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MAX1273CPA Datasheet(PDF) 1 Page - Maxim Integrated Products

Part # MAX1273CPA
Description  Fault-Protected, 12-Bit ADCs with Software-Selectable Input Range
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX1273CPA Datasheet(HTML) 1 Page - Maxim Integrated Products

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General Description
The MAX1272/MAX1273 multirange 12-bit data-acquisi-
tion systems (DAS) operate with a single 5V supply. The
software-programmable analog input accepts a variety
of voltage ranges: ±10V, ±5V, 0 to 10V, 0 to 5V for the
MAX1272; ±VREF, ±VREF / 2, 0 to VREF, 0 to VREF / 2 for
the MAX1273. The software-selectable extended analog
input range increases the effective dynamic range to 14
bits and provides the flexibility to interface 4–20mA pow-
ered sensors directly to a single 5V system. In addition,
the MAX1272 provides fault protection to ±12V. Other
features include a 5MHz track/hold (T/H) bandwidth,
87ksps throughput rate, and internal (4.096V) or external
(2.40V to 4.18V) reference.
The MAX1272/MAX1273 serial interfaces connect
directly to SPI™/QSPI™/MICROWIRE™-compatible
devices without any external logic.
Four software-programmable power-down modes
(delayed standby, immediate standby, delayed full power-
down, and immediate full power-down) provide low-cur-
rent shutdown between conversions. In standby mode, the
internal reference buffer remains active, thus eliminating
startup delay.
The MAX1272/MAX1273 are available in 8-pin PDIP
and µMAX packages. Both devices are available in the
commercial (0°C to +70°C) or extended (-40°C to
+85°C) temperature range.
Applications
Industrial Control Systems
Data-Acquisition Systems
Robotics
Automatic Testing
Battery-Powered Instruments
Medical Instruments
Features
o Four Software-Selectable Input Ranges
MAX1272: 0 to 10V, 0 to 5V, ±10V, ±5V
MAX1273: 0 to VREF, 0 to VREF / 2, ±VREF,
±VREF / 2
o 12-Bit Resolution, No Missing Codes
o 5V Single-Supply Operation
o SPI/QSPI/MICROWIRE-Compatible 3-Wire
Interface
o 87ksps Sampling Rate
o ±12V Fault-Protected Analog Input (MAX1272)
o Internal (4.096V) or External (2.4V to 4.18V)
Reference
o Low Power
1.5mA at 87ksps
0.4mA at 10ksps
0.2mA at 1ksps
o Four Power-Down Modes
o 8-Pin µMAX and PDIP Packages
Fault-Protected, 12-Bit ADCs
with Software-Selectable Input Range
________________________________________________________________ Maxim Integrated Products
1
REF
AIN
GND
1
2
8
7
DOUT
CS
DIN
VDD
SCLK
PDIP/
µMAX
TOP VIEW
3
4
6
5
MAX1272
MAX1273
Pin Configuration
Ordering Information
19-2921; Rev 1; 12/03
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
PART
TEMP
RANGE
PIN-
PACKAGE
INL
(LSB)
MAX1272CPA
0
°C to +70°C
8 Plastic DIP
±
1
MAX1272CUA
0
°C to +70°C
8 µMAX
±
1
MAX1272EPA
-40
°C to +85°C
8 Plastic DIP
±
1
MAX1272EUA
-40
°C to +85°C
8 µMAX
±
1
MAX1273CPA
0
°C to +70°C
8 Plastic DIP
±
1
MAX1273CUA
0
°C to +70°C
8 µMAX
±
1
MAX1273EPA
-40
°C to +85°C
8 Plastic DIP
±
1
MAX1273EUA
-40
°C to +85°C
8 µMAX
±
1
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
Typical Application Circuit appears at end of data sheet.


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