19-1989; Rev 0; 3/01 Ultra-Small, Low-Cost, 210MHz, Dual-Supply Op Amps with Rail-to-Rail Outputs Features ♦ Ultra-Small 5-Pin SC70, 5-Pin SOT23, and 8-Pin SOT23 Packages ♦ Low Cost ♦ High Speed 210MHz -3dB Bandwidth 55MHz 0.1dB Gain Flatness 485V/µs Slew Rate ♦ Rail-to-Rail Outputs ♦ Input Common-Mode Range Extends to VEE ♦ Low Differential Gain/Phase: 0.02%/0.08° ♦ Low Distortion at 5MHz -65dBc SFDR -63dB Total Harmonic Distortion Applications Set-Top Boxes Surveillance Video Systems Video Line Drivers Analog-to-Digital Converter Interface CCD Imaging Systems Video Routing and Switching Systems Digital Cameras Ordering Information PART TEMP. RANGE PINPACKAGE MAX4350EXK-T -40°C to +85°C 5 SC70-5 MAX4350EUK-T -40°C to +85°C 5 SOT23-5 ADRA MAX4351EKA-T -40°C to +85°C 8 SOT23-8 AAIC MAX4351ESA -40°C to +85°C 8 SO ACF — Pin Configurations Typical Operating Circuit TOP VIEW RF 24Ω OUT 1 RTO 75Ω MAX4350 TOP MARK VOUT ZO = 75Ω RO 75Ω IN RTIN 75Ω UNITY-GAIN LINE DRIVER (RL = RO + RTO) VEE 2 IN+ 3 5 VCC 4 IN- MAX4350 SC70-5/SOT23-5 Pin Configurations continued at end of data sheet. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. ________________________________________________________________ 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 MAX4350/MAX4351 General Description The MAX4350 single and MAX4351 dual op amps are unity-gain-stable devices that combine high-speed performance with Rail-to-Rail® outputs. Both devices operate from dual ±5V supplies. The common-mode input voltage range extends to the negative power-supply rail. The MAX4350/MAX4351 require only 6.9mA of quiescent supply current per op amp while achieving a 210MHz -3dB bandwidth and a 485V/µs slew rate. Both devices are excellent solutions in low-power systems that require wide bandwidth, such as video, communications, and instrumentation. The MAX4350 is available in an ultra-small 5-pin SC70 package and the MAX4351 is available in a spacesaving 8-pin SOT23 package. MAX4350/MAX4351 Ultra-Small, Low-Cost, 210MHz, Dual-Supply Op Amps with Rail-to-Rail Outputs ABSOLUTE MAXIMUM RATINGS Supply Voltage (VCC to VEE)................................................+12V IN_-, IN_+, OUT_..............................(VEE - 0.3V) to (VCC + 0.3V) Output Short-Circuit Current to VCC or VEE ......................150mA Continuous Power Dissipation (TA = +70°C) 5-Pin SC70 (derate 2.5mW/°C above +70°C) .............200mW 5-Pin SOT23 (derate 7.1mW/°C above +70°C) ...........571mW 8-Pin SOT23 (derate 5.26mW/°C above +70°C) .........421mW 8-Pin SO (derate 5.9mW/°C above +70°C) .................471mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+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 at 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, RL = ∞ to 0, VOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL Input Common-Mode Voltage Range VCM Input Offset Voltage VOS Input Offset Voltage Matching Input Offset Voltage Temperature Coefficient Input Bias Current Input Offset Current Input Resistance Common-Mode Rejection Ratio Open-Loop Gain CONDITIONS Guaranteed by CMRR test MIN VEE 1 MAX4351 only 2 VCC 2.25 V 26 mV TCVOS 8 µV/°C IB 7.5 20 0.5 4 IOS RIN CMRR AVOL VOUT IOUT ISC Open-Loop Output Resistance ROUT Power-Supply Rejection Ratio PSRR Operating Supply-Voltage Range VS Quiescent Supply Current (Per Amplifier) IS µA µA Differential mode (-1V ≤ VIN ≤ +1V) 70 kΩ Common mode (-5V ≤ VCM ≤ +2.75V) 3 MΩ dB VEE ≤ VCM ≤ (VCC - 2.25V) 70 95 -4.5V ≤ VOUT ≤ +4.5V, RL = 2kΩ 50 60 -4.25V ≤ VOUT ≤ +4.25V, RL = 150Ω 48 58 RL = 150Ω RL = 75Ω Output Short-Circuit Current UNITS mV RL = 2kΩ Output Current MAX 1 -3.75V ≤ VOUT ≤ +3.75V, RL = 75Ω Output Voltage Swing TYP RL = 50Ω 57 VCC - VOH 0.125 0.350 VOL - VEE 0.065 0.170 VCC - VOH 0.525 0.750 VOL - VEE 0.370 0.550 VCC - VOH 0.925 1.550 VOL - VEE 0.750 1.7 Sourcing 55 80 Sinking 40 75 VCC, VEE 52 V mA ±120 Sinking or sourcing VS = ±4.5V to ±5.5V dB mA 8 Ω 66 dB ±4.5 6.9 _______________________________________________________________________________________ ±5.5 V 9.0 mA Ultra-Small, Low-Cost, 210MHz, Dual-Supply Op Amps with Rail-to-Rail Outputs (VCC = +5V, VEE = -5V, VCM = 0, RF = 24Ω, RL = 100Ω to 0, AVCL = +1V/V, TA = +25°C, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Small-Signal -3dB Bandwidth BWSS VOUT = 100mVp-p 210 MHz Large-Signal -3dB Bandwidth BWLS VOUT = 2Vp-p 175 MHz VOUT = 100mVp-p 55 VOUT = 2Vp-p 40 Bandwidth for 0.1dB Gain Flatness BW0.1dB MHz Slew Rate SR VOUT = 2V step 485 V/µs Settling Time to 0.1% tS VOUT = 2V step 16 ns Rise/Fall Time tR, tF VOUT = 100mVp-p Spurious-Free Dynamic Range SFDR fC = 5MHz, VOUT = 2Vp-p Harmonic Distortion Two-Tone, Third-Order Intermodulation Distortion Channel-to-Channel Isolation HD IP3 CHISO Input 1dB Compression Point fC = 5MHz, VOUT = 2Vp-p 4 ns -65 dBc 2nd harmonic -65 3rd harmonic -58 Total harmonic distortion -63 dBc f1 = 4.7MHz, f2 = 4.8MHz, VOUT = 1Vp-p 66 dBc Specified at DC, MAX4351 only 102 dB 14 dBm Differential Phase Error DP NTSC, RL = 150Ω 0.08 degrees Differential Gain Error DG NTSC, RL = 150Ω 0.02 % Input Noise-Voltage Density eN f = 10kHz 10 nV/√Hz iN f = 10kHz 1.8 pA/√Hz 1 pF 1.5 Ω Input Noise-Current Density fC = 10MHz, AVCL = +2V/V Input Capacitance CIN Output Impedance ZOUT f = 10MHz Note 1: All devices are 100% production tested at TA = +25°C. Specifications over temperature limits are guaranteed by design. _______________________________________________________________________________________ 3 MAX4350/MAX4351 AC ELECTRICAL CHARACTERISTICS Typical Operating Characteristics (VCC = +5V, VEE = -5V, VCM = 0, AVCL = +1V/V, RF = 24Ω, RL = 100Ω to 0, TA = +25°C, unless otherwise noted.) LARGE-SIGNAL GAIN vs. FREQUENCY 0.2 1 0.1 0 0 GAIN (dB) 2 1 -1 -1 -2 -0.2 -3 -0.3 -4 -4 -0.4 -5 -5 -0.5 -6 -6 -0.6 1M 10M 100M 100k 1G 1M 10M GAIN FLATNESS vs. FREQUENCY 0.2 -0.2 DISTORTION (dBc) -0.1 1 -0.3 MAX4350-03 1G -30 -40 -50 2ND HARMONIC -60 -70 0.1 -0.4 100M VOUT = 2Vp-p AVCL = +1V/V -10 -20 IMPEDANCE (Ω) 0 -80 -0.5 3RD HARMONIC -90 -100 0.01 10M 100M 1G 100k 1M 10M FREQUENCY (Hz) -10 -20 DISTORTION (dBc) -30 -40 2ND HARMONIC -50 -60 -70 VOUT = 2Vp-p AVCL = +5V/V -90 -100 2ND HARMONIC -50 -60 3RD HARMONIC 1M 10M FREQUENCY (Hz) 100M 100M 0 fO = 5MHz VOUT = 2Vp-p AVCL = +1V/V -10 -20 -30 -40 -50 -60 2ND HARMONIC -70 -80 -80 -90 -90 3RD HARMONIC -100 -100 100k 10M DISTORTION vs. LOAD RESISTANCE -30 -40 -70 3RD HARMONIC -80 1M FREQUENCY (Hz) DISTORTION vs. FREQUENCY 0 MAX4350-07 VOUT = 2Vp-p AVCL = +2V/V 100k 1G FREQUENCY (Hz) DISTORTION vs. FREQUENCY 0 100M DISTORTION (dBc) 1M MAX4350-08 100k MAX4350-09 -0.6 -10 10M 0 10 0.1 -20 1M DISTORTION vs. FREQUENCY OUTPUT IMPEDANCE vs. FREQUENCY MAX4350-05 VOUT = 2Vp-p 0.3 100k 1G FREQUENCY (Hz) 100 MAX4350 toc04 0.4 100M FREQUENCY (Hz) FREQUENCY (Hz) 4 0 -0.1 -3 -2 VOUT = 100mVp-p 0.3 2 100k GAIN (dB) 0.4 MAX4350-02 VOUT = 2Vp-p 3 GAIN (dB) GAIN (dB) MAX4350-01 VOUT = 100mVp-p 3 GAIN FLATNESS vs. FREQUENCY 4 MAX4350-06 SMALL-SIGNAL GAIN vs. FREQUENCY 4 DISTORTION (dBc) MAX4350/MAX4351 Ultra-Small, Low-Cost, 210MHz, Dual-Supply Op Amps with Rail-to-Rail Outputs 100k 1M 10M FREQUENCY (Hz) 100M 0 200 400 600 RLOAD (Ω) _______________________________________________________________________________________ 800 1000 1200 Ultra-Small, Low-Cost, 210MHz, Single-Supply Op Amps with Rail-to-Rail Outputs -30 0 -50 DIFF PHASE (degrees) 3RD HARMONIC -60 -70 2ND HARMONIC -80 -90 -100 0.5 1.5 1.0 IRE -60 -90 -100 0 IRE 100k 100 1.4 VSWING (V) -40 -50 -60 100M 1G RF = 24Ω AVCL = +1V/V INPUT 50mV/div 1.2 -30 10M SMALL-SIGNAL PULSE RESPONSE MAX4350-14 MAX4350-13 1.6 1M FREQUENCY (Hz) OUTPUT VOLTAGE SWING vs. LOAD RESISTANCE -20 1.0 0.8 0.6 -70 -90 0.2 -100 0 1M 10M 100M VOL - VEE 0 1G RLOAD (Ω) SMALL-SIGNAL PULSE RESPONSE SMALL-SIGNAL PULSE RESPONSE RF = 500Ω AVCL = +2V/V INPUT 25mV/div OUTPUT 50mV/div 20ns/div 20ns/div 100 200 300 400 500 600 700 800 900 FREQUENCY (Hz) MAX4350-16 100k OUTPUT 50mV/div VCC - VOH 0.4 -80 LARGE-SIGNAL PULSE RESPONSE RF = 500Ω AVCL = +5V/V RF = 24Ω AVCL = +1V/V INPUT 10mV/div INPUT 1V/div OUTPUT 50mV/div OUTPUT 1V/div 20ns/div MAX4350-18 PSR (dB) -50 -80 POWER-SUPPLY REJECTION vs. FREQUENCY -10 -40 -70 VOLTAGE SWING (Vp-p) 0 100 0.12 0.10 0.08 0.06 0.04 0.02 0 -0.02 -0.04 2.0 MAX4350-12 -20 MAX4350-15 -40 -10 MAX4350-17 DISTORTION (dBc) -30 0.025 0.020 0.015 0.010 0.005 0 -0.005 -0.010 CMR (dB) -20 0 MAX4350-11 fO = 5MHz AVCL = +1V/V DIFF GAIN (%) MAX4350-10 0 -10 COMMON-MODE REJECTION vs. FREQUENCY DIFFERENTIAL GAIN AND PHASE DISTORTION vs. VOLTAGE SWING 20ns/div _______________________________________________________________________________________ 5 MAX4350/MAX4351 Typical Operating Characteristics (continued) (VCC = +5V, VEE = -5V, VCM = 0, AVCL = +1V/V, RF = 24Ω, RL = 100Ω to 0, TA = +25°C, unless otherwise noted.) Typical Operating Characteristics (continued) (VCC = +5V, VEE = -5V, VCM = 0, AVCL = +1V/V, RF = 24Ω, RL = 100Ω to 0, TA = +25°C, unless otherwise noted.) LARGE-SIGNAL PULSE RESPONSE INPUT 1V/div INPUT 500mV/div OUTPUT 1V/div RL = 100Ω INPUT 1V/div MAX4350-21 RF = 500Ω AVCL = +2V/V VOLTAGE NOISE (nV/√Hz) RF = 500Ω AVCL = +2V/V VOLTAGE NOISE vs. FREQUENCY 100 MAX4350-20 MAX4350-19 LARGE-SIGNAL PULSE RESPONSE 10 1 20ns/div 20ns/div 1 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) SMALL-SIGNAL BANDWIDTH vs. LOAD RESISTANCE ISOLATION RESISTANCE vs. CAPACITIVE LOAD RL = 100Ω 15 13 250 BANDWIDTH (MHz) RISO (Ω) 14 10 300 MAX4350-23 16 MAX4350-22 100 SMALL SIGNAL (VOUT = 100mVp-p) 12 MAX4350-24 CURRENT NOISE vs. FREQUENCY CURRENT NOISE (pA/√Hz) 200 150 100 11 50 10 LARGE SIGNAL (VOUT = 2Vp-p) 1 0 9 1 10 100 1k 10k 100k 1M 10M 0 100 200 300 400 500 600 700 800 RLOAD (Ω) CLOAD (pF) MAX4351 CROSSTALK vs. FREQUENCY OPEN-LOOP GAIN vs. LOAD RESISTANCE 70 40 20 CROSSTALK (dB) 60 50 40 30 MAX4350-26 60 MAX4350-25 80 0 -20 -40 -60 -80 20 -100 10 -120 -140 0 100 1k RLOAD (Ω) 6 0 50 100 150 200 250 300 350 400 450 500 FREQUENCY (Hz) OPEN-LOOP GAIN (dBc) MAX4350/MAX4351 Ultra-Small, Low-Cost, 210MHz, Dual-Supply Op Amps with Rail-to-Rail Outputs 10k 0.1M 1M 10M 100M FREQUENCY (Hz) _______________________________________________________________________________________ 1G Ultra-Small, Low-Cost, 210MHz, Dual-Supply Op Amps with Rail-to-Rail Outputs PIN NAME FUNCTION MAX4350 MAX4351 1 — OUT Amplifier Output 2 4 VEE Negative Power Supply or Ground (in singlesupply operation) 3 — IN+ Noninverting Input 4 — IN- Inverting Input Positive Power Supply 5 8 VCC — 1 OUTA — 2 INA- Amplifier A Output Inverting and Noninverting Configurations Select the gain-setting feedback (RF) and input (RG) resistor values to fit your application (Figures 1a and 1b). 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 decrease bandwidth or cause oscillations. For example, a noninverting gain-of-two configuration (RF = RG) using 1kΩ resistors, combined with 1pF of amplifier 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. Amplifier A Inverting Input — 3 INA+ Amplifier A Noninverting Input — 7 OUTB Amplifier B Output — 6 INB- Amplifier B Inverting Input — 5 INB+ Amplifier B Noninverting Input Layout and Power-Supply Bypassing These amplifiers operate from dual ±5V supplies. Bypass each supply with a 0.1µF capacitor to ground. Maxim recommends using microstrip and stripline techniques to obtain full bandwidth. To ensure that the PC board does not degrade the amplifier’s performance, design it for a frequency greater than 1GHz. Pay care- RF RG Detailed Description The MAX4350/MAX4351 are single-supply, rail-to-rail, voltage-feedback amplifiers that employ current-feedback techniques to achieve 485V/µs slew rates and 210MHz bandwidths. Excellent harmonic distortion and differential gain/phase performance make these amplifiers an ideal choice for a wide variety of video and RF signal-processing applications. The output voltage swings to within 125mV of each supply rail. Local feedback around the output stage ensures low open-loop output impedance to reduce gain sensitivity to load variations. The input stage permits common-mode voltages beyond the negative supply and to within 2.25V of the positive supply rail. RTO OUT MAX435 _ IN RO RTIN Figure 1a. Noninverting Gain Configuration RF RG IN Applications Information RTIN RTO Choosing Resistor Values Unity-Gain Configuration The MAX4350/MAX4351 are internally compensated for unity gain. When configured for unity gain, a 24Ω resistor (RF) in series with the feedback path optimizes AC performance. This resistor improves AC response by reducing the Q of the parallel LC circuit formed by the parasitic feedback capacitance and inductance. OUT MAX435 _ RO RS Figure 1b. Inverting Gain Configuration _______________________________________________________________________________________ 7 MAX4350/MAX4351 Pin Description ful attention to inputs and outputs to avoid large parasitic capacitance. Whether or not you use a constantimpedance board, observe the following design guidelines: • Don’t use wire-wrap boards; they are too inductive. • Don’t use IC sockets; they increase parasitic capacitance and inductance. • Use surface-mount instead of through-hole components for better high-frequency performance. • Use a PC board with at least two layers; it should be as free from voids as possible. • Keep signal lines as short and as straight as possible. Do not make 90° turns; round all corners. Rail-to-Rail Outputs, Ground-Sensing Input The input common-mode range extends from V EE to (V CC - 2.25V) with excellent common-mode rejection. Beyond this range, the amplifier output is a nonlinear function of the input, but does not undergo phase reversal or latchup. The output swings to within 125mV of either power-supply rail with a 2kΩ load. Output Capacitive Load and Stability The MAX4350/MAX4351 are optimized for AC performance. They are not designed to drive highly reactive loads, which decrease phase margin and may produce excessive ringing and oscillation. Figure 2 shows a circuit that eliminates this problem. Figure 3 is a graph of the Isolation Resistance (RISO) vs. Capacitive Load. Figure 4 shows how a capacitive load causes excessive peaking of the amplifier’s frequency response if the capacitor is not isolated from the amplifier by a resistor. A small isolation resistor (usually 20Ω to 30Ω) placed before the reactive load prevents ringing and oscillation. At higher capacitive loads, AC performance is controlled by the interaction of the load capacitance and the isolation resistor. Figure 5 shows the effect of a 27Ω isolation resistor on closed-loop response. Coaxial cable and other transmission lines are easily driven when properly terminated at both ends with their characteristic impedance. Driving back-terminated transmission lines essentially eliminates the line’s capacitance. 30 RF RG 25 RISO MAX435 _ VIN RTIN VOUT CL 50Ω ISOLATION RESISTANCE (Ω) MAX4350/MAX4351 Ultra-Small, Low-Cost, 210MHz, Dual-Supply Op Amps with Rail-to-Rail Outputs 20 15 10 5 0 0 Figure 2. Driving a Capacitive Load Through an Isolation Resistor 8 50 100 150 200 CAPACITIVE LOAD (pF) 250 Figure 3. Isolation Resistance vs. Capacitive Load _______________________________________________________________________________________ Ultra-Small, Low-Cost, 210MHz, Dual-Supply Op Amps with Rail-to-Rail Outputs 5 2 CL = 15pF 0 2 -1 GAIN (dB) 3 CL = 10pF 1 0 CL = 5pF -1 RISO = 27Ω CL = 47pF 1 4 GAIN (dB) MAX4350/MAX4351 3 6 CL = 68pF -2 CL = 120pF -3 -4 -5 -2 -3 -6 -4 -7 100k 1M 10M 100M 1G 100k 1M 10M 100M 1G FREQUENCY (Hz) FREQUENCY (Hz) Figure 4. Small-Signal Gain vs. Frequency with Load Capacitance and No Isolation Resistor Pin Configurations (continued) Figure 5. Small-Signal Gain vs. Frequency with Load Capacitance and 27Ω Isolation Resistor Chip Information MAX4350 TRANSISTOR COUNT: 86 TOP VIEW MAX4351 TRANSISTOR COUNT: 170 OUTA 1 INA- 2 8 VCC 7 OUTB 3 6 INB- VEE 4 5 INB+ MAX4351 INA+ SOT23-8/SO _______________________________________________________________________________________ 9 Ultra-Small, Low-Cost, 210MHz, Dual-Supply Op Amps with Rail-to-Rail Outputs SOT5L.EPS SC70, 5L.EPS MAX4350/MAX4351 Package Information 10 ______________________________________________________________________________________ Ultra-Small, Low-Cost, 200MHz, Dual-Supply Op Amps with Rail-to-Rail Outputs SOT23, 8L.EPS SOICN.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 © 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. MAX4350/MAX4351 Package Information (continued)