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MAX2620EVKIT Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX2620EVKIT Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 4 page ![]() _________________________Quick Start The MAX2620 EV kit is fully assembled and factory test- ed. Follow the instructions in the Connections and Setup section. __________Test Equipment Required • Power supplies. Low-noise power supplies are rec- ommended for oscillator-noise measurements. This is especially important for the tuning voltage sup- plied to the varactor (VCONT). Noise or ripple on the tuning voltage frequency-modulates the oscilla- tor and causes spectral spreading. Batteries can be used in place of power supplies, if necessary. —DC supply capable of supplying +2.7V to +5.25V at 20mA. Alternatively, use two or three 1.5V AA batteries. —DC supply capable of supplying 0V to +3V, con- tinuously variable, for VCONT. Alternatively, use two or three 1.5V batteries with a resistive volt- age divider or potentiometer. ________________General Description The MAX2620 evaluation kit (EV kit) simplifies evalua- tion of the MAX2620 integrated oscillator with buffered outputs. It includes a varactor-based tank circuit that allows the VCO to tune across an approximately 30MHz band in the 900MHz frequency range. Outputs utilize 50 Ω SMA connectors. The EV kit has a test port that facilitates complete characterization of the MAX2620 tank port, enabling resonators to be designed for fre- quency ranges other than that supplied with the EV kit. ____________________________Features o Complete, Tunable VCO Test Board with Tank Circuit o Tuning in 900MHz Frequency Range o Low Phase Noise (-110dBc/Hz typical at 25kHz offset from carrier) o Operates from Single +2.7V to +5.25V Supply o Two Output Buffers with 50 Ω SMA Connectors o Low-Power Shutdown Mode o Test Port for Oscillator Tank Port Characterization o Fully Assembled and Tested MAX2620 Evaluation Kit ________________________________________________________________ Maxim Integrated Products 1 QTY DESCRIPTION C1, C7–C10, C12 6 C2, C11, C14 0 C3 1 2.7pF, 10% ceramic capacitor C4, C6 2 C5, C13, C17 3 1.5pF, 10% ceramic capacitors C15 1 D1 1 JU1, VCC, GND 3 L1 1 Ceramic coaxial resonator Trans-Tech SR8800LPQ1357BY L4 0 Not installed L3 1 10nH inductor Coilcraft 0603HS-10NTJBC OUT, OUT, TEST PORT 3 SMA connectors (edge mount) R1, R3 2 10 Ω, 5% resistors 1pF, 10% ceramic capacitors Not installed 1000pF, 10% ceramic capacitors SUPPLIER PHONE FAX Alpha Industries (617) 935-5150 (617) 824-4579 ______________Component Suppliers DESIGNATION 10µF, ±10%, 25V tantalum capacitor Sprague 293D106X9025D2 Varactor diode Alpha Industries SMV1204-34 2-pin headers ____________________Component List ______________Ordering Information Coilcraft (847) 639-6400 (847) 639-1469 Sprague (603) 224-1961 (603) 224-1430 Trans-Tech (301) 695-9400 (301) 695-7065 PART MAX2620EVKIT -40°C to +85°C TEMP. RANGE BOARD TYPE Surface Mount For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 408-737-7600 ext. 3468. R2 1 1k Ω, 5% resistor R4 0 Not installed R5 1 51 Ω, 5% resistor SHDN 1 3-pin header U1 1 MAX2620EUA VCONT 1 SMA connector (PC mount) None 1 Shunt None 1 MAX2620 circuit board None 1 MAX2620 data sheet NOTE: All capacitors and resistors are size 0805 unless other- wise noted. 19-1248; Rev 1; 5/98 |
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