MAX5816 Datasheet, PDF(1/32 Page) Maxim Integrated Products – Ultra-Small, Quad-Channel, 12-Bit Buffered Output DAC with Internal Reference and I2C Interface

19-6149; Rev 0; 2/12

MAX5816

Ultra-Small, Quad-Channel, 12-Bit Buffered Output DAC

with Internal Reference and I2C Interface

General Description

The MAX5816 4-channel, low-power, 12-bit, voltage-

output digital-to-analog converter (DAC) includes output

buffers and an internal reference that is selectable to be

2.048V, 2.500V, or 4.096V. The MAX5816 accepts a wide

supply voltage range of 2.7V to 5.5V with extremely low

power (3mW) consumption to accommodate most low-

voltage applications. A precision external reference input

allows rail-to-rail operation and presents a 100kI (typ)

load to an external reference.

The MAX5816 has an I2C-compatible, 2-wire interface that

operates at clock rates up to 400kHz. The DAC output is

buffered and has a low supply current of less than 250FA

per channel and a low offset error of Q0.5mV (typ). On

power-up, the MAX5816 resets the DAC outputs to zero,

providing additional safety for applications that drive

valves or other transducers which need to be off on pow-

er-up. The internal reference is initially powered down to

allow use of an external reference. The MAX5816 allows

simultaneous output updates using software LOAD com-

mands. Multiple devices can simultaneously be updated

using software load command in combination with the

broadcast ID.

The MAX5816 is available in a 10-pin TDFN package and

is specified over the -40NC to +125NC temperature range.

Applications

Programmable Voltage and Current Sources

Gain and Offset Adjustment

Automatic Tuning and Optical Control

Power Amplifier Control and Biasing

Process Control and Servo Loops

Portable Instrumentation

Data Acquisition

Ordering Information appears at end of data sheet.

Benefits and Features

S Four High-Accuracy DAC Channels

ï² 12-Bit Accuracy Without Adjustment

ï² Â±1 LSB INL Buffered Voltage Output

ï² Guaranteed Monotonic Over All Operating

Conditions

ï² Independent Mode Settings for Each DAC

S Three Precision Selectable Internal References

ï² 2.048V, 2.500V, or 4.096V

S Internal Output Buffer

ï² Rail-to-Rail Operation with External Reference

ï² 4.5Âµs Settling Time

ï² Outputs Directly Drive 2kI Loads

S Small 3mm x 3mm 10-Pin TDFN Package

S Wide 2.7V to 5.5V Supply Range

S Fast 400kHz I2C-Compatible, 2-Wire Serial

Interface

S Power-On-Reset to Zero-Scale DAC Output

S Three Software-Selectable Power-Down Output

Impedances

ï² 1kI, 100kI, or High Impedance

Functional Diagram

VDD

REF

SCL

SDA

ADDR

I2C SERIAL

INTERFACE

INTERNAL REFERENCE/

EXTERNAL BUFFER

CODE

DAC

LATCH

8 -/10-/12-BIT

DAC

CODE

CLEAR /

RESET

LOAD

CLEAR /

RESET

POR

DAC CONTROL LOGIC

POWER-DOWN

MAX5816

1 OF 4 DAC CHANNELS

BUFFER

100kI 1kI

OUTA

OUTB

OUTC

OUTD

GND

For related parts and recommended products to use with this part, refer to: www.maxim-ic.com/MAX5816.related

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maximâs website at www.maxim-ic.com.

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