Datasheet > MAX2620_02

MAX2620_02

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
美信 - MAXIM		振荡器
页数	文件大小	规格书
11页	235K
描述
10MHz to 1050MHz Integrated RF Oscillator with Buffered Outputs

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MAX2620_02 数据手册

19-1248; Rev 2; 2/02

10MHz to 1050MHz Integrated

RF Oscillator with Buffered Outputs

_________________General Description

____________________________Features

The MAX2620 combines a low-noise oscillator with two

output buffers in a low-cost, plastic surface-mount,

ultra-small µMAX package. This device integrates func-

tions typically achieved with discrete components. The

oscillator exhibits low-phase noise when properly

mated with an external varactor-tuned resonant tank

circuit. Two buffered outputs are provided for driving

mixers or prescalers. The buffers provide load isolation

to the oscillator and prevent frequency pulling due to

load-impedance changes. Power consumption is typi-

♦ Low-Phase-Noise Oscillator: -110dBc/Hz

(25kHz offset from carrier) Attainable

♦ Operates from Single +2.7V to +5.25V Supply

♦ Low-Cost Silicon Bipolar Design

♦ Two Output Buffers Provide Load Isolation

♦ Insensitive to Supply Variations

♦ Low, 27mW Power Consumption (V

= 3.0V)

♦ Low-Current Shutdown Mode: 0.1µA (typ)

cally just 27mW in operating mode (V

= 3.0V), and

drops to less than 0.3µW in standby mode. The MAX2620

operates from a single +2.7V to +5.25V supply.

________________________Applications

_______________Ordering Information

Analog Cellular Phones

Digital Cellular Phones

900MHz Cordless Phones

900MHz ISM-Band Applications

Land Mobile Radio

PART

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

8 µMAX

MAX2620EUA

MAX2620E/D

Dice*

*Dice are tested at T = +25°C, DC parameters only.

Pin Configuration appears at end of data sheet.

Narrowband PCS (NPCS)

____________________________________________________Typical Operating Circuit

10Ω

1000pF

10nH

1000pF

1.5pF

OUT

OUT TO MIXER

1.5pF

C17

MAX2620

1.5pF

TANK

FDBK

TUNE

1kΩ

0.1µF

51Ω

2.7pF

GND

OUT

CERAMIC

RESONATOR

1000pF

ALPHA

SMV1204-34

1pF

SHDN

BIAS

SUPPLY

OUT TO SYNTHESIZER

SHDN

1000pF

900MHz BAND OSCILLATOR

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

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