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Maxim Integrated - Serial 10-Bit ADCs

Numéro de référence MAX1085
Description Serial 10-Bit ADCs
Fabricant Maxim Integrated 
Logo Maxim Integrated 





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MAX1085 fiche technique
19-1686; Rev 1; 12/10
400ksps/300ksps, Single-Supply, Low-Power,
Serial 10-Bit ADCs with Internal Reference
General Description
The MAX1084/MAX1085 10-bit analog-to-digital convert-
ers (ADCs) combine a high-bandwidth track/hold, a serial
interface with high conversion speed, an internal +2.5V
reference, and low power consumption. The MAX1084
operates from a single +4.5V to +5.5V supply; the
MAX1085 operates from a single +2.7V to +3.6V supply.
The 3-wire serial interface connects directly to
SPI™/QSPI™/MICROWIRE™ devices without external
logic. The devices use an external serial-interface clock to
perform successive-approximation analog-to-digital con-
versions.
Low power combined with ease of use and small pack-
age size make these converters ideal for remote-sensor
and data-acquisition applications, or for other circuits with
demanding power consumption and space requirements.
The MAX1084/MAX1085 are available in 8-pin SO
packages.
These devices are pin-compatible, higher-speed versions
of the MAX1242/MAX1243; for more information, refer to
the respective data sheets.
Applications
Portable Data Logging
Data Acquisition
Medical Instruments
Battery-Powered Instruments
Pen Digitizers
Process Control
Pin Configuration
Features
Single-Supply Operation
+4.5V to +5.5V (MAX1084)
+2.7V to +3.6V (MAX1085)
10-Bit Resolution
400ksps Sampling Rate (MAX1084)
Internal Track/Hold
Internal +2.5V Reference
Low Power: 2.5mA (400ksps)
SPI/QSPI/MICROWIRE 3-Wire Serial Interface
Pin-Compatible, High-Speed Upgrade to
MAX1242/MAX1243
8-Pin SO Package
Ordering Information
PART
TEMP
RANGE
PIN-
PACKAGE
MAX1084ACSA+ 0°C to +70°C 8 SO
MAX1084BCSA+ 0°C to +70°C 8 SO
MAX1084AESA+ -40°C to +85°C 8 SO
MAX1084BESA+ -40°C to +85°C 8 SO
MAX1085ACSA+ 0°C to +70°C 8 SO
MAX1085BCSA+ 0°C to +70°C 8 SO
MAX1085AESA+ -40°C to +85°C 8 SO
MAX1085BESA+ -40°C to +85°C 8 SO
+Denotes a lead(Pb)-free/RoHS-compliant package.
INL
(LSB)
±1/2
±1
±1/2
±1
±1/2
±1
±1/2
±1
Functional Diagram
TOP VIEW
+
VDD 1
AIN 2
SHDN 3
REF 4
MAX1084
MAX1085
8 SCLK
7 CS
6 DOUT
5 GND
SO
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
CS
SCLK
7
8
SHDN 3
AIN 2
4
REF
VDD
1
CONTROL
LOGIC
T/H
2.5V
REFERENCE
INT
CLOCK
10-BIT
SAR
OUTPUT
SHIFT
REGISTER
6 DOUT
MAX1084
MAX1085
5
GND
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.

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