AD8394

Low Power, High Output Current, Quad Op Amp, Dual-Channel ADSL/ADSL2+ Line Driver AD8394 FEATURES 4 current feedback, high output current amplifiers Ideal for use as ADSL/ADSL2+ dual-channel, central office (CO) line drivers Dual-supply operation from ±6 V to ±12 V Single-supply operation from 12 V to 24 V Low power consumption 700 mW internal power dissipation while driving 20.4 dBm ADSL2+ signal (CF = 5.5) 3 active power modes plus shutdown Low leakage current in shutdown mode High output voltage and current drive Low distortion MTPR down to −70 dBc High speed: 300 V/μs slew rate PIN CONFIGURATIONS PD0 1, 2 PD1 1, 2 1 2 AD8394 + – + – 20 19 18 17 VEE VOUT1 –VIN1 –VIN2 +VIN1 3 +VIN2 4 GND 5 IADJ 6 16 VOUT2 15 VOUT3 14 –VIN3 13 –VIN4 06951-001 +VIN3 7 +VIN4 8 PD1 3, 4 9 + – + – 12 VOUT4 11 VCC PD0 3, 4 10 Figure 1. AD8394AREZ, 20-Lead TSSOP_EP 23 PD0 1, 2 24 PD1 1, 2 22 VEE + – + – APPLICATIONS ADSL/ADSL2+ CO line drivers xDSL line drives High output current, low distortion amplifiers DAC output buffers +VIN1 1 +VIN2 2 GND 3 IADJ 4 NC 5 +VIN3 6 +VIN4 7 20 VOUT1 21 NC 19 18 17 16 15 14 –VIN1 –VIN2 VOUT2 VOUT3 –VIN3 –VIN4 VOUT4 GENERAL DESCRIPTION The AD8394 is comprised of four high output current, low power consumption operational amplifiers. It is particularly well suited for the CO driver interface in digital subscriber line systems, such as ADSL and ADSL2+. The driver can deliver 20.4 dBm to a line, yet compensates for losses due to hybrid insertion and back termination resistors. In addition, the low distortion, fast slew rate, and high output current capability make the AD8394 ideal for other applications, such as medical instrumentation, DAC output drivers, and other high peak current circuits. Four bias modes are selectable via two digital inputs (PD0 and PD1). The AD8394 is available in two thermally enhanced packages, a 20-lead TSSOP_EP (AD8394AREZ) and a 4 mm × 5 mm 24-lead LFCSP (AD8394ACPZ). + – + – 13 8 9 VCC 10 NC 11 PD1 3, 4 PD0 3, 4 NC 12 Figure 2. AD8394ACPZ, 24-Lead LFCSP, 4 mm × 5 mm For more information about the AD8394 email: broadband.products@analog.com. Rev. Sp0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2007 Analog Devices, Inc. All rights reserved. 06951-002 AD8394 NOTES ©2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06951F-0-10/07(Sp0) Rev. Sp0 | Page 2 of 2