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TO-900

Product catalog summary

Specifications
The TO-900 Series includes models TO-950, TO-930, TO-951, TO-952, TO-953, TO-931, TO-932, and TO-933. These models are SMD TCXOs designed to meet frequency stability requirements of Telcordia GR-253-Core SMC and ITU-T G.813 Option 2. They operate with power supply voltages of +5.0 V ± 5% or +3.3 V ± 5%, covering a frequency range of 10.0 MHz to 52.0 MHz. Frequency tolerance at +25°C is less than +1.0 ppm, with stability options of ±1.0 ppm, ±2.0 ppm, and ±3.0 ppm. Temperature range options include -10°C to +60°C, -20°C to +70°C, and -40°C to +85°C. Frequency stability against supply voltage and load changes is less than +0.1 ppm and +0.05 ppm, respectively. Aging is less than +1.0 ppm per year and less than +5.0 ppm after 10 years, with total stability over all causes including aging being less than ±10 ppm. Frequency control options include fixed frequency and tuning range greater than +10 ppm via external control voltage.

Output and Performance
The output signal is available in HCMOS and LVHCMOS formats, with voltage swings of VOL < 0.5 V / VOH > 4.5 V and VOL < 0.33 V / VOH > 2.97 V, respectively. The load is 1 kOhm // 15 pF, with a duty cycle of 40% / 60% and rise & fall time of less than 8 ns. The phase noise at various offsets (10 Hz, 100 Hz, 1 kHz, 10 kHz) is -90 dBc, -125 dBc, -140 dBc, and -145 dBc, respectively.

Environmental Conditions
The product adheres to KVG Product Qualification Procedure AA-QM-200.

Marking and Soldering
Markings include the manufacturer's name, date code, specification, and center frequency. The reflow soldering profile is specified, with a maximum reflow temperature of 260°C.

Case and Pin Configuration
The case style is BF 157-5.5D. Pin configuration includes: 1. CV-in (VC) or N.C., 2. Tristate (E/D) Control Input, 3. GND, Case, 4. RF Output, 5. N.C., 6. Supply Voltage VS.

RoHS Compliance
The product is RoHS-compliant with a moisture sensitivity level of 2 and termination finish of AuNi.

Catalog excerpts

RoHS-Compliant Product Subject to technical modification

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RoHS-Compliant Product Output Enable Output Disable Output E/D (Tri-State) function Control input Pin 2 Logic HIGH or N.C: Control input Pin 2 Logic LOW: According to KVG Product Qualification Procedure AA-QM-200 Manufacturer's name, date code (week/year); Specification; Center frequency TO-900.DOC Subject to technical modification

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