MAX5816ATB+T【PDF 1/32 页】IC DAC 12BIT SRL 4CH 10TDFN

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MAX5816

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

with Internal Reference and I2C Interface

Maxim Integrated Products 1

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

Benefits and Features

Four High-Accuracy DAC Channels

12-Bit Accuracy Without Adjustment

±1 LSB INL Buffered Voltage Output

Guaranteed Monotonic Over All Operating

Conditions

Independent Mode Settings for Each DAC

Three Precision Selectable Internal References

2.048V, 2.500V, or 4.096V

Internal Output Buffer

Rail-to-Rail Operation with External Reference

4.5s Settling Time

Outputs Directly Drive 2kI Loads

Small 3mm x 3mm 10-Pin TDFN Package

Wide 2.7V to 5.5V Supply Range

Fast 400kHz I2C-Compatible, 2-Wire Serial

Interface

Power-On-Reset to Zero-Scale DAC Output

Three Software-Selectable Power-Down Output

Impedances

1kI, 100kI, or High Impedance

19-6149; Rev 0; 2/12

Ordering Information appears at end of data sheet.

Functional Diagram

ADDR

SDA

SCL

OUTA

BUFFER

POR

VDD

GND

DAC CONTROL LOGIC

POWER-DOWN

REF

OUTB

OUTC

OUTD

I2C SERIAL

INTERFACE

1kI

100kI

CODE

LOAD

CLEAR/

RESET

CLEAR/

RESET

CODE

DAC

LATCH

8-/10-/12-BIT

DAC

1 OF 4 DAC CHANNELS

INTERNAL REFERENCE/

EXTERNAL BUFFER

MAX5816

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

or visit Maxim’s website at www.maxim-ic.com.

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

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