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MAX1231 fiches techniques PDF

Maxim Integrated - 12-Bit 300ksps ADCs with FIFO / Temp Sensor / Internal Reference

Numéro de référence MAX1231
Description 12-Bit 300ksps ADCs with FIFO / Temp Sensor / Internal Reference
Fabricant Maxim Integrated 
Logo Maxim Integrated 





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MAX1231 fiche technique
19-2851; Rev 1; 7/03
EVAALVUAAILTAIOBNLEKIT
12-Bit 300ksps ADCs with FIFO,
Temp Sensor, Internal Reference
General Description
The MAX1227/MAX1229/MAX1231 are serial 12-bit ana-
log-to-digital converters (ADCs) with an internal reference
and an internal temperature sensor. These devices fea-
ture on-chip FIFO, scan mode, internal clock mode, inter-
nal averaging, and AutoShutdown™. The maximum
sampling rate is 300ksps using an external clock. The
MAX1231 has 16 input channels, the MAX1229 has 12
input channels, and the MAX1227 has 8 input channels.
All input channels are configurable for single-ended or
differential inputs in unipolar or bipolar mode. All three
devices operate from a +3V supply and contain a 10MHz
SPI™/QSPI™/MICROWIRE™-compatible serial port.
The MAX1231 is available in 28-pin 5mm x 5mm QFN
with exposed pad and 24-pin QSOP packages. The
MAX1227/MAX1229 are only available in QSOP pack-
ages. All three devices are specified over the extended
-40°C to +85°C temperature range.
________________________Applications
System Supervision
Data-Acquisition Systems
Industrial Control Systems
Patient Monitoring
Data Logging
Instrumentation
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
Features
o Internal Temperature Sensor (±1°C Accuracy)
o 16-Entry First-In/First-Out (FIFO)
o Analog Multiplexer with True Differential
Track/Hold
16-, 12-, 8-Channel Single Ended
8-, 6-, 4-Channel True Differential
(Unipolar or Bipolar)
o Accuracy: ±1 LSB INL, ±1 LSB DNL, No Missing
Codes Over Temperature
o Scan Mode, Internal Averaging, and Internal Clock
o Low-Power Single +3V Operation
0.62mA at 300ksps
o Internal 2.5V Reference or External Differential
Reference
o 10MHz 3-Wire SPI/QSPI/MICROWIRE-Compatible
Interface
o Space-Saving 28-Pin 5mm x 5mm QFN Package
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX1227ACEE-T*
0°C to +70°C
16 QSOP
MAX1227AEEE-T* -40°C to +85°C
16 QSOP
*Future product—contact factory for availability.
Ordering Information continued at end of data sheet.
Pin Configurations
TOP VIEW
AIN0 1
AIN1 2
AIN2 3
AIN3 4
AIN4 5
AIN5 6
REF-/AIN6 7
CNVST/AIN7 8
MAX1227
16 EOC
15 DOUT
14 DIN
13 CS
12 SCLK
11 VDD
10 GND
9 REF+
QSOP
Pin Configurations continued at end of data sheet.
AIN0 1
AIN1 2
AIN2 3
AIN3 4
AIN4 5
AIN5 6
AIN6 7
AIN7 8
AIN8 9
AIN9 10
MAX1229
QSOP
20 EOC
19 DOUT
18 DIN
17 CS
16 SCLK
15 VDD
14 GND
13 REF+
12 CNVST/AIN11
11 REF-/AIN10
________________________________________________________________ Maxim Integrated Products 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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