Low Voltage, 300 MHz Quad 2:1 Mux Analog HDTV Audio/Video Switch ADG794 FEATURES FUNCTIONAL BLOCK DIAGRAM Bandwidth: 300 MHz Low insertion loss and on resistance: 5 Ω typical On resistance flatness: 0.68 Ω typical Single 3 V/5 V supply operation Low quiescent supply current: 1 nA typical Fast switching times: tON, 7 ns tOFF, 5 ns TTL/CMOS compatible ADG794 S1A D1 S1B S2A D2 S2B S3A D3 S3B S4A D4 S4B RGB switches HDTV DVD-R Audio/video switches EN IN 05150-001 1 OF 2 DECODER APPLICATIONS Figure 1. GENERAL DESCRIPTION The ADG794 is a monolithic CMOS device comprising four 2:1 multiplexer/demultiplexers with high impedance outputs. The CMOS process provides low power dissipation yet gives high switching speed and low on resistance. The on resistance variation is typically less than 1.2 Ω over the input signal range. These switches conduct equally well in both directions when on. In the off condition, signal levels up to the supplies are blocked. The ADG794 switches exhibit break-before-make switching action. The bandwidth of the ADG794 is typically 300 MHz and this, coupled with low distortion (typically 0.68%), makes the part suitable for switching analog audio/video signals. PRODUCT HIGHLIGHTS 1. Wide bandwidth: 300 MHz. The ADG794 operates from a single 3.3 V/5 V supply and is TTL logic compatible. The switches are controlled by the logic inputs IN and EN as shown in Table 4. The EN pin allows the user to disable all switches. 2. Ultralow power dissipation. 3. Crosstalk is typically −70 dB at 10 MHz. 4. Off isolation is typically −65 dB at 10 MHz. The ADG794 is available in a 16-pin QSOP package. 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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved. ADG794 TABLE OF CONTENTS Specifications..................................................................................... 3 Typical Performance Characteristics ..............................................8 Single Supply ................................................................................. 3 Typical Application .......................................................................8 Absolute Maximum Ratings............................................................ 5 Test Circuits........................................................................................9 ESD Caution.................................................................................. 5 Outline Dimensions ....................................................................... 11 Pin Configuration and Function Descriptions............................. 6 Ordering Guide .......................................................................... 11 Terminology ...................................................................................... 7 REVISION HISTORY 10/04—Revision 0: Initial Version Rev. 0 | Page 2 of 12 ADG794 SPECIFICATIONS SINGLE SUPPLY VDD = 5 V ± 10%, GND = 0 V. All specifications TMIN to TMAX, unless otherwise noted. Table 1. Parameter ANALOG SWITCH Analog Signal Range On Resistance (RON) On Resistance Match between Channels (∆RON) B Version1 25°C TMIN to TMAX 0 to 2.5 5 7 0.4 8 1.2 On Resistance Flatness (RFLAT(ON)) 0.7 1.35 LEAKAGE CURRENTS Source Off Leakage, IS (Off) Drain Off Leakage, ID (Off) Channel On Leakage, ID, IS (On) DIGITAL INPUTS Input High Voltage, VINH Input Low Voltage, VINL Input Current IINL or IINH Digital Input Capacitance, CIN DYNAMIC CHARACTERISTICS2 tON, tON (EN) ±0.001 ±0.001 ±0.001 3 ns typ ns max ns typ ns max ns typ ns min dB typ dB typ MHz typ % typ pC typ pF typ pF typ pF typ CL = 35 pF; RL = 50 Ω VS = 2 V; Figure 9 CL = 35 pF; RL = 50 Ω VS = 2 V; Figure 9 CL = 35 pF; RL = 50 Ω VS1 = VS2 = 2 V; Figure 10 f = 10 MHz; RL = 50 Ω; Figure 12 f = 10 MHz; RL = 50 Ω; Figure 13 RL = 50 Ω; Figure 11 RL = 100 Ω CL = 1 nF; VS = 0 V; Figure 14 −65 −70 300 0.7 6 6 7.5 13.5 VDD = 5.5 V; digital inputs = 0 V or VDD 0.001 1 2 VS = 3 V/1 V; VD = 1 V/3 V; Figure 7 VS = 3 V/1 V; VD = 1 V/3 V; Figure 7 VD = VS = 3 V/1 V; Figure 8 VIN = VINL or VINH 1 1 nA typ nA typ nA typ VD = 0 V to 1 V; IS = −10 mA µA typ µA max pF typ 8 Off Isolation Channel-to-Channel Crosstalk Bandwidth −3 dB Distortion Charge Injection CS (Off) CD (Off) CD, CS (On) POWER REQUIREMENTS IDD VD = 0 V to 1 V; IS = −10 mA VD = 0 V to 1 V; IS = −10 mA; Figure 6 ±0.1 3 14 Break-Before-Make Time Delay, tD V Ω typ Ω max Ω typ Ω max Ω typ Ω max V min V max 7 5 Test Conditions/Comments 2.4 0.8 0.001 tOFF, tOFF (EN) Unit Temperature range for B Version is −40°C to +85°C. Guaranteed by design, not subject to production test. Rev. 0 | Page 3 of 12 µA typ µA max ADG794 VDD = 3 V ± 10%, GND = 0 V. All specifications TMIN to TMAX, unless otherwise noted. Table 2. Parameter ANALOG SWITCH Analog Signal Range On Resistance (RON) On Resistance Match between Channels (∆RON) 25°C B Version1 TMIN to TMAX 0 to 1.5 7 9.5 0.3 11 0.9 On Resistance Flatness (RFLAT(ON)) 2.6 5 LEAKAGE CURRENTS Source Off Leakage, IS (Off) Drain Off Leakage, ID (Off) Channel On Leakage, ID, IS (On) DIGITAL INPUTS Input High Voltage, VINH Input Low Voltage, VINL Input Current IINL or IINH Digital Input Capacitance, CIN DYNAMIC CHARACTERISTICS2 tON, tON (EN) ±0.001 ±0.001 ±0.001 3 ns typ ns max ns typ ns max ns typ ns min dB typ dB typ MHz typ % typ pC typ pF typ pF typ pF typ CL = 35 pF; RL = 50 Ω VS = 1.5 V; Figure 9 CL = 35 pF; RL = 50 Ω VS = 1.5 V; Figure 9 CL = 35 pF; RL = 50 Ω VS1 = VS2 = 1.5 V; Figure 10 f = 10 MHz; RL = 50 Ω; Figure 12 f = 10 MHz; RL = 50 Ω; Figure 13 RL = 50 Ω; Figure 11 RL = 100 Ω CL = 1 nF; VS = 0 V; Figure 14 −65 −70 300 2.6 4 6 7.5 13.5 VDD = 3.3 V; digital inputs = 0 V or VDD 0.001 1 2 VS = 2 V/1 V; VD = 1 V/2 V; Figure 7 VS = 2 V/1 V; VD = 1 V/2 V; Figure 7 VD = VS = 2 V/1 V; Figure 8 VIN = VINL or VINH 1 1 nA typ nA typ nA typ VD = 0 V to 1 V; IS = −10 mA µA typ µA max pF typ 10 Off Isolation Channel-to-Channel Crosstalk Bandwidth −3 dB Distortion Charge Injection CS (Off) CD (Off) CD, CS (On) POWER REQUIREMENTS IDD VD = 0 V to 1 V; IS = −10 mA VD = 0 V to 1 V; IS = −10 mA; Figure 6 ±0.1 3 16 Break-Before-Make Time Delay, tD V Ω typ Ω max Ω typ Ω max Ω typ Ω max V min V max 8 6 Test Conditions/Comments 2.0 0.4 0.001 tOFF, tOFF (EN) Unit Temperature range for B Version is −40°C to +85°C. Guaranteed by design, not subject to production test. Rev. 0 | Page 4 of 12 µA typ µA max ADG794 ABSOLUTE MAXIMUM RATINGS TA = 25°C, unless otherwise noted. Table 3. Parameters VDD to GND Analog, Digital Inputs1 Continuous Current, S or D Peak Current, S or D Operating Temperature Range Industrial (B Version) Storage Temperature Range Junction Temperature QSOP Package, Power Dissipation θJA Thermal Impedance Lead Temperature, Soldering Vapor Phase (60 s) Infrared (15 s) 1 Ratings −0.3 V to +6 V −0.3 V to VDD + 0.3 V or 30 mA, whichever occurs first 100 mA 300 mA (pulsed at 1 ms, 10% duty cycle max) 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 listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Only one absolute maximum rating may be applied at any one time. Table 4. Truth Table −40°C to +85°C −65°C to +150°C 150°C 566 mW 149.97°C/W EN IN D1 D2 D3 D4 Function 1 0 0 X 0 1 Hi-Z S1A S1B Hi-Z S2A S2B Hi-Z S3A S3B Hi-Z S4A S4B Disable IN = 0 IN = 1 215°C 220°C Overvoltages at IN, S, or D are clamped by internal diodes. Current should be limited to the maximum ratings given. ESD CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. Rev. 0 | Page 5 of 12 ADG794 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS IN 1 16 VDD S1A 2 15 EN ADG794 14 S4A TOP VIEW (Not to Scale) 13 S4B S2A 5 12 D4 S2B 6 11 S3A D2 7 10 GND 8 9 D1 4 S3B D3 05150-002 S1B 3 Figure 2. Pin Configuration Table 5. Pin Function Descriptions Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Mnemonic IN S1A S1B D1 S2A S2B D2 GND D3 S3B S3A D4 S4B S4A EN VDD Description Logic Control Input. The logic level at this input controls the operation of the multiplexers (see Table 4). A-Side Source Terminal of MUX1. Can be an input or output. B-Side Source Terminal of MUX1. Can be an input or output. Drain Terminal of MUX1. Can be an input or output. A-Side Source Terminal of MUX2. Can be an input or output. B-Side Source Terminal of MUX2. Can be an input or output. Drain Terminal of MUX2. Can be an input or output. Ground Reference. Drain Terminal of MUX3. Can be an input or output. B-Side Source Terminal of MUX3. Can be an input or output. A-Side Source Terminal of MUX3. Can be an input or output. Drain Terminal of MUX4. Can be an input or output. B-Side Source Terminal of MUX4. Can be an input or output. A-Side Source Terminal of MUX4. Can be an input or output. MUX Enable Logic Input. Enables or disables the multiplexers (see Table 4). Positive Power Supply Voltage. Rev. 0 | Page 6 of 12 ADG794 TERMINOLOGY VDD Most positive power supply potential. CS (Off) Off switch source capacitance. Measured with reference to ground. IDD Positive supply current. CD (Off) Off switch drain capacitance. Measured with reference to ground. GND Ground (0 V) reference. CD, CS (On) On switch capacitance. Measured with reference to ground. S Source terminal. Can be either an input or an output. CIN Digital input capacitance. D Drain terminal. Can be either an input or an output. tON Delay time between the 50% and the 90% points of the digital input and switch on condition. IN Logic control input. VD (VS) Analog voltage on terminals D, S. tOFF Delay time between the 50% and the 90% points of the digital input and switch off condition. RON Ohmic resistance between D and S. RFLAT (ON) Flatness is defined as the difference between the maximum and minimum value of on resistance as measured. tBBM On or off time measured between the 80% points of both switches when switching from one to another. ∆RON On resistance match between any two channels. Charge Injection A measure of the glitch impulse transferred from the digital input to the analog output during on/off switching. IS (Off) Source leakage current with the switch off. Off Isolation A measure of unwanted signal coupling through an off switch. ID (Off) Drain leakage current with the switch off. Crosstalk A measure of unwanted signal that is coupled through from one channel to another as a result of parasitic capacitance. ID, IS (On) Channel leakage current with the switch on. VINL Maximum input voltage for Logic 0. VINH Minimum input voltage for Logic 1. IINL (IINH) Input current of the digital input. −3 dB Bandwidth The frequency at which the output is attenuated by 3 dB. On Response The frequency response of the on switch. Insertion Loss The loss due to the on resistance of the switch. THD + N The ratio of the harmonic amplitudes plus noise of a signal to the fundamental. Rev. 0 | Page 7 of 12 ADG794 0 0 –20 –20 ATTENUATION (dB) –40 –60 –40 –60 –80 –100 0.01 05150-003 –80 0.1 1 10 100 –100 0.01 1000 05150-004 ATTENUATION (dB) TYPICAL PERFORMANCE CHARACTERISTICS 0.1 1 10 FREQUENCY (MHz) FREQUENCY (MHz) Figure 4. Crosstalk vs. Frequency Figure 3. Off Isolation vs. Frequency TYPICAL APPLICATION ADG794 R R OUTPUT G RGB VIDEO SIGNAL SOURCE 1 G OUTPUT B OUTPUT B AUDIO/SYNC/ OTHER OUTPUT AUDIO/SYNC/OTHER SIGNAL SOURCE 1 R G RGB VIDEO SIGNAL SOURCE 2 EN IN 05150-005 B AUDIO/SYNC/OTHER SIGNAL SOURCE 2 Figure 5. Audio/Video Switch Rev. 0 | Page 8 of 12 100 1000 ADG794 TEST CIRCUITS IDS V1 D A VD VS Figure 6. On Resistance S NC D VD NC = NO CONNECT Figure 7. Off Leakage Figure 8. On Leakage 5V 0.1µF VIN 3V VDD S 50% 50% VOUT D 90% VS CL 35pF RL 100Ω IN 90% VOUT tOFF 05150-009 tON GND EN Figure 9. Switching Times 5V 0.1µF VDD 3V S1A VOUT D1 RL 100Ω VS CL 35pF 50% 50% 0V VOUT 50% 50% VS DECODER tD EN tD GND 05150-010 IN Figure 10. Break-Before-Make Time Delay VDD 0.1µF ADG794 NETWORK ANALYZER S1A 50Ω VS IN VIN D1 EN GND VOUT 50Ω 05150-011 VS VIN S1B Figure 11. Bandwidth Rev. 0 | Page 9 of 12 A 05150-008 RON = V1/IDS ID (ON) ID (OFF) S A 05150-006 VS IS (OFF) D 05150-007 S ADG794 VDD 0.1µF ADG794 NETWORK ANALYZER S1A 50Ω 50Ω VS IN VIN VOUT D1 EN 50Ω 05150-012 GND Figure 12. Off Isolation VDD 0.1µF NETWORK ANALYZER ADG794 S1A 50Ω VS VOUT S2A RL 50Ω IN D2 D1 VIN 50Ω 50Ω GND 05150-013 EN Figure 13. Channel-to-Channel Crosstalk 5V VDD ADG794 VS S1A CL 1nF S1B S2A CL 1nF S2B S3A CL 1nF S3B S4A CL 1nF S4B D1 VOUT 3V VEN D2 VOUT VOUT D3 VOUT ∆VOUT QINJ = CL × ∆VOUT D4 VOUT 1 OF 2 DECODER EN IN 05150-014 RS Figure 14. Charge Injection Rev. 0 | Page 10 of 12 Preliminary Technical Data ADG794 OUTLINE DIMENSIONS 0.193 (4.90) BSC 9 16 0.154 (3.91) BSC 1 8 0.236 (5.99) BSC PIN 1 0.069 (1.75) 0.053 (1.35) 0.065 (1.65) 0.049 (1.24) 0.010 (0.25) 0.025 (0.14) 0.012 (0.30) 0.004 (0.10) SEATING BSC 0.008 (0.20) PLANE COPLANARITY 0.004 (0.10) 0.010 (0.25) 0.006 (0.15) 8° 0° 0.050 (1.27) 0.016 (0.41) COMPLIANT TO JEDEC STANDARDS MO-137AB CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETERS DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN Figure 15. 16-Lead Shrink Small Outline Package [QSOP] (RQ-16) Dimensions shown in inches and (millimeters) ORDERING GUIDE Model ADG794BRQZ1 ADG794BRQZ-500RL71 ADG794BRQZ-REEL1 ADG794BRQZ-REEL71 1 Temperature Range −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C Package Description 16-Lead Shrink Small Outline Package (QSOP) 16-Lead Shrink Small Outline Package (QSOP) 16-Lead Shrink Small Outline Package (QSOP) 16-Lead Shrink Small Outline Package (QSOP) Z = Pb-free part. Rev. 0 | Page 11 of 12 Package Option RQ-16 RQ-16 RQ-16 RQ-16 ADG794 NOTES © 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05150–0–10/04(0) Rev. 0 | Page 12 of 12