MX7576SQ Maxim Integrated, MX7576SQ Datasheet

MX7576SQ

Manufacturer Part Number

MX7576SQ

Description

Analog to Digital Converters - ADC 8-Bit Precision DAC

Manufacturer

Maxim Integrated

Datasheet

1.MX7576KCWNT.pdf (12 pages)

Specifications of MX7576SQ

Number Of Channels

Architecture

SAR

Conversion Rate

100 KSPs

Resolution

8 bit

Input Type

Single-Ended

Snr

45 dB

Interface Type

Parallel

Operating Supply Voltage

5 V

Maximum Operating Temperature

+ 125 C

Package / Case

CDIP N

Maximum Power Dissipation

842 mW

Minimum Operating Temperature

- 55 C

Number Of Converters

Voltage Reference

External

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Maxim’s MX7575/MX7576 are high-speed (5µs/10µs),

microprocessor (µP) compatible, 8-bit analog-to-digital

converters (ADCs). The MX7575 provides an on-chip

track/hold function that allows full-scale signals up to

50kHz (386mV/µs slew rate) to be acquired and digi-

tized accurately. Both ADCs use a successive-approxi-

mation technique to achieve their fast conversions and

low power dissipation. The MX7575/MX7576 operate

with a +5V supply and a 1.23V external reference. They

accept input voltages ranging from 0V to 2V

The MX7575/MX7576 are easily interfaced to all popu-

lar 8-bit µPs through standard CS and RD control sig-

nals. These signals control conversion start and data

access. A BUSY signal indicates the beginning and

end of a conversion. Since all the data outputs are

latched and three-state buffered, the MX7575/MX7576

can be directly tied to a µP data bus or system l/O port.

Maxim also makes the MAX165, a plug-in replacement

for the MX7575 with an internal 1.23V reference. For

applications that require a differential analog input and

an internal reference, the MAX166 is recommended.

________________________Applications

19-0876; Rev 1; 5/96

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800

_________________Pin Configurations

_______________General Description

TOP VIEW

( ) ARE FOR MX7576 ONLY.

Pin Configurations continued at end of data sheet.

Digital Signal Processing

High-Speed Data Acquisition

Telecommunications

Audio Systems

High-Speed Servo Loops

Low-Power Data Loggers

CMOS, µP-Compatible, 5µs/10µs, 8-Bit ADCs

TP (MODE)

D7 (MSB)

DGND

BUSY

CLK

________________________________________________________________ Maxim Integrated Products

MX7575

MX7576

DIP/SO

REF

AIN

AGND

D0 (LSB)

REF

____________________________Features

Ordering Information continued at end of data sheet.

* Contact factory for dice specifications.

** Contact factory for availability.

_______________Functional Diagrams

______________Ordering Information

MX7575JN

MX7575KN

MX7575JCWN

MX7575KCWN

MX7575JP

MX7575KP

MX7575J/D

MX7575AQ

MX7575BQ

AGND

Functional Diagrams continued at end of data sheet.

Fast Conversion Time: 5µs (MX7575)

Built-In Track/Hold Function (MX7575)

Low Total Unadjusted Error (±1LSB max)

50kHz Full-Power Signal Bandwidth (MX7575)

Single +5V Supply Operation

8-Bit µP Interface

100ns Data-Access Time

Low Power: 15mW

Small-Footprint Packages

CLK

REF

AIN

PART

MX7575

OSCILLATOR

CLOCK

BUSY

-25°C to +85°C

TEMP. RANGE

0°C to +70°C

CONTROL

LOGIC

TRACK/

HOLD

10µs (MX7576)

DAC

SAR

PIN-PACKAGE

18 Plastic DIP

18 Wide SO

20 PLCC

Dice*

18 CERDIP**

OUTPUT DRIVERS

THREE-STATE

LATCH AND

COMP

DGND

(LSB)

±1

±1/2

±1

±1/2

±1

±1/2

±1

±1/2

INL

. .

Related parts for MX7576SQ

MX7576SQ Summary of contents

Page 1

... DGND DIP/ ARE FOR MX7576 ONLY. Pin Configurations continued at end of data sheet. ________________________________________________________________ Maxim Integrated Products For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800 ____________________________Features Fast Conversion Time: 5µs (MX7575) Built-In Track/Hold Function (MX7575) Low Total Unadjusted Error (±1LSB max) ...

Page 2

CMOS, µP-Compatible, 5µs/10µs, 8-Bit ADCs ABSOLUTE MAXIMUM RATINGS V to AGND...............................................................-0.3V, + DGND ..............................................................-0.3V, +7V DD AGND to DGND ...............................................-0.3V, V Digital Input Voltage to DGND (CS, RD, TP, MODE) ......................................-0.3V, V Digital Output Voltage to DGND ...

Page 3

CMOS, µP-Compatible, 5µs/10µs, 8-Bit ADCs ELECTRICAL CHARACTERISTICS (continued +5V 1.23V; AGND = DGND = 0V REF unless otherwise noted.) A MIN MAX PARAMETER SYMBOL CLOCK Input Low Voltage ...

Page 4

CMOS, µP-Compatible, 5µs/10µs, 8-Bit ADCs TIMING CHARACTERISTICS (Note +5V 1.23V, AGND = DGND = 0V.) DD REF PARAMETER SYMBOL Setup Time BUSY Propagation Time t 2 Data-Access Time ...

Page 5

CMOS, µP-Compatible, 5µs/10µs, 8-Bit ADCs 100pF DGND a) HIGH HIGH NOTE: D_ REPRESENTS ANY OF THE DATA OUTPUTS Figure 1. Load Circuits for Data-Access Time Test _______________Detailed Description Converter Operation The ...

Page 6

CMOS, µP-Compatible, 5µs/10µs, 8-Bit ADCs CONV BUSY HIGH- DATA OLD DATA IMPEDANCE BUS Figure 3. Slow-Memory Interface Timing Diagram A8–A15 ADDRESS BUS +5V TP/MODE 8085A-2 ADDRESS CS DECODE S0 ...

Page 7

CMOS, µP-Compatible, 5µs/10µs, 8-Bit ADCs ADDRESS BUS Z-80 +5V TP/MODE ADDRESS MREQ EN CS DECODE DB7 DATA BUS DB0 * SOME CIRCUITRY OMITTED FOR CLARITY Figure 7. MX7575/MX7576 to Z-80 ROM Interface PA2 ADDRESS BUS PA0 ...

Page 8

CMOS, µP-Compatible, 5µs/10µs, 8-Bit ADCs MX7575 Track/Hold The track/hold consists of a sampling capacitor and a switch to capture the input signal. The simplified dia- gram of this block is shown in Figure 11. At the begin- ning of the ...

Page 9

CMOS, µP-Compatible, 5µs/10µs, 8-Bit ADCs +25° 100 1k 10k INPUT FREQUENCY (Hz) Figure 13. MX7575 SNR vs. Input Frequency 2 +125° +85°C ...

Page 10

CMOS, µP-Compatible, 5µs/10µs, 8-Bit ADCs + 0 2.46V(max) CLK AIN 3.3k 4 BUSY +1.23V REF + TP/ - AGND MODE ...

Page 11

CMOS, µP-Compatible, 5µs/10µs, 8-Bit ADCs + 0 3.3k +5V TLC271 + 0 ICL8069 1.2V REFERENCE 8.2k 820 R7 R3 10k 500 INPUT VOLTAGE Figure ...

Page 12

... MX7576JN D0 (LSB) 16 MX7576KN D1 15 MX7576JCWN MX7576KCWN D2 14 MX7576JP MX7576KP MX7576J/D MX7576AQ MX7576BQ MX7576JEWN MX7576KEWN MX7576JEQP MX7576KEQP MX7576SQ MX7576TQ * Contact factory for dice specifications. ** Contact factory for availability. N.C. BUSY D5 DGND 0.081" (2.057mm) REF D3 AIN AGND* *The two AGND pads must both be used (bonded together). ...

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