19-0876; Rev 1; 5/96
CMOS, 碌P-Compatible, 5碌s/10碌s, 8-Bit ADCs
_______________General Description
Maxim鈥檚 MX7575/MX7576 are high-speed (5碌s/10碌s),
microprocessor (碌P) 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/碌s 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
REF
.
The MX7575/MX7576 are easily interfaced to all popu-
lar 8-bit 碌Ps 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 碌P 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.
____________________________Features
o
Fast Conversion Time:
5碌s (MX7575)
10碌s (MX7576)
MX7575/MX7576
o
Built-In Track/Hold Function (MX7575)
o
Low Total Unadjusted Error (卤1LSB max)
o
50kHz Full-Power Signal Bandwidth (MX7575)
o
Single +5V Supply Operation
o
8-Bit 碌P Interface
o
100ns Data-Access Time
o
Low Power: 15mW
o
Small-Footprint Packages
______________Ordering Information
PART
MX7575JN
TEMP. RANGE
0掳C to +70掳C
PIN-PACKAGE
18 Plastic DIP
INL
(LSB)
卤1
卤1/2
卤1
卤1/2
卤1
卤1/2
卤1
卤1
卤1/2
________________________Applications
Digital Signal Processing
High-Speed Data Acquisition
Telecommunications
Audio Systems
High-Speed Servo Loops
Low-Power Data Loggers
MX7575KN
0掳C to +70掳C
18 Plastic DIP
MX7575JCWN
0掳C to +70掳C
18 Wide SO
MX7575KCWN
0掳C to +70掳C
18 Wide SO
MX7575JP
0掳C to +70掳C
20 PLCC
MX7575KP
0掳C to +70掳C
20 PLCC
MX7575J/D
0掳C to +70掳C
Dice*
MX7575AQ
-25掳C to +85掳C
18 CERDIP**
MX7575BQ
-25掳C to +85掳C
18 CERDIP**
Ordering Information continued at end of data sheet.
* Contact factory for dice specifications.
** Contact factory for availability.
_________________Pin Configurations
TOP VIEW
CS 1
RD 2
TP (MODE) 3
BUSY 4
CLK 5
D7 (MSB) 6
D6 7
D5
8
18 V
DD
17 REF
_______________Functional Diagrams
V
DD
18
16
MX7575
AIN
MX7575
MX7576
TRACK/
HOLD
COMP
16 AIN
15 AGND
14 D0 (LSB)
13 D1
12 D2
11 D3
10 D4
AGND 15
REF 17
CLK
5
CLOCK
OSCILLATOR
DAC
SAR
6
LATCH AND
THREE-STATE
OUTPUT DRIVERS
14
9
DGND
D7
D0
DGND 9
CS
RD
TP
1
2
3
CONTROL
LOGIC
.
( ) ARE FOR MX7576 ONLY.
DIP/SO
Pin Configurations continued at end of data sheet.
4
BUSY
Functional Diagrams continued at end of data sheet.
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
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