19-0892; Rev 3; 12/96
CMOS High-Speed 8-Bit ADCs with
Multiplexer and 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 reference, forming a complete high-speed data acquisition
system.
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.
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.
____________________________Features
o One-Chip Data Acquisition System
o Four or Eight Analog Input Channels
o 2.5µs per Channel Conversion Time
o Internal 2.5V Reference
o Built-In Track/Hold Function
o 1/2LSB Error Specification
o Single +5V Supply Operation
o No External Clock
o New Space-Saving SSOP Package
______________Ordering Information
TEMP. RANGE
MAX154ACNG
0°C to +70°C
24 Narrow
Plastic DIP
±1/2
MAX154BCNG
0°C to +70°C
24 Narrow
Plastic DIP
±1
MAX154BC/D
0°C to +70°C
Dice
±1/2
±1/2
________________________Applications
Digital Signal Processing
High-Speed Data Acquisition
PIN-PACKAGE
ERROR
(LSB)
PART
MAX154ACWG
0°C to +70°C
24 Wide SO
Telecommunications
MAX154BCWG
0°C to +70°C
24 Wide SO
High-Speed Servo Control
MAX154ACAG
0°C to +70°C
24 SSOP
±1/2
Audio Instrumentation
MAX154BCAG
0°C to +70°C
24 SSOP
±1
±1
Ordering Information continued at end of data sheet.
__________________________________________________________Pin Configurations
TOP VIEW
AIN6 1
AIN4 1
24 VDD
AIN3 2
23 N.C.
AIN2 3
22 A0
AIN1 4
21 A1
REF OUT 5
MAX154
20 DB7
28 AIN7
AIN5 2
27 AIN8
AIN4 3
26 VDD
AIN3 4
25 A0
AIN2 5
MAX158
AIN1 6
24 A1
23 A2
19 DB6
REF OUT 7
22 DB7
DB1 7
18 DB5
DB0 8
21 DB6
DB2 8
17 DB4
DB1 9
20 DB5
16 CS
DB2 10
19 DB4
15 RDY
DB3 11
18 CS
14 VREF+
RD 12
17 RDY
13 VREF-
INT 13
16 VREF+
GND 14
15 VREF-
DB0 6
DB3 9
RD 10
INT 11
GND 12
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
MAX154/MAX158
_______________General Description