TRF7900APWR datasheet(3/3 Pages) TI

Part #	TRF7900APWR

Description	Fully Integrated Analog Front-End Dual Receiver Base Unit for 27-MHz Wireless Mouse and Keyboard Systems

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Manufacturer	TI [Texas Instruments]

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RECOMMENDED OPERATING CONDITIONS

ELECTRICAL CHARACTERISTICS

TRF7900A

SWRS031 – OCTOBER 2005

over operating free-air temperature range (unless otherwise noted)

MIN

NOM

MAX

UNIT

VS– to VS+ Suppy voltage, analog

4.0

5.5

V

S = 5 V, TA = 25°C (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

IO

Output current

100

mA

RF Specifications

Precision of required external

50

ppm

12-MHz crystal

Channel spacing

50

kHz

26.995

MHz

27.045

MHz

27.095

MHz

27.145

MHz

Communication spacing

27.195

MHz

27.295

MHz

Optional channel

27.245

MHz

Optional channel

26.945

MHz

DC Differential

<100

k

Ω

Antenna Input Resistance

27 MHz

5

k

Ω

RO

Output resistance, Out_1 and Out_2

1.2

k

Ω

3

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