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CH1840ET

Description
Modem-Support Circuit, DAA-12
CategoryWireless rf/communication    Telecom circuit   
File Size294KB,10 Pages
ManufacturerCermetek Microelectronics
Download Datasheet Parametric Compare View All

CH1840ET Overview

Modem-Support Circuit, DAA-12

CH1840ET Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
Parts packaging codeDMA
package instruction, MODULE,12LEAD,.9
Contacts12
Reach Compliance Codeunknown
JESD-30 codeR-XDMA-T12
length38.1 mm
Number of functions1
Number of terminals12
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialUNSPECIFIED
Encapsulate equivalent codeMODULE,12LEAD,.9
Package shapeRECTANGULAR
Package formMICROELECTRONIC ASSEMBLY
Peak Reflow Temperature (Celsius)NOT SPECIFIED
power supply5 V
Certification statusNot Qualified
Maximum slew rate0.01 mA
Nominal supply voltage5 V
surface mountNO
Telecom integrated circuit typesMODEM-SUPPORT CIRCUIT
Temperature levelINDUSTRIAL
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width25.4 mm
Base Number Matches1
CH1840
FCC Registered Data Access Arrangement (DAA) Module
INTRODUCTION
The CH1840 is an ultra small, low profile Data Access
Arrangement (DAA). Its modular construction and
single +5 Volt D.C. power requirement simplify your
development process. Specifically designed for both
voice and data, this allows direct connection of these
circuits to the telephone lines. The CH1840 has FCC
Part 68 registration that can be transferred to your
product. Simply attach the included registration sticker
to the outside of your product. This eliminates the
costs and delays associated with Part 68 testing and
registration.
The CH1840 has also been designed to meet the
requirements of Industry Canada (IC). However, it is
necessary to register your product with the Industry
Canada (IC) before use in Canada.
The CH1840 requires only 1.5 square inches of circuit
board space and presents a profile of only 0.35 inches
in height. This DAA can either be mounted directly on
a printed circuit board or socketed. Connection is
made through 0.025-inch square pins on 0.10-inch
centers. The telephone line connection is made
through a user supplied RJ-11 jack. The CH1840 is
recommended for data applications while the
CH1840D is recommended for voice applications.
The CH1840/D DAA is designed for use with a variety
of voice circuitry and LSI modem/fax chip sets. This
device is ideal for fax and modem applications up
through V.32bis. The CH1840 is pin compatible with
the CH1837A.
FEATURES
Works with all modem chip sets.
Available in 0 dB and –9 dB insertion losses.
Available in extended temperature operation, -40C
to +85C.
Complete DAA function.
Voice and data.
FCC Part 68 registered.
Registration conveyed to user.
Hook switch control.
Ring detection.
Single +5V operation.
Pulse dial capability.
CH1840B
FUNCTIONAL DESCRIPTION
The operation of the CH1840 can be broken down into
the functional blocks shown in Figure 1.
1) Phone line control
2) Billing delay
3) Ring detection
4) Signal Path
5) 2- to 4-wire converter
Control inputs and status outputs for the CH1840 are
compatible with 5 Volt CMOS. See the Electrical
Specifications.
Figure 1.
CH1840 DAA Functional Block Diagram.
©2009
Cermetek Microelectronics, Inc.
Page 1
Document No. 607-0011 Revision C (09/09)

CH1840ET Related Products

CH1840ET CH1840RD CH1840DET CH1840RDET CH1840RET CH1840R
Description Modem-Support Circuit, DAA-12 Modem-Support Circuit, ROHS COMPLIANT, DAA-12 Modem-Support Circuit, DAA-12 Modem-Support Circuit, ROHS COMPLIANT, DAA-12 Modem-Support Circuit, ROHS COMPLIANT, DAA-12 Modem-Support Circuit, ROHS COMPLIANT, DAA-12
Is it lead-free? Contains lead Lead free Contains lead Lead free Lead free Lead free
Is it Rohs certified? incompatible conform to incompatible conform to conform to conform to
Parts packaging code DMA DMA DMA DMA DMA DMA
package instruction , MODULE,12LEAD,.9 , MODULE,12LEAD,.9 , MODULE,12LEAD,.9 , MODULE,12LEAD,.9 , MODULE,12LEAD,.9 , MODULE,12LEAD,.9
Contacts 12 12 12 12 12 12
Reach Compliance Code unknown unknown unknown unknown unknown unknown
JESD-30 code R-XDMA-T12 R-XDMA-T12 R-XDMA-T12 R-XDMA-T12 R-XDMA-T12 R-XDMA-T12
length 38.1 mm 38.1 mm 38.1 mm 38.1 mm 38.1 mm 38.1 mm
Number of functions 1 1 1 1 1 1
Number of terminals 12 12 12 12 12 12
Maximum operating temperature 85 °C 70 °C 85 °C 85 °C 85 °C 70 °C
Minimum operating temperature -40 °C - -40 °C -40 °C -40 °C -
Package body material UNSPECIFIED UNSPECIFIED UNSPECIFIED UNSPECIFIED UNSPECIFIED UNSPECIFIED
Encapsulate equivalent code MODULE,12LEAD,.9 MODULE,12LEAD,.9 MODULE,12LEAD,.9 MODULE,12LEAD,.9 MODULE,12LEAD,.9 MODULE,12LEAD,.9
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form MICROELECTRONIC ASSEMBLY MICROELECTRONIC ASSEMBLY MICROELECTRONIC ASSEMBLY MICROELECTRONIC ASSEMBLY MICROELECTRONIC ASSEMBLY MICROELECTRONIC ASSEMBLY
Peak Reflow Temperature (Celsius) NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
power supply 5 V 5 V 5 V 5 V 5 V 5 V
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum slew rate 0.01 mA 0.01 mA 0.01 mA 0.01 mA 0.01 mA 0.01 mA
Nominal supply voltage 5 V 5 V 5 V 5 V 5 V 5 V
surface mount NO NO NO NO NO NO
Telecom integrated circuit types MODEM-SUPPORT CIRCUIT MODEM-SUPPORT CIRCUIT MODEM-SUPPORT CIRCUIT MODEM-SUPPORT CIRCUIT MODEM-SUPPORT CIRCUIT MODEM-SUPPORT CIRCUIT
Temperature level INDUSTRIAL COMMERCIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL COMMERCIAL
Terminal form THROUGH-HOLE THROUGH-HOLE THROUGH-HOLE THROUGH-HOLE THROUGH-HOLE THROUGH-HOLE
Terminal pitch 2.54 mm 2.54 mm 2.54 mm 2.54 mm 2.54 mm 2.54 mm
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
width 25.4 mm 25.4 mm 25.4 mm 25.4 mm 25.4 mm 25.4 mm
Base Number Matches 1 1 1 1 1 1
Maker - Cermetek Microelectronics Cermetek Microelectronics Cermetek Microelectronics Cermetek Microelectronics Cermetek Microelectronics
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