ABV0238OCL

A BV0235/-37/-38/-39 7 50kHz – 800MHz Low Phase Noise Multiplier VCXO U niversal Low Phase Noise IC’s F EATURES • • • • • • • • • • S electable 750kHz to 800MHz range. L ow phase noise output (@ 10kHz frequency offset, -142dBc/Hz for 19.44MHz, -125dBc/Hz for 155.52MHz, -115dBc/Hz for 622.08MHz). C MOS (ABV0237), PECL (ABV0235 and ABV0238) or LVDS (ABV0239) output. 1 2 to 25MHz crystal input. N o external load capacitor or varicap required. O utput Enable selector. W ide pull range (+/-200 ppm) S electable 1/16 to 32x frequency multiplier. 3 .3V operation. A vailable in 16-Pin (TSSOP or 3x3mm QFN). P IN CONFIGURATION ( Top View) VDD XIN XOUT SEL3^ SEL2^ OE VCON GND 1 2 1 6 1 5 1 4 1 3 1 2 1 1 1 0 9 SEL0^ SEL1^ GND CLKC VDD CLKT GND GND ABV023x SEL0^ / VDD* 10 3 4 5 6 7 8 T he ABV0235 (PECL with inverted OE), ABV0237 (CMOS), ABV0238 (PECL), and ABV0239 (LVDS) are high performance and low phase noise VCXO IC chips. They provide phase noise performance as low as –125dBc at 10kHz offset (at 155MHz), by multiplying the input crystal frequency up to 32x. The wide pull range (+/- 200 ppm) and very low jitter make them ideal for a wide range of applications, including SONET/SDH and FEC. They accept fundamental parallel resonant mode crystals from 12 to 25MHz. ^: *: XOUT SEL3^ SEL2^ OE 12 13 14 15 16 11 9 8 7 6 5 SEL1^ D ESCRIPTION XIN VDD / GND* GND CLKC VDD CLKT A023x 1 2 3 4 VCON GND GND B LOCK DIAGRAM SEL OE Vi n X+ XOscillator Amplifier w/ integrated varicaps PLL (Phase Locked Loop) Internal pull-up On 3x3 package, ABV0235/-38 do not have SEL0 available: Pin 10 is VDD, pin 11 is GND. However, ABV0237/-39 have SEL0 (pin 10), and pin11 is VDD. See pin assignment table for details. O UTPUT ENABLE LOGICAL LEVELS P art # A BV0238 A BV0235 ABV0237 ABV0239 OE 0 ( Default) 1 0 1 ( Default) T ri-state T ri-state GND S tate Output enabled Q Q Output enabled PLL by-pass ABV023x O E input: Logical states defined by PECL levels for ABV0238 Logical states defined by CMOS levels for ABV0237/-39 3 0332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 w ww.Abracon.com 0 3/21/05 Page 1 A BV0235/-37/-38/-39 7 50kHz – 800MHz Low Phase Noise Multiplier VCXO U niversal Low Phase Noise IC’s F REQUENCY SELECTION TABLE S EL3 0 0 0 1 1 1 1 1 1 1 S EL2 0 1 1 0 0 0 1 1 1 1 SEL1 1 1 1 0 1 1 0 0 1 1 SEL0 1 0 1 1 0 1 0 1 0 1 Selected Multiplier F in x 32 F in / 8 F in x 2 F in / 2 F in / 16 F in x 4 F in / 4 F in x 8 F in x 16 N o multiplication N ote: S EL0 is not available (always “1”) for ABV0235 and ABV0238 in 3x3mm package P IN DESCRIPTIONS ABV0235 and ABV0238 (see next page of ABV0237/39) N ame X IN X OUT OE V CON G ND C LKT C LKC S EL0 S EL1 S EL2 S EL3 V DD TSSOP Pin number 2 3 6 7 8,9,10,14 11 13 16 15 5 4 1, 12 3x3mm QFN Pin number 12 13 16 1 2,3,4,8,11 5 7 Not available 9 15 14 6,10 Type I I I I P O O I I I I P Description Crystal input. See Crystal Specification on page 4. Crystal output. See Crystal Specification on page 4. Output enable pin (see OE logic state table on page 1). Voltage Control input. Ground. True output PECL Complementary output PECL. Multiplier selector pins. These pins have an internal pull-up that will default SEL to ‘1’ when not connected to GND. +3.3V power supply. 3 0332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 w ww.Abracon.com 0 3/21/05 Page 2 A BV0235/-37/-38/-39 7 50kHz – 800MHz Low Phase Noise Multiplier VCXO U niversal Low Phase Noise IC’s P IN DESCRIPTIONS ABV0237/-39 (see previous page of ABV0235/38) N ame X IN X OUT OE V CON G ND C LKT C LKC S EL0 S EL1 S EL2 S EL3 V DD TSSOP Pin number 2 3 6 7 8,9,10,14 11 13 16 15 5 4 1, 12 3x3mm QFN Pin number 12 13 16 1 2,3,4,8 5 7 10 9 15 14 6,11 Type I I I I P O O I I I I P Description Crystal input. See Crystal Specification on page 4. Crystal output. See Crystal Specification on page 4. Output enable pin (see OE logic state table on page 1). Voltage Control input. Ground. True output LVDS (ABV0239) (N/C for ABV0237) Complementary output LVDS (ABV0239) (CMOS out for ABV0237). Multiplier selector pins. These pins have an internal pull-up that will default SEL to ‘1’ when not connected to GND. +3.3V power supply. E LECTRICAL SPECIFICATIONS 1 . Absolute Maximum Ratings P ARAMETERS S upply Voltage I nput Voltage, dc O utput Voltage, dc S torage Temperature A mbient Operating Temperature* J unction Temperature L ead Temperature (soldering, 10s) E SD Protection, Human Body Model SYMBOL V DD VI VO TS TA TJ MIN. - 0.5 - 0.5 - 65 - 40 MAX. 4 .6 V DD +0.5 V DD +0.5 150 85 1 25 260 2 UNITS V V V °C °C °C °C kV E xposure of the device under conditions beyond the limits specified by Maximum Ratings for extended periods may cause permanent damage to the device and affect product reliability. These conditions represent a stress rating only, and functional operations of the device at these or any other conditions above the operational limits noted in this specification is not implied. * N ote : Operating Temperature is guaranteed by design for all parts (COMMERCIAL and INDUSTRIAL), but tested for COMMERCIAL grade only. 3 0332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 w ww.Abracon.com 0 3/21/05 Page 3 A BV0235/-37/-38/-39 7 50kHz – 800MHz Low Phase Noise Multiplier VCXO U niversal Low Phase Noise IC’s 2 . Crystal Specifications P ARAMETERS C rystal Resonator Frequency C rystal Loading Rating C rystal Pullability R ecommended ESR SYMBOL F XIN C L (xtal) C 0 /C 1 (xtal) RE CONDITIONS P arallel Fundamental Mode A t VCON = 1.65V A T cut A T cut MIN. 12 TYP. 9.5 MAX. 25 250 30 UNITS MHz pF Ω N ote : Crystal Loading rating: 9.5pF is the loading the crystal sees from the VCXO chip at VCON = 1.65V. It is assumed that the crystal will be at nominal frequency at this load. If the crystal requires more load to be at nominal frequency, the additional load must be added externally. This however may reduce the pull range. 3 . Voltage Control Crystal Oscillator P ARAMETERS V CXO Stabilization Time * V CXO Tuning Range C LK output pullability V CXO Tuning Characteristic P ull range linearity V CON pin input impedance V CON modulation BW SYMBOL T VCXOSTB CONDITIONS F rom power valid F XIN = 1 2 – 25MHz; XTAL C 0 /C 1 < 2 50 0V ≤ V CON ≤ 3 .3V VCON=1.65V, ± 1.65V MIN. TYP. MAX. 10 UNITS ms ppm ppm ppm/V % kΩ kHz 500 ± 200 1 50 10 2 000 25 0 V ≤ V CON ≤ 3 .3V, -3dB N ote: P arameters denoted with an asterisk (*) represent nominal characterization data and are not production tested to any specific limits. 4 . General Electrical Specifications P ARAMETERS S upply Current, Dynamic (with Loaded Outputs) O perating Voltage O utput Clock Duty Cycle S hort Circuit Current SYMBOL I DD V DD CONDITIONS P ECL/LVDS/CMOS F out