max5270a Maxim Integrated Products, Inc., max5270a Datasheet

max5270a

Manufacturer Part Number

max5270a

Description

Octal, 13-bit Voltage-output Dac With Parallel Interface

Manufacturer

Maxim Integrated Products, Inc.

Datasheet

1.MAX5270A.pdf (13 pages)

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Part Number:

max5270aEMH

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The MAX5270 contains eight 13-bit, voltage-output digi-

tal-to-analog converters (DACs). On-chip precision out-

put amplifiers provide the voltage outputs. The device

operates from +12V/-12V supplies. Its output voltage

swing ranges from 0V to +8.192V and is achieved with

no external components. The MAX5270 has three pairs

of differential reference inputs; two of these pairs are

connected to two DACs each, and a third pair is con-

nected to four DACs. The references are independently

controlled, providing different full-scale output voltages

to the respective DACs. The MAX5270 operates within

the following voltage ranges: V

The MAX5270 features double-buffered interface logic

with a 13-bit parallel data bus. Each DAC has an input

latch and a DAC latch. Data in the DAC latch sets the

output voltage. The eight input latches are addressed

with three address lines. Data is loaded to the input

latch with a single-write instruction. An asynchronous

load input (LD) transfers data from the input latch to the

DAC latch. The LD input controls all DACs; therefore, all

DACs can be updated simultaneously by asserting the

LD pin.

An asynchronous CLR input sets the output of all eight

DACs to the respective DUTGND input of the op amp.

Note that CLR is a CMOS input, which is powered by

The “A” grade of the MAX5270 has a maximum INL of

±2LSBs, while the “B” grade has a maximum INL of

±4LSBs. Both grades are available in 44-pin MQFP

packages.

Functional Diagram appears at end of data sheet.

19-1711; Rev 1; 1/01

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.

Industrial Process Controls

Arbitrary Function Generators

Avionics Equipment

Minimum Component Count Analog Systems

Digital Offset/Gain Adjustment

SONET Applications

Automatic Test Equipment (ATE)

. All other logic inputs are TTL/CMOS compatible.

= -11.4V to -12.6V, and V

________________________________________________________________ Maxim Integrated Products

General Description

= +4.75V to +5.25V.

= +11.4V to +12.6V,

Applications

Octal, 13-Bit Voltage-Output DAC

o Full 13-Bit Performance Without Adjustments

o Eight DACs in a Single Package

o Buffered Voltage Outputs

o Voltage Swing Between 0 and +8.192V

o 22µs Output Settling Time

o Drives up to 10,000pF Capacitive Load

o 30mV Low Output Glitch

o Low Power Consumption: 10mA (typ)

o Small 44-Pin MQFP Package

o Double-Buffered Digital Inputs

o Asynchronous Load Updates All DACs

o Asynchronous CLR Forces All DACs to DUTGND

with Parallel Interface

MAX5270ACMH

MAX5270BCMH

MAX5270AEMH

MAX5270BEMH

Simultaneously

Potential

DUTGNDAB

REFAB+

TOP VIEW

REFAB-

OUTA

PART

-40°C to +85°C

TEMP. RANGE

0°C to +70°C

Ordering Information

MQFP-44

MAX5270

Pin Configuration

PACKAGE

44 MQFP

PIN-

Features

DUTGNDGH

OUTH

REFGH-

REFGH+

CLR

D12

D11

D10

(LSB)

INL

±2

±4

±2

±4

Related parts for max5270a

max5270a Summary of contents

Page 1

... Low Output Glitch o Low Power Consumption: 10mA (typ) = +11.4V to +12.6V, o Small 44-Pin MQFP Package o Double-Buffered Digital Inputs o Asynchronous Load Updates All DACs Simultaneously o Asynchronous CLR Forces All DACs to DUTGND Potential PART MAX5270ACMH MAX5270BCMH MAX5270AEMH MAX5270BEMH TOP VIEW Applications DUTGNDAB OUTA REFAB- REFAB ...

Page 2

... DD SS Storage Temperature Range ............................ -65°C to +150°C Lead Temperature (soldering, 10s) ................................ +300° +4.096V, V GND DUTGND_ _ REF = +25°C.) A CONDITIONS N MAX5270A INL MAX5270B DNL Guaranteed monotonic ZSE FSE (Note 1) (Note 1) REF_ tied to AGND externally (Note 2) (Note 1) = +70° 10MΩ ...

Page 3

ELECTRICAL CHARACTERISTICS (continued +12V -12V +5V 50pF unless otherwise noted. Typical values are MIN MAX PARAMETER SYMBOL DUTGND_ ...

Page 4

Octal, 13-Bit Voltage-Output DAC with Parallel Interface DYNAMIC CHARACTERISTICS (V = +12V -12V +5V 50pF unless otherwise noted. Typical values are ...

Page 5

V = -12V +5V wise noted.) ZERO-SCALE AND FULL-SCALE ERROR vs. TEMPERATURE 0.20 0.15 0.10 0.05 FULL SCALE 0 -0.05 ZERO SCALE -0.10 -0.15 -0. ...

Page 6

Octal, 13-Bit Voltage-Output DAC with Parallel Interface (V = +12V -12V +5V GND wise noted.) MAJOR CARRY GLITCH IMPULSE (0xFFFF–0x10000) LD 5V/div OUT 5mV/div 2µs/div DIFFERENTIAL NONLINEARITY (MAX, MIN) vs. V REF ...

Page 7

PIN NAME Device Sense Ground Input for OUTA and OUTB. In normal operation, OUTA and OUTB are referenced 1 DUTGNDAB to DUTGNDAB. When CLR is low, OUTA and OUTB are forced to the potential on DUTGNDAB. 2 OUTA DAC A ...

Page 8

Octal, 13-Bit Voltage-Output DAC with Parallel Interface PIN NAME 32 OUTH DAC H Buffered Output Voltage Device Sense Ground Input for OUTG and OUTH. In normal operation, OUTG and OUTH are referenced 33 DUTGNDGH to DUTGNDGH. When CLR is low, ...

Page 9

CLR D11 D12 REF- REF+ Figure 1. DAC Simplified Circuit A0– D0–D12 LD NOTES: 1. ALL INPUT RISE AND ...

Page 10

Octal, 13-Bit Voltage-Output DAC with Parallel Interface Digital Inputs and Interface Logic All digital inputs are compatible with both TTL and CMOS logic. The MAX5270 interfaces with micro- processors using a data bus at least 13 bits wide. The interface ...

Page 11

Table 3. Analog Voltage vs. Digital Code INPUT CODE 1 1111 1111 1111 1 0000 0000 0000 0 1111 1111 1111 0 0000 0000 0001 0 0000 0000 0000 Note: Output voltage is based on REF+ = +4.096V, REF- = ...

Page 12

Octal, 13-Bit Voltage-Output DAC with Parallel Interface 12 ______________________________________________________________________________________ Functional Diagram REFAB- REFAB+ REFCDEF- REFCDEF+ REFGH- REFGH+ ...

Page 13

Driving Capacitive Loads The MAX5270 typically drives capacitive loads up to 0.01µF without a series output resistor. However, when- ever driving high capacitive loads prudent to use a 220Ω series resistor between the MAX5270 output and the capacitive ...

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