19-0255; Rev 2; 4/94
CMOS , Hig h -S p e e d , 8 -Bit ADCs
w it h Mu lt ip le x e r
4/MX728
_______________Ge n e ra l De s c rip t io n
____________________________Fe a t u re s
♦ One-Chip Data Acquisition System
The MAX154/MAX158 and MX7824/MX7828 are high-
s p e e d , multi-c ha nne l a na log -to-d ig ita l c onve rte rs
(ADCs). The MAX154 and MX7824 have four analog
input channels, while the MAX158 and MX7828 have
eight channels. Conversion time for all devices is 2.5µs.
The MAX154/MAX158 also feature a 2.5V on-chip refer-
ence, forming a complete high-speed data acquisition
system.
♦ Four or Eight Analog Input Channels
♦ 2.5µs per Channel Conversion Time
♦ Internal 2.5V Reference (MAX154/MAX158 only)
♦ Built-In Track/Hold Function
1
♦
/ LSB Error Specification
2
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.
♦ Single +5V Supply Operation
♦ No External Clock
♦ New Space-Saving SSOP Package
Microprocessor interfaces are simplified by the ADC’s
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.
______________Ord e rin g In fo rm a t io n
ERROR
(LSB)
PART
MX7824LN
MX7824KN
TEMP. RANGE PIN-PACKAGE
The MX7824 a nd MX7828 a re p in c omp a tib le with
Analog Devices’ AD7824 and AD7828. The MAX154
and MAX158, which feature internal references, are also
compatible with these products.
24 Narrow
0°C to +70°C
1
±
/
2
Plastic DIP
24 Narrow
0°C to +70°C
±1
1
Plastic DIP
________________________Ap p lic a t io n s
MX7824LCWG 0°C to +70°C
MX7824KCWG 0°C to +70°C
24 Wide SO
24 Wide SO
24 SSOP
±
/
2
Digital Signal Processing
High-Speed Data Acquisition
Telecommunications
High-Speed Servo Control
Audio Instrumentation
±1
1
MX7824LCAG
MX7824KCAG
0°C to +70°C
0°C to +70°C
±
/
2
24 SSOP
±1
Ordering Information continued on last page.
__________________________________________________________P in Co n fig u ra t io n s
TOP VIEW
AIN6
AIN5
AIN4
AIN3
AIN7
AIN8
V
1
2
28
27
AIN4
AIN3
AIN2
AIN1
V
1
2
24 DD
3
26 DD
NC
23
22
21
20
19
18
17
16
15
14
13
A0
25
4
A0
3
MAX158
MX7828
AIN2
AIN1
A1
5
24
A1
4
23 A2
6
MAX154
MX7824
TP (REF OUT)
DB0
DB7
DB6
DB5
DB4
CS
5
TP (REF OUT)
DB0
DB7
7
22
6
21 DB6
8
DB1
7
DB1
DB2
DB3
RD
DB5
DB4
CS
9
20
19
18
DB2
8
10
11
12
13
14
DB3
RD
9
RDY
10
11
12
17 RDY
INT
V
REF
+
INT
V
+
16
15
REF
GND
V
REF
-
GND
V
-
REF
DIP/SO/SSOP
DIP/SO/SSOP
(
) ARE FOR MAX154/MAX158 ONLY.
________________________________________________________________ Maxim Integrated Products
1
Ca ll t o ll fre e 1 -8 0 0 -9 9 8 -8 8 0 0 fo r fre e s a m p le s o r lit e ra t u re .