MAX158BC/D Maxim Integrated, MAX158BC/D Datasheet

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MAX158BC/D

Manufacturer Part Number
MAX158BC/D
Description
Analog to Digital Converters - ADC
Manufacturer
Maxim Integrated
Datasheet

Specifications of MAX158BC/D

Number Of Channels
8
Architecture
Half-Flash
Conversion Rate
400 KSPs
Resolution
8 bit
Input Type
Single-Ended
Operating Supply Voltage
5 V
Maximum Power Dissipation
450 mW
Number Of Converters
2
Voltage Reference
2.5 V
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
19-0892; Rev 3; 12/96
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
_______________General Description
__________________________________________________________Pin Configurations
Digital Signal Processing
High-Speed Data Acquisition
Telecommunications
High-Speed Servo Control
Audio Instrumentation
TOP VIEW
REF OUT
________________________________________________________________ Maxim Integrated Products
AIN4
AIN3
AIN2
AIN1
GND
DB0
DB1
DB2
DB3
INT
RD
10
11
12
1
2
3
4
5
6
7
8
9
DIP/SO/SSOP
MAX154
CMOS High-Speed 8-Bit ADCs with
24
23
22
21
20
19
18
17
16
15
14
13
V
N.C.
A0
A1
DB7
DB6
DB4
CS
RDY
V
DB5
V
DD
REF
REF
+
-
Multiplexer and Reference
____________________________Features
Ordering Information continued at end of data sheet.
MAX154ACNG
MAX154BCNG
MAX154BC/D
MAX154ACWG
MAX154BCWG
MAX154ACAG
MAX154BCAG
______________Ordering Information
One-Chip Data Acquisition System
Four or Eight Analog Input Channels
2.5µs per Channel Conversion Time
Internal 2.5V Reference
Built-In Track/Hold Function
1 /
Single +5V Supply Operation
No External Clock
New Space-Saving SSOP Package
2
PART
LSB Error Specification
REF OUT
AIN6
AIN5
AIN4
AIN3
AIN2
AIN1
GND
DB0
DB1
DB2
DB3
INT
RD
10
11
12
13
14
1
2
3
4
5
6
7
8
9
DIP/SO/SSOP
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
MAX158
28
27
26
25
24
23
22
21
19
18
17
20
16
15
AIN7
AIN8
V
A0
A1
A2
DB6
DB5
DB4
RDY
V
V
DB7
CS
DD
REF
REF
PIN-PACKAGE
24 Narrow
Plastic DIP
24 Narrow
Plastic DIP
Dice
24 Wide SO
24 Wide SO
24 SSOP
24 SSOP
+
-
ERROR
(LSB)
±
±
±
±
±1
±1
±1
1 / 2
1 / 2
1 / 2
1 /
2
1

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MAX158BC/D Summary of contents

Page 1

... RD 10 INT 11 GND 12 DIP/SO/SSOP ________________________________________________________________ Maxim Integrated Products For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800 Multiplexer and Reference ____________________________Features One-Chip Data Acquisition System Four or Eight Analog Input Channels 2.5µs per Channel Conversion Time Internal 2.5V Reference ...

Page 2

CMOS High-Speed 8-Bit ADCs with Multiplexer and Reference ABSOLUTE MAXIMUM RATINGS Supply Voltage GND.........................................0V, +10V DD Voltage at Any Other Pins........................GND -0.3V, V Output Current (REF OUT)..................................................30mA Power Dissipation (any package) to +75°C ....................450mW Derate above +25°C by ...

Page 3

CMOS High-Speed 8-Bit ADCs with ELECTRICAL CHARACTERISTICS (continued +5V +5V GND, MODE REF+ REF- PARAMETER SYMBOL LOGIC OUTPUTS Output High Voltage V Output Low Voltage V Three-State Output Current Output Capacitance ...

Page 4

CMOS High-Speed 8-Bit ADCs with Multiplexer and Reference __________________________________________Typical Operating Characteristics (T = +25°C, unless otherwise noted.) A REFERENCE TEMPERATURE DRIFT 2.520 2.510 2.500 2.490 2.480 - 100 150 AMBIENT TEMPERATURE (°C) ACCURACY vs REF 2.0 ...

Page 5

CMOS High-Speed 8-Bit ADCs with _____________________________________________________________Pin Descriptions PIN NAME FUNCTION MAX154 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 ...

Page 6

CMOS High-Speed 8-Bit ADCs with Multiplexer and Reference _______________Detailed Description Converter Operations The MAX154/MAX158 use what is commonly called a "half-flash" conversion technique (Figure 3). Two 4-bit flash ADC converter sections are used to achieve an 8- bit result. Using ...

Page 7

CMOS High-Speed 8-Bit ADCs with RD 600ns 500ns 1000ns SETUP TIME REQUIRED V IS SAMPLED IN BY THE INTERNAL AND THE FOUR MSBs COMPARATORS PRIOR TO ARE LATCHED STARTING CONVERSION V IS TRACKED IN BY INTERNAL COMPARATORS Figure 4. Operating ...

Page 8

CMOS High-Speed 8-Bit ADCs with Multiplexer and Reference CS t CSS ANALOG ADDR CHANNEL VALID ADDRESS t AH RDY t RDY INT t ACCI DATA Figure 6. Mode 1 Timing Diagram _____________Analog Considerations Reference and Input The ...

Page 9

CMOS High-Speed 8-Bit ADCs with AIN (+) x AIN (-) x +5V 0 0.01 F Figure 8a. Internal Reference AIN (+) x AIN (-) x +5V 0 Figure 8b. Power Supply as Reference * ...

Page 10

CMOS High-Speed 8-Bit ADCs with Multiplexer and Reference Bipolar Input Operation The circuit in Figure 10a can be used for bipolar input operation. The input voltage is scaled by an amplifier so that only positive voltages appear at the ADC’s ...

Page 11

... MAX154AENG -40°C to +85° MAX154BENG -40°C to +85°C MAX154AEWG 12 RD MAX154BEWG MAX154AEAG -40°C to +85°C MAX158 MAX154BEAG MAX154AMRG DATA DB0-DB7 MAX154BMRG -55°C to +125°C MAX158ACPI MAX158BCPI 23 MAX158BC/D A2 MAX158ACWI 24 A1 MAX158BCWI 25 A0 MAX158ACAI MAX158BCAI GND 14 MAX158AEPI MAX158BEPI MAX158AEWI MAX158BEWI MAX158AEAI MAX158BEAI ...

Page 12

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 1996 Maxim Integrated Products ...

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