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MAX1266ACEI Datasheet

  • MAX1266ACEI

  • 420ksps, +5V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference...

  • 389.36KB

  • 19页

  • MAXIM

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19-2722; Rev 0; 04/03
420ksps, +5V, 6-/2-Channel, 12-Bit ADCs
with +2.5V Reference and Parallel Interface
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
(2碌s), 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
10碌A 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.
o
12-Bit Resolution, 卤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)
400碌A (10ksps)
2碌A (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)
Features
MAX1266/MAX1268
Pin Configurations
TOP VIEW
Applications
Industrial Control Systems
Energy Management
Data-Acquisition Systems
Data Logging
Patient Monitoring
Touch Screens
D9 1
D8 2
D7 3
D6 4
D5 5
24 D10
23 D11
22 V
DD
21 REF
20 REFADJ
Ordering Information
PART
MAX1266ACEI
MAX1266BCEI
MAX1266AEEI
MAX1266BEEI
MAX1268ACEG
MAX1268BCEG
TEMP RANGE
0掳C to +70掳C
0掳C to +70掳C
-40掳C to +85掳C
-40掳C to +85掳C
0掳C to +70掳C
0掳C to +70掳C
PIN-PACKAGE
28 QSOP
28 QSOP
28 QSOP
28 QSOP
24 QSOP
24 QSOP
24 QSOP
24 QSOP
INL
(LSB)
卤0.5
卤1
卤0.5
卤1
卤0.5
卤1
卤0.5
卤1
D4 6
D3 7
D2 8
D1 9
D0 10
INT 11
RD 12
MAX1268
19 GND
18 COM
17 CH0
16 CH1
15 CS
14 CLK
13 WR
QSOP
Pin Configurations continued at end of data sheet.
Typical Operating Circuits appear at end of data sheet.
MAX1268AEEG -40掳C to +85掳C
MAX1268BEEG -40掳C to +85掳C
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.

MAX1266ACEI 产品属性

  • Maxim Integrated Products

  • 1

  • 6

  • SAR

  • 420 KSPs

  • 12 bit

  • Single Ended, Differential

  • Parallel

  • 70 dB

  • 2.5 V

  • 6 V

  • - 0.3 V

  • 667 mW

  • + 70 C

  • QSOP-28

  • 0 C

  • 5 V

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