AD8350AR20

a FEATURES High Dynamic Range Output IP3: +22 dBm: Re 50 @ 250 MHz Low Noise Figure: 5.9 dB @ 250 MHz Two Gain Versions: AD8350-15 15 dB AD8350-20 20 dB –3 dB Bandwidth: 1.0 GHz Single Supply Operation: +5 V to +10 V Supply Current: 28 mA Input/Output Impedance: 200 Single-Ended or Differential Input Drive 8-Lead SOIC Package APPLICATIONS Cellular Base Stations Communications Receivers RF/IF Gain Block Differential A-to-D Driver SAW Filter Interface Single-Ended to Differential Conversion High Performance Video High Speed Data Transmission PRODUCT DESCRIPTION Low Distortion 1.0 GHz Differential Amplifier AD8350 FUNCTIONAL BLOCK DIAGRAMS 8-Lead SOIC Package (with Enable) IN+ 1 ENBL 2 8 IN– GND GND OUT– + – 7 6 5 VCC 3 OUT+ 4 AD8350 The AD8350 series are high performance fully-differential amplifiers useful in RF and IF circuits up to 1000 MHz. The amplifier has excellent noise figure of 5.9 dB at 250 MHz. It offers a high output third order intercept (OIP3) of +22 dBm at 250 MHz. Gain versions of 15 dB and 20 dB are offered. The AD8350 is designed to meet the demanding performance requirements of communications transceiver applications. It enables a high dynamic range differential signal chain, with exceptional linearity and increased common-mode rejection. The device can be used as a general purpose gain block, an A-to-D driver, and high speed data interface driver, among other functions. The AD8350 input can also be used as a singleended-to-differential converter. The amplifier can be operated down to +5 V with an OIP3 of +22 dBm at 250 MHz and slightly reduced distortion performance. The wide bandwidth, high dynamic range and temperature stability make this product ideal for the various RF and IF frequencies required in cellular, CATV, broadband, instrumentation and other applications. The AD8350 is offered in an 8-lead single SOIC package. It operates from +5 V and +10 V power supplies, drawing 28 mA typical. The AD8350 offers a power enable function for powersensitive applications. The AD8350 is fabricated using Analog Devices’ proprietary high speed complementary bipolar process. The device is available in the industrial (–40° C to +85°C) temperature range. 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 1999 +25 C, V G 15 dB, unless otherwise AD8350-15–SPECIFICATIONS (@differential = +5 V,and=differential outputs unlessnoted. All specifications refer to inputs noted.) S Parameter DYNAMIC PERFORMANCE –3 dB Bandwidth Bandwidth for 0.1 dB Flatness Slew Rate Settling Time Gain (S21)1 Gain Supply Sensitivity Gain Temperature Sensitivity Isolation (S12)1 NOISE/HARMONIC PERFORMANCE 50 MHz Signal Second Harmonic Third Harmonic Output Second Order Intercept2 Output Third Order Intercept2 250 MHz Signal Second Harmonic Third Harmonic Output Second Order Intercept2 Output Third Order Intercept2 1 dB Compression Point (RTI)2 Voltage Noise (RTI) Noise Figure INPUT/OUTPUT CHARACTERISTICS Differential Offset Voltage (RTI) Differential Offset Drift Input Bias Current Input Resistance Input Capacitance CMRR Output Resistance Output Capacitance POWER SUPPLY Operating Range Quiescent Current Conditions VS = +5 V, VOUT = 1 V p-p VS = +10 V, VOUT = 1 V p-p VS = +5 V, VOUT = 1 V p-p VS = +10 V, VOUT = 1 V p-p VOUT = 1 V p-p 0.1%, VOUT = 1 V p-p VS = +5 V, f = 50 MHz VS = +5 V to +10 V, f = 50 MHz TMIN to TMAX f = 50 MHz Min Typ 0.9 1.1 270 270 2000 10 15 0.003 –0.002 –18 Max Units GHz GHz MHz MHz V/µs ns dB dB/V dB/°C dB 14 16 VS = +5 V, VOUT = 1 V p-p VS = +10 V, VOUT = 1 V p-p VS = +5 V, VOUT = 1 V p-p VS = +10 V, VOUT = 1 V p-p VS = +5 V VS = +10 V VS = +5 V VS = +10 V VS = +5 V, VOUT = 1 V p-p VS = +10 V, VOUT = 1 V p-p VS = +5 V, VOUT = 1 V p-p VS = +10 V, VOUT = 1 V p-p VS = +5 V VS = +10 V VS = +5 V VS = +10 V VS = +5 V VS = +10 V f = 150 MHz f = 150 MHz VOUT+ – VOUT– TMIN to TMAX Real f = 50 MHz Real –66 –67 –65 –70 52 52 22 23 –48 –49 –52 –61 33 34 18 22 2 5 1.7 6.8 ±1 0.02 15 200 2 –67 200 2 +4 25 3 27 3 +11.0 32 5.5 34 6.5 dBc dBc dBc dBc dBm dBm dBm dBm dBc dBc dBc dBc dBm dBm dBm dBm dBm dBm nV/√Hz dB mV mV/°C µA Ω pF dB Ω pF V mA mA mA mA ns dB °C Powered Up, VS = +5 V Powered Down, VS = +5 V Powered Up, VS = +10 V Powered Down, VS = +10 V f = 50 MHz, VS ∆ = 1 V p-p Power-Up/Down Switching Power Supply Rejection Ratio OPERATING TEMPERATURE RANGE NOTES 1 See Tables I–IV for complete list of S-Parameters. 2 Re: 50 Ω. Specifications subject to change without notice. 28 3.8 30 4 15 –58 –40 +85 –2– REV. 0 AD8350-20–SPECIFICATIONS Parameter DYNAMIC PERFORMANCE –3 dB Bandwidth Bandwidth for 0.1 dB Flatness Slew Rate Settling Time Gain (S21)1 Gain Supply Sensitivity Gain Temperature Sensitivity Isolation (S12)1 NOISE / HARMONIC PERFORMANCE 50 MHz Signal Second Harmonic Third Harmonic Output Second Order Intercept2 Output Third Order Intercept2 250 MHz Signal Second Harmonic Third Harmonic Output Second Order Intercept2 Output Third Order Intercept2 1 dB Compression Point (RTI)2 Voltage Noise (RTI) Noise Figure INPUT/OUTPUT CHARACTERISTICS Differential Offset Voltage (RTI) Differential Offset Drift Input Bias Current Input Resistance Input Capacitance CMRR Output Resistance Output Capacitance POWER SUPPLY Operating Range Quiescent Current Conditions (@ +25 C, VS = +5 V, G = 20 dB, unless otherwise noted. All specifications refer to differential inputs and differential outputs unless noted.) Min Typ 0.7 0.9 230 200 2000 15 20 0.003 –0.002 –22 Max AD8350 Units GHz GHz MHz MHz V/µs ns dB dB/V dB/°C dB VS = +5 V, VOUT = 1 V p-p VS = +10 V, VOUT = 1 V p-p VS = +5 V, VOUT = 1 V p-p VS = +10 V, VOUT = 1 V p-p VOUT = 1 V p-p 0.1%, VOUT = 1 V p-p VS = +5 V, f = 50 MHz VS = +5 V to +10 V, f = 50 MHz TMIN to TMAX f = 50 MHz 19 21 VS = +5 V, VOUT = 1 V p-p VS = +10 V, VOUT = 1 V p-p VS = +5 V, VOUT = 1 V p-p VS = +10 V, VOUT = 1 V p-p VS = +5 V VS = +10 V VS = +5 V VS = +10 V VS = +5 V, VOUT = 1 V p-p VS = +10 V, VOUT = 1 V p-p VS = +5 V, VOUT = 1 V p-p VS = +10 V, VOUT = 1 V p-p VS = +5 V VS = +10 V VS = +5 V VS = +10 V VS = +5 V VS = +10 V f = 150 MHz f = 150 MHz VOUT+ – VOUT– TMIN to TMAX Real f = 50 MHz Real –65 –66 –66 –70 50 50 22 23 –45 –46 –55 –60 31 32 18 22 –2.6 1.8 1.7 5.6 ±1 0.02 15 200 2 –52 200 2 +4 25 3 27 3 +11.0 32 5.5 34 6.5 dBc dBc dBc dBc dBm dBm dBm dBm dBc dBc dBc dBc dBm dBm dBm dBm dBm dBm nV/√Hz dB mV mV/°C µA Ω pF dB Ω pF V mA mA mA mA ns dB °C Powered Up, VS = +5 V Powered Down, VS = +5 V Powered Up, VS = +10 V Powered Down, VS = +10 V f = 50 MHz, VS ∆ = 1 V p-p Power-Up/Down Switching Power Supply Rejection Ratio OPERATING TEMPERATURE RANGE NOTES 1 See Tables I–IV for complete list of S-Parameters. 2 Re: 50 Ω. Specifications subject to change without notice. 28 3.8 30 4 15 –45 –40 +85 REV. 0 –3– AD8350 ABSOLUTE MAXIMUM RATINGS* PIN FUNCTION DESCRIPTIONS Supply Voltage, VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . +11 V Input Power Differential . . . . . . . . . . . . . . . . . . . . . . . +8 dBm Internal Power Dissipation . . . . . . . . . . . . . . . . . . . . . 400 mW θJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100°C/W Maximum Junction Temperature . . . . . . . . . . . . . . . . +125°C Operating Temperature Range . . . . . . . . . . . . –40°C to +85°C Storage Temperature Range . . . . . . . . . . . . . –65°C to +150°C Lead Temperature Range (Soldering 60 sec) . . . . . . . . +300°C *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 indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may effect device reliability. Pin 1, 8 Function IN+, IN– Description Differential Inputs. IN+ and IN– should be ac-coupled (pins have a dc bias of midsupply). Differential input impedance is 200 Ω. Power-up Pin. A high level (5 V) enables the device; a low level (0 V) puts device in sleep mode. Positive Supply Voltage. +5 V to +10 V. Differential Outputs. OUT+ and OUT– should be ac-coupled (pins have a dc bias of midsupply). Differential input impedance is 200 Ω. Common External Ground Reference. 2 ENBL 3 4, 5 VCC OUT+, OUT– PIN CONFIGURATION 6, 7 IN+ 1 ENBL 2 8 GND IN– GND TOP VIEW VCC 3 (Not to Scale) 6 GND 7 5 AD8350 OUT+ 4 OUT– ORDERING GUIDE Model AD8350AR15 AD8350AR15-REEL1 AD8350AR15-REEL72 AD8350AR15-EVAL AD8350AR20 AD8350AR20-REEL1 AD8350AR20-REEL72 AD8350AR20-EVAL NOTES 1 13" Reels of 2500 each. 2 7" Reels of 750 each. Temperature Range Package Description –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-Lead SOIC 8-Lead SOIC 8-Lead SOIC Evaluation Board (15 dB) 8-Lead SOIC 8-Lead SOIC 8-Lead SOIC Evaluation Board (20 dB) Package Option SO-8 SO-8 SO-8 SO-8 SO-8 SO-8 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 the AD8350 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. WARNING! ESD SENSITIVE DEVICE –4– REV. 0 Typical Performance Characteristics– AD8350 50 20 25 VCC = 10V SUPPLY CURRENT – mA 40 VCC = 10V GAIN – dB 15 VCC = 10V GAIN – dB 20 VCC = 5V 15 30 VCC = 5V 20 10 5 10 VCC = 5V 10 0 –40 –20 0 20 40 TEMPERATURE – C 0 60 80 1 10 100 1k FREQUENCY – MHz 10k 5 1 10 100 1k FREQUENCY – MHz 10k Figure 1. Supply Current vs. Temperature Figure 2. AD8350-15 Gain (S21) vs. Frequency Figure 3. AD8350-20 Gain (S21) vs. Frequency 350 350 500 300 300 400 VCC = 10V IMPEDANCE – IMPEDANCE – 250 VCC = 10V 250 IMPEDANCE – VCC = 10V 300 200 VCC = 5V 150 200 200 VCC = 5V 150 VCC = 5V 100 100 1 10 100 FREQUENCY – MHz 1k 100 1 10 100 FREQUENCY – MHz 1k 0 1 10 100 FREQUENCY – MHz 1k Figure 4. AD8350-15 Input Impedance vs. Frequency Figure 5. AD8350-20 Input Impedance vs. Frequency Figure 6. AD8350-15 Output Impedance vs. Frequency 500 –5 –10 400 –10 IMPEDANCE – VCC = 5V 300 ISOLATION – dB –15 ISOLATION – dB VCC = 10V –20 –15 VCC = 10V 200 VCC = 10V 100 –20 VCC = 5V –25 VCC = 5V 0 1 10 100 FREQUENCY – MHz 1k –25 1 10 100 1k FREQUENCY – MHz 10k –30 1 10 100 1k FREQUENCY – MHz 10k Figure 7. AD8350-20 Output Impedance vs. Frequency Figure 8. AD8350-15 Isolation (S12) vs. Frequency Figure 9. AD8350-20 Isolation (S12) vs. Frequency REV. 0 –5– AD8350 –40 VOUT = 1V p-p –45 –50 –55 –60 –65 HD3 (VCC = 10V) –70 –75 –80 0 HD3 (VCC = 5V) HD2 (VCC = 10V) DISTORTION – dBc –40 VOUT = 1V p-p –45 –50 HD2 (VCC = 10V) –55 –60 –65 –70 –75 HD3 (VCC = 5V) HD3 (VCC = 10V) HD2 (VCC = 5V) DISTORTION – dBc –45 FO = 50MHz HD3 (VCC = 5V) DISTORTION – dBc HD2 (VCC = 5V) –55 HD2 (VCC = 5V) –65 HD2 (VCC = 10V) –75 HD3 (VCC = 10V) 50 100 150 200 250 300 FUNDAMENTAL FREQUENCY – MHz –80 –85 0 50 100 150 200 250 300 FUNDAMENTAL FREQUENCY – MHz 0 0.5 1 1.5 2 2.5 3 OUTPUT VOLTAGE – V p-p 3.5 Figure 10. AD8350-15 Harmonic Distortion vs. Frequency Figure 11. AD8350-20 Harmonic Distortion vs. Frequency Figure 12. AD8350-15 Harmonic Distortion vs. Differential Output Voltage –45 FO = 50MHz 60 HD2 (VCC = 5V) 55 OIP2 – dBm (Re: 50 ) 60 55 HD3 (VCC = 5V) OIP2 – dBm (Re: 50 ) DISTORTION – dBc –55 50 VCC = 10V 50 VCC = 10V –65 HD2 (VCC = 10V) HD3 (VCC = 10V) 45 VCC = 5V 45 VCC = 5V 40 40 –75 35 35 –85 0 0.5 1 1.5 2 2.5 3 OUTPUT VOLTAGE – V p-p 3.5 30 30 0 50 100 150 200 FREQUENCY – MHz 250 300 0 50 100 150 200 FREQUENCY – MHz 250 300 Figure 13. AD8350-20 Harmonic Distortion vs. Differential Output Voltage Figure 14. AD8350-15 Output Referred IP2 vs. Frequency Figure 15. AD8350-20 Output Referred IP2 vs. Frequency 35 30 OIP3 – dBm (Re: 50 ) OIP3 – dBm (Re: 50 ) 35 10.0 1dB COMPRESSION – dBm (Re: 50 ) INPUT REFERRED VCC = 10V 30 7.5 VCC = 10V 25 VCC = 10V 25 5.0 2.5 20 VCC = 5V 20 15 15 0 VCC = 5V VCC = 5V 10 10 –2.5 5 0 50 100 150 200 FREQUENCY – MHz 250 300 5 0 –5.0 50 100 150 200 FREQUENCY – MHz 250 300 0 100 200 300 400 FREQUENCY – MHz 500 600 Figure 16. AD8350-15 Output Referred IP3 vs. Frequency Figure 17. AD8350-20 Output Referred IP3 vs. Frequency Figure 18. AD8350-15 1 dB Compression vs. Frequency –6– REV. 0 AD8350 7.5 1dB COMPRESSION – dBm (Re: 50 ) INPUT REFERRED 5.0 2.5 0 VCC = 10V NOISE FIGURE – dB 10 10 9 9 NOISE FIGURE – dB 8 8 VCC = 10V VCC = 10V 7 VCC = 5V 6 7 –2.5 VCC = 5V –5.0 –7.5 6 VCC = 5V 0 100 200 300 400 FREQUENCY – MHz 500 600 5 5 0 50 100 150 200 250 300 350 400 450 500 FREQUENCY – MHz 0 50 100 150 200 250 300 350 400 450 500 FREQUENCY – MHz Figure 19. AD8350-20 1 dB Compression vs. Frequency Figure 20. AD8350-15 Noise Figure vs. Frequency Figure 21. AD8350-20 Noise Figure vs. Frequency 25 20 100 AD8350-20 –20 VCC = 5V –30 –40 VOUT – (VCC = 5V) 50 OUTPUT OFFSET – mV VOUT + (VCC = 5V) 15 10 AD8350-15 0 GAIN – dB PSRR – dB 5 0 –5 –50 –100 –150 –200 –250 –40 –50 –60 –70 AD8350-20 VOUT + (VCC = 10V) AD8350-15 –10 –15 –20 1 2 3 4 6 7 VCC – Volts 5 8 9 10 VOUT – (VCC = 10V) –80 –90 –20 0 20 40 TEMPERATURE – C 60 80 1 10 100 FREQUENCY – MHz 1k Figure 22. AD8350 Gain (S21) vs. Supply Voltage Figure 23. AD8350 Output Offset Voltage vs. Temperature Figure 24. AD8350 PSRR vs. Frequency –20 –30 VCC = 5V AD8350-20 500mV VCC = 5V VOUT –40 PSRR – dB –50 –60 –70 –80 5V 30ns AD8350-15 ENBL –90 1 10 100 FREQUENCY – MHz 1k Figure 25. AD8350 CMRR vs. Frequency Figure 26. AD8350 Power-Up/Down Response Time REV. 0 –7– AD8350 APPLICATIONS Using the AD8350 Reactive Matching Figure 27 shows the basic connections for operating the AD8350. A single supply in the range +5 V to +10 V is required. The power supply pin should be decoupled using a 0.1 µF capacitor. The ENBL pin is tied to the positive supply or to +5 V (when VCC = +10 V) for normal operation and should be pulled to ground to put the device in sleep mode. Both the inputs and the outputs have dc bias levels at midsupply and should be ac-coupled. Also shown, in Figure 27, are the impedance balancing requirements, either resistive or reactive, of the input and output. With an input and output impedance of 200 Ω, the AD8350 should be driven by a 200 Ω source and loaded by a 200 Ω impedance. A reactive match can also be implemented. Figure 28 shows how the AD8350 can be driven by a singleended source. The unused input should be ac-coupled to ground. When driven single-ended, there will be a slight imbalance in the differential output voltages. This will cause an increase in the second order harmonic distortion (at 50 MHz, with VCC = +10 V and VOUT = 1 V p-p, –59 dBc was measured for the second harmonic on AD8350-15). In practical applications, the AD8350 will most likely be matched using reactive matching components as shown in Figure 29. Matching components can be calculated using a Smith Chart and the AD8350’s S-Parameters (see Tables I and II) along with those of the devices that are driving and loading it. The SParameters in Tables I and II assume a differential source and load impedance of 50 Ω. Because the load impedance on the output of the AD8350 affects the input impedance, a simultaneous conjugate match must be performed to correctly match both input and output. C1 8 7 6 5 C2 AD8350 L1 – + L2 1 2 3 4 C1 ENBL (+5V) C2 0.1 F +VS (+5V TO +10V) C2 Figure 29. Reactively Matching the Input and Output SOURCE Z = 100 C2 0.001 F 8 7 6 5 C4 0.001 F LOAD AD8350 – Z = 200 1 Z = 100 C1 0.001 F ENBL (+5V) + 2 3 4 C3 0.001 F C5 0.1 F +VS (+5V TO +10V) Figure 27. Basic Connections for Differential Drive LOAD C2 0.001 F 8 7 6 5 C4 0.001 F AD8350 – Z = 200 SOURCE Z = 200 C1 0.001 F 1 + 2 3 4 ENBL (+5V) C3 0.001 F C5 0.1 F +VS (+5V TO +10V) Figure 28. Basic Connections for Single-Ended Drive –8– REV. 0 AD8350 Figure 30 shows how the AD8350 input can be matched for a single-ended drive. The unused input is ac-coupled to ground using a low impedance (i.e., high value) capacitance. The SParameters for this configuration are shown in Tables III and IV. These values assume a single-ended source impedance of 50 Ω and a differential load impedance of 50 Ω. As in the case of a differential drive, a simultaneous conjugate match must be performed to correctly match both input and output. Evaluation Board Figure 31 shows the schematic of the AD8350 evaluation board as it is shipped from the factory. The board is configured to allow easy evaluation using single-ended 50 Ω test equipment. The input and output transformers have a 4-to-1 impedance ratio and transform the AD8350’s 200 Ω input and output impedances to 50 Ω. In this mode, 0 Ω resistors (R1 and R4) are required. To allow compensation for the insertion loss of the transformers, a calibration path is provided at Test In and Test Out. This consists of two transformers connected back to back. To drive and load the board differentially, transformers T1 and T2 should be removed and replaced with four 0 Ω resistors (0805 size); Resistors R1 and R4 (0 Ω) should also be removed. This yields a circuit with a broadband input and output impedance of 200 Ω. To match to impedances other than this, matching components (0805 size) can be placed on pads C1, C2, C3, C4, L1 and L2. 0.001 F 8 7 6 5 C2 AD8350 – L2 1 + 2 3 4 C1 L1 ENBL (+5V) C2 C2 0.1 F +VS (+5V TO +10V) Figure 30. Matching Circuit for Single-Ended Drive C1 0.001 F C3 0.001 F R1 0 IN– T1: TC4-1W (MINI CIRCUITS) 6 1 8 R2 0 7 6 5 R3 0 T2: TC4-1W (MINI CIRCUITS) AD8350 + L1 (OPEN) R4 0 OUT– – L2 (OPEN) 1 IN+ 1 2 3 4 6 OUT+ C2 0.001 F +VS A B 3 2 SW1 1 +VS C5 0.1 F C4 0.001 F TEST IN T3: TC4-1W (MINI CIRCUITS) 6 1 T4: TC4-1W (MINI CIRCUITS) TEST OUT 1 6 Figure 31. AD8350 Evaluation Board REV. 0 –9– AD8350 Table I. Typical S Parameters AD8350-15: V CC = 5 V, Differential Input Signal. ZSOURCE(diff) = 50 , ZLOAD(diff) = 50 Frequency (MHz) 50 100 150 200 250 S11 0.791 ∠ –3° 0.787 ∠ –6° 0.778 ∠ –9° 0.766 ∠ –13° 0.749 ∠ –17° S12 0.068 ∠ 177° 0.071 ∠ 174° 0.070 ∠ 172° 0.072 ∠ 168° 0.074 ∠ 165° S21 2.73 ∠ –3° 2.79 ∠ –7° 2.91 ∠ –11° 3.06 ∠ –16° 3.24 ∠ –21° S22 0.795 ∠ –2° 0.794 ∠ –5° 0.787 ∠ –7° 0.779 ∠ –10° 0.768 ∠ –12° Table II. Typical S Parameters AD8350-20: VCC = 5 V, Differential Input Signal. ZSOURCE(diff) = 50 , ZLOAD(diff) = 50 Frequency (MHz) 50 100 150 200 250 S11 0.810 ∠ –4° 0.795 ∠ –8° 0.790 ∠ –12° 0.776 ∠ –17° 0.757 ∠ –22° S12 0.046 ∠ 176° 0.043 ∠ 173° 0.045 ∠ 169° 0.046 ∠ 165° 0.048 ∠ 162° S21 4.82 ∠ –2.5° 4.99 ∠ –6.16° 5.30 ∠ –9.82° 5.71 ∠ –14.89° 6.25 ∠ –21.29° S22 0.822 ∠ –3° 0.809 ∠ –5° 0.807 ∠ –8° 0.795 ∠ –10° 0.783 ∠ –13° Table III. Typical S Parameters AD8350-15: VCC = 5 V, Single-Ended Input Signal. ZSOURCE(diff) = 50 , ZLOAD(diff) = 50 Frequency (MHz) 50 100 150 200 250 S11 0.718 ∠ –6° 0.701 ∠ –12° 0.683 ∠ –19° 0.657 ∠ –24° 0.625 ∠ –31° S12 0.068 ∠ 177° 0.066 ∠ 173° 0.067 ∠ 167° 0.069 ∠ 163° 0.070 ∠ 159° S21 2.62 ∠ –4° 2.66 ∠ –10° 2.76 ∠ –15° 2.86 ∠ –22° 2.98 ∠ –28° S22 0.798 ∠ –3° 0.794 ∠ –6° 0.789 ∠ –10° 0.776 ∠ –13° 0.763 ∠ –16° Table IV. Typical S Parameters AD8350-20: VCC = 5 V, Single-Ended Input Signal. ZSOURCE(diff) = 50 , ZLOAD(diff) = 50 Frequency (MHz) 50 100 150 200 250 S11 0.747 ∠ –7° 0.739 ∠ –14° 0.728 ∠ –21° 0.698 ∠ –29° 0.659 ∠ –37° S12 0.040 ∠ 175° 0.042 ∠ 170° 0.044 ∠ 166° 0.045 ∠ 161° 0.048 ∠ 156° S21 4.71 ∠ –4° 4.82 ∠ –9° 5.08 ∠ –15° 5.37 ∠ –22° 5.76 ∠ –30° S22 0.814 ∠ –3° 0.813 ∠ –6° 0.804 ∠ –10° 0.792 ∠ –13° 0.774 ∠ –16° –10– REV. 0 AD8350 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 8-Lead Plastic SOIC (SO-8) 0.1968 (5.00) 0.1890 (4.80) 8 5 4 0.1574 (4.00) 0.1497 (3.80) PIN 1 1 0.2440 (6.20) 0.2284 (5.80) 0.0500 (1.27) BSC 0.0098 (0.25) 0.0040 (0.10) SEATING PLANE 0.0688 (1.75) 0.0532 (1.35) 0.0192 (0.49) 0.0138 (0.35) 8 0.0098 (0.25) 0 0.0075 (0.19) 0.0196 (0.50) 0.0099 (0.25) 45 0.0500 (1.27) 0.0160 (0.41) REV. 0 –11– PRINTED IN U.S.A. C3577–8–4/99