TUCSON, Ariz. - Burr-Brown Corp. here has come uot with a dual analog frontend (AFE) that it said greatly reduces the size and cost of Digital Subscriber Line (DSL)communications systems.
DSL technology enables high-speed Internet data transfer using existing copper wire infrastructures. The AFE2126 is optimized for HDSL (high-bit-rate DSL) applications, the most widely used DSL technology. HDSL is ideal for business oriented T1/E1 data transfer services as well as local area network extenders and Internet servers. Within HDSL applications, the AFE2126 provides the entire analog
circuitry, including drivers, required to connect two HDSL digital signal
processor (DSP) chips to line transformers.
"By integrating two complete HDSL analog interfaces on a single chip, the AFE2126 reduces system complexity, lowers handling cost, and increases reliability when compared to two-chip solutions," said CR Teeple, DSL strategic marketing manager at Burr-Brown. "Offering the industry's only dual AFEs has, once again, extended Burr-Brown's position as the leading supplier of analog front ends for DSL applications."
The AFE2126's low out-of-band power spectral density (PSD) meets the new
proposed PSD standards from the American National Standards Institute as
well as Europe Telecommunications Standards Institute requirements.
Functionally, each half of the dual AFE2126 consists of a transmit and
receive section. The transmit section generates and filters analog signals
to create 2B1Q symbols. The receive section filters and digitizes the symbol
data received on the telephone line. An on-board differential line driver
provides a 13.5dBm signal to the telephone line.
Features include scalable data rate (64 to 1,168 kilobits per second),
serial digital interface, 280-milliwatts power dissipation per channel, and single 5-volt supply operation.
The AFE2126 is priced from $18 in 1,000-piece quantities and housed
in a 48-pin SSOP package. Delivery is from stock.