The AD8326 is a high output power programmable CATV line driver that supports the DOCSIS standard for reverse path transmission. The gain can be programmed in 0.75 dB steps over a range of 53.5 dB. It has low distortion at the output, with SFDR values of -62 dBc at 21 MHz and -58 dBc at 65 MHz. The device also features a 1 dB compression of 25 dBm at 10 MHz, low output noise level of -45 dBmV in 160 kHz, and maintains a 75 ohm output impedance.
The AD8326 is a high‑output‑power, digitally controlled variable‑gain amplifier optimized for coaxial line‑driving applications such as DOCSIS upstream cable modems. It offers a programmable gain range of 52.5 – 54.5 dB in 0.75 dB steps, low distortion, and a sleep mode that reduces quiescent current to a few milliamps.
The device is available in 28‑lead TSSOP and 28‑lead power‑SOIC packages, operates from a single or dual supply (11.4 – 12.6 V), and supports an operating temperature range of –40 °C to +85 °C. Detailed specifications, pin configurations, and performance graphs are provided in the document.
| Gain Range | 52.5 – 54.5 dB |
|---|---|
| Maximum Output Power | 67 dBmV |
| Bandwidth (‑3 dB) | 100 MHz |
| Operating Temperature Range | -40 °C to +85 °C |
| Supply Voltage (Operating Range) | 11.4 V – 12.6 V |
| Sleep Mode Quiescent Current | 1.5 mA – 4.5 mA |
| Output Noise Spectral Density (160 kHz, 10 MHz) | -45 dBmvV |
The gain can be programmed from 52.5 dB to 54.5 dB in 0.75 dB steps.
The device operates from a single or dual supply between 11.4 V and 12.6 V.
The AD8326 can deliver up to 67 dBmV into a 75 Ω load.
In sleep mode the quiescent current is between 1.5 mA and 4.5 mA.