AFE1104E Datasheet, PDF (1/10 Pages) Burr-Brown (TI) – HDSL/MDSL ANALOG FRONT END

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AFE1104
AFE1104E
HDSL/MDSL ANALOG FRONT END
FEATURES
q COMPLETE ANALOG INTERFACE
q T1, E1, AND MDSL OPERATION
q CLOCK SCALEABLE SPEED
q SINGLE CHIP SOLUTION
q +5V ONLY (5V OR 3.3V DIGITAL)
q 250mW POWER DISSIPATION
q 48-PIN SSOP
q –40°C TO +85°C OPERATION
DESCRIPTION
Burr-Brown’s Analog Front End greatly reduces the
size and cost of an HDSL or MDSL system by provid-
ing all of the active analog circuitry needed to connect
PairGain Technologies SPAROW HDSL digital sig-
nal processor to an external compromise hybrid and a
1:2 HDSL line transformer. All internal filter re-
sponses as well as the pulse former output scale with
clock frequency—allowing the AFE1104 to operate
over a range of bit rates from 196kbps to 1.168Mbps.
Functionally, this unit is separated into a transmit and
a receive section. The transmit section generates, fil-
ters, and buffers outgoing 2B1Q data. The receive
section filters and digitizes the symbol data received
on the telephone line and passes it to the SPAROW.
The HDSL Analog Interface is a monolithic device
fabricated on 0.6µCMOS. It operates on a single +5V
supply. It is housed in a 48-pin SSOP package.
PLL_OUT
PLL_IN
txDAT
txCLK
Pulse
Former
Transmit
Control
Line
Driver
Voltage
Reference
txLINE_P
txLINE_N
REF_P
V_CM
REF_N
rxSYNC
rxCLK
rxLOOP
2
rxGAIN
14
rxD13 - rxD0
Receive
Control
Decimation
Filter
Delta-Sigma
Modulator
rxLINE_P
rxLINE_N
rxHYB_P
rxHYB_N
Patents Pending
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: [phone] • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: [phone] (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]
©_{1996 Burr-Brown Corporation}
PDS-11331A
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APrFintEed1in1U0.S.4A. August, 1996