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MAX1249AMJE

Description
Analog to Digital Converters - ADC
CategoryAnalog mixed-signal IC    converter   
File Size240KB,24 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX1249AMJE Overview

Analog to Digital Converters - ADC

MAX1249AMJE Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerMaxim
Parts packaging codeDIP
package instruction0.300 INCH, CERDIP-16
Contacts16
Reach Compliance Codenot_compliant
ECCN code3A001.A.2.C
Maximum analog input voltage1.25 V
Minimum analog input voltage-1.25 V
Maximum conversion time65 µs
Converter typeADC, SUCCESSIVE APPROXIMATION
JESD-30 codeR-GDIP-T16
JESD-609 codee0
Maximum linear error (EL)0.0488%
Humidity sensitivity level1
Number of analog input channels4
Number of digits10
Number of functions1
Number of terminals16
Maximum operating temperature125 °C
Minimum operating temperature-55 °C
Output bit codeBINARY, 2\'S COMPLEMENT BINARY
Output formatSERIAL
Package body materialCERAMIC, GLASS-SEALED
encapsulated codeDIP
Encapsulate equivalent codeDIP16,.3
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)240
power supply3/5 V
Certification statusNot Qualified
Sampling rate0.0133 MHz
Sample and hold/Track and holdTRACK
Maximum seat height5.08 mm
Nominal supply voltage3 V
surface mountNO
technologyCMOS
Temperature levelMILITARY
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
width7.62 mm
19-1072; Rev 2; 5/98
+2.7V to +5.25V, Low-Power, 4-Channel,
Serial 10-Bit ADCs in QSOP-16
_______________General
Description
The MAX1248/MAX1249 10-bit data-acquisition sys-
tems combine a 4-channel multiplexer, high-bandwidth
track/hold, and serial interface with high conversion
speed and low power consumption. They operate from
a single +2.7V to +5.25V supply, and their analog
inputs are software configurable for unipolar/bipolar
and single-ended/differential operation.
The 4-wire serial interface connects directly to SPI™/
QSPI™ and MICROWIRE™ devices without external
logic. A serial strobe output allows direct connection
to TMS320-family digital signal processors. The
MAX1248/MAX1249 use either the internal clock or an
external serial-interface clock to perform successive-
approximation analog-to-digital conversions.
The MAX1248 has an internal 2.5V reference, while the
MAX1249 requires an external reference. Both parts
have a reference-buffer amplifier with a ±1.5% voltage
adjustment range.
These devices provide a hard-wired
SHDN
pin and a
software-selectable power-down, and can be pro-
grammed to automatically shut down at the end of a
conversion. Accessing the serial interface automatically
powers up the MAX1248/MAX1249, and the quick
turn-on time allows them to be shut down between all
conversions. This technique can cut supply current to
under 60µA at reduced sampling rates.
The MAX1248/MAX1249 are available in a 16-pin DIP
and a very small QSOP that occupies the same board
area as an 8-pin SO.
For 8-channel versions of these devices, see the
MAX148/MAX149 data sheet.
____________________________Features
o
4-Channel Single-Ended or 2-Channel
Differential Inputs
o
Single +2.7V to +5.25V Operation
o
Internal 2.5V Reference (MAX1248)
o
Low Power: 1.2mA (133ksps, +3V supply)
54µA (1ksps, +3V supply)
1µA (power-down mode)
o
SPI/QSPI/MICROWIRE/TMS320-Compatible
4-Wire Serial Interface
o
Software-Configurable Unipolar or Bipolar Inputs
o
16-Pin QSOP Package (same area as 8-pin SO)
MAX1248/MAX1249
_____________Ordering
Information
PART
MAX1248ACPE
MAX1248BCPE
MAX1248ACEE
MAX1248BCEE
Contact
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
16 Plastic DIP
16 Plastic DIP
16 QSOP
16 QSOP
INL
(LSB)
±1/2
±1
±1/2
±1
Ordering Information continued at end of data sheet.
factory for availability of alternate surface-mount
packages.
________________________Applications
Portable Data Logging
Medical Instruments
Pen Digitizers
Data Acquisition
Battery-Powered Instruments
System Supervision
__________Typical Operating Circuit
+3V
CH0
0V TO
+2.5V
ANALOG
INPUTS
V
DD
DGND
C3
0.1µF
V
DD
MAX1248
AGND
CH3
COM
CS
SCLK
VREF
I/O
SCK (SK)
MOSI (SO)
MISO (SI)
V
SS
CPU
Pin Configuration appears at end of data sheet.
C1
4.7µF
REFADJ
C2
0.01µF
DIN
DOUT
SSTRB
SHDN
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
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