AD9523-1 Low Jitter Clock Generator with 14 LVPECL/LVDS/HSTL/29 LVCMOS Outputs
The AD9523-1 provides a low power, multi-output, clock distribution function with low jitter performance, along with an on-chip PLL and VCO with two VCO dividers. The on-chip VCO tunes from 2.94 GHz to 3.1 GHz.
Applications
The AD9523-1 is designed to support the clock requirements for long term evolution (LTE) and multicarrier GSM base station designs. It relies on an external VCXO to provide the reference jitter cleanup to achieve the restrictive low phase noise requirements necessary for acceptable data converter SNR performance.
The input receivers, oscillator, and zero delay receiver provide both single-ended and differential operation. When connected to a recovered system reference clock and a VCXO, the device generates 14 low noise outputs with a range of 1 MHz to 1 GHz, and one dedicated buffered output from the input PLL (PLL1). The frequency and phase of one clock output relative to another clock output can be varied by means of a divider phase select function that serves as a jitter-free, coarse timing adjustment in increments that are equal to half the period of the signal coming out of the VCO.
An in-package EEPROM can be programmed through the serial interface to store user-defined register settings for power-up and chip reset.
Features and Benefits- Output frequency: <1 MHz to 1 GHz
- Start-up frequency accuracy: <±100 ppm (determined by VCXO reference accuracy)
- Zero delay operation
Input-to-output edge timing: <150 ps - Dual VCO dividers
- 14 outputs: configurable LVPECL, LVDS, HSTL, and LVCMOS
- 14 dedicated output dividers with jitter-free adjustable delay
- Adjustable delay: 63 resolution steps of ½ period of VCO output divider
- Output-to-output skew: <50 ps
- Duty cycle correction for odd divider settings
- Automatic synchronization of all outputs on power-up
- Absolute output jitter: <150 fs at 122.88 MHz Integration range: 12 kHz to 20 MHz
- See data sheet for additional features
| AD9523/AD9523-1 IBIS Model
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Data Sheets
Application Notes
User Guides
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| AD9523-1BCPZ Production | 72 ld LFCSP (10x10mm, 6.0mm exposed pad) | OTH 168 | -40 to 85C | 10.2 | 8.67 | Y |
| AD9523-1BCPZ-REEL7 Production | 72 ld LFCSP (10x10mm, 6.0mm exposed pad) | REEL 400 | -40 to 85C | 0 | 8.67 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
|---|
| AD9523-1/PCBZ | Evaluation Board | 190 | Y |
| AD-FMCDAQ2-EBZ | AD-FMCDAQ2-EBZ Wideband RF data acquisition and signal synthesis module | 1495 | Y |
Reference Materials
