Creating MIPI C-PHY and D-PHY Waveforms using ADATE334, a high-performance dual integrated data converter operating at 2.3GHz

The ADATE334, a new dual-channel automatic test equipment (ATE) solution, has been introduced by Analog Devices. This innovative device is designed to cater to a wide range of applications, thanks to its advanced features and compatibility with MIPI physical layers.

At the heart of the ADATE334 is a low voltage driver, in conjunction with a high voltage driver, capable of generating signals ranging from 25mVpp to 600mVpp at up to 4.6Gbps in a 50Ω environment. The low voltage driver, along with the internal multiplexers, also generates control signals such as SELECTED_VSWA_x and SELECTED_VSWB_x for internal low voltage driver control.

The high voltage driver, on the other hand, has three active states - high (VIH), low (VIL), and terminate mode (VIT) - as well as a high impedance inhibit state (HiZ). The state of the high voltage driver output is determined by high voltage driver control signals, as shown in Table 1.

The internal multiplexers in the ADATE334 are also responsible for directing high-speed inputs to either internal high voltage or low voltage driver control signals. This functionality, coupled with the utilization of dedicated 16-bit DACs with on-chip calibration registers, ensures that the ADATE334 provides all necessary DC levels for its operation.

The ADATE334 is not just a driver; it performs pin electronics functions of driver, comparator, and active load (DCL), and also features a four-quadrant per pin parametric measurement unit (PPMU). This makes it a comprehensive solution for various testing needs.

One of the key advantages of the ADATE334 is its open circuit drive capability, which ranges from -1.5V to +7.0V. Additionally, the device's high voltage and low voltage drivers can generate multilevel waveforms that are MIPI C-PHY and D-PHY compatible.

The ADATE334 output is the sum of the high voltage driver and low voltage driver outputs. The inhibit state and integrated dynamic clamps in the device facilitate significant attenuation of transmission line reflections when the driver is not actively terminating the line, ensuring efficient performance.

For more detailed information about the ADATE334, including its block diagram (Figure 1) and the determination of low voltage driver control signals (Table 2), refer to the ADATE334 data sheet and functional block diagram. The MIPI Alliance provides a set of specialized physical layers with both complementary and unique features, mainly used for camera, display, and mobile applications.

In conclusion, the ADATE334 is a versatile and powerful dual-channel ATE solution, developed by Analog Devices, that offers a wide range of features and compatibility with MIPI physical layers, making it an ideal choice for various testing applications.