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See Technical Specifications

ISL1557AIRZ-T7

Telecom IC Line Interface Unit (LIU) 16-QFN (4x4)

Manufacturer:

Renesas Technology Corp
Mfr.Part #:

ISL1557AIRZ-T7
Datasheet:

ISL1557AIRZ-T7 Datasheet (PDF)
Function:

Line Interface Unit (LIU)
Number of Circuits:

1
Voltage - Supply:

4.5V ~ 13.2V
Current - Supply:

6mA
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ISL1557AIRZ-T7 General Description

The ISL1557A is a dual operational amplifier designed for VDSL2 and ADSL line driving in DMT based solutions. This device features a high drive capability of 750mA while consuming only 6mA of supply current per amplifier and operating from a single 4. 5V to 12V supply. The driver achieves a typical distortion of -80dBc at 150kHz into a 25Ω load. The ISL1557A is designed with stronger output clamps to enhance protection against lightning transients. The ISL1557A is available in the thermally-enhanced 16 Ld QFN and 10 Ld HMSOP package and is specified for operation over the full -40°C to +85°C temperature range. The ISL1557A has two control pins (C₀ and C₁) for controlling the bias and enable/disable of the outputs. These controls allow for lowering the power to fit the performance/power ratio for the application. The ISL1557A is ideal for ADSL2+, SDSL, HDSL2, and VDSL line driving applications, including both 14. 5dBm and 21dBm applications.

Key Features

21dBm output power capability
Drives up to 750mA from a +12V supply
20V_P-P differential output drive into 21Ω
-80dBc typical driver output distortion at full output at 150kHz
-75dBc typical driver output distortion at 4MHz
-82dBc typical driver output distortion at 10MHz
-79dBc typical driver output distortion at 17MHz
Low quiescent current of 6mA per amplifier
Supply range
ISL1557AIUEZ: 4.5V to 12V
ISL1557AIRZ: ±2.25V to ±6V, 4.5V to 12V
300MHz bandwidth
Thermal shutdown
Pb-free (RoHS compliant)

Specifications

Category	Integrated Circuits (ICs)InterfaceTelecom	Series	-
Function	Line Interface Unit (LIU)	Interface	-
Number of Circuits	1	Voltage - Supply	4.5V ~ 13.2V
Current - Supply	6mA	Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount	Base Product Number	ISL1557

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Ratings and Reviews

E**n 12/09/2023

Plays very interesting. Compared with lm6172.6172 gives a very transparent atmospheric sound with an auburn diamond, but the sound is flat, monitor boring.And 49860 gives a rich natural sound. The sensations are less atmosphere, the detail is only slightly lower than in 6172, but very lustrous sound. Delicious legible kernel middle. Shakes!

J**e 09/26/2023

The volume depends on the voltage. On 12 voltiah in the room is not omformable, but tolerable

L**y 03/01/2021

The seller packed two parcels in one. Chips all from different batches, in principle, with him, the main thing that would be working.

M**h 05/04/2020

Did not check. took on stock. in kaliningrad 5 days. the previous one works.