Product Overview
The AK2B is an ultra-low jitter, fixed-frequency Surface Mount Device (SMD) clock oscillator designed for high-performance applications. It offers exceptional RMS jitter of 54fs typ (LVDS @ 156.25MHz) and is available in industry-standard frequencies ranging from 100MHz to 200MHz. With stability options up to 25ppm over industrial operating temperatures (-40C to +85C) and multiple supply voltage options (1.8V, 2.5V, 3.3V, 2.375V to 3.63V), the AK2B supports LVPECL, LVDS, and HCSL differential output logic. Its compact 2.5 x 2.0 x 1.0 mm footprint and quartz crystal technology make it suitable for demanding applications in data centers, networking, optical transceivers, and industrial systems.
Product Attributes
- Brand: ABRACON
- Certifications: ISO9001-2015 Certified, RoHS/RoHS II Compliant
- Technology: 3rd overtone, quartz crystal
- Jitter Performance: Ultra-Low Jitter
- Output Logic: LVPECL, LVDS, HCSL
- Footprint: Industry standard 2.5 x 2.0 x 1.0 mm
- MSL Level: N/A
Technical Specifications
| Parameter | Min. | Typ. | Max. | Unit | Notes |
|---|---|---|---|---|---|
| Frequency Range | 100 | 200 | MHz | Supply voltage and output logic dependent | |
| Standard Available Frequencies | 100.000, 122.880, 125.000, 148.500, 150.000, 155.520, 156.250, 200.000 MHz | Contact Abracon for availability of frequencies not listed | |||
| Supply Voltage (Vdd) | 2.97 | 3.3 | 3.63 | V | Option A |
| Supply Voltage (Vdd) | 2.375 | 2.5 | 2.625 | V | Option B |
| Supply Voltage (Vdd) | 1.71 | 1.8 | 1.89 | V | Option C (175 MHz only) |
| Supply Voltage (Vdd) | 2.375 | 3.63 | V | Option D | |
| Supply Current (Idd) - LVPECL | 52 | 65 | mA | @ 200MHz; @ Vdd=3.3V | |
| Supply Current (Idd) - LVDS | 25 | 35 | mA | @ 200MHz; @ Vdd=3.3V | |
| Supply Current (Idd) - HCSL | 32 | 40 | mA | @ 156.25MHz; @ Vdd=3.3V | |
| Operating Temperature Range | -20 | 70 | C | Option D | |
| Operating Temperature Range | -40 | 85 | C | Option F or Q | |
| Storage Temperature | -55 | 150 | C | ||
| Frequency Tolerance | -10 | 5 | 10 | ppm | [Note 2] |
| Frequency Stability over Operating Temperature Range | -15 | 10 | 15 | ppm | Option D (-20C to +70C) |
| Frequency Stability over Operating Temperature Range | -20 | 15 | 20 | ppm | Option Q (-40C to +85C) |
| Frequency Stability over Operating Temperature Range | -25 | 20 | 25 | ppm | Option F (-40C to +85C) |
| First Year Aging | -3 | 3 | ppm | At 25C | |
| All-Inclusive Frequency Accuracy (Total Stability) | -40 | 40 | ppm | Option D (-20C to +70C) | |
| All-Inclusive Frequency Accuracy (Total Stability) | -45 | 45 | ppm | Option Q (-40C to +85C) | |
| All-Inclusive Frequency Accuracy (Total Stability) | -50 | 50 | ppm | Option F (-40C to +85C) | |
| Rise (Tr) / Fall (Tf) Time - LVPECL | 0.15 | 0.4 | ns | RL=50 to Vdd2.0V on outputs | |
| Rise (Tr) / Fall (Tf) Time - LVDS | 0.15 | 0.3 | ns | RL=100 between outputs | |
| Rise (Tr) / Fall (Tf) Time - HCSL | 0.2 | 0.6 | ns | RL=50 to ground on each output | |
| Duty Cycle | 45 | 55 | % | Measured at 50% amplitude of single-ended signal | |
| Start-up Time | < 2 | 5 | ms | [Note 3] | |
| Differential Output High Voltage (VOH) - LVPECL | Vdd-1.085 | Vdd-0.95 | Vdd-0.86 | V | RL=50 to Vdd2.0V on each output |
| Output Low Voltage (VOL) - LVPECL | Vdd-1.81 | Vdd-1.7 | Vdd-1.62 | V | RL=50 to Vdd2.0V on each output |
| Differential Output High Voltage (VOH) - LVDS | 1.43 | 1.60 | V | RL=100 between outputs | |
| Output Low Voltage (VOL) - LVDS | 0.90 | 1.10 | V | RL=100 between outputs | |
| Differential Output High Voltage (VOH) - HCSL | 0.55 | 0.74 | 1.00 | V | RL=50 to ground on each output |
| Output Low Voltage (VOL) - HCSL | -0.15 | 0.00 | 0.15 | V | RL=50 to ground on each output |
| Output Voltage Swing (Vopp) | 0.400 | 0.494 | 0.450 | V | LVPECL, LVDS, HCSL |
| Output Enable & Disable Control | 0.7*(Vdd) | V | Output Enable or No Connect | ||
| Output Enable & Disable Control | 0.3*(Vdd) | V | Output Disable (High Impedance) | ||
| Output Enable Time | < 1 | 5.0 | ms | ||
| Output Disable Time | 200 | ns | |||
| Output Disable Current Consumption | 30 | A | OE 0.3V | ||
| RMS Phase Jitter (12kHz to 20MHz from Carrier) | See Table 1 below | Vdd, output logic type and carrier frequency dependent | |||
| Absolute Maximum Ratings - Supply Voltage | -0.3 | 4.5 | V | [Note 9] | |
| Absolute Maximum Ratings - Input Voltage | -0.3 | VDD+0.3 | V | [Note 9] | |
| Absolute Maximum Ratings - Output Voltage | -0.3 | VDD+0.3 | V | [Note 9] | |
| Absolute Maximum Ratings - Maximum Junction Operating Temperature | 150 | C | [Note 9] | ||
| Absolute Maximum Ratings - Ambient Operating Temperature Range | -40 | 85 | C | [Note 9] | |
| Absolute Maximum Ratings - Industrial Ambient Operating Temperature Range | -20 | 70 | C | [Note 9] | |
| Absolute Maximum Ratings - Reflow Temperature | 260 | C | See Reflow Profile [JEDEC J-STD-020] | ||
| Absolute Maximum Ratings - ESD Protection | 4kV HBM, 300V MM, 2kV CDM | [Note 9] | |||
Applications
- Optical Transceivers and Modules
- Data Centers, Storage, and Servers
- Networking switches and gateways
- 100G/200G/400G/800G Ethernet
- Fibre Channel/SONET/SDH/PCIe
- Industrial and FPGA applications
- Test & measurement
Part Number Example
AK2BDAF1-156.2500
Part Number Structure:
- (5): Output Frequency in MHz (e.g., "156.2500"=156.25MHz)
- (3): Stability over OTR: D: 15 ppm (-20C to +70C), Q: 20 ppm (-40C to +85C), F: 25 ppm (-40C to +85C)
- (1): Output Logic: P: LVPECL, D: LVDS, H: HCSL (*) (*) Only available for 175MHz
- (2): Vdd: A: 3.3V, B: 2.5V, C: 1.8V (*)(**), D: 2.375 ~ 3.63V (*) Excluding LVPECL (**) LVDS only available for 175MHz
- (4): OE Function: 1: OE Pin 1; Active High, 3: OE Pin 2; Active High
- (6): Packaging: Blank: Bulk, T: Tape & Reel (1,000 units), T3: Tape & Reel (3,000 units)
Note 10: Contact Abracon for non-standard part number configurations and/or requests with carrier frequency callouts up to 5 & 6 digit accuracy after the decimal.
Dimensions
2.5 x 2.0 x 1.0 mm
Packaging
- Blank: Bulk
- T: Tape & Reel (1,000 units/reel)
- T3: Tape & Reel (3,000 units/reel)
Contact Information
- Phone: 512-371-6159
- Fax: 512-351-8858
- Website: www.abracon.com
Disclaimer
Abracon LLCs products are COTS Commercial-Off-The-Shelf products; suitable for Commercial, Industrial and, where designated, Automotive Applications. Abracons products are not specifically designed for Military, Aviation, Aerospace, Life-dependent Medical applications or any application requiring high reliability where component failure could result in loss of life and/or property. For applications requiring high reliability and/or presenting an extreme operating environment, written consent and authorization from Abracon LLC is required. Please contact Abracon LLC for more information.
2411041626_ABRACON-AK2BPDF1-156-2500T_C21524004.pdf
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