Pin Description

PIN

NAME

FUNCTION

1

XTAL1

Crystal Input 1

2, 7

AVDD

Positive Analog Supply Voltage. For +5V operation, pin 2 is the output of an on-chip +3.4V low-

dropout regulator, and should be bypassed to AGND with a 0.1µF capacitor as close as possible to

the pin. Pin 7 must be externally connected to the supply from pin 2, and bypassed to AGND with a

0.01µF capacitor as close as possible to the pin (see the Voltage Regulator section and the Typical

Application Circuit).

3

LNAIN

Low-Noise Amplifier Input. See the Low-Noise Amplifier section.

PHASE NOISE

vs. OFFSET FREQUENCY

OFFSET FREQUENCY (Hz)

1M

100k

10k

1k

100

-120

-100

-80

-60

-40

-20

0

-140

10

10M

PHASE NOISE

vs. OFFSET FREQUENCY

OFFSET FREQUENCY (Hz)

1M

100k

10k

1k

100

-120

-100

-80

-60

-40

-20

0

-140

10

10M

315MHz/434MHz ASK Superheterodyne

Receiver

6

_______________________________________________________________________________________

Typical Operating Characteristics (continued)

(

NORMALIZED IF GAIN

vs. IF FREQUENCY

IF FREQUENCY (MHz)

10

-25

-20

-15

-10

-5

0

5

-30

1100

vs. FREQUENCY

FREQUENCY (MHz)

470

440

380 410

260 290 320 350

230

-40

-30

-20

-10

0

10

20

30

40

50

-50

200

500

315MHz

-24.1dB

MAX7034 toc12

500MHz

200MHz

WITH INPUT

MATCHING

315MHz