19-0442; Rev 1; 11/95 KIT ATION EVALU LE B A IL A AV 350MHz, Ultra-Low-Noise Op Amps ________________________Applications Ultra-Low-Noise ADC Preamp Ultrasound ____________________________Features ♦ 350MHz -3dB Bandwidth (MAX4106) ♦ 275V/µs Slew Rate (MAX4106) 500V/µs Slew Rate (MAX4107) ♦ 18ns Settling Time to 0.01% ♦ 0.75nV/√Hz Voltage Noise ♦ High Output Drive: 80mA ______________Ordering Information PART MAX4106ESA MAX4107ESA Low-Noise Preamplifier TEMP. RANGE PIN-PACKAGE -40°C to +85°C -40°C to +85°C 8 SO 8 SO High-Performance Receivers Active Filters Pulse/RF Amplifier ________Typical Application Circuit +5V 0.1µF __________________Pin Configuration TOP VIEW 1000pF INPUT 8 to 16-BIT HIGH-SPEED ADC MAX4107 N.C. 1 8 N.C. 7 VCC IN+ 3 6 OUT VEE 4 5 N.C. IN- 2 0.1µF 1000pF -5V RG 27Ω RF 240Ω MAX4106 MAX4107 SO ADC BUFFER WITH GAIN (AVCL = 10V/V) ________________________________________________________________ Maxim Integrated Products Call toll free 1-800-998-8800 for free samples or literature. 1 MAX4106/MAX4107 _______________General Description The MAX4106/MAX4107 op amps combine high-speed performance with ultra-low-noise performance. The MAX4106 is compensated for closed-loop gains of 5V/V, while the MAX4107 is stable in closed-loop gains of 10V/V or greater. The MAX4106/MAX4107 require only 15mA of supply current while delivering a 350MHz or a 300MHz bandwidth, respectively. Voltage noise is an ultra-low 0.75nV/√Hz, while a low-distortion architecture provides a spurious-free dynamic range (SFDR) of 63dB at 5MHz. These high-speed op amps have a wide output voltage swing of ±3.2V and a high current-drive capability of 80mA. MAX4106/MAX4107 350MHz, Ultra-Low-Noise Op Amps ABSOLUTE MAXIMUM RATINGS Power-Supply Voltage (VCC to VEE).......................................12V Voltage on Any Pin to Ground or Any Other Pin .........VCC to VEE Short-Circuit Duration (VOUT to GND)........................Continuous Continuous Power Dissipation (TA = +70°C) SO (derate 5.88mW/°C above +70°C) ........................471mW Operating Temperature Range MAX4106ESA/MAX4107ESA ..........................-40°C to +85°C Storage Temperature Range .............................-65°C to +160°C Junction Temperature ......................................................+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. ELECTRICAL CHARACTERISTICS (VCC = 5V, VEE = -5V, TA = TMIN to TMAX, typical values are at TA = +25°C, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX 3 UNITS DC SPECIFICATIONS Input Offset Voltage Input Offset Voltage Drift Input Bias Current Input Offset Current VOS VOUT = 0V 0.250 TCVOS VOUT = 0V 1.0 mV µV/°C IB VOUT = 0V, VIN = -VOS 18 26 µA IOS VOUT = 0V, VIN = -VOS 0.05 2 µA Common-Mode Input Resistance RINCM Either input 1 MΩ Common-Mode Input Capacitance CINCM Either input 1 pF f = 10kHz 0.75 nV/√Hz f = 1MHz to 100MHz 9.5 µVRMS f = 10kHz 2.5 pA/√Hz Input Voltage Noise Integrated Voltage Noise Input Current Noise Integrated Current Noise en EnRMS In InRMS f = 1MHz to 100MHz Common-Mode Input Voltage VCM Common-Mode Rejection CMR VCM = ±2.5V Power-Supply Rejection PSR VS = ±4.5V to ±5.5V AVOL VOUT = ±2.0V, VCM = 0V Open-Loop Voltage Gain Supply Current IS Output Voltage Swing VOUT Output Current Drive IOUT Short-Circuit Output Current 2 ISC 31 -2.5 100 dB dB 75 100 80 100 RL = 100Ω 80 100 RL = ∞ ±3.2 ±3.8 RL = 100Ω ±3.0 ±3.5 VIN = 0V Short to ground V 70 RL = ∞ RL = 30Ω, TA = 0°C to +85°C nARMS 2.5 15 65 dB 19 mA V 80 mA 90 mA _______________________________________________________________________________________ 350MHz, Ultra-Low-Noise Op Amps (VCC = 5V, VEE = -5V, TA = TMIN to TMAX, typical values are at TA = +25°C, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS AC SPECIFICATIONS -3dB Bandwidth BW-3dB 0.1dB Bandwidth BW0.1dB Slew Rate SR Settling Time tS Rise/Fall Times tR, tF VOUT ≤ 0.1VRMS 75 45 MAX4106 275 MAX4107 500 -1V ≤ VOUT ≤ 1V, RL = 100Ω, to 0.1% MAX4106 13 MAX4107 13 -1V ≤ VOUT ≤ 1V, RL = 100Ω, to 0.01% MAX4106 18 MAX4107 18 10% to 90%, -2V ≤ VOUT ≤ 2V, RL = 100Ω MAX4106 13 MAX4107 6 10% to 90%, -50mV ≤ VOUT ≤ 50mV, RL = 100Ω MAX4106 1 -2V ≤ VOUT ≤ 2V f = 3.58MHz Differential Phase DP f = 3.58MHz CIN ZOUT Spurious-Free Dynamic Range SFDR Two-Tone Third-Order Intercept IP3 300 MAX4107, AVCL = +10 DG Output Impedance 350 MAX4107 MAX4106, AVCL = +5 Differential Gain Input Capacitance MAX4106 MAX4107 1 MAX4106, AVCL = +5 0.04 MAX4107, AVCL = +10 0.03 MAX4106, AVCL = +5 0.02 MAX4107, AVCL = +10 0.03 f = 10MHz fC = 5MHz, VOUT = 2Vp-p fC = 10MHz MHz MHz V/µs ns ns % degrees 2 pF 0.7 Ω MAX4106, AVCL = +5 63 MAX4107, AVCL = +10 60 24 dBc dBm _______________________________________________________________________________________ 3 MAX4106/MAX4107 ELECTRICAL CHARACTERISTICS (continued) __________________________________________Typical Operating Characteristics (VCC = +5V, VEE = -5V, RL = 100Ω, TA = +25°C, unless otherwise noted.) MAX4106 SMALL-SIGNAL GAIN vs. FREQUENCY (AVCL = +5, +6) 14 AVCL = +5 13 21 20 19 18 20 19 18 12 17 17 11 16 16 10 15 15 9 0.1M 1M 10M 100M 14 0.1M 1G 1M 10M 100M 14 0.1M 1G 1M 10M 100M FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) MAX4107 SMALL-SIGNAL GAIN vs. FREQUENCY (AVCL = +20) VOLTAGE NOISE vs. FREQUENCY CURRENT NOISE vs. FREQUENCY VOLTAGE NOISE (nV/√Hz) 28 27 26 25 24 23 22 100 CURRENT NOISE (pA/√Hz) 29 1 1G MAX4106/7-06 10 MAX4106/7-04 30 GAIN (dB) 22 21 GAIN (dB) 15 23 22 MAX4106/7-05 GAIN (dB) GAIN (dB) AVCL = +6 MAX4106/7-03 23 17 24 MAX4106/7-02 24 MAX4106/7-01 18 16 MAX4107 SMALL-SIGNAL GAIN vs. FREQUENCY (AVCL = +10) MAX4106 SMALL-SIGNAL GAIN vs. FREQUENCY (AVCL = +10) 19 10 21 1G 1 MAX4106/7-07 MAX4106 SMALL-SIGNAL PULSE RESPONSE (AVCL = +5) GND OUT TIME (20ns/div) 100 1k 10k 100k 1M 1 10M 10 100 1k 10k 100k 1M FREQUENCY (Hz, Log) FREQUENCY (Hz, Log) MAX4106 SMALL-SIGNAL PULSE RESPONSE (AVCL = +10) MAX4106 LARGE-SIGNAL PULSE RESPONSE (AVCL = +5) IN VOLTAGE (20mV/div) IN 10 GND OUT TIME (20ns/div) 10M MAX4106/7-09 100M IN VOLTAGE (1V/div) 10M FREQUENCY (Hz) 4 1 0.1 1M MAX4106/7-08 20 0.1M VOLTAGE (20mV/div) MAX4106/MAX4107 350MHz, Ultra-Low-Noise Op Amps OUT GND TIME (20ns/div) _______________________________________________________________________________________ 350MHz, Ultra-Low-Noise Op Amps GND 7k 2.2k IN 708 GND OUT RESISTANCE (Ω) VOLTAGE (1V/div) GND CLOSED-LOOP OUTPUT IMPEDANCE vs. FREQUENCY MAX4106/7-14 MAX4107 LARGE-SIGNAL PULSE RESPONSE (AVCL = +20) GND OUT TIME (10ns/div) TIME (10ns/div) MAX4107 LARGE-SIGNAL PULSE RESPONSE (AVCL = +10) OUT MAX4106/7-12 IN VOLTAGE (20mV/div) OUT TIME (20ns/div) IN VOLTAGE (1V/div) VOLTAGE (20mV/div) GND MAX4106/7-11 MAX4106/7-10 OUT IN MAX4106/7-13 VOLTAGE (1V/div) IN MAX4107 SMALL-SIGNAL PULSE RESPONSE (AVCL = +20) MAX4107 SMALL-SIGNAL PULSE RESPONSE (AVCL = +10) MAX4106/7-15 MAX4106 LARGE-SIGNAL PULSE RESPONSE (AVCL = +10) 224 70.7 22.4 7.1 2.2 0.7 0.2 TIME (10ns/div) 0.07 0.1M TIME (10ns/div) 1M 10M 100M 1G FREQUENCY (Hz) MAX4106 COMMON-MODE REJECTION vs. FREQUENCY 75 100 CMR (dB) PSR (dB) 80 60 40 20 120 65 100 55 80 45 35 25 0 140 CMR (dB) 120 MAX4106/7-17 85 MAX4106/7-16 140 MAX4107 COMMON-MODE REJECTION vs. FREQUENCY 60 40 20 -20 15 0 -40 5 -20 -60 0.1M -5 1M 10M 100M FREQUENCY (Hz) 1G MAX4106/7-18 POWER-SUPPLY REJECTION vs. FREQUENCY -40 10k 100k 1M 10M FREQUENCY (Hz) 100M 1G 30k 100k 1M 10M 100M 1G FREQUENCY (Hz) _______________________________________________________________________________________ 5 MAX4106/MAX4107 ____________________________Typical Operating Characteristics (continued) (VCC = +5V, VEE = -5V, RL = 100Ω, TA = +25°C, unless otherwise noted.) ____________________________Typical Operating Characteristics (continued) (VCC = +5V, VEE = -5V, RL = 100Ω, TA = +25°C, unless otherwise noted.) MAX4106 HARMONIC DISTORTION vs. FREQUENCY (AVCL = +5) MAX4107 25 20 MAX4106 15 10 5 -20 3RD HARMONIC -30 -40 -50 2ND HARMONIC -60 -70 -80 VO = 2Vp-p RL = 100Ω -30 2ND HARMONIC -50 -70 -90 3RD HARMONIC -100 1 10 100 -110 0.1 1 10 100 0.1 1 10 100 FREQUENCY (MHz) FREQUENCY (MHz) FREQUENCY (MHz) MAX4107 HARMONIC DISTORTION vs. FREQUENCY (AVCL = +20) MAX4106 5MHz HARMONIC DISTORTION vs. LOAD RESISITANCE MAX4107 5MHz HARMONIC DISTORTION vs. LOAD RESISTANCE 2ND HARMONIC -40 -50 -60 -70 -80 3RD HARMONIC -90 -20 -30 -40 -50 -60 2ND HARMONIC -70 -80 3RD HARMONIC -90 10M 0 100M 200 FREQUENCY (Hz) 400 600 800 2ND HARMONIC -70 3RD HARMONIC -20 -30 2.0 2.5 3.0 3.5 OUTPUT SWING (VP-P) 4.0 0.06 0.04 0.02 0.00 -0.02 -0.04 -0.06 0.03 0.02 0.01 0.00 -0.01 -0.02 -0.03 -40 -50 -70 -80 3RD HARMONIC 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 OUTPUT SWING (VP-P) MAX4106/7-24 400 600 RL = 150Ω 0 2ND HARMONIC -60 200 800 1000 MAX4106 DIFFERENTIAL GAIN AND PHASE -100 1.0 1.5 0 LOAD RESISTANCE (Ω) MAX4106/7-26 AVCL = +10 RL = 100Ω -10 -90 -110 0.5 3RD HARMONIC -90 DIFF. GAIN (%) -30 0 HARMONIC DISTORTION (dBc) AVCL = +5 RL = 100Ω 0 2ND HARMONIC -70 1000 MAX4107 5MHz HARMONIC DISTORTION vs. OUTPUT SWING MAX4106/7-25 10 -90 -50 LOAD RESISTANCE (Ω) MAX4106 5MHz HARMONIC DISTORTION vs. OUTPUT SWING -50 -30 DIFF. PHASE (°) 1M AVCL = +10 VO = 2Vp-p -10 -110 -100 -100 0.1M -10 10 4.0 MAX4106/7-27 -30 AVCL = +5 VO = 2Vp-p -10 HARMONIC DISTORTION (dBc) -20 0 MAX4106/7-23 -10 HARMONIC DISTORTION (dBc) MAX4106/7-22 0 6 -10 MAX4106/7-21 VO = 2Vp-p RL = 100Ω -10 -90 0 HARMONIC DISTORTION (dBc) MAX4106/7-20 30 0 HARMONIC DISTORTION (dBc) MAX4106/7-19 THIRD-ORDER INTERCEPT (dBm) 35 MAX4107 HARMONIC DISTORTION vs. FREQUENCY (AVCL = +10) HARMONIC DISTORTION (dBc) TWO-TONE THIRD-ORDER INTERCEPT vs. FREQUENCY HARMONIC DISTORTION (dBc) MAX4106/MAX4107 350MHz, Ultra-Low-Noise Op Amps IRE 100 IRE 100 RL = 150Ω 0 _______________________________________________________________________________________ 350MHz, Ultra-Low-Noise Op Amps OUTPUT SWING vs. LOAD RESISTANCE IRE 100 MAX4106/7-29 6.5 6.0 5.5 5.0 50 70 90 110 130 150 -75 -50 -25 SUPPLY CURRENT (mA) 15 -3.5 -3.6 RL = ∞ ICC 10 5 0 -5 -10 28 26 24 22 20 18 16 14 -15 -3.9 12 10 -20 0 25 50 75 100 125 150 -75 -50 -25 TEMPERATURE (°C) 0 25 -75 -50 -25 50 75 100 125 150 0.19 0.17 0.15 0.13 0.11 0.09 0.07 0.40 INPUT OFFSET VOLTAGE (mV) MAX4106/7-34 0.21 25 50 75 100 125 150 INPUT OFFSET VOLTAGE vs. TEMPERATURE INPUT OFFSET CURRENT vs. TEMPERATURE 0.23 0 TEMPERATURE (°C) TEMPERATURE (°C) MAX4106/7-35 -75 -50 -25 50 75 100 125 150 30 IEE -3.8 25 INPUT BIAS CURRENT vs. TEMPERATURE MAX4106/7-32 MAX4106/7-31 20 0 TEMPERATURE (°C) POWER-SUPPLY CURRENT vs. TEMPERATURE RL = 100Ω INPUT OFFSET CURRENT (µA) NEGATIVE OUTPUT VOLTAGE (V) 3.4 LOAD RESISTANCE (Ω) 100 -3.3 RL = 100Ω 3.5 INPUT BIAS CURRENT (µA) IRE NEGATIVE OUTPUT VOLTAGE SWING vs. TEMPERATURE -3.7 3.6 3.3 30 0 -3.4 3.7 4.5 -0.04 RL = ∞ 3.8 MAX4106/7-33 0 0.02 0.01 0.00 -0.01 -0.02 -0.03 3.9 POSITIVE OUTPUT VOLTAGE (V) 0.00 -0.04 DIFF. PHASE (°) 7.0 0.02 -0.02 POSITIVE OUTPUT VOLTAGE SWING vs. TEMPERATURE 7.5 MAX4106/7-28 0.04 OUTPUT SWING (VP-P) DIFF. GAIN (%) 0.06 MAX4106/7-30 MAX4107 DIFFERENTIAL GAIN AND PHASE 0.35 0.30 0.25 0.20 0.15 0.05 0.10 0.03 -75 -50 -25 0 25 50 75 100 125 150 TEMPERATURE (°C) -75 -50 -25 0 25 50 75 100 125 150 TEMPERATURE (°C) _______________________________________________________________________________________ 7 MAX4106/MAX4107 ____________________________Typical Operating Characteristics (continued) (VCC = +5V, VEE = -5V, RL = 100Ω, TA = +25°C, unless otherwise noted.) _____________________Pin Description PIN NAME FUNCTION 1, 5, 8 N.C. No Connection, not internally connected 2 IN- Inverting Input 3 IN+ Noninverting Input 4 VEE Negative Power Supply, connect to -5V 6 OUT Amplifier Output 7 VCC Positive Power Supply, connect to +5V Driving Capacitive Loads _______________General Description Choosing Resistor Values The values of the gain-setting feedback and input resistors are important design considerations. Large resistor values will increase voltage noise, and will interact with the amplifier’s input and PC board capacitance to generate undesirable poles and zeros, which can decrease bandwidth or cause oscillations. For example, a noninverting gain of +5 (MAX4106), using a 1kΩ feedback resistor combined with 2pF of input capacitance and 0.5pF of board capacitance, will cause a feedback pole at 318MHz. If this pole is within the anticipated amplifier bandwidth, it will jeopardize stability. Reducing the 1kΩ feedback resistor to 40Ω will extend the pole frequency to 8GHz, but could limit output swing by adding 50Ω in parallel with the amplifier’s load. Clearly the selection of resistor values must be tailored to the specific application. The MAX4106/MAX4107 are optimized for AC performance. They are not designed to drive highly reactive loads. Reactive loads will decrease phase margin and may produce excessive ringing and oscillation. Figure 1a shows a circuit that eliminates this problem, and Figure 1b is a graph of the optimal isolation resistor (RS) vs. capacitive load. Figures 2a and 2b show how a capacitive load causes excessive peaking of the amplifier’s bandwidth if the capacitive load is not isolated (RS) from the amplifier. A small isolation resistor (usually 10Ω to 20Ω) placed before the reactive load prevents ringing and oscillation. At higher capacitive loads, AC performance will be controlled by the interaction of the load capacitance and isolation resistor. Figures 3a and 3b show the effect of an isolation resistor on the MAX4106/MAX4107 closed-loop response. Coaxial cable and other transmission lines are easily driven when terminated at both ends with their characteristic impedance. When driving back-terminated transmission lines, the capacitance of the transmission line is essentially eliminated. RF 30 MAX4106/7-1B RG 30Ω The MAX4106/MAX4107 are ultra-low-noise, high-bandwidth op amps. The output noise voltage can be dominated by resistor thermal noise, so keep the feedback and input resistors small. Setting the input resistor to 30Ω and choosing the feedback resistor to suit the gain will provide excellent AC performance without significantly degrading noise performance. 25 RS VIN MAX4106 MAX4107 CL RL RESISTANCE (Ω) MAX4106/MAX4107 350MHz, Ultra-Low-Noise Op Amps MAX4107 20 15 10 MAX4106 5 PART MAX4106 MAX4107 RF (Ω) 120 270 GAIN (V/V) +5 +10 Figure 1a. Using an Isolation Resistor for High Capacitive Loads 8 0 10 40 70 100 130 160 190 220 CAPACITANCE (pF) Figure 1b. Optimal Isolation Resistor (RS) vs. Capacitive Load _______________________________________________________________________________________ 350MHz, Ultra-Low-Noise Op Amps CL = 10pF 18 16 14 CL = 5pF 12 24 10 RS = 0Ω AVCL = +10 CL = 10pF 22 20 18 CL = 5pF 16 14 12 8 1M 10M 100M 10 0.1M 1G 1M RS = 10Ω 16 14 12 RS = 22Ω 10 8 6 4 0.1M 26 24 CLOSED-LOOP GAIN (dB) CLOSED-LOOP GAIN (dB) RS = 4.7Ω CL = 10pF AVCL = +5 100M 1G Figure 2b. MAX4107 Response vs. Capacitive Load—No Isolation (RS) Resistor (circuit shown in Figure 1) MAX4106/7-3A Figure 2a. MAX4106 Response vs. Capacitive Load—No Resistive (RS) Isolation (circuit shown in Figure 1) 20 10M FREQUENCY (Hz) FREQUENCY (Hz) CL = 10pF AVCL = +10 RS = 2.2Ω MAX4106/7-3B 6 0.1M 18 CL = 15pF MAX4106/7-2B MAX4106/7-2A 26 CLOSED-LOOP GAIN (dB) CLOSED-LOOP GAIN (dB) 20 RS = 0Ω AVCL = +5 MAX4106/MAX4107 22 22 20 RS = 10Ω 18 RS = 22Ω 16 14 12 1M 10M 100M 1G FREQUENCY (Hz) Figure 3a. MAX4106 Response vs. Capacitive Load with Resistive (RS) Isolation (circuit shown in Figure 1) 10 0.1M 1M 10M 100M 1G FREQUENCY (Hz) Figure 3b. MAX4107 Response vs. Capacitive Load with Resistive (RS) Isolation (circuit shown in Figure 1) _______________________________________________________________________________________ 9 MAX4106/MAX4107 350MHz, Ultra-Low-Noise Op Amps ___________________Chip Information TRANSISTOR COUNT: 55 ________________________________________________________Package Information DIM D 0°-8° A 0.101mm 0.004in. e B A1 E 10 C H L Narrow SO SMALL-OUTLINE PACKAGE (0.150 in.) A A1 B C E e H L INCHES MAX MIN 0.069 0.053 0.010 0.004 0.019 0.014 0.010 0.007 0.157 0.150 0.050 0.244 0.228 0.050 0.016 DIM PINS D D D 8 14 16 MILLIMETERS MIN MAX 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 3.80 4.00 1.27 5.80 6.20 0.40 1.27 INCHES MILLIMETERS MIN MAX MIN MAX 0.189 0.197 4.80 5.00 0.337 0.344 8.55 8.75 0.386 0.394 9.80 10.00 ______________________________________________________________________________________ 21-0041A 350MHz, Ultra-Low-Noise Op Amps MAX4106/MAX4107 ______________________________________________________________________________________ 11 MAX4106/MAX4107 350MHz, Ultra-Low-Noise Op Amps 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. 12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 1995 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.