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MAX1247BCEE-T

Description
Analog to Digital Converters - ADC
CategoryAnalog mixed-signal IC    converter   
File Size340KB,25 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX1247BCEE-T Overview

Analog to Digital Converters - ADC

MAX1247BCEE-T Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerMaxim
Parts packaging codeSOIC
package instructionSSOP, SSOP16,.25
Contacts16
Reach Compliance Codenot_compliant
ECCN codeEAR99
Maximum analog input voltage1.25 V
Minimum analog input voltage-1.25 V
Maximum conversion time65 µs
Converter typeADC, SUCCESSIVE APPROXIMATION
JESD-30 codeR-PDSO-G16
JESD-609 codee0
length4.89 mm
Maximum linear error (EL)0.0244%
Humidity sensitivity level1
Number of analog input channels4
Number of digits12
Number of functions1
Number of terminals16
Maximum operating temperature70 °C
Minimum operating temperature
Output bit codeBINARY, 2\'S COMPLEMENT BINARY
Output formatSERIAL
Package body materialPLASTIC/EPOXY
encapsulated codeSSOP
Encapsulate equivalent codeSSOP16,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)240
power supply3/5 V
Certification statusNot Qualified
Sampling rate0.133 MHz
Sample and hold/Track and holdTRACK
Maximum seat height1.73 mm
Nominal supply voltage3.6 V
surface mountYES
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn85Pb15)
Terminal formGULL WING
Terminal pitch0.635 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
width3.9 mm
19-1071; Rev 2; 10/01
KIT
ATION
EVALU
BLE
AVAILA
+2.7V, Low-Power, 4-Channel,
Serial 12-Bit ADCs in QSOP-16
Features
o
4-Channel Single-Ended or 2-Channel
Differential Inputs
o
Single-Supply Operation:
+2.7V to +3.6V (MAX1246)
+2.7V to +5.25V (MAX1247)
o
Internal 2.5V Reference (MAX1246)
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)
General Description
The MAX1246/MAX1247 12-bit data-acquisition systems
combine a 4-channel multiplexer, high-bandwidth
track/hold, and serial interface with high conversion
speed and low power consumption. The MAX1246 oper-
ates from a single +2.7V to +3.6V supply; the MAX1247
operates from a single +2.7V to +5.25V supply. Both
devices’ 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 MAX1246/
MAX1247 use either the internal clock or an external seri-
al-interface clock to perform successive-approximation
analog-to-digital conversions.
The MAX1246 has an internal 2.5V reference, while the
MAX1247 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 programmed to automatically shut down at the
end of a conversion. Accessing the serial interface auto-
matically powers up the MAX1246/MAX1247, 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 MAX1246/
MAX1247 are available in a 16-pin DIP and a small QSOP
that occupies the same board area as an 8-pin SO.
For 8-channel versions of these devices, see the
MAX146/MAX147 data sheet.
MAX1246/MAX1247
Ordering Information
PART
MAX1246ACPE
MAX1246BCPE
MAX1246ACEE
MAX1246BCEE
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.
________________________Applications
Portable Data Logging
Medical Instruments
Pen Digitizers
Data Acquisition
Battery-Powered Instruments
Process Control
0V TO
+2.5V
ANALOG
INPUTS
+3V
CH0
V
DD
DGND
V
DD
0.1µF
__________Typical Operating Circuit
MAX1246
AGND
CH3
VREF
COM
CS
SCLK
DIN
REFADJ
DOUT
SSTRB
SHDN
V
SS
I/O
SCK (SK)
MOSI (SO)
MISO (SI)
CPU
4.7µF
Pin Configuration appears at end of data sheet.
0.047µF
SPI and QSPI are registered trademarks of Motorola, Inc.
MICROWIRE is a registered trademark of National
Semiconductor Corp.
________________________________________________________________
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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