MX7575 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – CMOS, uP-Compatible, 5μs/10μs, 8-Bit ADCs

19-0876; Rev 1; 5/96
CMOS, µP-Compatible, 5µs/10µs, 8-Bit ADCs
_______________General Description
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 2VREF.
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
Digital Signal Processing
High-Speed Data Acquisition
Telecommunications
Audio Systems
High-Speed Servo Loops
Low-Power Data Loggers
_________________Pin Configurations
____________________________Features
o Fast Conversion Time: 5µs (MX7575)
10µs (MX7576)
o Built-In Track/Hold Function (MX7575)
o Low Total Unadjusted Error (±1LSB max)
o 50kHz Full-Power Signal Bandwidth (MX7575)
o Single +5V Supply Operation
o 8-Bit µP Interface
o 100ns Data-Access Time
o Low Power: 15mW
o Small-Footprint Packages
______________Ordering Information
PART
TEMP. RANGE
PIN-PACKAGE
INL
(LSB)
MX7575JN
0°C to +70°C 18 Plastic DIP ±1
MX7575KN
0°C to +70°C 18 Plastic DIP ±1/2
MX7575JCWN 0°C to +70°C 18 Wide SO
±1
MX7575KCWN 0°C to +70°C 18 Wide SO
±1/2
MX7575JP
0°C to +70°C 20 PLCC
±1
MX7575KP
0°C to +70°C 20 PLCC
±1/2
MX7575J/D
0°C to +70°C Dice*
±1
MX7575AQ
-25°C to +85°C 18 CERDIP**
±1
MX7575BQ
-25°C to +85°C 18 CERDIP**
±1/2
Ordering Information continued at end of data sheet.
* Contact factory for dice specifications.
** Contact factory for availability.
_______________Functional Diagrams
TOP VIEW
CS 1
RD 2
TP (MODE) 3
BUSY 4
CLK 5
D7 (MSB) 6
D6 7
D5 8
DGND 9
MX7575
MX7576
18 VDD
17 REF
16 AIN
15 AGND
14 D0 (LSB)
13 D1
12 D2
11 D3
10 D4
( ) ARE FOR MX7576 ONLY.
DIP/SO
Pin Configurations continued at end of data sheet.
VDD
18
AIN ^{16 MX7575}
AGND ¹⁵
REF ¹⁷
CLK ⁵
CLOCK
OSCILLATOR
TRACK/
HOLD
DAC
SAR
COMP
CS
RD
1
2
TP ³
CONTROL
LOGIC
LATCH AND
THREE-STATE
OUTPUT DRIVERS
4
BUSY
Functional Diagrams continued at end of data sheet.
9
DGND
..6
D7
D0
14
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