AD8018 5 V, Rail-to-Rail, High Output Current, xDSL Line Driver Amplifiers

The AD8018 is a dual, high speed, low cost amplifier capable of driving low distortion signals to within 0.5 V of the supply rail. It is intended for use in single supply xDSL systems where low distortion and low cost is essential, and maximum reach on the line must be attained with the minimum of supply voltages. Each amplifier drives minimum 350 mA of output current and while maintaining -95 dBc of SFDR at 100 kHz, outstanding performance for any xDSL CPE application. The AD8018 is available with flexible standby and shutdown modes. Two bit control (1.5 V threshold referenced to DGND) will put the AD8018 into a full power standby (outputs low impedance) and shutdown (outputs high impedance).

Fabricated in ADI's high speed XFCB process, the high bandwidth and fast slew rate of the AD8018 keep distortion to a minimum, while dissipating a minimum of power. The quiescent current of the AD8018 is low 9 mA/amplifier max. Low distortion, high output voltage drive, and high output current drive in small packages make the AD8018 ideal for use in low cost USB, PCMCIA and PCI Customer Premise Equipment for ADSL, SDSL, VDSL and proprietary xDSL systems.

An evaluation board is available for this product and may be ordered using the following product number AD8018ARU-EVAL.

Features and Benefits

Ideal xDSL Line Drive Amplifier for USB, PCMCIA, or PCI-Based Customer Premise Equipment (CPE)

Rail-to-Rail Output Voltage and High Output Current Drive

400 mA Output Current into Differential Load of 10 Ω @ 8 V p-p

Low Single-Tone Distortion
-86dBc Worst Harmonic, 6 V p-p into Differential 10 Ω @ 100kHz

Low Noise
4.5 nV/vHz Voltage Noise Density, 100kHz

Out-of-Band SFDR = -82dBc, 144kHz to
500kHz, R_LOAD = 12.5 Ω P_LINE = 13dBm

Low-Power Operation
3.3 V to 8 V Power Supply Range
Two Logic Bits for Standby and Shut-down

High Speed
130MHz Bandwidth (-3dB)
300 V/µs Slew Rate

Amplifiers

SPICE Models

AD8018 SPICE Macro-Model .CIR

Data Sheets

Document	note
AD8018: 5 V, Rail-to-Rail, High-Output Current, xDSL Line Drive Amplifiers Data Sheet (Rev. A)	PDF 339 kB

Application Notes

Document	note
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AN-692: Universal Precision Op Amp Evaluation Board (Rev. A)	PDF 621 kB
AN-649: Using the Analog Devices Active Filter Design Tool (Rev. 0)	PDF 5.3 M

User Guides

Document	note
UG-128: Universal Evaluation Board for Dual High Speed Op Amps in SOIC Packages	PDF 208 kB

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
AD8018ARUZ Production	14 ld TSSOP	OTH 96	-40 to 85C	3.29	3.1	Y
AD8018ARUZ-REEL7 Production	14 ld TSSOP	REEL 1000	-40 to 85C	0	3.1	Y
AD8018ARZ Production	8 ld SOIC	OTH 98	-40 to 85C	3.29	3.1	Y
AD8018ARZ-REEL Production	8 ld SOIC	REEL 2500	-40 to 85C	0	3.1	Y
AD8018ARZ-REEL7 Production	8 ld SOIC	REEL 1000	-40 to 85C	0	3.1	Y

Evaluation Boards

Part Number	Description	Price	RoHS
EVAL-HSAMP-2CPZ-10	Evaluation Bare Board for 10-Lead LFCSP	18.25	Y
EVAL-HSAMP-2CPZ-8	Evaluation Bare Board for 8-Lead LFCSP	18.25	Y
EVAL-HSAMP-2RMZ-10	Evaluation Bare Board for 10-lead MSOP Package	18.25	Y
EVAL-HSAMP-2RMZ-8	Evaluation Bare Board for 8 Lead MSOP	18.25	Y
EVAL-HSAMP-2RZ-8	Evaluation Bare Board for 8 Lead SOIC	18.25	Y