EClamp2422N ESD/EMI Protection for Audio Interfaces PRELIMINARY PROTECTION PRODUCTS - EMIClampTM Description Features The EClamp 2422N is a (C-L-C) low pass filter array with integrated TVS diodes. It is designed to suppress unwanted EMI/RFI signals and provide electrostatic discharge (ESD) protection in portable electronic equipment. This state-of-the-art device utilizes solidstate silicon-avalanche technology for superior clamping performance and DC electrical characteristics. It has been optimized for protection of headset audio ports in cellular phones and other portable electronics. Bidirectional EMI/RFI filter with integrated TVS for ESD protection ESD protection to IEC 61000-4-2 (ESD) Level 4, The device consists of two identical circuits comprised of TVS diodes for ESD protection, and a C-L-C pi-filter for EMI/RFI filtering. A typical inductor value of 2nH and a capacitor value of 100pF are used to achieve 20dB minimum attenuation from 800MHz to 2.7GHz. It has a very low series resistance of 2 Ohms, making it ideal for use on headset speaker interfaces. The TVS diodes provide effective suppression of ESD voltages in excess of ±15kV (air discharge) and ±8kV (contact discharge) per IEC 61000-4-2, level 4. Mechanical Characteristics TM ±15kV (air), ±8kV (contact) TVS working voltage: 5V Inductor: 2nH (Typical) Capacitors: 100pF (Typical at VR = 0V) Protection and filtering for two lines Solid-state technology SLP1510N6 6-pin package RoHS/WEEE Compliant Nominal Dimensions: 1.45 x 1.0 x 0.58 mm Lead Pitch: 0.5mm Lead finish: NiPdAu Marking: Marking Code Packaging: Tape and Reel per EIA 481 Applications The EClamp2422N is in a 6-pin, RoHS/WEEE compliant, SLP1510N6 package. It measures 1.45 x 1.0 x 0.58mm. The leads are spaced at a pitch of 0.5mm and are finished with lead-free NiPdAu. The small package makes it ideal for use in portable electronics. Cellular Handsets Speaker Ports in Portables Notebook Computers Package Configuration Circuit Diagram (Each Line) 1 L1 IN 1.45 OUT 1.00 C C 0.50 0.58 GND SLP1510N6 package (Bottom Side View) Nominal Dimensions in mm Device Schematic (2X) Revision 04/25/2007 1 www.semtech.com EClamp2422N PRELIMINARY PROTECTION PRODUCTS Maximum Ratings R ating Symbol Value Units VESD +/- 20 +/- 15 kV Junction Temp erature TJ 125 o Op erating Temp erature Top -40 to +85 o Storage Temp erature TSTG -55 to +150 o ESD p er IEC 61000-4-2 (Air) ESD p er IEC 61000-4-2 (Contact) C C C Electrical Characteristics (T=25oC) P ar am et er S y m b ol Con d i t i on s Mi n i mu m Ty p i c a l M ax i m u m Units 5 V 8 10 V 0.001 0.1 μA T VS Reverse Stand-Off Voltage VRWM T VS Reverse Breakdown Voltage V BR It = 1mA T VS Reverse Leakage Current IR VRWM = 3.3V Equivalent Series Resistance RDC 1.4 2 Ohms Inductance L 2 3 nH Cap acitance C1 , C2 VR = 0V, f = 1MHz 100 115 pF Total Cap acitance C1 + C2 Inp ut to Gnd, Each Line VR = 0V, f = 1MHz 210 230 pF © 2007 Semtech Corp. 2 6 85 www.semtech.com EClamp2422N PRELIMINARY PROTECTION PRODUCTS Typical Characteristics Typical Insertion Loss S21 (Each Line) Analog Crosstalk (Each Line) CH1 S21 CH1 S21 LOG LOG 20 dB /REF 0 dB 6 dB / REF 0 dB 1: -21.107 dB 900 MHz 2: -14.439 dB 1.8 GHz 0 dB 3: -13.193 dB 2.5 GHz -6 dB -12 dB 1 2 -18 dB 3 -24 dB -30 dB -36 dB -42 dB -48 dB 1 MHz START . 030 MHz 10 MHz 100 MHz 3 1 GHz GHz ESD Clamping (+8kV Contact) ESD Clamping (-8kV Contact) Note: Data is taken with a 10x attenuator Note: Data is taken with a 10x attenuator Normalized Capacitance vs. Reverse Voltage Clamping Voltage vs. Peak Pulse Current 16 1.05 f = 1 MHz 1.04 14 1.03 12 Clamping Voltage - VC (V) CJ(VR) / CJ(VR=0)) STOP 3 000. 000000 MHz START . 030 MHz STOP 3 000. 000000 MHz 1.02 1.01 1 0.99 0.98 0.97 0.96 10 8 6 4 Waveform Parameters: tr = 8µs td = 20µs 2 0 0.95 0 1 © 2007 Semtech Corp. 2 3 Reverse Voltage - VR (V) 4 0 5 1 2 3 4 5 6 7 Peak Pulse Current - IPP (A) 3 www.semtech.com EClamp2422N PRELIMINARY PROTECTION PRODUCTS Applications Information Figure 1 -Circuit Diagram (Each Line) Device Connection L1 The EClamp2422N provides EMI filtering and ESD protection in a small SLP1510N6 package for speaker port applications. The equivalent circuit diagram is shown in Figure 1. The layout of the device is designed such that the data lines can be routed through the device. The first line pair enters at pin 1 and exits at pin 6. The second line pair enters at pin 2 and exits at pin 5. The device is symmetrical so the above connections may be reversed. Ground connection is made at pins 3 and 4. IN OUT C C GND Circuit Board Layout Recommendations for Suppression of ESD. Good circuit board layout is critical for the suppression of ESD induced transients. The following guidelines are recommended: z Place the TVS near the input terminals or connectors to restrict transient coupling. z Minimize the path length between the TVS and the protected line. z Minimize all conductive loops including power and ground loops. z The ESD transient return path to ground should be kept as short as possible. z Never run critical signals near board edges. z Use ground planes whenever possible. © 2007 Semtech Corp. Figure 2 - Pin Identification and Configuration (Top Side View) Line In 1 Line In GND 4 6 Line Out Line Out GND Pin Identification 1, 2 Input Lines from Speaker 5, 6 Output Lines to Audio Ckt 3, 4 Ground www.semtech.com EClamp2422N PRELIMINARY PROTECTION PRODUCTS Applications Information Vin + EClamp2422N Vin - Differential Mode Protection with Speaker Output V2 EClamp2422N V1 Protection of Two Single-Ended Mode Speakers © 2007 Semtech Corp. 5 www.semtech.com EClamp2422N PRELIMINARY PROTECTION PRODUCTS Applications Information Vout + EClamp2422N Vout - Differential Mode Protection with Microphone Input V2 EClamp2422N V1 Protection of Single-Ended Mode Microphone and Speaker Output © 2007 Semtech Corp. 6 www.semtech.com EClamp2422N PRELIMINARY PROTECTION PRODUCTS Applications Information - Spice Model L1 Line In Line Out 2nH EClamp2422N Spice Model Table 1 - EClamp2422N Spice Parameters © 2007 Semtech Corp. Parameter Unit D1 (T VS) D2 (T VS) IS Amp 4.09-15 4.09E-15 BV Volt 7.7 7.7 VJ Volt 0.7 0.7 RS Ohm 0.416 0.416 IB V Amp 1E-3 1E-3 CJO Farad 210E-12 210E-12 TT sec 2.541E-9 2.541E-9 M -- 0.01 0.01 N -- 1.1 1.1 EG eV 1.11 1.11 7 www.semtech.com EClamp2422N PRELIMINARY PROTECTION PRODUCTS Outline Drawing - SLP1510N6 A B D DIM E PIN 1 INDICATOR (LASER MARK) A SEATING PLANE aaa C A2 A A1 A2 b D E e L N aaa bbb DIMENSIONS INCHES MILLIMETERS MIN NOM MAX MIN NOM MAX .020 .023 .026 0.00 .001 .002 (.005) .008 .010 .012 .053 .057 .061 .035 .039 .043 .020 BSC .012 .015 .017 6 .003 .004 0.50 0.58 0.65 0.00 0.03 0.05 (0.13) 0.20 0.25 0.30 1.35 1.45 1.55 0.90 1.00 1.10 0.50 BSC 0.30 0.38 0.425 6 0.08 0.10 C A1 D/2 1 2 LxN E/2 N bxN bbb e C A B NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES) Land Pattern - SLP1510N6 P DIMENSIONS DIM C G P X Y Z Z (C) G Y INCHES (.034) .008 .020 .010 .027 .061 MILLIMETERS (0.875) 0.20 0.50 0.25 0.675 1.55 X NOTES: 1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. © 2007 Semtech Corp. 8 www.semtech.com EClamp2422N PRELIMINARY PROTECTION PRODUCTS Marking Ordering Information 2422N Part Number Qty per Reel Reel Size EClamp2422N.TCT 3000 7 Inch EMIClamp and EClamp are marks of Semtech Corporation Tape and Reel Specification Pin 1 Location User Direction of feed Device Orientation in Tape A0 B0 K0 1.24±0.05mm 1.70±0.05mm 0.76±0.05mm Tape Width B, (Max) D D1 8 mm 4.2 mm (.165) 1.5 + 0.1 mm - 0.0 mm (0.59 +.005 - .000) 0.8 mm ±0.05 (.031) E 1.750±.10 mm (.069±.004) F K (MAX) P P0 P2 T(MAX) W 3.5±0.05 mm (.138±.002) 2.4 mm (.094) 4.0±0.1 mm (.157±.004) 4.0±0.1 mm (.157±.004) 2.0±0.05mm (.079±.002) 0.4 mm (.016) 8.0 mm + 0.3 mm - 0.1 mm (.312±.012) Contact Information Semtech Corporation Protection Products Division 200 Flynn Rd., Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 © 2007 Semtech Corp. 9 www.semtech.com