ADN4661

ADN4661BRZ AD | Alldatasheet

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Technical content

Single, 3 V, CMOS, LVDS, High Speed Differential Driver ADN4661 Rev. 0 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. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2008 Analog Devices, Inc. All rights reserved.

FEATURES

±15 kV ESD protection on output pins

600 Mbps (300 MHz) switching rates

Flow-through pinout simplifies PCB layout 300 ps typical differential skew 700 ps maximum differential skew 1.5 ns maximum propagation delay

3.3 V power supply

±355 mV differential signaling Low power dissipation: 23 mW typical Interoperable with existing 5 V LVDS receivers Conforms to TIA/EIA-644 LVDS standards Industrial operating temperature range (−40°C to +85°C) Available in surface-mount (SOIC) package

APPLICATIONS

Backplane data transmission Cable data transmission Clock distribution FUNCTIONAL BLOCK DIAGRAM ADN4661 VCC DIN DOUT+ DOUT– GNDNC NC NC 07876-001NC = NO CONNECT Figure 1. GENERAL DESCRIPTION The ADN4661 is a single, CMOS, low voltage differential signaling (LVDS) line driver offering data rates of over 600 Mbps (300 MHz) and ultra-low power consumption. It features a flow-through pinout for easy PCB layout and separation of input and output signals. The device accepts low voltage TTL/CMOS logic signals and converts them to a differential current output of typically ±3.1 mA for driving a transmission medium such as a twisted- pair cable. The transmitted signal develops a differential voltage of typically ±355 mV across a termination resistor at the receiv- ing end, and this is converted back to a TTL/CMOS logic level by a line receiver. The ADN4661 and a companion LVDS receiver offer a new solution to high speed point-to-point data transmission, and a low power alternative to emitter-coupled logic (ECL) or positive emitter-coupled logic (PECL).

Rev. 0 | Page 2 of 12 TABLE OF CONTENTS

REVISION HISTORY

12/08—Revision 0: Initial Version

Rev. 0 | Page 3 of 12 SPECIFICATIONS VCC = 3 V to 3.6 V; RL = 100 Ω; CL = 15 pF to GND; all specifications TMIN to TMAX, unless otherwise noted. Table 1. Parameter1, 2 Symbol Min Typ Max Unit Test Conditions LVDS OUTPUTS (DOUT+, DOUT−) Differential Output Voltage VOD 250 355 450 mV See Figure 2 and Figure 4 Change in Magnitude of VOD for Complementary Output States ΔVOD 1 35 |mV| See Figure 2 and Figure 4 Offset Voltage VOS 1.125 1.2 1.375 V See Figure 2 and Figure 4 Change in Magnitude of VOS for Complementary Output States ΔVOS 3 25 |mV| See Figure 2 and Figure 4 Output High Voltage VOH 1.4 1.6 V See Figure 2 and Figure 4 Output Low Voltage VOL 0.90 1.1 V See Figure 2 and Figure 4 INPUTS (DIN, VCC) Input High Voltage VIH 2.0 VCC V Input Low Voltage VIL GND 0.8 V Input High Current IIH −10 ±2 +10 μA VIN = 3.3 V or 2.4 V Input Low Current IIL −10 ±1 +10 μA VIN = GND or 0.5 V Input Clamp Voltage VCL −1.5 −0.6 V ICL = −18 mA LVDS OUTPUT PROTECTION (DOUT+, DOUT−) Output Short-Circuit Current3 I OS −5.7 −8.0 mA DIN = VCC, DOUT+ = 0 V or DIN = GND, DOUT− = 0 V LVDS OUTPUT LEAKAGE (DOUT+, DOUT−) Power-Off Leakage IOFF −10 ±1 +10 μA VOUT = VCC or GND, VCC = 0 V POWER SUPPLY Supply Current, Unloaded ICC 4.0 8.0 mA No load, DIN = VCC or GND Supply Current, Loaded ICCL 7 10 mA DIN = VCC or GND ESD PROTECTION DOUT+, DOUT− Pins ±15 kV Human body model All Pins Except DOUT+, DOUT− ±4 kV Human body model 1 Current into device pins is defined as positive. Current out of device pins is defined as negative. All voltages are referenced to ground except VOD, ΔVOD, and ΔVOS. 2 The ADN4661 is a current mode device and functions within data sheet specifications only when a resistive load is applied to the driver outputs. Typical range is 90 Ω to 110 Ω. 3 Output short-circuit current (IOS) is specified as magnitude only; minus sign indicates direction only.

Rev. 0 | Page 5 of 12 ABSOLUTE MAXIMUM RATINGS TA = 25°C, unless otherwise noted. All voltages are relative to their respective ground. Table 3. Parameter Rating VCC to GND −0.3 V to +4 V Input Voltage (DIN) to GND −0.3 V to VCC + 0.3 V Output Voltage (DOUT+, DOUT−) to GND −0.3 V to VCC + 0.3 V Short-Circuit Duration (DOUT+, DOUT−) to GND Continuous Operating Temperature Range Industrial −40°C to +85°C Storage Temperature Range −65°C to +150°C Junction Temperature (TJ max) 150°C Power Dissipation (TJ max − TA)/θJA θJA Thermal Impedance 149.5°C/W Reflow Soldering Peak Temperature Pb-Free 260°C ± 5°C Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ESD CAUTION

Figure 5. Pin Configuration Table 4. Pin Function Descriptions 10 μF solid tantalum capacitor in parallel with a 0.1 μF capacitor to GND. 3 NC No Connect. This pin should be left unconnected. 4 GND Ground. Reference point for all circuitry on the part. 5 NC No Connect. This pin should be left unconnected. 6 NC No Connect. This pin should be left unconnected. 7 D OUT+ Noninverting Output Current Driver. When DIN is high, current flows out of DOUT+. When DIN is low, current flows into DOUT+. 8 D OUT− Inverting Output Current Driver. When DIN is high, current flows into DOUT−. When DIN is low, current flows out of DOUT−.

REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. Figure 22. 8-Lead Standard Small Outline Package [SOIC_N]

Rev. 0 | Page 12 of 12 NOTES ©2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the prop erty of their respective owners. D07876-0-12/08(0)