5962-8876402LA Maxim Integrated Products, 5962-8876402LA Datasheet

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5962-8876402LA

Manufacturer Part Number
5962-8876402LA
Description
ADC Single Semiflash 400KSPS 8-Bit Parallel 24-Pin CDIP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of 5962-8876402LA

Package
24CDIP
Resolution
8 Bit
Sampling Rate
400 KSPS
Architecture
Semiflash
Number Of Adcs
1
Number Of Analog Inputs
4
Digital Interface Type
Parallel
Input Type
Voltage
Polarity Of Input Voltage
Unipolar

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5962-8876402LA(AD7824UQ/883B)
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The MAX154/MAX158 and MX7824/MX7828 are high-
speed, multi-channel analog-to-digital converters
(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.
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.
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.
The MX7824 and MX7828 are pin compatible with
Analog Devices’ AD7824 and AD7828. The MAX154
and MAX158, which feature internal references, are also
compatible with these products.
________________________Applications
19-0255; Rev 2; 4/94
Call toll free 1-800-998-8800 for free samples or literature.
_______________General Description
__________________________________________________________Pin Configurations
Digital Signal Processing
High-Speed Data Acquisition
Telecommunications
High-Speed Servo Control
Audio Instrumentation
TOP VIEW
( ) ARE FOR MAX154/MAX158 ONLY.
________________________________________________________________ Maxim Integrated Products
TP (REF OUT)
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
MX7824
CMOS, High-Speed, 8-Bit ADCs
24
23
22
21
20
19
18
17
16
15
14
13
V
NC
A0
A1
DB7
DB6
DB4
CS
RDY
V
DB5
V
DD
REF
REF
+
-
____________________________Features
Ordering Information continued on last page.
MX7824LN
MX7824KN
MX7824LCWG
MX7824KCWG
MX7824LCAG
MX7824KCAG
______________Ordering Information
One-Chip 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 /
Single +5V Supply Operation
No External Clock
New Space-Saving SSOP Package
2
PART
TP (REF OUT)
LSB Error Specification
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
with Multiplexer
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
MX7828
27
28
26
25
24
23
22
21
20
19
18
17
16
15
AIN7
AIN8
V
A0
A1
A2
DB7
DB6
DB5
DB4
CS
RDY
V
V
DD
REF
REF
PIN-PACKAGE
24 Narrow
Plastic DIP
24 Narrow
Plastic DIP
24 Wide SO
24 Wide SO
24 SSOP
24 SSOP
+
-
ERROR
(LSB)
±
±
±
±1
±1
±1
1 /
1 /
1 /
2
2
2
1

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5962-8876402LA Summary of contents

Page 1

... INT 11 GND 12 DIP/SO/SSOP ( ) ARE FOR MAX154/MAX158 ONLY. ________________________________________________________________ Maxim Integrated Products Call toll free 1-800-998-8800 for free samples or literature. CMOS, High-Speed, 8-Bit ADCs with Multiplexer ____________________________Features One-Chip Data Acquisition System Four or Eight Analog Input Channels 2.5µs per Channel Conversion Time Internal 2 ...

Page 2

CMOS, High-Speed, 8-Bit ADCs with Multiplexer ABSOLUTE MAXIMUM RATINGS Supply Voltage, VDD to GND ........................................0V, +10V 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 ..............................................6mW/°C ...

Page 3

ELECTRICAL CHARACTERISTICS (V = +5V +5V GND, Mode REF REF PARAMETER SYMBOL LOGIC OUTPUTS Output High Voltage V OH Output Low Voltage V OL Three-State Output Current Output Capacitance (Note 4) ...

Page 4

CMOS, High-Speed, 8-Bit ADCs with Multiplexer __________________________________________Typical Operating Characteristics (T = +25°C, unless otherwise noted.) A REFERENCE TEMPERATURE DRIFT (MAX154/MAX158 ONLY) 2.520 2.510 2.500 2.490 2.480 - 100 150 AMBIENT TEMPERATURE (°C) ACCURACY vs ...

Page 5

Descriptions PIN NAME FUNCTION MAX154 MX7824 1 AIN4 Analog Input Channel 4 2 AIN3 Analog Input Channel 3 3 AIN2 Analog Input Channel 2 4 AIN1 Analog Input Channel 1 REF OUT Reference Output (2.5V) for MAX154 ...

Page 6

CMOS, High-Speed, 8-Bit ADCs with Multiplexer _______________Detailed Description Converter Operation The MAX154/MAX158 and MX7824/MX7828 use what is commonly called a “half-flash” conversion technique (Figure 3). Two 4-bit flash ADC sections are used to achieve an 8-bit result. Using 15 comparators, ...

Page 7

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 Sequence does not require microprocessor ...

Page 8

CMOS, High-Speed, 8-Bit ADCs with Multiplexer 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

AIN (+) V x AIN (-) GND x +5V V REF OUT 0 0. Figure 8a. Internal Reference (MAX154/MAX158 only) AIN (+) V x GND AIN (-) x +5V V 2.5V V 0.1 F ...

Page 10

CMOS, High-Speed, 8-Bit ADCs with Multiplexer f permits a maximum sampling rate of 50kHz per MAX channel when using the MAX158/MX7828 and 100kHz per channel when using the MAX154/MX7824. These rates are well above the Nyquist requirement of 20kHz sampling ...

Page 11

A15 ADDRESS BUS A0 ADDRESS EN DECODE MREQ 5V ZBO 5k WAIT RD DATA BUS D0–D7 *A2 ON MAX158/MX7828 ONLY. Figure 11. Simple Mode 0 Interface + AIN1 3 AIN2 2 AIN3 MAX154 MX7824 ...

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 © 1995 Maxim Integrated Products ...

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