For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

General Description

The MAX5621/MAX5622/MAX5623 are 16-bit digital-to-

analog converters (DACs) with 16 sample-and-hold

(SHA) outputs for applications where a high number of

programmable voltages are required. These devices

include a clock oscillator and a sequencer that updates

the DAC with codes from an internal SRAM. No external

components are required to set offset and gain.

The MAX5621/MAX5622/MAX5623 feature a -4.5V to

+9.2V output voltage range. Other features include a

200µV/step resolution, with output linearity error, typi-

cally 0.005% of full-scale range (FSR). The 100kHz

refresh rate updates each SHA every 320µs, resulting

in negligible output droop. Remote ground sensing

allows the outputs to be referenced to the local ground

of a separate device.

These devices are controlled through a 20MHz

SPI™/QSPI™/MICROWIRE™-compatible 3-wire serial

interface. Immediate update mode allows any channel’s

output to be updated within 20µs. Burst mode allows

multiple values to be loaded into memory in a single,

high-speed data burst. All channels are updated within

330µs after data has been loaded.

Each device features an output clamp and output resis-

tors for filtering. The MAX5621 features a 50

Ω output

impedance and is capable of driving up to 250pF of out-

put capacitance. The MAX5622 features a 500

Ω output

impedance and is capable of driving up to 10nF of output

capacitance. The MAX5623 features a 1k

Ω output imped-

ance and is capable of driving up to 10nF of output

capacitance.

The MAX5621/MAX5622/MAX5623 are available in 64-pin

TQFP (12mm x 12mm) and 68-pin thin QFN (10mm x

10mm) packages.

________________________Applications

MEMS Mirror Servo Control

Industrial Process Control

Automatic Test Equipment

Instrumentation

Features

♦ Integrated 16-Bit DAC and 16-Channel SHA with

SRAM and Sequencer

♦ 16 Voltage Outputs

♦ 0.005% Output Linearity

♦ 200µV Output Resolution

♦ Flexible Output Voltage Range

♦ Remote Ground Sensing

♦ Fast Sequential Loading: 1.3µs per Register

♦ Burst and Immediate Mode Addressing

♦ No External Components Required for Setting

Gain and Offset

♦ Integrated Output Clamp Diodes

♦ Three Output Impedance Options

MAX5621 (50

Ω), MAX5622 (500Ω), and

MAX5623 (1k

Ω)

19-2715; Rev 2; 1/06

16-Bit DACs with 16-Channel

Sample-and-Hold Outputs

________________________________________________________________ Maxim Integrated Products

1

Pin Configurations

Ordering Information

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor, Corp.

PART

PIN-PACKAGE

PKG CODE

MAX5621UCB

64 TQFP

C64-8

MAX5621UTK

68 Thin QFN-EP*

T6800-3

MAX5622UCB

64 TQFP

C64-8

MAX5622UTK

68 Thin QFN-EP*

T6800-3

MAX5623UCB

64 TQFP

C64-8

MAX5623UTK

68 Thin QFN-EP*

T6800-3

Pin Configurations continued at end of data sheet.

38

39

40

41

42

43

44

45

46

47

THIN QFN

TOP VIEW

35

36

37

48

49

50

11

10

9

8

7

6

5

4

3

2

16

15

14

13

12

1

MAX5621

MAX5622

MAX5623

ECLK

CH

OUT10

N.C.

OUT9

N.C.

OUT8

AGND

N.C.

OUT7

N.C.

OUT6

N.C.

CL

IMMED

SCLK

DIN

CS

17

N.C.

AGND

DGND

CLKSEL

RST

GS

N.C.

N.C.

*EP = Exposed pad.

Note: All devices specified over 0°C to +85°C operating

range. For other temperature ranges, contact factory.