The ADN2526 is a differential laser diode driver with an operation speed of 11.3 Gbps and rise/fall times of 24 ps. It supports full back-termination and can drive TOSAs with resistances ranging from 5Ω to 50Ω. It has a bias current range of 10 mA to 100 mA and a differential modulation current range of 10 mA to 80 mA. Additionally, it features voltage input control, automatic laser shutdown, and cross point adjustment. The ADN2526 is suitable for applications such as SONET OC-192 and SDH STM-64 optical transceivers, 10 Gb Fibre Channel transceivers, and 10 Gb Ethernet optical transceivers.
The ADN2526 is a 3 mm × 3 mm LFCSP laser diode driver offering 3.3 V operation, up to 11.3 Gbps data rates, and active back‑termination for excellent eye‑diagram quality. Features include bias and modulation current control, automatic laser shutdown (ALS), cross‑point adjustment, and compliance with SFP+ MSA.
The document includes detailed specifications such as bias and modulation current ranges, rise/fall times, thermal data, absolute maximum ratings, pin configuration, typical performance curves, and a design example with headroom calculations. Ordering information and package dimensions are also provided.
| Bias Current Range | 10–100 mA |
|---|---|
| Modulation Current Range | 10–80 mA |
| Rise Time (20%‑80%) | Typical 24 ps |
| Fall Time (20%‑80%) | Typical 24 ps |
| Input Data Rate | 11.3 Gbps NRZ |
| Supply Voltage (VEE) | 3.0–3.6 V (typ 3.3 V) |
The device supports a bias current from 10 mA up to 100 mA.
ALS allows the bias and modulation currents to be turned on or off by driving the ALS pin with an LVTTL logic source.
It is supplied in a 3 mm × 3 mm LFCSP (Lead‑Frame Chip‑Scale Package).
The recommended supply voltage is 3.3 V, with an allowed range of 3.0 V to 3.6 V.