ST3DV520A High bandwidth switch with 20- to 10-bit MUX/DEMUX Features Low RON: 4.0 typical VCC operating range: 3.0 to 3.6 V Enhanced ESD protection: > 8 kV (contact) and 15 kV (HBM) Channel on capacitance: 9.5 pF typical Switching time speed: 9 ns Near to zero propagation delay: 250 ps Very low crosstalk: -45 dB at 250 MHz Bit-to-bit skew: 200 ps > 600 MHz -3 dB typical bandwidth (or data frequency) Package: QFN56 QFN56 Table 1. January 2011 Device summary Order code Package Packing ST3DV520AQTR QFN56 Tape and reel Doc ID 16885 Rev 3 1/20 www.st.com 20 Contents ST3DV520A Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 2/20 Doc ID 16885 Rev 3 ST3DV520A 1 Description Description The ST3DV520A 20- to 10-bit multiplexer/demultiplexer is a high bandwidth bidirectional switch with low RON suitable for analog video applications. The signal from each input is multiplexed into one of two selected outputs, while the unselected switch goes into Hi-Z status. The device is designed for very low crosstalk, low bit-to-bit skew and low I/O capacitance. The ST3DV520A supports high definition (HD) video switching standards and is also suitable for general-purpose switching that requires high signal integrity. Doc ID 16885 Rev 3 3/20 Pin description Pin description ! '.$ 6## " .# '.$ # $ 6## '.$ % & '.$ ' ( '.$ ) Pin connection (top through view) * Figure 1. 6## 3%, 2 ST3DV520A '.$ 6 ## ) '.$ .# * '.$ '.$ ) .# * .# 6 ## 6## '.$ ! " ! " '.$ # $ # '.$ $ 6## & % % & '.$ ' ( ' ( '.$ !- Table 2. 4/20 Pin description Pin Symbol 2, 3, 7, 8, 11, 12, 14, 15, 19, 20 A, B, C, D, E, F, G, H, I, J 22, 23, 48, 47, 43, 42, 37, 36, 32, 31 A0, B0, C0, D0, E0, F0, G0, H0, I0, J0 10-bit multiplexed to bus 0 25, 26, 46, 45, 41, 40, 35, 34, 30, 29 A1, B1, C1, D1, E1, F1, G1, H1, I1, J1 10-bit multiplexed to bus 1 5, 51, 52, 54 N/C Not connected 17 SEL Bus and LED switch selection 4, 10, 18, 27, 38, 50, 56 VCC Supply voltage 1, 6, 9, 13, 16, 21, 24, 28, 33, 39, 44, 49, 53, 55 GND Ground Doc ID 16885 Rev 3 Name and function 10-bit bus ST3DV520A Pin description Figure 2. Input equivalent circuit ! ! " " ! " # # $ $ # $ % % & & % & ' ' ( ( ' ( ) ) * * ) * 3%, !-6 Table 3. Switch function table SEL Function L 10-bit bus to 10-bit multiplexed bus 0 H 10-bit bus to 10-bit multiplexed bus 1 Doc ID 16885 Rev 3 5/20 Maximum ratings 3 ST3DV520A Maximum ratings Stressing the device above the rating listed in the "absolute maximum ratings" table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the operating sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Table 4. Absolute maximum ratings Symbol Parameter Value Unit VCC Supply voltage to ground -0.5 to 4.6 V VIO DC input output voltage -0.5 to 4.6 V VIC DC control input voltage -0.5 to 4.6 V 120 mA 0.5 W -65 to 150 C 300 C current(1) IO DC output PD Power dissipation Tstg Storage temperature TL Lead temperature (10 sec) 1. If V IO x IO does not exceed the maximum limit of PD. Recommended operating conditions Table 5. Recommended operating conditions Value Symbol 6/20 Parameter Unit Min Typ Max VCC Supply voltage to ground 3 - 3.6 V VIC DC control input voltage (SEL) 0 - 5 V VIO DC input/output voltage 0 - VCC V TA Operating temperature -40 - 85 C Doc ID 16885 Rev 3 ST3DV520A Electrical characteristics 4 Electrical characteristics Table 6. DC electrical characteristics (VCC = 3.3 V 10%) Value Symbol Parameter Test condition -40 to 85 C Unit Min Typ Max VIH Voltage input high (SEL) High level guaranteed 2 - - V VIL Voltage input low (SEL) Low level guaranteed -0.5 - 0.8 V VIK Clamp diode voltage (SEL) VCC = 3.6 V IIN = -18 mA - -0.8 -1.2 V IIH Input high current (SEL) VCC = 3.6 V VIN = VCC - - 5 A IIL Input low current (SEL) VCC = 3.6 V VIN = GND - - 5 A Leakage current through the switch common terminals (A to J) VCC = 3.6 V A to J = VCC LED1 to LED3 = VCC A0 to J0 = 0 V A1 to J1 = floating SEL = VCC - - 1 A SEL pin leakage current VCC = 0 V SEL = 0 to 3.6 V - - 1 A resistance(2) VCC = 3.0 V VIN = 1.5 to VCC IIN = -40 mA - 4.0 6.5 IOFF(SW)(1) IOFF(SEL) RON Switch ON RFLAT ON resistance flatness (2) (3) VCC = 3.0 V VIN at 1.5 and VCC IIN = -40 mA - 0.5 - ON resistance match between channel RON = RONMAX-RONMIN (2)(4) VCC = 3.0 V VIN = 1.5 to VCC IIN = -40 mA - 0.4 1 RON 1. Refer to Figure 4: Test circuit for leakage current (IOFF) on page 11. 2. Measured by voltage drop between channels at indicated current through the switch. ON resistance is determined by the lower of the voltages. 3. Flatness is defined as the difference between the RONMAX and RONMIN of ON resistance over the specified range. 4. RON measured at same VCC, temperature and voltage level. Doc ID 16885 Rev 3 7/20 Electrical characteristics Table 7. ST3DV520A Capacitance (TA = 25 C, f = 1 MHz) Value Symbol Parameter Test condition Unit Min Typ Max CIN SEL pin input capacitance(1) DC = 0.25 V AC = 0.5 V PP f = 1 MHz - 2 3 pF COFF Switch off capacitance(2) DC = 0.25 V AC = 0.5 V PP f = 1 MHz - 4 5 pF CON Switch on capacitance(3) DC = 0.25 V AC = 0.5 V PP f = 1 MHz - 9.5 11 pF 1. Refer to Figure 5 on page 11. 2. Refer to Figure 6 on page 12. 3. Refer to Figure 7 on page 12. Table 8. Power supply characteristics Value Symbol ICC Table 9. Parameter Quiescent power supply Test condition VCC = 3.6 V, VIN = VCC or GND -40 to 85 C Unit Min Typ Max - 150 500 A Dynamic electrical characteristics (VCC = 3.3 V 10%) Value Symbol Parameter Test condition Unit Min Typ Max Xtalk Crosstalk(1) R L= 100 f = 250 MHz - -45 - dB OIRR Off isolation(2) R L= 100 f = 250 MHz - -37 - dB BW -3 dB bandwidth(3) R L= 100 0 < VIN 3.6 V - 600 - MHz 1. Refer to Figure 9 on page 14. 2. Refer to Figure 10 on page 15. 3. Refer to Figure 8 on page 13. 8/20 -40 to 85 C Doc ID 16885 Rev 3 ST3DV520A Electrical characteristics Table 10. Switching characteristics (TA = 25 C, VCC = 3.3 V 10%) Value Symbol tPD Parameter Test condition Propagation delay VCC = 3 to 3.6 V Unit Min Typ Max - 0.25 - ns tPZH, tPZL Line enable time, SE VCC = 3 to 3.6 V to x to x0 or x to x1 0.5 6.5 15 ns tPHZ, tPLZ Line disable time, SE VCC = 3 to 3.6 V to x to x0 or x to x1 0.5 6.5 8.5 ns tSK(O) Output skew between center port to any other port VCC = 3 to 3.6 V - 0.1 0.2 ns tSK(P) Skew between opposite transition of VCC = 3 to 3.6 V the same output (tPHL, tPLH) - 0.1 0.2 ns Table 11. ESD performance Value Symbol Test condition Unit Min Typ Max Contact discharge(1) IEC61000-4-2 - 8 - kV Human body model (MIL-STD-883) - 15 - kV ESD 1. Refer to Figure 3: Diagram for suggested VCC decoupling on page 10. Doc ID 16885 Rev 3 9/20 Electrical characteristics '.$ 6## '.$ '.$ 6## '.$ '.$ Diagram for suggested VCC decoupling 6## Figure 3. ST3DV520A '.$ 6## '.$ '.$ $54 '.$ 6## '.$ '.$ 6## 6## '.$ '.$ '.$ !- 1. Applicable for system level ESD test. 2. 100 nF capacitors must be used as local bypass capacitors between the adjacent VCC and GND pairs (total 7). 10/20 Doc ID 16885 Rev 3 ST3DV520A Electrical characteristics Figure 4. Test circuit for leakage current (IOFF) 6 6## )/&&37 ! ! ! &,/!4 6 6 3%, '.$ !- Figure 5. Test circuit for SEL pin input capacitance (CIN) 6 6## ,#2 METER $# 6 !# 600 F -(Z 3%, $54 '.$ !- Doc ID 16885 Rev 3 11/20 Electrical characteristics Figure 6. ST3DV520A Test circuit for switch off capacitance (COFF) 6 , OR ( ( FOR CHANNEL AND , FOR CHANNEL 3%, ,#2 METER $# 6 !# 600 F -(Z 6## ! ! $54 ! '.$ !- Figure 7. Test circuit for switch on capacitance (CON) 6 , OR ( , FOR CHANNEL AND ( FOR CHANNEL 3%, ,#2 METER $# 6 !# 600 F -(Z 6## ! ! $54 ! '.$ !- 12/20 Doc ID 16885 Rev 3 ST3DV520A Electrical characteristics Figure 8. Test circuit for bandwidth measurement (BW) %84 42)''%2 ")!3 .ETWORK ANALYZER (0%3 6")!3 0 0 6## ! ! #, P& 3%, $54 63%, !- 1. CL includes probe and jig capacitance. Frequency response is measured at the output of the ON channel. For example, when VSEL = 0 and A is the input, the output is measured at A0. All unused analog I/O ports are left open. HP8753ES setup: Average = 4 RBW = 3 kHz VBIAS = 0.35 V ST = 2 s P1 = 0 dBm Doc ID 16885 Rev 3 13/20 Electrical characteristics Figure 9. ST3DV520A Test circuit for crosstalk measurement (xtalk) %84 42)''%2 ")!3 .ETWORK ANALYZER (0%3 6")!3 0 0 6## ! ! 2, " " ! " # $54 # 2, $ $ # 3%, $ 63%, !- 1. CL includes probe and jig capacitance. 2. A 50 termination resistor is needed to match the loading of the network analyzer. Crosstalk is measured at the output of the non-adjacent ON channel. For example, when VSEL = 0, and B is the input, the output is measured at D. All unused analog input ports are connected to GND and output ports are left open. HP8753ES setup: Average = 4 RBW = 3 kHz VBIAS = 0.35 V ST = 2 s P1 = 0 dBm 14/20 Doc ID 16885 Rev 3 ST3DV520A Electrical characteristics Figure 10. Test circuit for off isolation measurement (OIRR) %84 42)''%2 ")!3 .ETWORK ANALYZER (0%3 6")!3 0 0 6## ! ! 2, " " $54 ! 3%, " 63%, !- 1. CL includes probe and jig capacitance. 2. A 50 termination resistor is needed to match the loading of the network analyzer. Off isolation is measured at the output of the OFF channel. For example, when VSEL = 0, and B is the input, the output is measured at B1. All unused analog input ports are connected to GND and output ports are left open. HP8753ES setup: Average = 4 RBW = 3 kHz VBIAS = 0.35 V ST = 2 s P1 = 0 dBm Doc ID 16885 Rev 3 15/20 Package mechanical data 5 ST3DV520A Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK(R) packages, depending on their level of environmental compliance. ECOPACK(R) specifications, grade definitions and product status are available at: www.st.com. ECOPACK(R) is an ST trademark. Figure 11. Package outline for QFN56 (11 x 5 mm) - pitch 0.5 mm 7576329-A 16/20 Doc ID 16885 Rev 3 ST3DV520A Package mechanical data Table 12. Mechanical data for QFN56 (11 x 5 mm) - pitch 0.5 mm Millimeters Symbol Min Typ Max A 0.70 0.75 0.80 A1 - - 0.05 0.20 - A3 b 0.20 0.25 0.30 D 10.90 11.00 11.10 D2 8.30 8.40 8.50 D3 - 9.50 - E 4.90 5.00 5.10 E2 2.30 2.40 2.50 E3 - 3.50 - e - 0.50 - L 0.30 0.40 0.50 Figure 12. Footprint recommendation for QFN56 (11 x 5 mm) - pitch 0.5 mm Doc ID 16885 Rev 3 17/20 Package mechanical data ST3DV520A Figure 13. Carrier tape information for QFN56 (11 x 5 mm) - pitch 0.5 mm 7875978_K 18/20 Doc ID 16885 Rev 3 ST3DV520A Revision history Figure 14. Reel information for QFN56 (11 x 5 mm) - pitch 0.5 mm 6 Revision history Table 13. Document revision history Date Revision Changes 11-Dec-2009 1 Initial release. 07-Apr-2010 2 Corrected circuit drawing errors in Figure 2: Input equivalent circuit. Modified text in the Description on page 1. 11-Jan-2011 3 Document reformatted, replaced VDD by VCC in Figure 1, Table 2, Figure 3, to Figure 10, moved notes below Figure 8 to Figure 10, corrected typo in Table 5 to Table 7, Table 9, Figure 3 to Figure 10. Doc ID 16885 Rev 3 19/20 ST3DV520A Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries ("ST") reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST's terms and conditions of sale. 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