19-0892; Rev 3; 12/96
CMOS Hig h -S p e e d 8 -Bit ADCs w it h
Mu lt ip le x e r a n d Re fe re n c e
4/MAX158
_______________Ge n e ra l De s c rip t io n
____________________________Fe a t u re s
♦ One-Chip Data Acquisition System
♦ Four or Eight Analog Input Channels
♦ 2.5µs per Channel Conversion Time
♦ Internal 2.5V Reference
The MAX154/MAX158 are high-speed multi-channel
analog-to-digital converters (ADCs). The MAX154 has
four analog input channels while the MAX158 has eight
channels. Conversion time for both devices is 2.5µs.
The MAX154/MAX158 also feature a 2.5V on-chip refer-
ence, forming a complete high-speed data acquisition
system.
♦ Built-In Track/Hold Function
1
♦ / LSB Error Specification
2
Both converters include a built-in track/hold, eliminating
the need for an external track/hold. 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
TEMP. RANGE PIN-PACKAGE
24 Narrow
0°C to +70°C
1
MAX154ACNG
±
/
2
Plastic DIP
________________________Ap p lic a t io n s
Digital Signal Processing
24 Narrow
0°C to +70°C
MAX154BCNG
MAX154BC/D
±1
1
Plastic DIP
0°C to +70°C
Dice
±
/
/
2
High-Speed Data Acquisition
Telecommunications
1
±
MAX154ACWG 0°C to +70°C
MAX154BCWG 0°C to +70°C
24 Wide SO
24 Wide SO
24 SSOP
24 SSOP
2
±1
1
MAX154ACAG
MAX154BCAG
0°C to +70°C
0°C to +70°C
±
/
High-Speed Servo Control
2
±1
Audio Instrumentation
Ordering Information continued at end of data sheet.
__________________________________________________________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
N.C.
23
A0
25
4
A0
22
3
MAX158
AIN2
AIN1
A1
5
24
A1
21
4
23 A2
6
MAX154
REF OUT
DB0
DB7
DB6
DB5
DB4
CS
5
20
19
18
17
16
15
14
13
REF OUT
DB0
DB7
7
22
6
21 DB6
8
DB1
7
DB1
DB2
DB3
RD
DB5
DB4
CS
9
20
19
18
17
DB2
8
10
11
12
13
14
DB3
RD
9
RDY
10
11
12
RDY
INT
V
REF
+
INT
V
+
16
15
REF
GND
V
REF
-
GND
V
-
REF
DIP/SO/SSOP
DIP/SO/SSOP
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800