1 Device Overview

The AMC7924 features twenty four 12-bit digital to analog converters (DACs), twenty four 12-bit analog to digital converter inputs (ADC), and six general purpose input/outputs (GPIO). The device supports positive and negative DAC output ranges, up to 10-V full-scale range. The DACs are separated into two groups with dedicated voltage supplies, allowing the device to operate with two independent output ranges. This gives the flexibility to support multiple LDMOS and GaN power amplifiers (PAs) with one device.

The TMUX6234 is a four channel multiplexer 2:1 switch with a wide supply range and low on-resistance. The device has an operating range of ±18 V and a maximum continuous current load of 400 mA, making the TMUX6234 fully compatible with LDMOS and GaN PA control. The TMUX6234 has a fast switch on or off time of max 260 ns. The digital pins can handle voltages from 1.8 V to V_DD, allowing for a wide range of inputs to toggle the switches.

Both devices can operate with 1.8 V logic. This minimizes external circuitry required for operating the two devices.