Rainbow-electronics MAX7057 Manual de usuario descargar pdf (Pagina 2)

MAX7057

300MHz to 450MHz Frequency-Programmable

ASK/FSK Transmitter

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(

Typical Application Circuit

, 50Ω system impedance, tuned for 315MHz to 433.92MHz operation, AVDD = DVDD = PAVDD = +2.1V to

+3.6V, f

= 300MHz to 450MHz, f

CRYSTAL

= 16MHz, T

= -40°C to +125°C, unless otherwise noted. Typical values are at AVDD =

DVDD = PAVDD = +2.7V, T

= +25°C, unless otherwise noted. All min and max values are 100% tested at T

= +125°C, and guaran-

teed by design and characterization over temperature, unless otherwise noted.)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

Supply Voltage, PAVDD, AVDD, DVDD to AGND,

DGND, PAGND ...................................................-0.3V to +4.0V

All Other Pins..................................._GND - 0.3V to _V

+ 0.3V

Continuous Power Dissipation (T

= +70°C)

16-Pin SO (derate 8.7mW/°C above +70°C)...............695.7mW

Operating Temperature .....................................-40°C to +125°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage V

PAVDD, AVDD, and DVDD connected to

power supply, V

2.1 2.7 3.6 V

= 315MHz 3.9 6.5

PA off, V

DIN

at 0%

duty cycle (ASK)

= 433.92MHz 4.5 7.5

= 315MHz 8.1 15.1

D IN

at 50% d uty cycl e

( AS K) ( N otes 1, 2, 3)

= 433.92MHz 8.5 15.0

= 315MHz 12.2 23.7

Supply Current I

DIN

at 100% duty

cycle (FSK) (Note 1)

= 433.92MHz 12.4 22.4

= + 25°C ( N ote 3) 0.8

< + 85°C ( N ote 3) 1 6.4Standby Current I

STDBY

ENABLE

< V

< +125°C 6.2 20.1

μA

DIGITAL I/O

Input High Threshold V

0.9 x

Input Low Threshold V

0.1 x

Input Pulldown Sink Current 13 μA

Input Pullup Source Current 9μA

Output-Voltage High V

SINK

= 500μA (GPO)

0.37

Output-Voltage Low V

SOURCE

= 500μA (GPO) 0.36 V

1 2 3 4 5 6 7 ... 18 19

ASK/FSK Transmitter 1

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Rainbow-electronics MAX7057 Manual de usuario Pagina 2

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