Analog Devices AD9518-1ABCPZ-RL7, Clock Generator & Fanout Distribution, integrated PLL, 2.65 GHz max frequency, 1:6 LVPECL outputs, 48-LFCSP-VQ (7x7), -40°C to 85°C.
| Parameter | Value |
|---|---|
| Type | Clock Generator, Fanout Distribution |
| Mounting | Surface Mount |
| Voltage | 3.135V ~ 3.465V |
| Frequency | 2.65GHz |
| Operating temperature | -40°C ~ 85°C |
| PLL | Yes |
| Input | CMOS, LVDS, LVPECL |
| Output | LVPECL |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Case | 48-VFQFN Exposed Pad, CSP |
| Divider (Multiplier) | Yes/No |
| Number of circuits | 1 |
| Ratio - Input:Output | 1:6 |
| Differential - Input:Output | Yes/Yes |
The AD9518-1ABCPZ-RL7 integrates a PLL and VCO to generate a clean clock up to 2.65 GHz, then fans it out to six LVPECL outputs. That means one chip replaces a separate synthesizer and a distribution buffer — a single BOM line for the high-speed clock tree in a base station or test instrument. Input accepts CMOS, LVDS, or LVPECL references, so it can lock to a TCXO, a crystal oscillator, or a backplane clock without level translation.
The maximum output frequency is 2.65 GHz, specified at the LVPECL outputs. That covers the reference clock for most high-speed ADCs, DACs, and FPGA transceivers up to 10 Gbps line rates.
Yes — the PLL requires an external loop filter (typically a series resistor and capacitor network) connected to the charge-pump output. The datasheet provides design equations for the loop bandwidth and phase margin based on the reference frequency and VCO gain.
It provides six LVPECL outputs from a single input (1:6 ratio). Each output can be independently divided down from the VCO frequency, so you can generate multiple clock rates from one PLL.
The AD9518-3ABCPZ-RL7 is the closest sibling — same package, same 1:6 LVPECL output count, same supply and temperature range, but with a maximum frequency of 2.25 GHz instead of 2.65 GHz. If your system clock target is below 2.25 GHz, the -3 variant is a drop-in alternative.