19-1379; Rev 1; 4/99 NUAL KIT MA ATION EET H S A EVALU T WS DA FOLLO High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers The MAX4310–MAX4315 single-supply mux-amps combine high-speed operation, low-glitch switching, and excellent video specifications. The six products in this family are differentiated by the number of multiplexer inputs and the gain configuration. The MAX4310/MAX4311/MAX4312 integrate 2-/4-/8-channel multiplexers, respectively, with an adjustable gain amplifier optimized for unity-gain stability. The MAX4313/MAX4314/MAX4315 integrate 2-/4-/8-channel multiplexers, respectively, with a +2V/V fixed-gain amplifier. All devices have 40ns channel switching time and low 10mVp-p switching transients, making them ideal for video-switching applications. They operate from a single +4V to +10.5V supply, or from dual supplies of ±2V to ±5.25V, and they feature Rail-to-Rail® outputs and an input common-mode voltage range that extends to the negative supply rail. The MAX4310/MAX4311/MAX4312 have a -3dB bandwidth of 280MHz/345MHz/265MHz and up to a 460V/µs slew rate. The MAX4313/MAX4314/MAX4315, with 150MHz/127MHz/ 97MHz -3dB bandwidths up to a 540V/µs slew rate, and a fixed gain of +2V/V, are ideally suited for driving backterminated cables. Quiescent supply current is as low as 6.1mA, while low-power shutdown mode reduces supply current to as low as 560µA and places the outputs in a high-impedance state. The MAX4310–MAX4315’s internal amplifiers maintain an open-loop output impedance of only 8Ω over the full output voltage range, minimizing the gain error and bandwidth changes under loads typical of most rail-to-rail amplifiers. With differential gain and phase errors of 0.06% and 0.08°, respectively, these devices are ideal for broadcast video applications. Applications Video Signal Multiplexing Video Crosspoint Switching Flash ADC Input Buffers Broadcast Video Medical Imaging Multimedia Products 75Ω Video Cable Drivers High-Speed Signal Processing Features ♦ Single-Supply Operation Down to +4V ♦ 345MHz -3dB Bandwidth (MAX4311) 150MHz -3dB Bandwidth (MAX4313) ♦ 540V/µs Slew Rate (MAX4313) ♦ Low 6.1mA Quiescent Supply Current ♦ 40ns Channel Switching Time ♦ Ultra-Low 10mVp-p Switching Transient ♦ 0.06%/0.08° Differential Gain/Phase Error ♦ Rail-to-Rail Outputs: Drives 150Ω to within 730mV of the Rails ♦ Input Common-Mode Range Includes Negative Rail ♦ Low-Power Shutdown Mode ♦ Available in Space-Saving 8-Pin µMAX and 16-Pin QSOP Packages Ordering Information PART MAX4310EUA MAX4310ESA MAX4311EEE MAX4311ESD MAX4312EEE MAX4312ESE MAX4313EUA MAX4313ESA MAX4314EEE MAX4314ESD MAX4315EEE MAX4315ESE TEMP. RANGE PIN-PACKAGE -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C 8 µMAX 8 SO 16 QSOP 14 Narrow SO 16 QSOP 16 Narrow SO 8 µMAX 8 SO 16 QSOP 14 Narrow SO 16 QSOP 16 Narrow SO Pin Configurations and Typical Operating Circuit appear at end of data sheet. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. Selector Guide PART NO. OF INPUT CHANNELS AMPLIFIER GAIN (V/V) MAX4310 MAX4311 MAX4312 MAX4313 MAX4314 MAX4315 2 4 8 2 4 8 ≥ +1 ≥ +1 ≥ +1 +2 +2 +2 PIN-PACKAGE 8-Pin SO/µMAX 14-Pin Narrow SO, 16-Pin QSOP 16-Pin Narrow SO/QSOP 8-Pin SO/µMAX 14-Pin Narrow SO, 16-Pin QSOP 16-Pin Narrow SO/QSOP ________________________________________________________________ Maxim Integrated Products 1 For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. MAX4310–MAX4315 General Description MAX4310–MAX4315 High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers ABSOLUTE MAXIMUM RATINGS Supply Voltage (VCC to VEE) ..................................................12V Input Voltage....................................(VEE - 0.3V) to (VCC + 0.3V) All Other Pins ...................................(VEE - 0.3V) to (VCC + 0.3V) Output Current................................................................±120mA Short-Circuit Duration (VOUT to GND, VCC or VEE) ....Continuous Continuous Power Dissipation (TA = +70°C) 8-Pin SO (derate 5.9mW/°C above +70°C)...................471mW 8-Pin µMAX (derate 4.1mW/°C above +70°C) ..............330mW 14-Pin SO (derate 8.3mW/°C above +70°C).................667mW 16-Pin SO (derate 8.7mW/°C above +70°C).................696mW 16-Pin QSOP (derate 8.3mW/°C above +70°C)............667mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10sec) .............................+300°C 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 = 0, SHDN ≥ 4V, RL = ∞, VOUT = 2.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER Operating Supply Voltage Range SYMBOL VCC Input Voltage Range Common-Mode Rejection Ratio Input Offset Voltage Input Offset Voltage Drift CMRR CONDITIONS Inferred from PSRR test MIN TYP 4.0 MAX UNITS 10.5 V MAX4310/MAX4311/MAX4312, inferred from CMRR test 0.035 VCC - 2.8 MAX4313/MAX4314/1MAX4315, inferred from output voltage swing 0.035 VCC - 2.7 0 ≤ VCM ≤ 2.2V, MAX4310/MAX4311/MAX4312 only V 73 95 dB dB VOS ±5.0 TCVOS ±7 µV/°C ±1 mV Input Offset Voltage Matching ±20 mV Input Bias Current IB IIN_ 7 14 µA Feedback Bias Current IFB IFB, MAX4310/MAX4311/MAX4312 only 7 14 µA Input Offset Current 0.1 2 µA IOS MAX4310/MAX4311/MAX4312 only Common-Mode Input Resistance RIN VIN varied over VCM, MAX4310/MAX4311/ MAX4312 only Differential Input Resistance RIN Output Resistance ROUT MAX4310/MAX4311/ MAX4312 only Open loop 3 MΩ 70 kΩ 8 Closed loop, AV = +1V/V MAX4313/MAX4314/MAX4315 0.025 MAX4310/MAX4311/MAX4312, open loop 35 MAX4313/MAX4314/MAX4315 1 Disabled Output Resistance ROUT Open-Loop Gain AVOL MAX4310/MAX4311/MAX4312, RL = 150Ω to GND, 0.25V ≤ VOUT ≤ 4.2V 50 59 Voltage Gain AVCL MAX4313/MAX4314/MAX4315, RL = 150Ω to GND, 0.25V ≤ VOUT ≤ 4.2V 1.9 2.0 2 Ω 0.025 _______________________________________________________________________________________ kΩ dB 2.1 V/V High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers (VCC = +5V, VEE = 0, SHDN ≥ 4V, RL = ∞, VOUT = 2.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS RL = 150Ω Output Voltage Swing VOUT RL = 10kΩ IOUT RL = 30Ω Power-Supply Rejection Ratio PSRR VCC = 4.0V to 10.5V ICC Shutdown Supply Current MIN MAX 0.73 0.9 VOL - VEE 0.03 0.06 VCC - VOH 0.25 0.4 0.04 0.07 VOL - VEE Output Current Quiescent Supply Current TYP VCC - VOH UNITS V ±75 ±95 mA 52 63 dB MAX4310/MAX4313 6.1 7.8 MAX4311/MAX4314 6.9 8.8 MAX4312/MAX4315 7.4 9.4 SHDN ≤ VIL 560 750 mA µA LOGIC CHARACTERISTICS (SHDN, A0, A1, A2) Logic-Low Threshold VIL VEE + 1 Logic-High Threshold VIH Logic-Low Input Current IIL VIL ≤ VEE + 1V Logic-High Input Current IIH VIH ≥ VCC - 1V VCC - 1 -500 V V -320 0.3 µA 5 µA AC ELECTRICAL CHARACTERISTICS (V CC = +5V; V EE = 0; SHDN ≥ 4V; R L = 150Ω; V CM = 1.5V; A VCL = +1V/V (MAX4310/MAX4311/MAX4312), A VCL = +2V/V (MAX4313/MAX4314/MAX4315); TA = +25°C; unless otherwise noted.) PARAMETER -3dB Bandwidth -0.1dB Bandwidth SYMBOL BW(-3dB) CONDITIONS VOUT = 100mVp-p BW(-0.1dB) VOUT = 100mVp-p MIN TYP MAX4310 280 MAX4311 345 MAX4312 265 MAX4313 150 MAX4314 127 MAX4315 97 MAX4310 60 MAX4311 40 MAX4312 35 MAX4313 40 MAX4314 78 MAX4315 46 MAX UNITS MHz MHz _______________________________________________________________________________________ 3 MAX4310–MAX4315 DC ELECTRICAL CHARACTERISTICS (continued) MAX4310–MAX4315 High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers AC ELECTRICAL CHARACTERISTICS (continued) (V CC = +5V; V EE = 0; SHDN ≥ 4V; R L = 150Ω; V CM = 1.5V; A VCL = +1V/V (MAX4310/MAX4311/MAX4312), AVCL = +2V/V (MAX4313/MAX4314/MAX4315); TA = +25°C; unless otherwise noted.) PARAMETER Full-Power Bandwidth Slew Rate Settling Time to 0.1% SYMBOL FPBW SR tS Gain Matching Differential Gain Error Differential Phase Error Spurious-Free Dynamic Range DG DG SFDR CONDITIONS VOUT = 2Vp-p VOUT = 2Vp-p VOUT = 2V step MAX4310 110 MAX4311 100 MAX4312 80 MAX4313 40 MAX4314 90 MAX4315 70 MAX4310 460 MAX4311 430 MAX4312 345 MAX4313 540 MAX4314 430 MAX4315 310 MAX4310/MAX4311/MAX4312 42 MAX4313/MAX4314/MAX4315 25 AVCL = +1V/V, RL = 150Ω to VCC/2 MAX4310/MAX4311/MAX4312 0.06 RL = 150Ω to VCC/2 MAX4313/MAX4314/MAX4315 0.09 AVCL = +1V/V, RL = 150Ω to VCC/2 MAX4310/MAX4311/MAX4312 0.08 RL = 150Ω to VCC/2 MAX4313/MAX4314/MAX4315 MAX UNIT MHz V/µs ns dB % degrees 0.03 MAX4310/ MAX4311/ MAX4312 f = 3kHz -89 f = 2MHz -80 f = 20MHz -47 MAX4313/ MAX4314/ MAX4315 f = 3kHz -95 f = 2MHz -72 f = 20MHz -47 VOUT = 2Vp-p MAX4310/MAX4311/MAX4312 -85 MAX4313/MAX4314/MAX4315 -76 f = 1MHz, VOUT = 2Vp-p MAX4310/MAX4311/MAX4312 -88 MAX4313/MAX4314/MAX4315 -95 f = 1MHz, VOUT = 2Vp-p MAX4310/MAX4311/MAX4312 -83 MAX4313/MAX4314/MAX4315 -76 Third Harmonic Distortion 4 TYP 0.05 f = 1MHz, VOUT = 2Vp-p THD MIN Matching between channels over -3dB bandwidth Second Harmonic Distortion Total Harmonic Distortion CONDITIONS _______________________________________________________________________________________ dBc dBc dBc dB High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers (VCC = +5V; VEE = 0; SHDN ≥ 4V; RL = 150Ω; VCM = 1.5V; AVCL = +1V/V (MAX4310/MAX4311/MAX4312), AVCL = +2V/V (MAX4313/MAX4314/MAX4315); TA = +25°C; unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX4310/MAX4313 -95 MAX4311/MAX4314 -60 MAX4312/MAX4315 -52 All-Hostile Crossstalk f = 10MHz, VIN = 2Vp-p Off-Isolation SHDN = 0, f = 10MHz, VIN = 2Vp-p MAX UNITS dB -82 dB f = 10MHz 3 Ω CIN Channel on or off 2 pF Input Voltage Noise Density en f = 10kHz 14 nV/√Hz Input Current Noise Density in f = 10kHz 1.3 pA/√Hz Output Impedance ZOUT Input Capacitance SWITCHING CHARACTERISTICS Channel Switching Time tSW 40 ns Enable Time from Shutdown tON 50 ns Disable Time to Shutdown tOFF 120 ns 10 mVp-p Switching Transient Typical Operating Characteristics (VCC = +5V; VEE = 0; SHDN ≥ 4V; RL = 150Ω to VCC/2; VCM = 1.5V; AVCL = +1V/V (MAX4310/MAX4311/MAX4312), AVCL = +2V/V (MAX4313/MAX4314/MAX4315); TA = +25°C; unless otherwise noted.) VOUT = 100mVp-p 0.4 2 0 -1 -2 -3 4 3 0.2 1 0.1 0 -0.1 0 -1 -2 -0.2 -3 -4 -0.3 -4 -5 -0.4 -5 -6 -0.5 100k 1M 10M FREQUENCY (Hz) 100M 1G VOUT = 2Vp-p 2 GAIN (dB) GAIN FLATNESS (dB) GAIN (dB) VOUT = 100mVp-p 0.3 1 MAX4310 LARGE-SIGNAL GAIN vs. FREQUENCY MAX4310/15 toc02 0.5 MAX4310-01 4 3 MAX4310 GAIN FLATNESS vs. FREQUENCY MAX4310/15-03 MAX4310 SMALL-SIGNAL GAIN vs. FREQUENCY -6 100k 1M 10M FREQUENCY (Hz) 100M 1G 100k 1M 10M 100M 1G FREQUENCY (Hz) _______________________________________________________________________________________ 5 MAX4310–MAX4315 AC ELECTRICAL CHARACTERISTICS (continued) Typical Operating Characteristics (continued) (VCC = +5V; VEE = 0; SHDN ≥ 4V; RL = 150Ω to VCC/2; VCM = 1.5V; AVCL = +1V/V (MAX4310/MAX4311/MAX4312), AVCL = +2V/V (MAX4313/MAX4314/MAX4315); TA = +25°C; unless otherwise noted.) -3 -4 -5 -1 -0.2 -2 -0.4 -3 -4 -5 -6 -0.6 -6 -7 -0.7 -7 -8 -0.8 -8 10 100 1000 10 100 1000 1 100 1000 FREQUENCY (MHz) MAX4312 SMALL-SIGNAL GAIN vs. FREQUENCY MAX4312 GAIN FLATNESS vs. FREQUENCY MAX4312 LARGE-SIGNAL GAIN vs. FREQUENCY -4 -5 0 -0.1 -1 -0.2 -2 -0.3 -0.4 -3 -4 -0.5 -5 -6 -0.6 -6 -7 -0.7 -7 -8 -0.8 1 10 100 1000 VOUT = 2Vp-p 1 GAIN (dB) -3 MAX4310/15 toc09 0 GAIN FLATNESS (dB) -2 VOUT = 100mVp-p 0.1 2 MAX4310/15 toc08 0.2 MAX4310/15 toc07 0 -1 -8 1 10 100 1000 1 10 100 1000 FREQUENCY (MHz) FREQUENCY (MHz) FREQUENCY (MHz) MAX4313 SMALL-SIGNAL GAIN vs. FREQUENCY MAX4313 GAIN FLATNESS vs. FREQUENCY MAX4313 LARGE-SIGNAL GAIN vs. FREQUENCY 1 0 -1 -2 -3 -4 -5 -6 1M 10M FREQUENCY (Hz) 100M 1G VOUT = 2Vp-p 2 1 0.2 0.1 0 0 -1 -0.1 -2 -0.2 -3 -0.3 -4 -0.4 -5 -6 -0.5 100k 4 3 MAX4310/15-toc12 VOUT = 100mVp-p 0.3 GAIN FLATNESS (dB) 2 0.4 GAIN (dB) VOUT = 100mVp-p MAX4310/15-toc11 0.5 MAX4310/15-toc10 4 3 10 FREQUENCY (MHz) VOUT = 100mVp-p 1 1 FREQUENCY (MHz) 2 GAIN (dB) 0 -0.1 -0.3 VOUT = 2Vp-p 1 -0.5 1 6 0 GAIN FLATNESS (dB) GAIN (dB) -2 2 GAIN (dB) 0 -1 VOUT = 100mVp-p 0.1 MAX4311 LARGE-SIGNAL GAIN vs. FREQUENCY MAX4310/15 toc05 VOUT = 100mVp-p 1 0.2 MAX4311 toc04 2 MAX4311 GAIN FLATNESS vs. FREQUENCY MAX4311 toc06 MAX4311 SMALL-SIGNAL GAIN vs. FREQUENCY GAIN (dB) MAX4310–MAX4315 High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers 100k 1M 10M FREQUENCY (Hz) 100M 1G 100k 1M 10M FREQUENCY (Hz) _______________________________________________________________________________________ 100M 1G High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers -3 MAX4310/15 toc14 0 -1 -0.2 -2 -0.3 -3 -4 -0.5 -5 -6 -0.6 -6 -7 -0.7 -7 -8 -0.8 100 -8 1 10 100 1 1000 100 1000 FREQUENCY (MHz) MAX4315 SMALL-SIGNAL GAIN vs. FREQUENCY MAX4315 GAIN FLATNESS vs. FREQUENCY MAX4315 LARGE-SIGNAL GAIN vs. FREQUENCY 0 -2 -3 -4 0 -0.1 -1 -0.2 -2 -0.3 -3 -0.4 -4 -0.5 -5 -6 -0.6 -6 -7 -0.7 -7 -5 -8 -8 -0.8 1 10 100 1000 VOUT = 2Vp-p 1 GAIN (dB) GAIN FLATNESS (dB) 0 VOUT = 100mVp-p 0.1 2 MAX4310/15 toc17 0.2 MAX4310/15 toc18 FREQUENCY (MHz) -1 1 10 100 1 1000 10 100 FREQUENCY (MHz) FREQUENCY (MHz) FREQUENCY (MHz) MAX4310/MAX4311/MAX4312 HARMONIC DISTORTION vs. FREQUENCY MAX4313/MAX4314/MAX4315 HARMONIC DISTORTION vs. FREQUENCY POWER-SUPPLY REJECTION vs. FREQUENCY -40 -50 -60 2ND HARMONIC -70 -80 -30 VOUT = 2Vp-p -40 -50 2ND HARMONIC -60 -70 -80 3RD HARMONIC -90 3RD HARMONIC -90 -100 1M 10M FREQUENCY (Hz) 100M 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 100k 1000 MAX4310/15-21 -20 POWER-SUPPLY REJECTION (dB) VOUT = 2Vp-p HARMONIC DISTORTION (dBc) MAX4310/15 toc19 -20 -30 10 FREQUENCY (MHz) VOUT = 100mVp-p 1 1000 MAX4310/15 toc16 2 10 VOUT = 2Vp-p 1 -0.4 -4 1 HARMONIC DISTORTION (dBc) 2 -0.1 MAX4310/15-20 GAIN (dB) -2 -5 GAIN (dB) 0 GAIN FLATNESS (dB) 0 -1 VOUT = 100mVp-p 0.1 GAIN (dB) VOUT = 100mVp-p 1 0.2 MAX4310/15 toc13 2 MAX4314 LARGE-SIGNAL GAIN vs. FREQUENCY MAX4314 GAIN FLATNESS vs. FREQUENCY MAX4310/15 toc15 MAX4314 SMALL-SIGNAL GAIN vs. FREQUENCY -100 100k 1M 10M FREQUENCY (Hz) 100M 100k 1M 10M 100M 1G FREQUENCY (Hz) _______________________________________________________________________________________ 7 MAX4310–MAX4315 Typical Operating Characteristics (continued) (VCC = +5V; VEE = 0; SHDN ≥ 4V; RL = 150Ω to VCC/2; VCM = 1.5V; AVCL = +1V/V (MAX4310/MAX4311/MAX4312), AVCL = +2V/V (MAX4313/MAX4314/MAX4315); TA = +25°C; unless otherwise noted.) Typical Operating Characteristics (continued) (VCC = +5V; VEE = 0; SHDN ≥ 4V; RL = 150Ω to VCC/2; VCM = 1.5V; AVCL = +1V/V (MAX4310/MAX4311/MAX4312), AVCL = +2V/V (MAX4313/MAX4314/MAX4315); TA = +25°C; unless otherwise noted.) MAX4310/MAX4311/MAX4312 COMMON-MODE REJECTION vs. FREQUENCY -70 -90 -80 -90 -110 -90 -100 -130 -110 1M 10M 100M -150 100k 1G 1M 10M 100M 1G 0.1 FREQUENCY (Hz) FREQUENCY (Hz) MAX4312/MAX4315 ALL-HOSTILE CROSSTALK vs. FREQUENCY MAX4311/MAX4314 ALL-HOSTILE CROSSTALK vs. FREQUENCY 10 30 10 CROSSTALK (dB) -10 -30 -50 -70 MAX4310/15 toc26 30 -10 -30 -50 -70 -90 -90 -110 -110 -130 -130 -150 -150 0.1 1 10 100 1 10 100 FREQUENCY (MHz) VOLTAGE-NOISE DENSITY vs. FREQUENCY (INPUT REFERRED) CURRENT-NOISE DENSITY vs. FREQUENCY (INPUT REFERRED) 1 0.1 100k 1M 10M 10 100 1k 10k 100k FREQUENCY (Hz) 1M 10M MAX4310/15 toc29 IN (1V/div) OUT (1V/div) 100 1k 10k 100k 1G MAX4310 LARGE-SIGNAL PULSE RESPONSE 10 10 100M FREQUENCY (Hz) 100 CURRENT-NOISE DENSITY (pA/√Hz) MAX4310/15 toc28a 10 1 10 1000 OUTPUT IMPEDANCE vs. FREQUENCY 100 1000 FREQUENCY (MHz) 100 100 0.01 0.1 1000 10 FREQUENCY (MHz) 50 MAX4310/15 toc25 50 1 MAX4310/15-toc27 100k OUTPUT IMPEDANCE (Ω) 10k CROSSTALK (dB) -70 -30 -50 -80 -70 -100 8 10 -10 MAX4310/15 toc30 -60 -50 -60 MAX4310/15-toc24 -30 -40 30 CROSSTALK (dB) -40 -50 50 MAX4310/15-toc23 -10 -20 ISOLATION (dB) COMMON-MODE REJECTION (dB) -20 -30 MAX4310/MAX4313 All-HOSTILE CROSSTALK vs. FREQUENCY OFF-ISOLATION vs. FREQUENCY MAX4310/15-toc22 0 -10 VOLTAGE-NOISE DENSITY (nV/√Hz) MAX4310–MAX4315 High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers 1M 10M 10ns/div FREQUENCY (Hz) _______________________________________________________________________________________ High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers MAX4312 LARGE-SIGNAL PULSE RESPONSE OUT (1V/div) IN (1V/div) MAX4310/15-toc33 IN (1V/div) MAX4313 LARGE-SIGNAL PULSE RESPONSE MAX43110/15 toc32 MAX4310/15-toc33 MAX4311 LARGE-SIGNAL PULSE RESPONSE IN (500mV/div) OUT (1V/div) OUT (1V/div) MAX4314 LARGE-SIGNAL PULSE RESPONSE MAX4315 LARGE-SIGNAL PULSE RESPONSE MAX4310 SMALL-SIGNAL PULSE RESPONSE IN (500mV/div) VOUT (1V/div) IN (500mV/div) MAX4310/15 toc36 10ns/div MAX4310/15 toc35 10ns/div MAX4310/15-toc33 10ns/div IN (50mV/div) OUT (50mV/div) OUT (IV/div) MAX4311 SMALL-SIGNAL PULSE RESPONSE MAX4312 SMALL-SIGNAL PULSE RESPONSE MAX4313 SMALL-SIGNAL PULSE RESPONSE IN (50mV/div) OUT (50mV/div) IN (50mV/div) IN (50mV/div) OUT (50mV/div) OUT (50mV/div) 10ns/div MAX4310/15-toc39 10ns/div MAX4310/15 toc38 10ns/div MAX4310/15 toc37a 10ns/div 10ns/div 10ns/div _______________________________________________________________________________________ 9 MAX4310–MAX4315 Typical Operating Characteristics (continued) (VCC = +5V; VEE = 0; SHDN ≥ 4V; RL = 150Ω to VCC/2; VCM = 1.5V; AVCL = +1V/V (MAX4310/MAX4311/MAX4312), AVCL = +2V/V (MAX4313/MAX4314/MAX4315); TA = +25°C; unless otherwise noted.) Typical Operating Characteristics (continued) IN (50mV/div) 10ns/div MAX4310 SMALL-SIGNAL PULSE RESPONSE (CL = 22pF) MAX4313 SMALL-SIGNAL PULSE RESPONSE (CL = 10pF) MAX4313 SMALL-SIGNAL PULSE RESPONSE (CL = 22pF) IN (50mV/div) IN (50mV/div) OUT (50mV/div) OUT (50mV/div) OUT (50mV/div) MAX431015-toc45 10ns/div MAX4310/15-toc44 10ns/div IN (50mV/div) 10ns/div 10ns/div 10ns/div MAX4310/15 toc46 A0 (2.5V/div) OUT (10mV/div) MAX4310-TOC27 SHUTDOWN RESPONSE TIME CHANNEL-SWITCHING TRANSIENT SHDN (2.0V/div) OUT (1V/div) 20ns/div 10 IN (50mV/div) OUT (50mV/div) OUT (50mV/div) OUT (50mV/div) MAX4310/15-toc42 IN (50mV/div) MAX4311 toc MAX4311 toc (VCC = +5V; VEE = 0; SHDN ≥ 4V; RL = 150Ω to VCC/2; VCM = 1.5V; AVCL = +1V/V (MAX4310/MAX4311/MAX4312), AVCL = +2V/V (MAX4313/MAX4314/MAX4315); TA = +25°C; unless otherwise noted.) MAX4310 MAX4315 SMALL-SIGNAL PULSE RESPONSE MAX4314 SMALL-SIGNAL PULSE RESPONSE (CL = 10pF) SMALL-SIGNAL PULSE RESPONSE MAX4310-TOC22 MAX4310–MAX4315 High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers 100ns/div ______________________________________________________________________________________ High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers PIN MAX4310 SO/ µMAX QSOP MAX4312 SO/ QSOP MAX4313 SO/ µMAX NAME QSOP MAX4315 SO/ QSOP SO SO 1 2 2 3 1 2 2 3 A0 Channel Address Logic Input 0 — 1 1 2 — 1 1 2 A1 Channel Address Logic Input 1 — — — 1 — — — 1 A2 Channel Address Logic Input 2 2 12 14 14 2 12 14 14 SHDN 3 4 4 4 3 4 4 4 VCC Positive Power Supply 4 5 5 5 4 5 5 5 IN0 Amplifier Input 0 5 7 7 6 5 7 7 6 IN1 Amplifier Input 1 — 8 10 7 — 8 10 7 IN2 Amplifier Input 2 — 10 12 8 — 10 12 8 IN3 Amplifier Input 3 — — — 9 — — — 9 IN4 Amplifier Input 4 — — — 10 — — — 10 IN5 Amplifier Input 5 — — — 11 — — — 11 IN6 Amplifier Input 6 — — — 12 — — — 12 IN7 Amplifier Input 7 6 11 13 13 6 11 13 13 VEE Negative Power Supply. Ground for single-supply operation. 7 13 15 15 — — — — FB Amplifier Feedback Input — — — — 7 13 15 15 GND Ground 8 14 16 16 8 14 16 16 OUT Amplifier Output — 3, 6, 9 3, 6, 8, 9, 11 — — 3, 6, 9 3, 6, 8, 9, 11 — N.C. Not connected. Tie to ground plane for optimal performance. MAX4311 MAX4314 FUNCTION Shutdown Input ______________________________________________________________________________________ 11 MAX4310–MAX4315 Pin Description MAX4310–MAX4315 High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers _______________Detailed Description The MAX4310/MAX4311/MAX4312 combine 2-channel, 4-channel, or 8-channel multiplexers, respectively, with an adjustable-gain output amplifier optimized for closed-loop gains of +1V/V (0dB) or greater. The MAX4313/MAX4314/MAX4315 combine 2-channel, 4channel, or 8-channel multiplexers, respectively, with a +2V/V (6dB) fixed-gain amplifier, optimized for driving back-terminated cables. These devices operate from a single supply voltage of +4V to +10.5V, or from dual supplies of ±2V to ±5.25V. The outputs may be placed in a high-impedance state and the supply current minimized by forcing the SHDN pin low. The input multiplexers feature short 40ns channel-switching times and small 10mVp-p switching transients. The input capacitance remains constant at 1pF whether the channel is on or off, providing a predictable input impedance to the signal source. These devices feature single-supply, rail-to-rail, voltage-feedback output amplifiers that achieve up to 540V/µs slew rates and up to 345MHz -3dB bandwidths. These devices also feature excellent harmonic distortion and differential gain/phase performance. __________Applications Information Rail-to-Rail Outputs, Ground-Sensing Input The input common-mode range extends from the negative supply rail to VCC - 2.7V with excellent commonmode rejection. Beyond this range, multiplexer switching times may increase and the amplifier output is a nonlinear function of the input, but does not undergo phase reversal or latchup. The output swings to within 250mV of VCC and 40mV of VEE with a 10kΩ load. With a 150Ω load to ground, the 75Ω CABLE 4 IN0 OUT 8 RT 75Ω 75Ω CABLE RT 75Ω RF 75Ω CABLE 5 RT 75Ω FB 7 IN1 A0 RG MAX4310 1 Figure 1. MAX4310 Noninverting Gain Configuration 12 RT 75Ω output swings from 30mV above VEE to within 730mV of the supply rail. Local feedback around the output stage ensures low open-loop output impedance to reduce gain sensitivity to load variations. This feedback also produces demand-driven bias current to the output transistors for ±95mA drive capability while constraining total supply current to only 6.1mA. Feedback and Gain Resistor Selection (MAX4310/MAX4311/MAX4312) Select the MAX4310/MAX4311/MAX4312 gain-setting feedback (RF) and input (RG) resistors to fit your application. Large resistor values increase voltage noise and interact with the amplifier’s input and PC board capacitance. This can generate undesirable poles and zeros, and can decrease bandwidth or cause oscillations. For example, a noninverting gain of +2V/V configuration (RF = RG) using 1kΩ resistors, combined with 2pF of input capacitance and 1pF of PC board capacitance, causes a pole at 159MHz. Since this pole is within the amplifier bandwidth, it jeopardizes stability. Reducing the 1kΩ resistors to 100Ω extends the pole frequency to 1.59GHz, but could limit output swing by adding 200Ω in parallel with the amplifier’s load resistor. Table 1 shows suggested RF and RG values for the MAX4310/MAX4311/MAX4312 when operating in the noninverting configuration (shown in Figure 1). These values provide optimal AC response using surfacemount resistors and good layout techniques, as discussed in the Layout and Power-Supply Bypassing section. Stray capacitance at the FB pin causes feedback resistor decoupling and produces peaking in the frequencyresponse curve. Keep the capacitance at FB as low as possible by using surface-mount resistors and by avoiding the use of a ground plane beneath or beside these resistors and the FB pin. Some capacitance is unavoidable; if necessary, its effects can be neutralized by adjusting RF. Use 1% resistors to maintain consistency over a wide range of production lots. Table 1. Bandwidth and Gain with Suggested Gain-Setting Resistors (MAX4310/MAX4311/MAX4312) GAIN (V/V) GAIN (dB) 1 0 2 6 5 14 10 20 RF (Ω) RG (Ω) -3dB BW (MHz) 0.1dB BW (MHz) 0 ∞ 280 60 500 500 80 30 500 120 20 4 500 56 10 2 ______________________________________________________________________________________ High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers 0 0 -1 -2 INPUT CURRENT (µA) INPUT CURRENT (µA) -20 -40 -60 -80 -100 -3 -4 -5 -6 -7 -8 -120 -9 -140 -10 -160 0 0 50 100 150 200 250 300 350 400 450 500 50 100 150 200 250 300 350 400 450 500 LOGIC-LOW THRESHOLD (mV ABOVE VEE) LOGIC-LOW THRESHOLD (mV ABOVE VEE) Figure 2. Logic-Low Input Current vs. VIL (SHDN, A0, A1, A2) Figure 4. Logic-Low Input Current vs. VIL with 10kΩ Series Resistor For normal operation, drive SHDN high. If the shutdown function is not used, connect SHDN to VCC. LOGIC INPUT Layout and Power-Supply Bypassing 10k IN- SHDN, A0, A1, A2 OUT MAX431_ IN+ Figure 3. Circuit to Reduce Logic-Low Input Current Low-Power Shutdown Mode All parts feature a low-power shutdown mode that is activated by driving the SHDN input low. Placing the amplifier in shutdown mode reduces the quiescent supply current to 560µA and places the output into a highimpedance state, typically 35kΩ. By tying the outputs of several devices together and disabling all but one of the paralleled amplifiers’ outputs, multiple devices may be paralleled to construct larger switch matrices. For MAX4310/MAX4311/MAX4312 application circuits operating with a closed-loop gain of +2V/V or greater, consider the external-feedback network impedance of all devices used in the mux application when calculating the total load on the output amplifier of the active device. The MAX4313/MAX4314/MAX4315 have a fixed gain of +2V/V that is internally set with two 500Ω thinfilm resistors. The impedance of the internal feedback resistors must be taken into account when operating multiple MAX4313/MAX4314/MAX4315s in large multiplexer applications. The MAX4310–MAX4315 have very high bandwidths and consequently require careful board layout, including the possible use of 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 one exception: the feedback (FB) should have as low a capacitance to ground as possible. Therefore, layers that do not incorporate a signal or power trace should not have a ground plane. Whether or not a constant-impedance board is used, it is best to observe the following guidelines when designing the board: 1) Do not use wire-wrapped boards (they are too inductive) or breadboards (they are too capacitive). 2) Do not use IC sockets; they increase parasitic capacitance and inductance. 3) Keep signal lines as short and 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. ______________________________________________________________________________________ 13 MAX4310–MAX4315 20 IN0 OUT 8 RT 75Ω 75Ω CABLE OUT RT 75Ω 500Ω RT 75Ω 75Ω CABLE 5 IN1 A0 RT 75Ω 500Ω MAX4313 GND 1 MAX4310-FIG08 4 ISOLATION RESISTANCE RISO (Ω) 30 75Ω CABLE 25 20 15 10 7 0 50 100 150 200 250 CAPACITIVE LOAD (pF) Figure 5. Video Line Driver Figure 8. Optimal Isolation Resistance vs. Capacitive Load 2 3 2 10pF LOAD 1 GAIN (dB) 5pF LOAD -2 -3 -4 -5 VOUT = 100mVp-p 100k 1M -6 10M 100M 1G 75Ω CABLE OUT 8 RISO RT 75Ω 500Ω CL 75Ω CABLE 5 RT 75Ω IN1 A0 500Ω MAX4313 GND 1 1M 10M 100M 1G FREQUENCY (Hz) Figure 6. Small-Signal Gain vs. Frequency with Capacitive Load and No Isolation Resistor IN0 VOUT = 100mVp-p 100k FREQUENCY (Hz) 4 90pF LOAD -2 -4 -6 47pF LOAD 0 -1 -3 -5 120pF LOAD 1 0 -1 MAX4310-FIG09 15pF LOAD 3 4 MAX4310-FIG06 4 GAIN (dB) MAX4310–MAX4315 High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers 7 Figure 7. Using an Isolation Resistor (RISO) for High Capacitive Loads RL Figure 9. Small-Signal Gain vs. Frequency with Load Capacitance and 27Ω Isolation Resistor The bypass capacitors should include a 100nF, ceramic surface-mount capacitor between each supply pin and the ground plane, located as close to the package as possible. Optionally, place a 10µF tantalum capacitor at the power-supply pins’ point 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. To minimize parasitic inductance, keep PC traces short and use surface-mount components. If input termination resistors and output back-termination resistors are used, they should be surface-mount types, and should be placed as close to the IC pins as possible. Video Line Driver The MAX4310–MAX4315 are well-suited to drive coaxial transmission lines when the cable is terminated at both ends, as shown in Figure 5. Cable frequency response can cause variations in the signal’s flatness. 14 ______________________________________________________________________________________ High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers MAX4310–MAX4315 Table 2. Input Control Logic MAX4310/MAX4313 SHDN A2 A1 A0 CHANNEL SELECTED 0 — — X None, High-Z Output 1 — — 0 0 1 — — 1 1 MAX4311/MAX4314 SHDN A2 A1 A0 CHANNEL SELECTED 0 — X X None, High-Z Output 1 — 0 0 0 1 — 0 1 1 1 — 1 0 2 1 — 1 1 3 MAX4312/MAX4315 Figure 10. High-Speed EV Board Layout—Component Side SHDN A2 A1 A0 CHANNEL SELECTED 0 X X X None, High-Z Output 1 0 0 0 0 1 0 0 1 1 1 0 1 0 2 1 0 1 1 3 1 1 0 0 4 1 1 0 1 5 1 1 1 0 6 1 1 1 1 7 forms an L-C resonant circuit with the capacitive load, which causes peaking in the frequency response and degrades the amplifier’s phase margin. Figure 11. High-Speed EV Board Layout—Solder Side Driving Capacitive Loads A correctly terminated transmission line is purely resistive and presents no capacitive load to the amplifier. Reactive loads decrease phase margin and may produce excessive ringing and oscillation (see Typical Operating Characteristics). Another concern when driving capacitive loads originates from the amplifier’s output impedance, which appears inductive at high frequencies. This inductance Although the MAX4310–MAX4315 are optimized for AC performance and are not designed to drive highly capacitive loads, they are capable of driving up to 20pF without oscillations. However, some peaking may occur in the frequency domain (Figure 6). To drive larger capacitive loads or to reduce ringing, add an isolation resistor between the amplifier’s output and the load (Figure 7). The value of RISO depends on the circuit’s gain and the capacitive load (Figure 8). Figure 9 shows the MAX4310–MAX4315 frequency response with the isolation resistor and a capacitive load. With higher capacitive values, bandwidth is dominated by the RC network formed by RISO and CL; the bandwidth of the amplifier itself is much higher. Also note that the isolation resistor forms a divider that decreases the voltage delivered to the load. ______________________________________________________________________________________ 15 MAX4310–MAX4315 High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers Digital Interface The multiplexer architecture of the MAX4310–MAX4315 ensures that no two input channels are ever connected together. Channel selection is accomplished by applying a binary code to channel address inputs. The address decoder selects input channels, as shown in Table 2. All digital inputs are CMOS compatible. High-Speed Evaluation Board Figures 10 and 11 show the evaluation board and present a suggested layout for the circuits. This board was developed using the techniques described in the Layout and Power-Supply Bypassing section of this data sheet. The smallest available surface-mount resistors were used for feedback and back-termination to minimize their distance from the part, reducing the capacitance associated with longer lead lengths. SMA connectors were used for best high-frequency performance. Inputs and outputs do not match a 75Ω line, but this does not affect performance since distances are extremely short. However, in applications that require lead lengths greater than one-quarter of the wavelength of the highest frequency of interest, use constant-impedance traces. Fully assembled evaluation boards are available for the MAX4313 in an SO package. Chip Information TRANSISTOR COUNT: 156 Typical Operating Circuit +4V TO +10.5V 0.1µF 3 VCC MAX4313 5 4 IN1 OUT 8 IN0 75Ω 75Ω CABLE VIDEO OUTPUT 500Ω 75Ω A0 500Ω 1 16 VEE SHDN 6 2 7 GND ______________________________________________________________________________________ High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers TOP VIEW MAX4310 A0 1 + - SHDN 2 VCC 3 MUX IN0 4 8 OUT 7 FB 6 VEE 5 IN1 SO/µMAX MAX4311 MAX4311 A1 1 14 OUT A0 2 13 FB 12 SHDN N.C. 3 MUX VCC 4 MAX4312 A1 1 16 OUT A2 1 16 OUT A0 2 15 FB A1 2 15 FB 14 SHDN A0 3 N.C. 3 MUX 11 VEE VCC 4 13 VEE VCC 4 IN0 5 10 IN3 IN0 5 12 IN3 IN0 5 12 IN7 N.C. 6 9 N.C. N.C. 6 11 N.C. IN1 6 11 IN6 IN1 7 8 IN2 IN1 7 10 IN2 IN2 7 10 IN5 N.C. 8 9 N.C. IN3 8 9 IN4 SO QSOP MAX4313 A1 1 14 OUT 500Ω A0 1 500Ω 8 OUT 7 GND SHDN 2 500Ω 6 MUX VEE 5 IN1 IN0 4 SO/µMAX A2 1 A1 2 500Ω VCC 4 500Ω 12 SHDN N.C. 3 MUX IN0 5 MAX4315 500Ω 13 GND A0 2 13 VEE SO/QSOP MAX4314 MAX4314 VCC 3 14 SHDN MUX 16 OUT A2 1 15 GND A1 2 14 SHDN A0 3 MUX 500Ω 500Ω A0 3 16 OUT 15 GND 14 SHDN MUX 13 VEE VCC 4 IN0 5 12 IN3 IN0 5 12 IN7 11 VEE VCC 4 10 IN3 13 VEE N.C. 6 9 N.C. N.C. 6 11 N.C. IN1 6 11 IN6 IN1 7 8 IN2 IN1 7 10 IN2 IN2 7 10 IN5 N.C. 8 9 N.C. IN3 8 9 IN4 SO QSOP SO/QSOP N.C. = NOT INTERNALLY CONNECTED. TIE TO GROUND PLANE FOR OPTIMAL PERFORMANCE. ______________________________________________________________________________________ 17 MAX4310–MAX4315 Pin Configurations High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers 8LUMAXD.EPS MAX4310–MAX4315 Package Information 18 ______________________________________________________________________________________ High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers QSOP.EPS ______________________________________________________________________________________ 19 MAX4310–MAX4315 Package Information (continued) MAX4310–MAX4315 High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers SOICN.EPS Package Information (continued) 20 ______________________________________________________________________________________