AD8326 is a high output power programmable CATV line driver from Analog Devices. It supports DOCSIS standard and has a programmable gain range of 0.75dB steps over 53.5dB. AD8326 features low distortion, high output power and high bandwidth, and is suitable for CATV terminal devices and other applications.
The AD8326 is a digitally controlled, high‑output power line driver designed for CATV upstream applications such as cable modems. It provides gain programmable in 0.75 dB steps over a 53.5 dB range, low distortion, and a sleep mode that reduces quiescent current to 4 mA. Two variants, ARP and ARE, support different output power levels while maintaining a 75 Ω output impedance.
The device is supplied in a 28‑lead TSSOP or 28‑lead power SOIC package, operates from a 11.4 V to 12.6 V supply, and features a full‑featured pinout with logic‑compatible inputs. Detailed specifications include gain range, bandwidth, output noise, and power‑control characteristics, and an ordering guide lists part numbers and evaluation boards.
| Gain Range | 52.5 – 54.5 dB |
|---|---|
| Bandwidth (-3 dB) | 100 MHz |
| Maximum Output Voltage | 67 dBmV (ARP) / 65 dBmV (ARE) |
| Supply Voltage Operating Range | 11.4 V – 12.6 V |
| Quiescent Current (TXEN=1) | 147 mA – 167 mA |
| Operating Temperature | -40 °C to +85 °C |
| Input Resistance (Differential) | 1600 Ω |
| Output Noise Spectral Density | -28 dBmV in 160 kHz (max gain, 10 MHz) |
The AD8326 provides a gain range from 52.5 dB to 54.5 dB.
It operates from an input voltage between 11.4 V and 12.6 V.
The quiescent current is between 147 mA and 167 mA when TXEN is high.
It is offered in a 28‑lead power SOIC (ARP) and a 28‑lead TSSOP with exposed pad (ARE).