MAX5207AEUB+T Datasheet MAX5205ACUB+, MAX5204AEUB+, MAX5207BEUB+ | P10-P12

MAX5204–MAX5207

Low-Cost, Voltage-Output, 16-Bit DACs in µMAX

10 ______________________________________________________________________________________

Applications Information

Power Supply and Bypassing

Considerations

Bypass the power supply with a 10µF capacitor in par-

allel with a 0.1µF capacitor to AGND. Minimize lead

lengths to reduce lead inductance. If noise becomes

an issue, use shielding and/or ferrite beads to increase

isolation.

Output Buffer

The MAX5204–MAX5207 include low-offset, low-noise

buffers enabling the output to source 15mA or sink

5mA. The output buffer operates at a slew rate of

0.6V/µs. With a 1/4 FS to 3/4 FS output transition, the

buffer output typically settles to 1LSB in about 25µs.

The MAX5204–MAX5207 output buffers provide a low

0.2Ω typical output impedance. The MAX5204–

MAX5207 buffer amplifiers typically produce

120nV/√Hz noise at 10kHz.

CS0L

CSWL

CSWH

SHUTDOWN WAKE-UP

CS0L

CSWL

CSWH

SHUTDOWN WAKE-UP

SCLK

A. WAKING UP USING A THIRD FALLING EDGE ON CS.

B. WAKING UP USING A TRANSITION ON SCLK.

SCLK

Figure 4. Shutdown Timing

CSS

D14D15

CSH

CS1

CS0

SCLK

DIN

LDAC

CSWH

LDACS

LDAC

Figure 3. 4-Wire Interface Timing Diagram

MAX5204–MAX5207

Low-Cost, Voltage-Output, 16-Bit DACs in µMAX

______________________________________________________________________________________ 11

Bipolar Configuration

The MAX5204–MAX5207 are designed for unipolar opera-

tion, but can be used in bipolar applications with an exter-

nal amplifier and resistors. Figure 5 shows the

MAX5204–MAX5207 configured for bipolar operation. The

op amp is set for unity gain. Table 1 lists the offset binary

code for this circuit. Output voltage range is ±V

REF

Layout Considerations

Digital and AC transient signals coupling to AGND can

create noise at the output. Connect AGND to the high-

est quality ground available. Use proper grounding

techniques, such as a multilayer board with a low-

inductance ground plane. Wire-wrapped boards and

sockets are not recommended. For optimum system

performance, use printed circuit (PC) boards with sep-

arate analog and digital ground planes. Connect the

two ground planes together at the low-impedance

power-supply source. Connect DGND and AGND pins

together at the IC. The best ground connection is

achieved by connecting the DAC’s DGND and AGND

together, and then connecting that point to the system

analog ground plane. If the DAC’s DGND is connected

to the system digital ground, digital noise can get

through the DAC’s analog portion.

Chip Information

TRANSISTOR COUNT: 8764

PROCESS: BiCMOS

CLR

AGND

REF

DIN

SCLK

DGND

BIPOLAR OUT

(±V

REF

)

LDAC

OUT

MC68XXXX

10µF

0.1µF

10µF

PCS0

MOSI

SCLK

+5V

MAX5204–

MAX5207

MAX400

Figure 5. MAX5204–MAX5207 Typical Operating Circuit—Bipolar Output

DAC LATCH CONTENTS

MSB LSB

ANALOG OUTPUT, V

OUT

1111 1111 1111 1111 +V

REF

× (32,767 / 32,768)

1000 0000 0000 0001 +V

REF

× (1 / 32,768)

1000 0000 0000 0000 0V

0111 1111 1111 1111 -V

REF

× (1 / 32,768)

0000 0000 0000 0000 -V

REF

× (32,768 / 32,768)

Table 1. Bipolar Code Table

MAX5204–MAX5207

Low-Cost, Voltage-Output, 16-Bit DACs in µMAX

12 ______________________________________________________________________________________

Selector Guide

PART

INTEGRAL NONLINEARITY

(LSB MAX)

SUPPLY VOLTAGE

RANGE (V)

REFERENCE INPUT

RANGE (V)

POWER-ON-RESET

VALUE

MAX5204AEUB

20 4.75 to 5.25 4 to V

Midscale

MAX5204ACUB

20 4.75 to 5.25 4 to V

Midscale

MAX5204BEUB

40 4.75 to 5.25 4 to V

Midscale

MAX5205AEUB

20 4.75 to 5.25 4 to V

Zero

MAX5205ACUB

20 4.75 to 5.25 4 to V

Zero

MAX5205BEUB

40 4.75 to 5.25 4 to V

Zero

MAX5206AEUB

20 2.7 to 3.6 2 to V

Midscale

MAX5206ACUB

20 2.7 to 3.6 2 to V

Midscale

MAX5206BEUB

40 2.7 to 3.6 2 to V

Midscale

MAX5207AEUB

20 2.7 to 3.6 2 to V

Zero

MAX5207ACUB

20 2.7 to 3.6 2 to V

Zero

MAX5207BEUB

40 2.7 to 3.6 2 to V

Zero

P1-P3 P4-P6 P7-P9 P10-P12 P13-P13

MAX5207AEUB+T

Mfr. #:

Buy MAX5207AEUB+T

Manufacturer:

Maxim Integrated

Description:

Digital to Analog Converters - DAC 16Bit DAC w/Int Reference

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New from this manufacturer.

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MAX5207AEUB+T

MAX5207AEUB+T

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