EL1526 Datasheet, PDF (1/2 Pages) Intersil Corporation – Dual Channel Differential DSL Line Driver for Centillium Maximus CO Chipsets

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Data Sheet
May 13, 2004
EL1526
FN7405
Dual Channel Differential DSL Line Driver
for Centillium Maximus CO Chipsets
The EL1526 is to be used with
Centillium's Maximus CO chipset for
very high performance ADSL
applications. The line driver supports use of ADSL
downstream spectrum up to 3.75MHz, beyond traditional
1.1MHz range. For the extended spectrum, payload rates up
to 50Mbps is achievable in conjunction of High-Bit-Loading
(HBL) feature of Maximus CO chipset. This feature allows
DMT tones to carry higher than 15 bits per tone, resulting in
higher performance ADSL services.
The EL1526 is an integral part of the signal chain for HBL.
The driver has been optimized for flat gain response and
reduced harmonic distortion and noise in the bands of
interest to improve the overall signal to noise in the system.
A unique internal compensation circuit eliminates the need
for external common mode snubber filters in active
termination applications.
These drivers achieve a total harmonic distortion (THD)
measurement of typically -64dB @ 2.2MHz, while
consuming typically 5mA per DSL channel of total supply
current. This supply current can be set using a resistor on
the I_ADJ pin. Two other pins (C₀ & C₁) can also be used to
adjust supply current to one of four pre-set modes (full-I_S,
3/4-I_S, 1/2-I_S, and full power-down). The EL1526 operates
on ±5V to ±12V supplies and retains its bandwidth and
linearity over the complete supply range.
The device is supplied in the small footprint (4x5mm) 24-pin
QFN package and is specified for operation over the full
-40°C to +85°C temperature range.
Features
• 450mA output drive capability
• 44.1V_P-P differential output drive into 100Ω
• -85dBc THD @ 1MHz 2V_P-P
• High slew rate of 500V/µs
• Bandwidth - 46MHz
• Current control pins
• Channel separation
- 80dB @ 500kHz
- 75dB @ 1MHz
Applications
• ADSL line drivers for Centillium Maximus CO chipsets
Ordering Information
PART
NUMBER
PACKAGE
EL1526IL
24-Pin QFN
EL1526IL-T7
EL1526IL-T13
24-Pin QFN
24-Pin QFN
TAPE &
REEL
-
7”
13”
PKG. DWG. #
MDP0046
MDP0046
MDP0046
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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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