High Voltage, Quad-Channel

12-Bit Voltage Output DAC

Data Sheet

AD5504

Rev. B

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FEATURES

Quad-channel high voltage DAC

12-bit resolution

Pin selectable 30 V or 60 V output range

Integrated precision reference

Low power serial interface with readback capability

Integrated temperature sensor alarm function

Power-on reset

Simultaneous updating via LDAC

Wide operating temperature: −40°C to +105°C

APPLICATIONS

Programmable voltage sources

High voltage LED drivers

Receiver bias in optical communications

GENERAL DESCRIPTION

The AD5504 is a quad-channel, 12-bit, serial input, digital-to-

analog converter with on-chip high voltage output amplifiers

and an integrated precision reference. The DAC output voltage

ranges are programmable via the range select pin (R_SEL). If

R_SEL is held high, the DAC output ranges are 0 V to 30 V. If

R_SEL is held low, the DAC output ranges are 0 V to 60 V. The

on-chip output amplifiers allow an output swing within the

The AD5504 has a high speed serial interface, which is com-

patible with SPI®-, QSPI™-, MICROWIRE™-, and DSP-interface

standards and can handle clock speeds of up to 16.667 MHz.

FUNCTIONAL BLOCK DIAGRAM

POWER-ON

RESET

DGND

AGND

SDO

SCLK

SDI

SYNC

LDAC

ALARM

REFERENCE

AD5504

DACA

INPUT

REGISTER

A

DAC

REGISTER

A

+

–

1713kΩ

122.36kΩ

12

DAC B

INPUT

REGISTER

B

DAC

REGISTER

B

+

–

1713kΩ

122.36kΩ

12

DAC C

INPUT

REGISTER

C

DAC

REGISTER

C

+

–

1713kΩ

122.36kΩ

12

DAC D

INPUT

REGISTER

D

DAC

REGISTER

D

+

–

1713kΩ

122.36kΩ

12

12

TEMPERATURE

SENSOR

POWER-DOWN

CONTROL LOGIC

INPUT

CONTROL

LOGIC

Figure 1.