MAX13325/MAX13326 are dual automotive audio line drivers with I2C control and diagnostic capabilities, providing a reliable differential interface between automotive audio components. They feature differential inputs and outputs, integrated output diagnostics, and can be controlled using an I2C interface or operate in standalone mode. The outputs can deliver up to 4VRMS signals with a fixed gain of 12dB or 0dB. The output diagnostics report conditions on a per channel basis, including short to GND, short to battery, overcurrent, overtemperature, and excessive offset. The output amplifiers can drive capacitive loads up to 4nF. MAX13325/MAX13326 are designed for automotive applications and can operate in a temperature range of -40°C to +105°C.
The MAX13325 and MAX13326 are dual automotive audio line drivers that provide a reliable differential interface for automotive audio systems. They feature differential inputs and outputs, integrated output diagnostics, and can be controlled via an I²C interface or operate in stand‑alone mode. The devices operate from –40 °C to +105 °C and are supplied in a 28‑pin TSSOP‑EP package with an exposed pad.
Key features include up to 4 VRMS output into 100 Ω loads, fixed gains of 12 dB (MAX13325) or 0 dB (MAX13326), ESD protection (+8 kV contact discharge, +15 kV air‑gap), load‑dump transient protection, and the ability to drive capacitive loads (<3 nF differential, <4 nF to ground). The datasheet provides absolute maximum ratings, electrical and digital characteristics, pin configuration, and typical application circuits.
| Operating Temperature Range | -40 °C to +105 °C |
|---|---|
| Package | 28‑pin TSSOP‑EP with exposed pad |
| Signal‑to‑Noise Ratio | 112 dB (A‑weighted) |
| CMRR | 80 dB at 1 kHz |
| PSRR | 70 dB at 1 kHz |
| Capacitive Load Drive Capability | < 3 nF differential, < 4 nF to ground |
They are specified to operate from –40 °C to +105 °C.
Both devices are offered in a 28‑pin TSSOP‑EP package with an exposed pad.