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MAX2620

Maxim
Part Number MAX2620
Manufacturer Maxim
Description 10MHz to 1050MHz Integrated RF Oscillator
Published May 6, 2005
Detailed Description 19-1248; Rev 1; 5/98 KIT ATION EVALU E L B AVAILA 10MHz to 1050MHz Integrated RF Oscillator with Buffered Outputs ____...
Datasheet PDF File MAX2620 PDF File

MAX2620
MAX2620

Overview
19-1248; Rev 1; 5/98 KIT ATION EVALU E L B AVAILA 10MHz to 1050MHz Integrated RF Oscillator with Buffered Outputs ____________________________Features ♦ 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 (VCC = 3.
0V) ♦ Low-Current Shutdown Mode: 0.
1µA (typ) _________________General Description 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 functions 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 typically just 27mW in operating mode (VCC = 3.
0V), and drops to less than 0.
3µW in standby mode.
The MAX2620 operates from a single +2.
7V to +5.
25V supply.
MAX2620 ________________________Applications Analog Cellular Phones Digital Cellular Phones 900MHz Cordless Phones 900MHz ISM-Band Applications Land Mobile Radio Narrowband PCS (NPCS) _______________Ordering Information PART MAX2620EUA MAX2620E/D TEMP.
RANGE -40°C to +85°C -40°C to +85°C PIN-PACKAGE 8 µMAX Dice* *Dice are tested at TA = +25°C, DC parameters only.
Pin Configuration appears at end of data sheet.
____________________________________________________Typical Operating Circuit VCC 10Ω 1000pF 10nH 1000pF 1 VCC1 C17 1.
5pF VTUNE 1k D1 ALPHA SMV1204-34 CERAMIC RESONATOR L1 C6 C4 1pF 4 SHDN BIAS SUPPLY C3 2.
7pF C5 1.
5pF 2 TANK 3 FDBK OUT 8 1.
5pF VCC MAX2620 VCC2 7 GND 6 0.
1µF OUT TO MIXER VCC OUT 5 1000pF OUT TO SYNTHESIZER 51Ω SHDN 1000pF VCC 900MHz BAND OSCILLATOR _____...


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