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Semiconductor

February 1999

T

NT

DUC

PRO LACEME 747

7

ETE

P

SOL DED RE 800-442-

B

O

EN

om

s 1-

OMM lication harris.c

C

E

NO R ntral App entapp@

Ce

: c

Call or email

HC6094

ADSL Analog Front End Chip

VSSA_RX

D0 (LSB)

PGAI+

PGAO+

VDDA_RX

PGAO-

[ /Title

(HC60

94)

/Sub-

ject

(ADSL

Ana-

log

Front

End

Chip)

/Autho

r ()

/Key-

words

(Har-

ris

Semi-

con-

ductor,

Tele-

com,

SLICs,

SLACs

, Tele-

phone,

Tele-

phony,

WLL,

Wire-

less

Local

Loop,

PBX,

Pri-

vate

Branch

Exchan

ge,

NT1+,

CO,

Cen-

Features

鈥?14-Bit 5 MSPS DAC

鈥?Programmable Gain Stages

鈥?Anti-Aliasing and Reconstruction Filters

Description

The HC6094 performs the Analog processing for the ADSL

chip set. The transmit chain has a 14 Bit DAC, a third-order

Chebyshev reconstruction 鏗乴ter and a programmable attenu-

ator (-12 to 0dB) capable of driving a 220鈩?differential load.

The receiver chain has a high impedance input stage, pro-

grammable gain stage (0 to 24dB), additional programmable

gain (-9 to 18dB) and a third-order Chebyshev anti-aliasing

鏗乴ter for driving an off-chip A/D.

Laser tri

mmable thin-鏗乴m resistors are used to set the 鏗乴ter

Applications

鈥?FDM DMT ADSL

鈥?CAP ADSL

鈥?EC DMT ADSL

鈥?Communications Receiver

cutoff frequency and DAC linearity. The transmit and receive

signal chains are speci鏗乪d at 65dB MTPR.

Ordering Information

PART

NUMBER

HC6094IN

TEMP.

RANGE (

o

C)

-40 to 85

PACKAGE

44 Ld MQFP

PKG. NO.

Q44.10x10

Pinout

HC6094

(MQFP)

TOP VIEW

VDDA_ATT

D13 (MSB)

GNDD_TX

GNDA_TX

VDDD_TX

CTLOUT

CTLIN

D11

D10

D9

D8

D7

D6

D5

D4

D3

D2

D1

1

44 43 42 41 40 39 38 37 36 35 34

33

2

32

3

4

5

6

7

8

9

31

30

29

28

27

26

25

24

TXO+

TXO-

CLK

D12

VSSA_ATT

VDDA_TX

VSSA_TX

ARTN

VDDD_RX

CS

SDI

RST

SCLK

GNDD__RX

GNDA_RX

10

11

23

12 13 14 15 16 17 18 19 20 21 22

PGAI-

RXO-

RXO+

RXI+

RXI-

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.

Copyright

漏

Harris Corporation 1999

File Number

4260.2

1

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