MAX4027EUD+T

19-2987; Rev 0; 9/03 225MHz, Triple, 2-Channel Video Multiplexer-Amplifier Applications Video Source Selection (Multiplexing) Features ♦ Excellent Video Specifications: 75MHz Small-Signal 0.1dB Gain Flatness 62MHz Large-Signal 0.1dB Gain Flatness 0.012%/0.014° Differential Gain/Phase Error ♦ VGA to UXGA Resolution ♦ High Speed: 200MHz 2VP-P -3dB Bandwidth 1100V/µs Slew Rate 15ns Settling Time to 0.1% ♦ Internal Gain of 2V/V Compensates for Output Back Termination ♦ Fast Switching: 15ns Channel-Switching Time 260mVP-P Switching Transient ♦ Drives Two Back-Terminated Video Loads ♦ High-Impedance Output Disable Picture in Picture (PIP) Insertion Ordering Information Crosspoint Expansion Coaxial Cable Drivers Supports VGA to UXGA (1600 x 1200) Resolution Enterprise Class (Blade) Servers PART TEMP RANGE PIN-PACKAGE MAX4027ESD -40°C to +85°C 14 SO MAX4027EUD -40°C to +85°C 14 TSSOP Keyboard-Video-Mouse (KVM) Pin Configuration Typical Operating Circuit TOP VIEW MAX4027 VIDEO R SOURCE G 1 B VIDEO R SOURCE G 2 B x2 IN1A IN2A IN3A IN1B IN2B IN3B TRIPLE 2:1 MUX x2 OUT1 OUT2 R G 14 A/B IN1A 1 IN2A 2 IN3A 3 GND 4 13 OUT1 12 VCC MAX4027 IN1B 5 x2 OUT3 B 11 OUT2 10 VEE IN2B 6 9 OUT3 IN3B 7 8 EN SO/TSSOP A/B EN ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX4027 General Description The MAX4027 is a triple, wideband, 2-channel, noninverting gain-of-two video amplifier with input multiplexing, capable of driving up to two back-terminated video loads. The MAX4027 features current-mode feedback amplifiers configured for a gain of two (+6dB) with a -3dB large-signal bandwidth of 200MHz. The device has low (0.012%/0.014°) differential gain and phase errors, and operates from ±5V supplies. The MAX4027 is ideal for use in broadcast and graphics video systems because of the low 2pF input capacitance, channel-to-channel switching time of only 15ns, and wide 62MHz, large-signal 0.1dB bandwidth. Highimpedance output disabling allows the MAX4027 to be incorporated into large switching arrays with minimal interaction with the source. Specified over the -40°C to +85°C extended temperature range, the MAX4027 is available in 14-pin SO and TSSOP packages. MAX4027 225MHz, Triple, 2-Channel Video Multiplexer-Amplifier ABSOLUTE MAXIMUM RATINGS Positive Supply Voltage (VCC to GND) ..................................+6V Negative Supply Voltage (VEE to GND) ..................................-6V Amplifier Input Voltage (IN_ _) .........(VEE - 0.3V) to (VCC + 0.3V) Digital Input Voltage (EN, A/B) ...................-0.3V to (VCC + 0.3V) Output Short Circuit to GND (Note 1).........................Continuous Output Short Circuit to VCC or VEE ...........................................5s Continuous Power Dissipation (TA = +70°C) 14-Pin TSSOP (derate 9.1mW/°C above +70°C) .........727mW 14-Pin SO (derate 8.3mW/°C above +70°C)................667mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Junction Temperature .....................................................+150°C Lead Temperature (soldering, 10s) .................................+300°C Note 1: Continuous power-dissipation rating must also be observed. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DC ELECTRICAL CHARACTERISTICS (VCC = 5V, VEE = -5V, VIN_ _ = 0V, RL = 150Ω to GND, TA = -40°C to +85°C. Typical values are at TA = +25°C.) (Note 2) PARAMETER Operating Supply Voltage Range SYMBOL VCC VEE Positive Supply Current ICC Negative Supply Current IEE Input Voltage Range Input Offset Voltage Input Offset-Voltage Matching VIN_ _ VOS ∆VOS Voltage Gain Input Offset-Voltage Temperature Coefficient AV IB Input Resistance Disabled Output Resistance Inferred from the PSRR test MIN TYP MAX +4.5 +5.0 +5.5 -4.5 -5.0 -5.5 EN = GND 31 39 EN = 5V 17 24 EN = GND 28 36 EN = 5V 15 21 Inferred from voltage gain ±1.25 TA = +25°C RIN TA = -40°C to +85°C Channel to channel VOUT_ = ±2.5V 1.9 ROUT(d) PSRR Output Voltage Swing VOUT_ Output Short-Circuit Current mA mA mV ±1 ±12 mV 2.1 V/V ±2 TA = -40°C to +85°C VIN_ _ = -1.25V to +1.25V V 2.0 1 TA = +25°C UNITS V ±6 ±11 µV/°C ±10 ±18 µA Channel on 100 400 kΩ Channel off 1 20 MΩ 10 mΩ ROUT DC Power-Supply Rejection Ratio ±1.75 ±1 TCVOS Input Bias Current DC Output Resistance CONDITIONS EN = 5V, VOUT_ = -2.5V to +2.5V (Note 3) VCC = +4.5V to +5.5V, VEE = -4.5V to -5.5V 1.6 kΩ 60 86 dB ±2.5 ±3.5 V ±143 mA ISC LOGIC CHARACTERISTICS (EN, A/B) Logic-Low Threshold VIL Logic-High Threshold VIH Logic-Low Input Current IIL VIL = 0V Logic-High Input Current IIH VIH = +5.5V, VCC = +5.5V 2 0.8 V -4 -20 µA 350 600 µA 2.0 V _______________________________________________________________________________________ 225MHz, Triple, 2-Channel Video Multiplexer-Amplifier MAX4027 AC ELECTRICAL CHARACTERISTICS (VCC = 5V, VEE = -5V, VIN_ _ = 0V, RIN = 75Ω to GND, RL = 150Ω to GND, TA = +25°C, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS AMPLIFIER CHARACTERISTICS Small-Signal -3dB Bandwidth Small-Signal Bandwidth for ±0.1dB Gain Flatness Large-Signal -3dB Bandwidth Large-Signal Bandwidth for ±0.1dB Gain Flatness BWSS VIN_ _ = 20mVP-P 225 MHz BWLS(0.1) VIN_ _ = 20mVP-P 75 MHz VIN_ _ = 1VP-P 200 MHz BWLS(0.1) VIN_ _ = 1VP-P 62 MHz BWLS Slew Rate SR VIN_ _ = 1VP-P 1100 V/µs Settling Time to 0.1% tS VIN_ _ = 1VP-P 15 ns Differential Gain Error DG 5-step modulated staircase (Note 4) 0.012 % Differential Phase Error DP 5-step modulated staircase (Note 4) 0.014 degrees Delay Between Channels tD VIN_ _ = 1VP-P, tR = 100ps 0.1 ns VIN_ _ = ±1VP-P, f = 10MHz -61 dB VIN_ _ = ±1VP-P, f = 10MHz -80 dB 1 Ω Channel-to-Channel Crosstalk XTALK A/B Crosstalk Output Impedance ZOUT f = 10MHz Total Harmonic Distortion THD VOUT_ = 2VP-P, f = 10MHz 64 dBc Off-Isolation AISO VOUT_ = 2VP-P, f = 10MHz, RS = 75Ω -83 dB Output Capacitance COUT Channel on or off 3 pF Input Capacitance CIN Channel on or off 2 pF Input-Voltage Noise Density en f = 100kHz 6.5 nV/√Hz Input-Current Noise Density in f = 100kHz 6.5 pA/√Hz Channel-Switching Time tSW (Notes 5, 6) 15 ns Enable Delay Time tPDE (Notes 5, 7) 20 ns Disable Delay Time tPDD (Notes 5, 7) 25 ns Switching Transient VTRAN (Note 8) 260 mVP-P SWITCHING CHARACTERISTICS Limits are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by design. Disabled output resistance includes the internal feedback network. Input test signal is NTSC composite with 5-step staircase, of 40 IRE per step, modulated with 3.58MHz color subcarrier. See the Timing Diagram (Figure 2). Channel-switching time specified for switching between input channels; does not include signal rise/fall times for switching between channels with different input voltages. Note 7: Output enable/disable delay times do not include amplifier output slewing times. Note 8: Switching transient measured while switching between two grounded channels. Note 2: Note 3: Note 4: Note 5: Note 6: _______________________________________________________________________________________ 3 Typical Operating Characteristics (VCC = +5V, VEE = -5V, RL = 150Ω to GND, TA = +25°C, unless otherwise noted.) SMALL-SIGNAL GAIN FLATNESS vs. FREQUENCY -0.1 -1 -3 -0.2 -0.3 -3 -0.4 -4 -5 -0.5 -5 -6 -0.6 -6 -7 -0.7 -7 100M 1G LARGE-SIGNAL GAIN FLATNESS vs. FREQUENCY CHANNEL-TO-CHANNEL GAIN MATCHING vs. FREQUENCY VOUT_ = 2VP-P 0 -0.1 -0.2 VOUT_ = 4VP-P -0.4 -0.5 -0.6 0.5 0.4 VOUT_ = 2VP-P 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 -0.7 1M 10M 1M 1G 100M 100M 10M FREQUENCY (Hz) FREQUENCY (Hz) POWER-SUPPLY REJECTION RATIO vs. FREQUENCY OFF-ISOLATION vs. FREQUENCY -20 OFF-ISOLATION (dB) -30 -35 -40 -45 PSRR-50 100M 1G DIFFERENTIAL GAIN AND PHASE 0.020 0.010 0 -0.010 -0.020 1st 2nd 3rd 4th 5th 6th 1st 2nd 3rd 4th 5th 6th 0.020 0.010 0 -0.010 -0.020 CHANNEL-TO-CHANNEL CROSSTALK vs. FREQUENCY 0 -10 -20 -40 CROSSTALK (dB) -25 10M 1M MAX4027 toc08 0 MAX4027 toc07 -20 VOUT_ = 4VP-P FREQUENCY (Hz) MAX4027 toc05 MAX4027 toc04 0.1 -0.3 10M FREQUENCY (Hz) AV = +2V/V 0.2 1M DIFFERENTIAL GAIN (%) 1G DIFFERENTIAL PHASE (DEG) 100M FREQUENCY (Hz) MAX4027 toc03 -2 -4 10M VOUT_ = 2VP-P MAX4027 toc06 -2 GAIN (dB) -1 GAIN (dB) 0 0.3 -60 -80 -30 -40 -50 -60 -55 -100 -60 -70 PSRR+ -65 -120 100k 1M 10M FREQUENCY (Hz) 4 1 0 1M GAIN (dB) 0.1 AV = +2V/V 2 0 CHANNEL-TO-CHANNEL GAIN MATCHING (dB) GAIN (dB) 1 VIN_ _ = 20mVP-P AV = +2V/V 0.2 3 MAX4027 toc02 VIN_ _ = 20mVP-P AV = +2V/V 2 LARGE-SIGNAL FREQUENCY RESPONSE 0.3 MAX4027 toc01 3 MAX4027 toc09 SMALL-SIGNAL FREQUENCY RESPONSE PSRR (dB) MAX4027 225MHz, Triple, 2-Channel Video Multiplexer-Amplifier 100M -80 1M 10M 100M FREQUENCY (Hz) 1G 100k 1M 10M FREQUENCY (Hz) _______________________________________________________________________________________ 100M 1G 225MHz, Triple, 2-Channel Video Multiplexer-Amplifier -40 -60 -80 VOUT_ = 2VP-P -30 10 -40 THD (dBc) OUTPUT IMPEDANCE (Ω) -20 -20 MAX4027 toc11 100 MAX4027 toc10 0 CROSSTALK (dB) TOTAL HARMONIC DISTORTION vs. FREQUENCY OUTPUT IMPEDANCE vs. FREQUENCY MAX4027 toc12 A/B CROSSTALK vs. FREQUENCY 1 -50 -60 -70 0.1 -100 -80 0.01 -120 100k 1M 10M 100M -90 100k 1G FREQUENCY (Hz) 1M 10M 100M 1G 1M FREQUENCY (Hz) LARGE-SIGNAL PULSE RESPONSE MAX4027 toc14 VIN_ _ 500mV/div MAX4027 toc15 VIN_ _ 50mV/div VIN_ _ 500mV/div 0V VOUT_ 1V/div 0V VOUT_ 100mV/div 0V 10ns/div 0V 10ns/div SMALL-SIGNAL PULSE RESPONSE (CLOAD = 20pF) 10ns/div ENABLE RESPONSE TIME A/B SWITCHING TRANSIENT MAX4027 toc17 MAX4027 toc16 MAX4027 toc18 EN 2.5V/div A/B 2.5V/div 0V 0V VOUT_ 1V/div VOUT_ 100mV/div 0V VOUT_ 100mV/div 0V 0V 0V 10ns/div 0V VOUT_ 1V/div 0V VIN_ _ 50mV/div 100M LARGE-SIGNAL PULSE RESPONSE (CLOAD = 20pF) SMALL-SIGNAL PULSE RESPONSE MAX4027 toc13 10M FREQUENCY (Hz) 20ns/div 20ns/div _______________________________________________________________________________________ 5 MAX4027 Typical Operating Characteristics (continued) (VCC = +5V, VEE = -5V, RL = 150Ω to GND, TA = +25°C, unless otherwise noted.) Typical Operating Characteristics (continued) (VCC = +5V, VEE = -5V, RL = 150Ω to GND, TA = +25°C, unless otherwise noted.) INPUT BIAS CURRENT vs. TEMPERATURE INPUT BIAS CURRENT (µA) 33 4.5 32 31 30 29 28 4.0 3.5 3.0 2.5 2.0 1.5 27 1.0 26 0.5 25 -50 -25 0 25 50 -50 TEMPERATURE (°C) -25 0 25 50 75 4.0 3.5 3.0 -50 100 -25 TEMPERATURE (°C) 50 4 MAX4027 toc23 -3.0 25 INPUT OFFSET VOLTAGE vs. TEMPERATURE MAX4027 toc22 -2.5 0 TEMPERATURE (°C) NEGATIVE OUTPUT SWING vs. TEMPERATURE 3 2 RLOAD = 50Ω -3.5 VOS (mV) NEGATIVE OUTPUT SWING (V) 4.5 2.5 0 100 75 5.0 MAX4027 toc21 34 MAX4027 toc20 5.0 MAX4027 toc19 35 POSITIVE OUTPUT SWING vs. TEMPERATURE POSITIVE OUTPUT SWING (V) SUPPLY CURRENT vs. TEMPERATURE SUPPLY CURRENT (mA) RLOAD = 150Ω -4.0 1 0 -1 NO LOAD -2 -4.5 -3 -5.0 -25 0 25 50 75 -4 100 -50 TEMPERATURE (°C) 0 25 50 75 100 TEMPERATURE (°C) OUTPUT SHORT-CIRCUIT CURRENT vs. TEMPERATURE SOURCING AND SINKING 155 SMALL-SIGNAL BANDWIDTH vs. FREQUENCY 3 MAX4027 toc24 160 VIN_ _ = 20mVP-P AV = +2V/V 2 15pF 1 150 10pF GAIN (dB) 0 145 140 -1 0pF -2 -3 5pF -4 135 -5 130 -6 125 -7 -50 -25 0 25 50 TEMPERATURE (°C) 6 -25 MAX4027 toc25 -50 OUTPUT SHORT-CIRCUIT CURRENT (mA) MAX4027 225MHz, Triple, 2-Channel Video Multiplexer-Amplifier 75 100 1M 10M 100M FREQUENCY (Hz) _______________________________________________________________________________________ 1G 75 100 225MHz, Triple, 2-Channel Video Multiplexer-Amplifier PIN NAME 1 IN1A Amplifier 1 Channel A Input 2 IN2A Amplifier 2 Channel A Input 3 IN3A Amplifier 3 Channel A Input 4 GND Power Supply, Analog and Digital Ground. Connect GND to ground plane for best RF performance. 5 IN1B Amplifier 1 Channel B Input 6 IN2B Amplifier 2 Channel B Input 7 IN3B Amplifier 3 Channel B Input 8 EN 9 OUT3 10 VEE 11 OUT2 12 VCC 13 OUT1 14 A/B FUNCTION Output Enable Logic Input. Drive EN low or leave open for normal operation. Pull EN high to disconnect amplifier output (output is high impedance when disabled). EN is internally pulled to GND through a 17kΩ resistor. Amplifier Output 3 Negative Power-Supply Voltage. Bypass VEE to GND with a 0.1µF capacitor. Amplifier Output 2 Positive Power-Supply Voltage. Bypass VCC to GND with a 0.1µF capacitor. Amplifier Output 1 Channel-Select Input. Drive A/B low or leave open to select channel A for all amplifiers. Pull A/B high to select channel B for all amplifiers. A/B is internally pulled to GND through a 17kΩ resistor. Detailed Description The MAX4027 combines three 2:1 multiplexers with +2V/V (+6dB) closed-loop gain (AVCL) amplifiers. This low-power, high-speed device operates from ±5V supplies, while driving up to two back-terminated video loads with very low distortion. Differential gain and phase errors are 0.012%/0.014° for the MAX4027. The input multiplexers feature fast 15ns channelswitching times and small switching transients. The multiplexers also feature high input resistance and constant input capacitance, so overall input impedance can be set by external input-terminating resistors. Drive EN high to place the amplifier outputs in a highimpedance state, and minimize the supply current. This function allows use of multiple mux/amps in parallel to form large switching arrays. The MAX4027 features an A/B input, which selects either channel A or B. Drive A/B low to select channel A or drive A/B high to select channel B. Channel A is automatically selected if A/B is left unconnected. Truth Tables Table 1. Input Control Logic A/B AMPLIFIER INPUT FUNCTION 0 IN_A Channel A Selected 1 IN_B Channel B Selected Table 2. Output Control Logic EN AMPLIFIER OUTPUT FUNCTION 0 On Outputs Enabled 1 Off Outputs High Impedance Applications Information Disable Mode Drive EN high to place the MAX4027 in disable mode. Placing the device in disable mode reduces the quiescent current to 17mA (VCC) and 15mA (VEE) and places the amplifier outputs into a high-impedance state, typi- _______________________________________________________________________________________ 7 MAX4027 Pin Description MAX4027 225MHz, Triple, 2-Channel Video Multiplexer-Amplifier cally 1.6kΩ. Parallel multiple devices to construct larger switch matrices by connecting the outputs of several devices together and disabling all but one of the paralleled amplifiers’ outputs. Two internal 800Ω thin-film resistors set the MAX4027 to a fixed gain of +2. Consider the impedance of the internal feedback resistors when operating multiple MAX4027s in large multiplexer applications. Drive EN low for normal operation. EN has internal pulldown circuitry. The MAX4027 is enabled when EN is unconnected. Video Line Driver The MAX4027 is well suited to drive short coaxial transmission lines when the cable is terminated at both ends (Figure 1) where the fixed gain of +2 compensates for the loss in the back termination. Cable frequency response may cause variations in the flatness of the signal. Input Voltage Range The guaranteed input voltage range is ±1.25V. Exceeding this value can cause unpredictable results, including output clipping, excessive input current, and switching delays. Multiplexer The input multiplexer (mux) is controlled by a 3.3V TTL/CMOS-compatible control input (see the Truth Tables). Input capacitance is a constant, low 2pF and input resistance is 17kΩ to GND for all input channels, regardless of whether or not the channel is selected. All logic levels (EN and A/B) default low if left unconnected. A/B Layout and Power-Supply Bypassing The MAX4027 has an extremely high bandwidth and requires careful board layout. For best performance, use constant-impedance microstrip or stripline techniques. To realize the full AC performance of these high-speed amplifiers, pay careful attention to power-supply bypassing and board layout. The PC board should have at least two layers: a signal and power layer on one side, and a large, low-impedance ground plane on the other side. The ground plane should be as free of voids as possible. With multilayer boards, locate the ground plane on an internal layer that incorporates no signal or power traces. Observe the following guidelines when designing the board regardless of whether or not a constant-impedance board is used. 1) Do not use wire-wrap boards or breadboards. 2) Do not use IC sockets; they increase parasitic capacitance and inductance. 3) Keep lines as short and as straight as possible. Do not make 90° turns; round all corners. 4) Observe high-frequency bypassing techniques to maintain the amplifier’s accuracy and stability. 5) Use surface-mount components. They generally have shorter bodies and lower parasitic reactance, yielding better high-frequency performance than through-hole components. The bypass capacitors should include a 0.1µF ceramic surface-mount capacitor between each supply pin and the ground plane, located as close to the package as EN 75Ω CABLE IN_A OUT_ RT 75Ω RT 75Ω 75Ω CABLE RT 75Ω 75Ω CABLE IN_B RT 75Ω MAX4027 Figure 1. Video Line Driver 8 _______________________________________________________________________________________ 225MHz, Triple, 2-Channel Video Multiplexer-Amplifier Functional Diagram A/B VCC EN IN1A MUX1 IN1B OUT1 TO A/B TO EN IN2A MUX2 IN2B OUT2 A/B tSW CHANNEL A OUT TO A/B tSW CHANNEL B CHANNEL A TO EN IN3A MUX3 IN3B OUT3 EN tPDD OUT tPDE MAX4027 HIGH IMPEDANCE GND VEE Figure 2. Switching Timing Diagram Chip Information TRANSISTOR COUNT: 870 PROCESS: Bipolar _______________________________________________________________________________________ 9 MAX4027 possible. Optionally, place a 10µF tantalum capacitor at the power-supply pins’ points of entry to the PC board to ensure the integrity of incoming supplies. The power-supply trace should lead directly from the tantalum capacitor to the VCC and VEE pins. Use surface-mount resistors for input termination and output back termination. Place the termination resistors as close to the IC as possible. Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) DIM A A1 B C e E H L N E H INCHES MILLIMETERS MAX MIN 0.069 0.053 0.010 0.004 0.014 0.019 0.007 0.010 0.050 BSC 0.150 0.157 0.228 0.244 0.016 0.050 MAX MIN 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 1.27 BSC 3.80 4.00 5.80 6.20 0.40 SOICN .EPS MAX4027 225MHz, Triple, 2-Channel Video Multiplexer-Amplifier 1.27 VARIATIONS: 1 INCHES TOP VIEW DIM D D D MIN 0.189 0.337 0.386 MAX 0.197 0.344 0.394 MILLIMETERS MIN 4.80 8.55 9.80 MAX 5.00 8.75 10.00 N MS012 8 AA 14 AB 16 AC D A B e C 0 -8 A1 L FRONT VIEW SIDE VIEW PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE, .150" SOIC APPROVAL DOCUMENT CONTROL NO. 21-0041 10 ______________________________________________________________________________________ REV. B 1 1 225MHz, Triple, 2-Channel Video Multiplexer-Amplifier TSSOP4.40mm.EPS Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11 © 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. MAX4027 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.)