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MAX1248

Description
4-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP16
Categorysemiconductor    logic   
File Size240KB,24 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Download Datasheet Parametric Compare View All

MAX1248 Overview

4-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP16

MAX1248 Parametric

Parameter NameAttribute value
Maximum conversion time65 µs
Maximum linear error0.0488 %
Number of functions1
Number of terminals16
Minimum operating temperature-40 Cel
Maximum operating temperature85 Cel
Processing package description0.300 INCH, PLASTIC, MS-001AA, DIP-16
each_compliYes
stateActive
Type of converterADC, SUCCESSIVE APPROXIMATION
Analog input voltage minimum-1.25 V
Analog input voltage maximum value1.25 V
jesd_30_codeR-PDIP-T16
jesd_609_codee0
moisture_sensitivity_level1
Number of analog channels4
Number of digits10
Output bit encodingBINARY, 2'S COMPLEMENT BINARY
Output formatSERIAL
Packaging MaterialsPLASTIC/EPOXY
ckage_codeDIP
ckage_equivalence_codeDIP16,.3
packaging shapeRECTANGULAR
Package SizeIN-LINE
eak_reflow_temperature__cel_240
wer_supplies__v_3/5
qualification_statusCOMMERCIAL
Sample and hold and track and holdTRACK
Sampling Rate0.0133 MHz
seated_height_max4.57 mm
sub_categoryAnalog to Digital Converters
Rated supply voltage3 V
surface mountNO
CraftsmanshipCMOS
Temperature levelINDUSTRIAL
terminal coatingTIN LEAD
Terminal formTHROUGH-HOLE
Terminal spacing2.54 mm
Terminal locationDUAL
ime_peak_reflow_temperature_max__s_20
length19.18 mm
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.

MAX1248 Related Products

MAX1248 MAX1249 MAX1249BEEE+T
Description 4-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP16 4-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP16 IC ADC 10BIT SERIAL 16-QSOP
Maximum conversion time 65 µs 65 µs 65 µs
Number of functions 1 1 1
Number of terminals 16 16 16
Minimum operating temperature -40 Cel -40 Cel -40 °C
Maximum operating temperature 85 Cel 85 Cel 85 °C
Number of digits 10 10 10
Output format SERIAL SERIAL SERIAL
surface mount NO NO YES
Temperature level INDUSTRIAL INDUSTRIAL INDUSTRIAL
Terminal form THROUGH-HOLE THROUGH-HOLE GULL WING
Terminal location DUAL DUAL DUAL
length 19.18 mm 19.18 mm 4.9 mm
width 7.62 mm 7.62 mm 3.9 mm
Maximum linear error 0.0488 % 0.0488 % -
Processing package description 0.300 INCH, PLASTIC, MS-001AA, DIP-16 0.300 INCH, PLASTIC, MS-001AA, DIP-16 -
each_compli Yes Yes -
state Active Active -
Type of converter ADC, SUCCESSIVE APPROXIMATION ADC, SUCCESSIVE APPROXIMATION -
Analog input voltage minimum -1.25 V -1.25 V -
Analog input voltage maximum value 1.25 V 1.25 V -
jesd_30_code R-PDIP-T16 R-PDIP-T16 -
jesd_609_code e0 e0 -
moisture_sensitivity_level 1 1 -
Number of analog channels 4 4 -
Output bit encoding BINARY, 2'S COMPLEMENT BINARY BINARY, 2'S COMPLEMENT BINARY -
Packaging Materials PLASTIC/EPOXY PLASTIC/EPOXY -
ckage_code DIP DIP -
ckage_equivalence_code DIP16,.3 DIP16,.3 -
packaging shape RECTANGULAR RECTANGULAR -
Package Size IN-LINE IN-LINE -
eak_reflow_temperature__cel_ 240 240 -
wer_supplies__v_ 3/5 3/5 -
qualification_status COMMERCIAL COMMERCIAL -
Sample and hold and track and hold TRACK TRACK -
Sampling Rate 0.0133 MHz 0.0133 MHz -
seated_height_max 4.57 mm 4.57 mm -
sub_category Analog to Digital Converters Analog to Digital Converters -
Rated supply voltage 3 V 3 V -
Craftsmanship CMOS CMOS -
terminal coating TIN LEAD TIN LEAD -
Terminal spacing 2.54 mm 2.54 mm -
ime_peak_reflow_temperature_max__s_ 20 20 -
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