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MAX1265 Datasheet(Fiches technique) 1 Page - Maxim Integrated Products

Numéro de pièce MAX1265
Description  265ksps, 3V, 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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 1 page
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General Description
The MAX1265/MAX1267 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 +2.7V to +3.6V analog supply.
Power consumption is only 5.4mW at the maximum
sampling rate of 265ksps. Two software-selectable
power-down modes enable the MAX1265/MAX1267 to
be shut down between conversions; accessing the par-
allel interface returns them to normal operation.
Powering down between conversions can reduce sup-
ply current below 10µA at lower sampling rates.
Both devices offer software-configurable analog inputs
for unipolar/bipolar and single-ended/pseudo-differen-
tial operation. In single-ended mode, the MAX1265 has
six input channels and the MAX1267 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
MAX1265 is offered in a 28-pin QSOP package, while the
MAX1267 comes in a 24-pin QSOP. For pin-compatible
+5V, 12-bit versions, refer to the MAX1266/MAX1268
data sheet.
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 +3V Single-Supply Operation
o Internal +2.5V Reference
o Software-Configurable Analog Input Multiplexer
6-Channel Single Ended/
3-Channel Pseudo Differential (MAX1265)
2-Channel Single Ended/
1-Channel Pseudo Differential (MAX1267)
o Software-Configurable Unipolar/Bipolar
Analog Inputs
o Low Current
1.9mA (265ksps)
1.0mA (100ksps)
400µA (10ksps)
2µA (Shutdown)
o Internal 3MHz Full-Power Bandwidth Track/Hold
o Parallel 12-Bit Interface
o Small Footprint
28-Pin QSOP (MAX1265)
24-Pin QSOP (MAX1267)
265ksps, +3V, 6-/2-Channel, 12-Bit ADCs
with +2.5V Reference and Parallel Interface
________________________________________________________________ Maxim Integrated Products
1
19-2721; Rev 0; 04/03
28 QSOP
±1
0°C to +70°C
MAX1265BCEI
INL
(LSB)
±0.5
28 QSOP
PIN-PACKAGE
TEMP RANGE
0°C to +70°C
MAX1265ACEI
PART
Ordering Information
Pin Configurations
Typical Operating Circuits appear at end of data sheet.
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
D10
D11
VDD
REF
REFADJ
GND
CS
COM
CH0
CH1
CH2
CH3
CH4
CH5
CLK
WR
RD
INT
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
QSOP
TOP VIEW
MAX1265
Pin Configurations continued at end of data sheet.
28 QSOP
±0.5
-40°C to +85°C
MAX1265AEEI
28 QSOP
±1
-40°C to +85°C
MAX1265BEEI
24 QSOP
±0.5
-40°C to +85°C
MAX1267AEEG
24 QSOP
±1
-40°C to +85°C
MAX1267BEEG
24 QSOP
±1
0°C to +70°C
MAX1267BCEG
±0.5
24 QSOP
0°C to +70°C
MAX1267ACEG
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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