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PDF MAX154 Data sheet ( Hoja de datos )
| Número de pieza | MAX154 | |
| Descripción | CMOS High-Speed 8-Bit ADCs with Multiplexer and Reference | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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19-0892; Rev 3; 12/96
CMOS High-Speed 8-Bit ADCs with
Multiplexer and Reference
_______________General Description ____________________________Features
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.
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.
________________________Applications
Digital Signal Processing
High-Speed Data Acquisition
Telecommunications
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
PART
TEMP. RANGE
PIN-PACKAGE
ERROR
(LSB)
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
MAX154ACWG
MAX154BCWG
0°C to +70°C
0°C to +70°C
0°C to +70°C
Dice
24 Wide SO
24 Wide SO
±1/2
±1/2
±1
High-Speed Servo Control
Audio Instrumentation
MAX154ACAG 0°C to +70°C
MAX154BCAG 0°C to +70°C
24 SSOP
24 SSOP
±1/2
±1
Ordering Information continued at end of data sheet.
__________________________________________________________Pin Configurations
TOP VIEW
AIN4 1
AIN3 2
AIN2 3
AIN1 4
REF OUT 5
DB0 6
DB1 7
DB2 8
DB3 9
RD 10
INT 11
GND 12
MAX154
24 VDD
23 N.C.
22 A0
21 A1
20 DB7
19 DB6
18 DB5
17 DB4
16 CS
15 RDY
14 VREF+
13 VREF-
DIP/SO/SSOP
AIN6 1
AIN5 2
AIN4 3
AIN3 4
AIN2 5
AIN1 6
REF OUT 7
DB0 8
DB1 9
DB2 10
DB3 11
RD 12
INT 13
GND 14
MAX158
28 AIN7
27 AIN8
26 VDD
25 A0
24 A1
23 A2
22 DB7
21 DB6
20 DB5
19 DB4
18 CS
17 RDY
16 VREF+
15 VREF-
DIP/SO/SSOP
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
1 page  
CMOS High-Speed 8-Bit ADCs with
Multiplexer and Reference
_____________________________________________________________Pin Descriptions
PIN
MAX154
NAME
FUNCTION
PIN
MAX158
NAME
FUNCTION
1 AIN4 Analog Input Channel 4
2 AIN3 Analog Input Channel 3
3 AIN2 Analog Input Channel 2
4 AIN1 Analog Input Channel 1
5 REF OUT Reference Output (2.5V) for MAX154
6 DBO Three-State Data Output, bit 0 (LSB)
7 DB1 Three-State Data Output, bit 1
8 DB2 Three-State Data Output, bit 2
9 DB3 Three-State Data Output, bit 3
10
RD
Read Input. RD controls conversions and
data access. See Digital Interface section.
Interrupt Output. INT going low indi-
11 INT cates the completion of a conversion.
See Digital Interface section.
12 GND Ground
Lower Limit of Reference Span. Sets
13 VREF- the zero-code voltage.
Range: GND to VREF+.
Upper Limit of Reference Span. Sets
14 VREF+ the full-scale input voltage.
Range: VREF- to VDD.
Ready Output. Open-drain output with
15
RDY
no active pull-up device. Goes low
when CS goes low and high imped-
ance at the end of a conversion.
16
CS
Chip-Select Input. CS must be low for
the device to be selected.
17 DB4 Three-State Data Output, bit 4
18 DB5 Three-State Data Output, bit 5
19 DB6 Three-State Data Output, bit 6
20 DB7 Three-State Data Output, bit 7 (MSB)
21 A1 Channel Address 1 Input
22 A0 Channel Address 0 Input
23 NC No Connect
24 VDD Power-Supply Voltage, +5V
1 AIN6 Analog Input Channel 6
2 AIN5 Analog Input Channel 5
3 AIN4 Analog Input Channel 4
4 AIN3 Analog Input Channel 3
5 AIN2 Analog Input Channel 2
6 AIN1 Analog Input Channel 1
7 REF OUT Reference Output (2.5V) for MAX158
8 DB0 Three-State Data Output, bit 0 (LSB)
9 DB1 Three-State Data Output, bit 1
10 DB2 Three-State Data Output, bit 2
11 DB3 Three-State Data Output, bit 3
Read Input. RD controls conversions
12 RD and data access.
See Digital Interface section.
Interrupt Output. INT going low indi-
13 INT cates the completion of a conversion.
See Digital Interface section.
14 GND Ground
Lower Limit of Reference Span. Sets
15 VREF- the zero-code voltage.
Range: GND to VREF+.
Upper Limit of Reference Span. Sets
16 VREF+ the full-scale input voltage.
Range: VREF- to VDD.
Ready Output. Open-drain output with
17
RDY
no active pull-up device. Goes low
when CS goes low and high imped-
ance at the end of a conversion.
18
CS
Chip-Select input. C– S must be low for
the device to be selected.
19 DB4 Three-State Data Output, bit 4
20 DB5 Three-State Data Output, bit 5
21 DB6 Three-State Data Output, bit 6
22 DB7 Three-State Data Output, bit 7 (MSB)
23 A2 Channel Address 2 Input
24 A1 Channel Address 1 Input
25 A0 Channel Address 0 Input
26 VDD Power-Supply Voltage, +5V
27 AIN8 Analog Input Channel 8
28 AIN7 Analog Input Channel 7
_______________________________________________________________________________________ 5
5 Page 
CMOS High-Speed 8-Bit ADCs with
Multiplexer and Reference
SPEECH
INPUT
AMP
BANDPASS
FILTER 1
BANDPASS
FILTER 2
+5V
26
VDD
6 AIN1
5 AIN2
CS 18
RD 12
MAX158
DB0-DB7 DATA
BANDPASS
FILTER 7
28 AIN7
BANDPASS
FILTER 8
+5V
27 AIN8
16 VREF+
VREF-
15
A2 23
A1 24
A0 25
GND
14
Figure 12. Speech Analysis Using Real-Time Filtering
_Ordering Information (continued)
PART
TEMP. RANGE PIN-PACKAGE
MAX154AENG -40°C to +85°C
MAX154BENG -40°C to +85°C
MAX154AEWG -40°C to +85°C
MAX154BEWG -40°C to +85°C
MAX154AEAG -40°C to +85°C
MAX154BEAG -40°C to +85°C
MAX154AMRG -55°C to +125°C
MAX154BMRG -55°C to +125°C
MAX158ACPI 0°C to +70°C
MAX158BCPI 0°C to +70°C
MAX158BC/D 0°C to +70°C
MAX158ACWI 0°C to +70°C
MAX158BCWI 0°C to +70°C
MAX158ACAI 0°C to +70°C
MAX158BCAI 0°C to +70°C
MAX158AEPI -40°C to +70°C
MAX158BEPI -40°C to +85°C
MAX158AEWI -40°C to +85°C
MAX158BEWI -40°C to +85°C
MAX158AEAI -40°C to +85°C
MAX158BEAI -40°C to +85°C
MAX158AMJI -55°C to +125°C
MAX158BMJI -55°C to +125°C
24 Plastic DIP
24 Plastic DIP
24 Wide SO
24 Wide SO
24 SSOP
24 SSOP
24 CERDIP
24 CERDIP
28 Plastic DIP
28 Plastic DIP
Dice
28 Wide SO
28 Wide SO
28 SSOP
28 SSOP
28 Plastic DIP
28 Plastic DIP
28 Wide SO
28 Wide SO
28 SSOP
28 SSOP
28 CERDIP
28 CERDIP
ERROR
(LSB)
±1/2
±1
±1/2
±1
±1/2
±1
±1/2
±1
±1/2
±1
±1/2
±1/2
±1
±1/2
±1
±1/2
±1
±1/2
±1
±1/2
±1
±1/2
±1
+5V
24 16 10
VDD CS RD
4 AIN1
3 AIN2
2 AIN3
1 AIN4
14 VREF+
13 VREF-
12 GND
INT 11
MAX154
DB0-DB7
A1 21
A0 22
A0
A1
Figure 13. 4-Channel Fast Sample and Infinite Hold
SAMPLE
PULSE
+5V
18
VDD
+5V
15 WR
MAX506
DB0-DB7
16 A1
17 A0
VSS
3
VREF 4
VOUT A 2
VOUT B 1
VOUT C 20
VOUT D 19
DGND 6
AGND 5
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MAX154.PDF ] | |
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