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MX7828KEAI Datasheet

  • MX7828KEAI

  • CMOS, High-Speed, 8-Bit ADCs with Multiplexer

  • 12頁

  • MAXIM   MAXIM

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19-0255; Rev 2; 4/94
CMOS, High-Speed, 8-Bit ADCs
with Multiplexer
_______________General Description
The MAX154/MAX158 and MX7824/MX7828 are high-
speed, multi-channel analog-to-digital converters
(ADCs). The MAX154 and MX7824 have four analog
input channels, while the MAX158 and MX7828 have
eight channels. Conversion time for all devices is 2.5碌s.
The MAX154/MAX158 also feature a 2.5V on-chip refer-
ence, forming a complete high-speed data acquisition
system.
All four converters include a built-in track/hold, eliminat-
ing the need for an external track/hold with many input
signals. The analog input range is 0V to +5V, although
the ADC operates from a single +5V supply.
Microprocessor interfaces are simplified by the ADC鈥檚
ability to appear as a memory location or I/O port without
the need for external logic. The data outputs use latched,
three-state buffer circuitry to allow direct connection to a
microprocessor data bus or system input port.
The MX7824 and MX7828 are pin compatible with
Analog Devices鈥?AD7824 and AD7828. The MAX154
and MAX158, which feature internal references, are also
compatible with these products.
____________________________Features
o
One-Chip Data Acquisition System
o
Four or Eight Analog Input Channels
o
2.5碌s per Channel Conversion Time
o
Internal 2.5V Reference (MAX154/MAX158 only)
o
Built-In Track/Hold Function
o
1/2
LSB Error Specification
o
Single +5V Supply Operation
o
No External Clock
o
New Space-Saving SSOP Package
MX7824/MX7828
______________Ordering Information
PART
MX7824LN
MX7824KN
MX7824LCWG
MX7824KCWG
MX7824LCAG
MX7824KCAG
TEMP. RANGE
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
PIN-PACKAGE
24 Narrow
Plastic DIP
24 Narrow
Plastic DIP
24 Wide SO
24 Wide SO
24 SSOP
24 SSOP
ERROR
(LSB)
鹵
1/2
鹵1
鹵
1/2
鹵1
鹵
1/2
鹵1
________________________Applications
Digital Signal Processing
High-Speed Data Acquisition
Telecommunications
High-Speed Servo Control
Audio Instrumentation
Ordering Information continued on last page.
__________________________________________________________Pin Configurations
TOP VIEW
AIN6 1
AIN4 1
AIN3 2
AIN2 3
AIN1 4
TP (REF OUT) 5
DB0 6
DB1 7
DB2 8
DB3 9
RD 10
INT 11
GND 12
24 V
DD
23 NC
22 A0
21 A1
AIN5 2
AIN4 3
AIN3 4
AIN2 5
AIN1 6
TP (REF OUT) 7
DB0 8
DB1 9
DB2 10
DB3 11
RD 12
INT 13
GND 14
28 AIN7
27 AIN8
26 V
DD
25 A0
MAX158
MX7828
24 A1
23 A2
22 DB7
21 DB6
20 DB5
19 DB4
18 CS
17 RDY
16 V
REF
+
15 V
REF
-
MAX154
MX7824
20 DB7
19 DB6
18 DB5
17 DB4
16 CS
15 RDY
14 V
REF
+
13 V
REF
-
DIP/SO/SSOP
DIP/SO/SSOP
( ) ARE FOR MAX154/MAX158 ONLY.
________________________________________________________________
Maxim Integrated Products
1
Call toll free 1-800-998-8800 for free samples or literature.

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