AD8384

Rev. 0 | Page 10 of 24

Pin Name

Function

Description

INV

Invert

When this input is HIGH, the VIDx output voltages are above V2. When INV is LOW, the VIDx

output voltages are below V1.

The state of INV is latched on the first rising CLK edge, after XFR is detected. The VIDx

outputs change on the rising CLK edge after the next XFR is detected.

DVCC

Digital Power Supply

Digital Power Supply.

DGND

Digital Ground

This pin is normally connected to the digital ground plane.

AVCCx

Analog Power

Supplies

Analog Power Supplies.

AGNDx

Analog Ground

Analog Supply Returns.

SVRH, SVRL

Serial DAC Reference

Voltages

Reference Voltages for the Output Amplifiers of the Control DACs.

SCL

Serial Data Clock

Serial Data Clock.

SDI

Data Input

While the SEN input is LOW, one 12-bit serial word is loaded into the serial DAC on the

rising edges of SCL. The first bit selects the output, the next three bits are unused, and the

subsequent eight bits are the data used in the DAC.

SEN

Serial DAC Enable

A falling edge of this input initiates a loading cycle. While this input is held LOW, the serial

DAC is enabled and data is loaded on every rising edge of SCL. The selected output is

updated on the rising edge of this input. While this input is held HIGH, the control DAC is

disabled.

VAO1, VAO2

Serial DAC Voltage

Output

These output voltages are updated on the rising edge of the SEN input.

TSTM

Test Mode

When this input is LOW, the output mode is determined by the function programmed into

the serial interface.

While this input is held HIGH, the output mode is forced to NORMAL, regardless of function

programmed into the serial interface.

MONITI

Monitor Input

Logic Input of the Level Shifting Inverting Edge Detector.

MONITO

Monitor Output

Output of the Level Shifting Inverting Edge Detector.

DYIN, DIRYIN,

DIRXIN, DXIN,

NRGIN, ENBX(1–4)IN

Inverting Level

Shifter Inputs

Logic Input of the Inverting Level Shifters.

DX, DY, DIRX, DIRY,

NRG, ENBX(1-4)

Inverting Level

Shifter Outputs

While the corresponding input voltage of these level shifters is below the threshold

voltage, the output voltage at these pins is at VOH.

While the corresponding input voltage of these level shifters is above the threshold

voltage, the output voltage at these pins is at VOL.

CLXIN, CLYIN

Complementary

Level Shifter Inputs

Logic Input of the Complementary Level Shifters.

CLX, CLXN, CLY,

CLYN,

Complementary

Level Shifter Outputs

While the corresponding input voltage of these level shifters is below the threshold

voltage, the voltage at the noninverting output pins is at VOH and the voltage at the

inverting outputs is at VOL.

While the corresponding input voltage of these level shifters is above the threshold

voltage, the voltage at the noninverting output pins is at VOL and the voltage at the

inverting outputs is at VOH.