ISL1532IRZ Datasheet, PDF (1/19 Pages) Intersil Corporation – Dual Channel Differential DSL Line Driver

Data Sheet
December 4, 2006
ISL1532
FN6173.3
Dual Channel Differential DSL Line Driver
The ISL1532 is a dual channel differential amplifier designed
for driving full rate ADSL2+ signals at very low power
dissipation. The high drive capability of 450mA makes this
driver ideal for DMT designs. It contains two pairs of
wideband, high-voltage, current mode feedback amplifiers
designed on Intersil’s HS30 Bipolar SOI process for low
power consumption in DSL systems.
These drivers achieve an MTPR distortion measurement of
better than 70dB, 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 and
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).
C₀ and C₁ inputs are design to pull high initially. Floating
these inputs will put the device in disable mode. This is
contrary to EL1528 where C₀ and C₁ inputs pull low initially
and is in the enable state when C₀ and C₁ pins are floated.
The ISL1532 operates on ±5V to ±15V supplies and retains
its bandwidth and linearity over the complete supply range.
The device is supplied in a thermally-enhanced
20 Ld HTSSOP and the small footprint (4x5mm) 24 Ld QFN
packages. The ISL1532 is specified for operation over the
full -40°C to +85°C temperature range.
The ISL1532 provides larger output swing at heavy loads,
higher slew rate, and higher bandwidth while maintaining
pin-to-pin drop-in compatibility with the EL1528. The
ISL1532 integrates 50k pull-up resistors on C₀ and C₁ pins.
Pinouts
ISL1532 (24 LD QFN)
TOP VIEW
Features
• 450mA output drive capability
• 44.4V_P-P differential output drive into 100Ω
• ±5V to ±15V supply operation
• MTPR of -70dB
• Operates down to 2mA per amplifier supply current
• Current control pins
• Channel separation
- 80dB @ 500kHz
• Direct pin-to-pin replacement for EL1528
• Pb-free plus anneal available (RoHS compliant)
Applications
• Dual port ADSL2+ line drivers
• HDSL line drivers
ISL1532 (20 Ld HTSSOP)
TOP VIEW
VINA+ 1
VINB+ 2
GND 3
IADJ 4
NC 5
VINC+ 6
VIND+ 7
THERMAL
PAD
19 VINA-
18 VINB-
17 VOUTB
16 VOUTC
15 VINC-
14 VIND-
13 VOUTD
C0AB 1
20 VS-
C1AB 2
19 VOUTA
VINA+ 3
18 VINA-
VINB+ 4
17 VINB-
GND 5
IADJ 6
THERMAL
PAD*
16 VOUTB
15 VOUTC
VINC+ 7
14 VINC-
VIND+ 8
13 VIND-
C1CD 9
12 VOUTD
C0CD 10
11 VS+
*THERMAL PAD INTERNALLY CONNECTED TO GND
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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