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ABX0237QC Datasheet(PDF) 1 Page - Abracon Corporation |
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ABX0237QC Datasheet(HTML) 1 Page - Abracon Corporation |
1 / 8 page ABX0235/37/38/39 750kHz – 800MHz Low Phase Noise Multiplier XO Universal Low Phase Noise IC’s 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 1 FEATURES • Selectable 750kHz to 800MHz range. • Low phase noise output (@ 10kHz frequency offset, -140dBc/Hz for 19.44MHz, -127dBc/Hz for 106.25MHz, -125dBc/Hz for 155.52MHz, - 110dBc/Hz for 622.08MHz). • CMOS (ABX0237), PECL (ABX0235 and ABX0238) or LVDS (ABX0239) output. • 12 to 25MHz crystal input. • No external load capacitor required. • Output Enable selector. • Selectable 1/16 to 32x frequency multiplier. • 3.3V operation. • Available in 16-Pin (TSSOP or 3x3mm QFN). DESCRIPTION The ABX0235 (PECL with inverted OE), ABX0237 (CMOS), ABX0238 (PECL), and ABX0239 (LVDS) are high performance and low phase noise XO IC chips. They provide phase noise performance as low as –125dBc at 1kHz offset (at 155MHz) and a typical RMS jitter of 4pS RMS ( at 155MHz ). They accept fundamental parallel resonant mode crystals from 12 to 25MHz. BLOCK DIAGRAM PIN CONFIGURATION (Top View) ^: Internal pull-up *: On 3x3 package, ABX0235/38 do not have SEL0 available: Pin 10 is VDD, pin 11 is GND. However, ABX0237/39 have SEL0 (pin 10), and pin 11 is VDD. See pin assignment table for details. OUTPUT ENABLE LOGICAL LEVELS Part # OE State 0 (Default) Output enabled ABX0238 1 Tri-state 0 Tri-state ABX0235 ABX0237 ABX0239 1 (Default) Output enabled OE input: Logical states defined by PECL levels for ABX0238 Logical states defined by CMOS levels for ABX0235/37/39 1 2 3 4 5 6 7 8 VDD 9 10 11 12 13 14 15 16 XIN XOUT SEL3^ SEL2^ OE GND GND SEL0^ SEL1^ GND CLKC VDD CLKT GND GND ABX023x GND VDD CLKT CLKC 12 3 4 12 11 10 9 13 14 15 16 8 7 6 5 SEL3^ XOUT SEL2^ OE XIN XOUT OE Q Q PLL by-pass SEL PLL (Phase Locked Loop) Oscillator Amplifier |
Similar Part No. - ABX0237QC |
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