ISL1540

Features:

• 200mA output current driving capability
• Operates from a single -40V to -60V power supply
• 800mW per channel total power dissipation
• MTPR of -70dB
• 96V_P-P differential output swing
• Fixed gain, integrated gain resistors
• Current control pins
• Output clamp for lightning and surge protection
• Channel separation
  - 75dB @ 1MHz
• Pb-free plus anneal available (RoHS compliant)


Application

• Dual port ADSL and ADSL2+ line drivers
• HDSL, HDSL2, HDSL 4 and SHDSL line drivers
• DSLAM, DLC, MDU/MTU line drivers
• Performance upgrade to Le87213 and Le87213A


Pinout




Specifications

V_CC Voltage to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.0V
V_BAT Voltage to GND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65V to 0.3V
Driver V_IN+ Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V_BAT to 0.0V
ENA Voltage to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to V_CC
I_ADJ Voltage to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to V_CC-2V
Current into any Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8mA
Output Current from Driver (Static) . . . . . . . . . . . . . . . . . . . . .  . 50mA
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . .  .-40°C to +85°C
Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +150°C


Description

The ISL1540 is a -52V dual channel differential amplifier designed for driving full rate ADSL signals at very low power dissipation. The high supply voltage allows operation from a single standard -52V negative battery supply. The ISL1540 contains two pairs of wideband, high voltage, current mode feedback amplifiers optimized for lower power consumption and highest performance in ADSL and ADSL2+ systems. The line drivers have fixed gain A_V = 48 with integrated feedback and gain resistors. Its output clamping circuit eliminates the requirement for the Zener protection diodes.

These drivers achieve an MTPR distortion measurement of better than 70dB while consuming typically 3mA per DSL channel of total supply current.

The ISL1540 is supplied in a thermally-enhanced 8mm x 8mm 32-pin QFN package and is specified for operating over the full -40°C to +85°C temperature range.