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MAX1402EAI-W

Description
Analog to Digital Converters - ADC +5V, 18-Bit, Low-Power, Multichannel, Oversampling (Sigma-Delta) ADC
Categorysemiconductor    Analog mixed-signal IC   
File Size550KB,38 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX1402EAI-W Overview

Analog to Digital Converters - ADC +5V, 18-Bit, Low-Power, Multichannel, Oversampling (Sigma-Delta) ADC

MAX1402EAI-W Parametric

Parameter NameAttribute value
Product AttributeAttribute Value
ManufacturerMaxim
Product CategoryAnalog to Digital Converters - ADC
Mounting StyleSMD/SMT
Package / CaseSSOP-28
Resolution18 bit
Number of Channels5 Channel
Sampling Rate4.8 kS/s
Interface TypeSerial, 3-Wire, SPI
ArchitectureSigma-Delta
SNR - Signal to Noise Ratio-
Minimum Operating Temperature- 40 C
Maximum Operating Temperature+ 85 C
ProductAnalog to Digital Converters
NumOfPackaging1
Pd - Power Dissipation524 mW
Reference Voltage2.5 V
Supply Voltage - Max5.25 V
Supply Voltage - Min2.7 V
Unit Weight0.080001 oz
19-1423; Rev 2; 1/07
IT
TION K
VALUA
E
BLE
AVAILA
+5V, 18-Bit, Low-Power, Multichannel,
Oversampling (Sigma-Delta) ADC
General Description
Features
18-Bit Resolution, Sigma-Delta ADC
16-Bit Accuracy with No Missing Codes to 480sps
Low Quiescent Current
250µA (operating mode)
2µA (power-down mode)
Matched On-Board Current Sources (200µA) for
Sensor Excitation
3 Fully Differential or 5 Pseudo-Differential Signal
Input Channels
2 Additional, Fully Differential Calibration
Channels/Auxiliary Input Channels
Programmable Gain and Offset
Fully Differential Reference Inputs
Converts Continuously or On Command
Automatic Channel Scanning and Continuous
Data Output Mode
Operates with +5V Analog Supply and +3V or +5V
Digital Supply
3-Wire Serial Interface—SPI™/QSPI™ Compatible
28-Pin SSOP Package
MAX1402
The MAX1402 low-power, multichannel, serial-output
analog-to-digital converter (ADC) features matched
200µA current sources for sensor excitation. This ADC
uses a sigma-delta modulator with a digital decimation
filter to achieve 16-bit accuracy. The digital filter’s user-
selectable decimation factor allows the conversion res-
olution to be reduced in exchange for a higher output
data rate. True 16-bit performance is achieved at an
output data rate of up to 480sps. In addition, the modu-
lator sampling frequency may be optimized for either
lowest power dissipation or highest throughput rate.
The MAX1402 operates from a +5V supply.
This device offers three fully differential input channels
that may be independently programmed with a gain
between +1V/V and +128V/V. Furthermore, it can com-
pensate an input-referred DC offset up to 117% of the
selected full-scale range. These three differential chan-
nels may also be configured to operate as five pseudo-
differential input channels. Two additional, fully
differential system-calibration channels are provided for
gain and offset error correction.
The MAX1402 may be configured to sequentially scan all
signal inputs and provide the results via the serial inter-
face with minimum communications overhead. When
used with a 2.4576MHz or 1.024MHz master clock, the
digital decimation filter can be programmed to produce
zeros in its frequency response at the line frequency and
associated harmonics, ensuring excellent line rejection
without the need for further post-filtering.
The MAX1402 is available in a 28-pin SSOP package.
Pin Configuration
TOP VIEW
CLKIN 1
28 SCLK
27 DIN
26 DOUT
25 INT
24 V
DD
Applications
Portable Industrial Instruments
Portable Weigh Scales
Loop-Powered Systems
Pressure Transducers
CLKOUT 2
CS 3
RESET 4
MUXOUT+ 5
MUXOUT- 6
OUT2 7
OUT1 8
MAX1402
23 DGND
22 CALOFF+
21 CALOFF-
20 REFIN+
19 REFIN-
18 CALGAIN+
17 CALGAIN-
16 AIN6
15 AIN5
Ordering Information
PART
MAX1402CAI
MAX1402EAI
TEMP RANGE
0°C to +70°C
-40°C to +85°C
PIN-
PACKAGE
28 SSOP
28 SSOP
PKG
CODE
A28-2
A28-2
AGND 9
V+ 10
AIN1 11
AIN2 12
AIN3 13
AIN4 14
SPI and QSPI are trademarks of Motorola, Inc.
SSOP
________________________________________________________________
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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Description Analog to Digital Converters - ADC +5V, 18-Bit, Low-Power, Multichannel, Oversampling (Sigma-Delta) ADC Analog to Digital Converters - ADC 18-Bit 5Ch 4.8ksps 2.5V Precision ADC Analog to Digital Converters - ADC Analog to Digital Converters - ADC +5V, 18-Bit, Low-Power, Multichannel, Oversampling (Sigma-Delta) ADC Analog to Digital Converters - ADC 18-Bit 5Ch 4.8ksps 2.5V Precision ADC Analog to Digital Converters - ADC +5V, 18-Bit, Low-Power, Multichannel, Oversampling (Sigma-Delta) ADC
Is it lead-free? - - Contains lead Contains lead Lead free Contains lead
Is it Rohs certified? - - incompatible incompatible conform to incompatible
Maker - - Maxim Maxim Maxim Maxim
Parts packaging code - - SSOP SSOP SSOP SSOP
package instruction - - 5.30 MM, SSOP-28 5.30 MM, SSOP-28 SSOP, SSOP28,.3 5.30 MM, SSOP-28
Contacts - - 28 28 28 28
Reach Compliance Code - - not_compliant not_compliant compliant not_compliant
ECCN code - - EAR99 EAR99 EAR99 EAR99
Maximum analog input voltage - - 2.5 V 2.5 V 2.5 V 2.5 V
Minimum analog input voltage - - -2.5 V -2.5 V -2.5 V -2.5 V
Converter type - - ADC, DELTA-SIGMA ADC, DELTA-SIGMA ADC, DELTA-SIGMA ADC, DELTA-SIGMA
JESD-30 code - - R-PDSO-G28 R-PDSO-G28 R-PDSO-G28 R-PDSO-G28
JESD-609 code - - e0 e0 e3 e0
length - - 10.2 mm 10.2 mm 10.2 mm 10.2 mm
Maximum linear error (EL) - - 0.0015% 0.0015% 0.0015% 0.0015%
Humidity sensitivity level - - 1 1 1 1
Number of analog input channels - - 5 5 5 5
Number of digits - - 18 18 18 18
Number of functions - - 1 1 1 1
Number of terminals - - 28 28 28 28
Maximum operating temperature - - 70 °C 85 °C 70 °C 70 °C
Output bit code - - BINARY BINARY BINARY BINARY
Output format - - SERIAL SERIAL SERIAL SERIAL
Package body material - - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code - - SSOP SSOP SSOP SSOP
Encapsulate equivalent code - - SSOP28,.3 SSOP28,.3 SSOP28,.3 SSOP28,.3
Package shape - - RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form - - SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius) - - 245 240 260 240
power supply - - 3/5 V 3/5 V 3/5 V 3/5 V
Certification status - - Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height - - 1.99 mm 1.99 mm 1.99 mm 1.99 mm
Nominal supply voltage - - 5 V 5 V 5 V 5 V
surface mount - - YES YES YES YES
technology - - CMOS CMOS CMOS CMOS
Temperature level - - COMMERCIAL INDUSTRIAL COMMERCIAL COMMERCIAL
Terminal surface - - Tin/Lead (Sn85Pb15) Tin/Lead (Sn85Pb15) Matte Tin (Sn) Tin/Lead (Sn85Pb15)
Terminal form - - GULL WING GULL WING GULL WING GULL WING
Terminal pitch - - 0.65 mm 0.65 mm 0.65 mm 0.65 mm
Terminal location - - DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature - - NOT SPECIFIED 20 30 20
width - - 5.29 mm 5.29 mm 5.29 mm 5.29 mm
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