEN = 0

Note 1

Note 2

Note 2

*

†

Note 1:

Note 2:

These parameters are characterized but not tested.

Data in “Typ” column is at 3V, 25°C unless otherwise stated. These parameters are for design guidance only

and are not tested.

Depends on output power selection. See Table 6-6.

Applies to RFEN pin.

TABLE 10-7: TRANSMITTER AC CHARACTERISTICS*

AC CHARACTERISTICS

Standard Operating Conditions (unless otherwise stated)

Operating Temperature -40°C ≤TA ≤+85°C

Param

No.

Sym

Characteristic

Min

Typ†

Max

Units

Conditions

bit *

†

Note 1:

Note 2:

Note 3:

fxtal

Crystal Frequency

9.69

—

15

MHz

ftransmit

Transmit Frequency

310

—

440

MHz

fCLKOUT CLKOUT Frequency

2.42

—

3.75

MHz

Po

Transmit Output Power -12

—

+2

dBm

fASK

ASK Data Rate

—

—

40

kbps

Fixed, set by fxtal

Fixed, set by fxtal

See Table 6-6

fFSK

FSK Data Rate

—

—

20

kbps

Note 3

PREF

Reference Spurs (1)

—

-44

—

dBm

PCLK

Clock Spurs (1)

—

-44

—

dBm

ftransmit ± fxtal

ftransmit ± fCLKOUT

PHARM

Harmonic Content

—

-40

—

dBm

2ftransmit, 3ftransmit,

4ftransmit,...

POFF Spurious Output Signal

—

-60

—

dBm

Vps ≤0.1V

PN

KVCO

Phase Noise

VCO Gain

—

-87

—

dBc/Hz

ftransmit ± 500 kHz

—

100

—

MHz/V

ICP

Charge Pump Current

—

±260

—

μA

VCLKOUT Clock Voltage Swing

—

2

—

VPP

ton

Start-up Time

—

0.9

—

ms

Cload = 5 pF

Note 2

These parameters are characterized but not tested.

Data in “Typ” column is at 3V, 25°C unless otherwise stated. These parameters are for design guidance only

and are not tested.

Values dependent on PLL loop filter values.

ton equals crystal oscillator and PLL start-up time.

Max FSK data rate requires crystal with appropriate motional parameters. See Section 6.3.

© 2011 Microchip Technology Inc.

DS41189B-page 47

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