Features: · Nonvolatile Registers Initialize DACs to Stored States
· +2.7V to +5.25V Single-Supply Operation
· Dual 8-Bit DACs with Independent High and Low Reference Inputs
· Rail-to-Rail Output Buffers
· Low 200µA per DAC Supply Current
· Power-Down Mode Reduces Supply Current to 25µA (max)
· 400kHz, I2C-Compatible, 2-Wire Serial Interface
· Asynchronous MUTE Input
· Small 16-Pin QSOP PackageApplication·Digital Gain and Offset Adjustments
·Programmable Attenuators
·Portable Instruments
·Power-Amp Bias Control
·ATE Calibration
·Laser BiasingSpecifications(All voltages referenced to GND, unless otherwise noted.)
VDD, A0, A1, A2, A3, SCL, SDA, MUTE.................-0.3V to +6.0V
OUT0, OUT1, REFH0, REFH1
REFL0, REFL1 .........................................-0.3V to (VDD + 0.3V)
Maximum Current into Any Pin ....................................±50mA
Power Dissipation (TA = +70°C)
16-Pin QSOP (derate 8.3mW/°C above +70°C)........667mW
Operating Temperature Range ...................-40°C to +85°C
Junction Temperature ..............................................+150°C
Storage Temperature Range ...................-60°C to +150°C
Lead Temperature (soldering, 10s) .........................+300°C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
DescriptionThe MAX5109 dual 8-bit digital-to-analog converters (DACs) feature nonvolatile registers. These nonvolatile registers store the DAC operating modes and output states, allowing the DACs to initialize to specified configurations at power-up.
Precision on-chip output buffers swing rail-to-rail, and provide 8µs settling time. The MAX5109-compatible, 2-wire serial interface allows for a maximum clock frequency of 400kHz.
The MAX5109 has independent high and low reference inputs allowing maximum output voltage range flexibility. The reference rails accept voltage inputs that range from ground to the positive supply rail.
This device operates from a single +2.7V to +5.25V supply and consumes 200µA per DAC. A software-controlled power-down mode decreases supply current to less than 25µA. A software-controlled mute mode sets each DAC, or both DACs simultaneously, to their respective REFL_ voltages. The MAX5109 also includes an asynchronousMUTE input, that drives both DAC outputs simultaneously to their respective REFL_ voltages.
The MAX5109 is available in a 16-pin QSOP and is specified for operation over the extended (-40°C to +85°C) temperature range.
MAX5109 Data Sheet
