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MAX191ACNG

Description
Analog to Digital Converters - ADC Low-Power, 12-Bit Sampling ADC with Internal Reference and Power-Down
CategoryAnalog mixed-signal IC    converter   
File Size225KB,24 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX191ACNG Overview

Analog to Digital Converters - ADC Low-Power, 12-Bit Sampling ADC with Internal Reference and Power-Down

MAX191ACNG Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerMaxim
Parts packaging codeDIP
package instructionPLASTIC, DIP-24
Contacts24
Reach Compliance Codenot_compliant
ECCN codeEAR99
Maximum analog input voltage5.25 V
Minimum analog input voltage-5.25 V
Maximum conversion time18 µs
Converter typeADC, SUCCESSIVE APPROXIMATION
JESD-30 codeR-PDIP-T24
JESD-609 codee0
length30.545 mm
Maximum linear error (EL)0.0244%
Humidity sensitivity level1
Nominal negative supply voltage-5 V
Number of analog input channels1
Number of digits12
Number of functions1
Number of terminals24
Maximum operating temperature70 °C
Minimum operating temperature
Output bit codeBINARY
Output formatSERIAL, PARALLEL, 8 BITS
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Encapsulate equivalent codeDIP24,.3
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)240
power supply5,GND/-5 V
Certification statusNot Qualified
Sampling rate0.1 MHz
Sample and hold/Track and holdTRACK
Maximum seat height4.572 mm
Nominal supply voltage5 V
surface mountNO
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn85Pb15)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
width7.62 mm
19-4506; Rev 4; 2/97
UAL
IT MAN
TION K
A
SHEET
EVALU
S DATA
W
FOLLO
Low-Power, 12-Bit Sampling ADC
with Internal Reference and Power-Down
General Description
____________________________Features
o
o
o
o
o
12-Bit Resolution, 1/2LSB Linearity
+5V or ±5V Operation
Built-In Track/Hold
Internal Reference with Adjustment Capability
Low Power: 3mA Operating Mode
20µA Power-Down Mode
o
100ksps Tested Sampling Rate
o
Serial and 8-Bit Parallel µP Interface
o
24-Pin Narrow DIP and Wide SO Packages
MAX191
The MAX191 is a monolithic, CMOS, 12-bit analog-to-
digital converter (ADC) featuring differential inputs,
track/hold (T/H), internal voltage reference, internal or
external clock, and parallel or serial µP interface. The
MAX191 has a 7.5µs conversion time, a 2µs acquisition
time, and a guaranteed 100ksps sample rate.
The MAX191 operates from a single +5V supply or from
dual ±5V supplies, allowing ground-referenced bipolar
input signals. The device features a logic power-down
input, which reduces the 3mA V
DD
supply current to
50µA max, including the internal-reference current.
Decoupling capacitors are the only external compo-
nents needed for the power supply and reference. This
ADC operates with either an external reference, or an
internal reference that features an adjustment input for
trimming system gain errors.
The MAX191 provides three interface modes: two 8-bit
parallel modes, and a serial interface mode that is com-
patible with SPI
TM
, QSPI
TM
, and MICROWIRE
TM
serial-
interface standards.
Ordering Information
PART
MAX191ACNG
MAX191BCNG
MAX191ACWG
MAX191BCWG
MAX191BC/D
MAX191AENG
MAX191BENG
MAX191AEWG
MAX191BEWG
MAX191AMRG
MAX191BMRG
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
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
-55°C to +125°C
PIN-PACKAGE
24 Narrow Plastic DIP
24 Narrow Plastic DIP
24 Wide SO
24 Wide SO
Dice*
24 Narrow Plastic DIP
24 Narrow Plastic DIP
24 Wide SO
24 Wide SO
24 Narrow CERDIP**
24 Narrow CERDIP**
ERROR
(LSB)
±1/2
±1
±1/2
±1
±1
±1/2
±1
±1/2
±1
±1/2
±1
________________________Applications
Battery-Powered Data Logging
PC Pen Digitizers
High-Accuracy Process Control
Electromechanical Systems
Data-Acquisition Boards for PCs
Automatic Testing Systems
Telecommunications
Digital Signal Processing (DSP)
* Dice are specified at T
A
= +25°C, DC parameters only.
** Contact factory for availability and processing to MIL-STD-883.
Pin Configuration
TOP VIEW
PD
1
24
V
DD
23
CLK/SCLK
22
PAR
21
HBEN
Functional Diagram
V
DD
24
5
VREF
6
REFADJ
CLK/SCLK
23
OSC
3-STATE
OUTPUT
8-BIT
BUS
AND
SERIAL
I/O
18
17
16
15
14
13
11
10
D7/DOUT
D6/SCLK
OUT
D5/SSTRB
D4
D3/D11
D2/D10
D1/D9
D0/D8
V
SS
2
AIN+
3
AIN-
4
VREF
5
REFADJ
6
AGND
7
BIP
8
BUSY
9
MAX191
20
CS
19
RD
18
D7/DOUT
17
D6/SCLK
OUT
16
D5/SSTRB
15
D4
14
D3/D11
13
D2/D10
2.46V
REF
12
AIN +
AIN -
3
4
MAX191
7
AGND
12
DGND
IN REF OUT
12-BIT
SAR ADC
2
V
SS
CONTROL
LOGIC
1 22 8
BIP
PD
PAR
20
19
9
21
CS
RD
BUSY
HBEN
D0/D8
10
D1/D9
11
DGND
12
DIP/SO
SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp.
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.

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Product Category - Analog to Digital Converters - ADC - Analog to Digital Converters - ADC Analog to Digital Converters - ADC - Analog to Digital Converters - ADC - Analog to Digital Converters - ADC
Manufacturer - Maxim - Maxim Maxim - Maxim - Maxim
Number of Channels - 1 Channel - 1 Channel 1 Channel - 1 Channel - 1 Channel
Sampling Rate - 100 kS/s - 100 kS/s 100 kS/s - 100 kS/s - 100 kS/s
Input Type - Differential - Differential Differential - Differential - Differential
Interface Type - Parallel, Serial, SPI - Parallel, Serial, SPI Serial - Parallel, Serial, SPI - Parallel, Serial, SPI
Architecture - SAR - SAR SAR - SAR - SAR
Number of Converters - 1 Converter - 1 Converter 1 Converter - 1 Converter - 1 Converter
Operating Supply Voltage - +/- 5 V, + 5 V - +/- 5 V, + 5 V +/- 5 V, + 5 V - +/- 5 V, + 5 V - +/- 5 V, + 5 V
Pd - Power Dissipation - 1067 mW - 1067 mW 1067 mW - 1067 mW - 1067 mW
Product - Analog to Digital Converters - Analog to Digital Converters Analog to Digital Converters - Analog to Digital Converters - Analog to Digital Converters
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