CH1840 - Low Profile Data Access Arrangement (DAA) Modules
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 Specific
Cermetek microelectronics CH1840 Low Profile Data Access Arrangement (DAA) Modules 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 device 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 in
CH1840 Features
* Works with all modem chip sets Available in 0 dB, -6 dB, and -9 dB insertion losses Available in extended temperature operation, -40oC to +85oC Complete DAA function Voice and data FCC Par
