AD9508
RECOMMENDED FOR NEW DESIGNS1.65 GHz Clock Fanout Buffer with Output Dividers and Delay Adjust
- Part Models
- 4
- 1ku List Price
- Starting From $5.53
Part Details
- 1.65 GHz differential clock inputs/outputs
- 10-bit programmable dividers, 1 to 1024, all integers
- Up to 4 differential outputs or 8 CMOS outputs
- Pin strapping capability for hardwired programming at power-up
- <115 fs rms broadband random jitter
- Additive output jitter: 41 fs rms typical (12 kHz to 20 MHz)
- Excellent output-to-output isolation
- Automatic synchronization of all outputs
- Single 2.5 V/3.3 V power supply
- Internal LDO (low drop-out) voltage regulator for enhanced power supply immunity
- Phase offset select for output-to-output coarse delay adjust
- 3 programmable output logic levels, LVDS, HSTL, and CMOS
- Serial control port (SPI/I2C) or pin-programmable mode
- Space-saving 24-lead LFCSP
- Download AD9508-EP data sheet (pdf)
- Extended temperature range: −55°C to +105°C
- Controlled manufacturing baseline
- One assembly/test site
- One fabrication site
- Enhanced product change notification
- Qualification data available on request
- V62/13626 DSCC Drawing Number
The AD9508 provides clock fanout capability in a design that emphasizes low jitter to maximize system performance. This device benefits applications like clocking data converters with demanding phase noise and low jitter requirements.
There are four independent differential clock outputs, each with various types of logic levels available. Available logic types include LVDS (1.65 GHz), HSTL (1.65 GHz), and 1.8 V CMOS (250 MHz). In 1.8 V CMOS output mode, the differential output becomes two CMOS single-ended signals. The CMOS outputs are 1.8 V logic levels, regardless of the operating supply voltage.
Each output has a programmable divider that can be bypassed or be set to divide by any integer up to 1024. In addition, the AD9508 supports a coarse output phase adjustment between the outputs.
The device can also be pin programmed for various fixed configurations at power-up without the need for SPI or I2C programming.
The AD9508 is available in a 24-lead LFCSP and operates from a either a single 2.5 V or 3.3 V supply. The temperature range is −40°C to +85°C.
Applications
- Low jitter, low phase noise clock distribution
- Clocking high speed ADCs, DACs, DDSs, DDCs, DUCs, MxFEs
- High performance wireless transceivers
- High performance instrumentation
- Broadband infrastructure
Documentation
Data Sheet 3
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD9508BCPZ | 24-Lead LFCSP (4mm x 5mm w/ EP) | ||
| AD9508BCPZ-REEL7 | 24-Lead LFCSP (4mm x 5mm w/ EP) | ||
| AD9508SCPZ-EP | 24-Lead LFCSP (4mm x 4mm w/ EP) | ||
| AD9508SCPZ-EP-R7 | 24-Lead LFCSP (4mm x 4mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 3, 2017 - 16_0230 Assembly Transfer of Select LFCSP Products to ASE Korea |
||
| AD9508BCPZ | PRODUCTION | |
| AD9508BCPZ-REEL7 | PRODUCTION | |
|
Sep 4, 2014 - 14_0183 AD9508 Specification Table changes |
||
| AD9508BCPZ | PRODUCTION | |
| AD9508BCPZ-REEL7 | PRODUCTION | |
| AD9508SCPZ-EP | PRODUCTION | |
| AD9508SCPZ-EP-R7 | PRODUCTION | |
|
May 11, 2014 - 13_0231 Assembly Transfer of Select 4x4 and 5x5mm LFCSP Products to STATS ChipPAC China. |
||
| AD9508BCPZ | PRODUCTION | |
| AD9508BCPZ-REEL7 | PRODUCTION | |
|
Feb 6, 2017 - 16_0225 Addition of ASE Korea as an Alternate Assembly Site for Select LFCSP Products. |
||
| AD9508SCPZ-EP | PRODUCTION | |
| AD9508SCPZ-EP-R7 | PRODUCTION | |
|
Jun 19, 2014 - 13_0247 Assembly Transfer of Select 3x2, 4x4, 5x5, 6x6 and 7x7 mm LFCSP Pre-plated Leadframe Products to STATS ChipPAC China |
||
| AD9508SCPZ-EP | PRODUCTION | |
| AD9508SCPZ-EP-R7 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Device Drivers 2
Evaluation Software 1
JESD204 Interface Framework
Integrated JESD204 software framework for rapid system-level development and optimization
Tools & Simulations
IBIS Model 1
Evaluation Kits
AD9508 Evaluation Board