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MX7705EPE+

Description
analog to digital converters - adc 16-bit 2ch precision adc
CategoryAnalog mixed-signal IC    converter   
File Size448KB,33 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Environmental Compliance
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MX7705EPE+ Overview

analog to digital converters - adc 16-bit 2ch precision adc

MX7705EPE+ Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerMaxim
Parts packaging codeDIP
package instructionDIP, DIP16,.3
Contacts16
Reach Compliance Codecompliant
ECCN codeEAR99
Factory Lead Time21 weeks
Maximum analog input voltage1.75 V
Minimum analog input voltage-1 V
Converter typeADC, DELTA-SIGMA
JESD-30 codeR-PDIP-T16
JESD-609 codee3
length19.175 mm
Maximum linear error (EL)0.003%
Humidity sensitivity level1
Number of analog input channels2
Number of digits16
Number of functions1
Number of terminals16
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Output bit codeBINARY, OFFSET BINARY
Output formatSERIAL
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Encapsulate equivalent codeDIP16,.3
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)260
power supply3/5 V
Certification statusNot Qualified
Sampling rate0.0384 MHz
Sample and hold/Track and holdTRACK
Maximum seat height4.572 mm
Nominal supply voltage3 V
surface mountNO
technologyBICMOS
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width7.62 mm
19-3051; Rev 4; 2/10
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADC
General Description
The MX7705 low-power, 2-channel, serial-output ana-
log-to-digital converter (ADC) includes a sigma-delta
modulator with a digital filter to achieve 16-bit resolution
with no missing codes. This ADC is pin compatible and
software compatible with the AD7705. The MX7705 fea-
tures an on-chip input buffer and programmable-gain
amplifier (PGA). The device offers an SPI™-/QSPI™-/
MICROWIRE™-compatible serial interface.
The MX7705 operates from a single 2.7V to 5.25V supply.
The operating supply current is 320µA (typ) with a 3V
supply. Power-down mode reduces the supply current to
2µA (typ).
Self-calibration and system calibration allow the MX7705
to correct for gain and offset errors. Excellent DC perfor-
mance (±0.003% FSR INL) and low noise (650nV) make
the MX7705 ideal for measuring low-frequency signals
with a wide dynamic range. The device accepts fully dif-
ferential bipolar/unipolar inputs. An internal input buffer
allows for input signals with high source impedances. An
on-chip digital filter, with a programmable cutoff and out-
put data rate, processes the output of the sigma-delta
modulator. The first notch frequency of the digital filter is
chosen to provide 150dB rejection of common-mode
50Hz or 60Hz noise and 98dB rejection of normal-mode
50Hz or 60Hz noise. A PGA and digital filtering allow sig-
nals to be directly acquired with little or no signal-condi-
tioning requirements.
The MX7705 is available in a 16-pin TSSOP package.
Features
o
Pin Compatible and Software Compatible with the
AD7705
o
16-Bit Sigma-Delta ADC
o
Two Fully Differential Input Channels
o
0.003% Integral Nonlinearity with No Missing Codes
o
Interface with Schmitt Triggers on Inputs
o
Internal Analog Input Buffers
o
PGA from 1 to 128
o
Single (2.7V to 3.6V) or (4.75V to 5.25V) Supply
o
Low Power
1mW (max), 3V Supply
2μA (typ) Power-Down Current
o
SPI-/QSPI-/MICROWIRE-Compatible 3-Wire Serial
Interface
MX7705
Ordering Information
PART
MX7705EUE+
TEMP RANGE
-40°C to +85°C
PIN- PACKAGE
16 TSSOP
+Denotes
a lead(Pb)-free/RoHS-compliant package.
Applications
Industrial Instruments
Weigh Scales
Strain-Gauge Measurements
Loop-Powered Systems
Flow and Gas Meters
Medical Instrumentation
Pressure Transducers
Thermocouple Measurements
RTD Measurements
TOP VIEW
SCLK 1
CLKIN 2
CLKOUT 3
CS 4
RESET 5
AIN2+ 6
AIN1+ 7
AIN1- 8
Pin Configuration
16 GND
15 V
DD
14 DIN
MX7705
13 DOUT
12 DRDY
11 AIN2-
10 REF-
9
REF+
TSSOP
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.

MX7705EPE+ Related Products

MX7705EPE+ MX7705EWE+T
Description analog to digital converters - adc 16-bit 2ch precision adc analog to digital converters - adc 16-bit 2ch precision adc
Is it lead-free? Lead free Lead free
Is it Rohs certified? conform to conform to
Maker Maxim Maxim
Parts packaging code DIP SOIC
package instruction DIP, DIP16,.3 SOP, SOP16,.4
Contacts 16 16
Reach Compliance Code compliant compli
ECCN code EAR99 EAR99
Factory Lead Time 21 weeks 21 weeks
Maximum analog input voltage 1.75 V 1.75 V
Minimum analog input voltage -1 V -1 V
Converter type ADC, DELTA-SIGMA ADC, DELTA-SIGMA
JESD-30 code R-PDIP-T16 R-PDSO-G16
JESD-609 code e3 e3
length 19.175 mm 10.3 mm
Maximum linear error (EL) 0.003% 0.003%
Humidity sensitivity level 1 1
Number of analog input channels 2 2
Number of digits 16 16
Number of functions 1 1
Number of terminals 16 16
Maximum operating temperature 85 °C 85 °C
Minimum operating temperature -40 °C -40 °C
Output bit code BINARY, OFFSET BINARY BINARY, OFFSET BINARY
Output format SERIAL SERIAL
Package body material PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code DIP SOP
Encapsulate equivalent code DIP16,.3 SOP16,.4
Package shape RECTANGULAR RECTANGULAR
Package form IN-LINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) 260 260
power supply 3/5 V 3/5 V
Certification status Not Qualified Not Qualified
Sampling rate 0.0384 MHz 0.0384 MHz
Sample and hold/Track and hold TRACK TRACK
Maximum seat height 4.572 mm 2.65 mm
Nominal supply voltage 3 V 3 V
surface mount NO YES
technology BICMOS BICMOS
Temperature level INDUSTRIAL INDUSTRIAL
Terminal surface Matte Tin (Sn) Matte Tin (Sn)
Terminal form THROUGH-HOLE GULL WING
Terminal pitch 2.54 mm 1.27 mm
Terminal location DUAL DUAL
Maximum time at peak reflow temperature NOT SPECIFIED NOT SPECIFIED
width 7.62 mm 7.5 mm
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