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MAX1266 Datasheet(Fiches technique) 1 Page - Maxim Integrated Products

Numéro de pièce MAX1266
Description  420ksps, 5V, 6-/2-Channel, 12-Bit ADCs with 2.5V Reference and Parallel Interface
Télécharger  19 Pages
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Fabricant  MAXIM [Maxim Integrated Products]
Site Internet  http://www.maxim-ic.com
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General Description
The MAX1266/MAX1268 low-power, 12-bit analog-to-
digital converters (ADCs) feature a successive-approxi-
mation ADC, automatic power-down, fast wake-up
(2µs), an on-chip clock, +2.5V internal reference, and a
high-speed 12-bit parallel interface. They operate with
a single +5V analog supply.
Power consumption is only 10mW at the maximum sam-
pling rate of 420ksps. Two software-selectable power-
down modes enable the MAX1266/MAX1268 to be shut
down between conversions; accessing the parallel
interface returns them to normal operation. Powering
down between conversions can reduce supply below
10µA at lower sampling rates.
Both devices offer software-configurable analog inputs for
unipolar/bipolar and single-ended/pseudo-differential
operation. In single-ended mode, the MAX1266 has six
input channels and the MAX1268 has two (three input
channels and one input channel, respectively, when in
pseudo-differential mode).
Excellent dynamic performance and low power, com-
bined with ease of use and small package size, make
these converters ideal for battery-powered and data-
acquisition applications or for other circuits with demand-
ing power-consumption and space requirements. The
MAX1266 is offered in a 28-pin QSOP package, while the
MAX1268 is available in a 24-pin QSOP. For pin-compati-
ble +3V, 12-bit versions, see the MAX1265/MAX1267.
Applications
Industrial Control Systems
Data Logging
Energy Management
Patient Monitoring
Data-Acquisition Systems
Touch Screens
Features
o 12-Bit Resolution, ±0.5 LSB Linearity
o Single +5V Operation
o Internal +2.5V Reference
o Software-Configurable Analog Input Multiplexer
6-Channel Single Ended/
3-Channel Pseudo-Differential (MAX1266)
2-Channel Single Ended/
1-Channel Pseudo-Differential (MAX1268)
o Software-Configurable Unipolar/Bipolar
Analog Inputs
o Low Current
2.8mA (420ksps)
1.0mA (100ksps)
400µA (10ksps)
2µA (Shutdown)
o Internal 6MHz Full-Power Bandwidth Track/Hold
o Parallel 12-Bit Interface
o Small Footprint
28-Pin QSOP (MAX1266)
24-Pin QSOP (MAX1268)
420ksps, +5V, 6-/2-Channel, 12-Bit ADCs
with +2.5V Reference and Parallel Interface
________________________________________________________________ Maxim Integrated Products
1
19-2722; Rev 0; 04/03
PART
MAX1266ACEI
MAX1266BCEI
0°C to +70°C
0°C to +70°C
TEMP RANGE
PIN-PACKAGE
28 QSOP
28 QSOP
Ordering Information
Pin Configurations
INL
(LSB)
±0.5
±1
Typical Operating Circuits appear at end of data sheet.
24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
11
12
D10
D11
VDD
REF
REFADJ
GND
COM
CH0
CH1
CS
CLK
WR
RD
INT
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
QSOP
TOP VIEW
MAX1268
Pin Configurations continued at end of data sheet.
MAX1266AEEI
-40°C to +85°C
28 QSOP
±0.5
MAX1266BEEI
-40°C to +85°C
28 QSOP
±1
MAX1268ACEG
MAX1268BCEG
MAX1268AEEG
-40°C to +85°C
0°C to +70°C
0°C to +70°C
24 QSOP
24 QSOP
24 QSOP
±0.5
MAX1268BEEG
-40°C to +85°C
24 QSOP
±1
±0.5
±1
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.




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