AD8332-EVAL Analog Devices Inc, AD8332-EVAL Datasheet
AD8332-EVAL
Specifications of AD8332-EVAL
Related parts for AD8332-EVAL
AD8332-EVAL Summary of contents
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... ADC. An external resistor adjusts the clamping level. The operating temperature range is −40°C to +85°C. The AD8331 is available in a 20-lead QSOP package, the AD8332 is available in 28-lead TSSOP and 32-lead LFCSP packages, and the AD8334 is available in a 64-lead LFCSP package. ...
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... AD8331 Bill of Materials ........................................................... 43 AD8332 Evaluation Board ............................................................ 44 General Description................................................................... 44 User-Supplied Optional Components ..................................... 44 Measurement Setup.................................................................... 44 Board Layout............................................................................... 44 Evaluation Board Schematics ................................................... 45 AD8332 Evaluation Board PCB Layers ................................... 47 AD8332 Bill of Materials ........................................................... 48 AD8334 Evaluation Board ............................................................ 49 General Description................................................................... 49 Configuring the Input Impedance ........................................... 50 Measurement Setup.................................................................... 50 Board Layout............................................................................... 50 Evaluation Board Schematics ................................................... 51 AD8334 Evaluation Board PCB Layers ...
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... Changes to User-Supplied Optional Components Section and Measurement Setup Section...............................................39 Changes to Figure 95 ..................................................................39 Changes to Figure 97 ..................................................................41 Added Figure 98..........................................................................42 Incorporated AD8332-EVALZ Data Sheet, Rev. D.....................44 Incorporated AD8334-EVAL Data Sheet, Rev. 0 ........................49 Updated Outline Dimensions........................................................55 Changes to Ordering Guide...........................................................57 4/06—Rev Rev. E Added AD8334 ................................................................... Universal Changes to Figure 1 and Figure 2 ...
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... Large Signal Bandwidth AD8331 AD8332, AD8334 Slew Rate AD8331 AD8332, AD8334 Input Voltage Noise Noise Figure Active Termination Match Unterminated Output-Referred Noise AD8331 AD8332, AD8334 Output Impedance, Postamplifier = 50 Ω 280 Ω pF MHz Conditions Single-ended input to differential output Input to output (single-ended) AC-coupled R = 280 Ω ...
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... HD2 HD3 Input 1 dB Compression Point Two-Tone Intermodulation Distortion (IMD3) AD8331 AD8332, AD8334 Output Third-Order Intercept AD8331 AD8332, AD8334 Channel-to-Channel Crosstalk (AD8332, AD8334) Overload Recovery Group Delay Variation ACCURACY 2 Absolute Gain Error Gain Law Conformance 3 Channel-to-Channel Gain Matching GAIN CONTROL INTERFACE (Pin GAIN) ...
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... Power-Down Current AD8331 AD8332 AD8334 LNA Current AD8331 (ENBL) AD8332, AD8334 (ENBL) VGA Current AD8331 (ENBV) AD8332, AD8334 (ENBV) PSRR 1 All dBm values are referred to 50 Ω. 2 The absolute gain refers to the theoretical gain expression in Equation 1. 3 Best-fit to linear-in-dB curve. 4 The current is limited to ±1 mA typical. ...
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... Voltage Supply Voltage (VPSn, VPSV, VPSL, VPOS) Input Voltage (INHx) ENB, ENBL, ENBV, HILO Voltage GAIN Voltage Power Dissipation 1 AR Package (AD8332) CP-32 Package (AD8332 Package (AD8331) CP-64 Package (AD8334) Temperature Operating Temperature Range Storage Temperature Range Lead Temperature (Soldering 60 sec) θ ...
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... AD8331/AD8332/AD8334 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS Table 3. 20-Lead QSOP Pin Function Description (AD8331) Pin No. Mnemonic 1 LMD 2 INH 3 VPSL 4 LON 5 LOP 6 COML 7 VIP 8 VIN 9 MODE 10 GAIN 11 VCM 12 RCLMP 13 HILO 14 VPOS 15 VOH 16 VOL 17 COMM 18 ENBV 19 ENBL 20 COMM LMD COMM 1 20 PIN 1 INH INDICATOR ...
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... RCLMP 11 18 VOH2 12 17 VOL2 13 16 COMM 14 15 Figure 4. 28-Lead TSSOP Pin Configuration (AD8332) Table 4. 28-Lead TSSOP Pin Function Description (AD8332) Pin No. Mnemonic Description 1 LMD2 VCM Bias for CH2 LNA 2 INH2 CH2 LNA Input 3 VPS2 CH2 Supply LNA LON2 CH2 LNA Inverting Output ...
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... AD8331/AD8332/AD8334 COM2X COM3X CONNECT Table 6. 64-Lead LFCSP Pin Function Description (AD8334) Pin No. Mnemonic 1 INH2 2 LMD2 3 COM2X 4 LON2 5 LOP2 6 VIP2 7 VIN2 8 VPS2 9 VPS3 10 VIN3 11 VIP3 12 LOP3 13 LON3 14 COM3X 15 LMD3 16 INH3 17 COM3 18 COM4 19 INH4 20 LMD4 21 COM4X 22 LON4 23 LOP4 24 VIP4 25 VIN4 26 VPS4 27 GAIN34 28 CLMP34 ...
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... CH1 LNA Supply 5 V CH1 VGA Negative Input CH1 VGA Positive Input CH1 LNA Positive Output CH1 LNA Feedback Output (for CH1 LNA Ground Shield VCM Bias for CH1 LNA CH1 LNA Input CH1 LNA Ground CH2 LNA Ground Rev Page AD8331/AD8332/AD8334 ...
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... AD8331/AD8332/AD8334 TYPICAL PERFORMANCE CHARACTERISTICS T = 25° 500 Ω −4 +43.5 dB gain (HILO = LO), and differential output voltage, unless otherwise specified HILO = HILO = LO 0 ASCENDING GAIN MODE DESCENDING GAIN MODE (WHERE AVAILABLE) –10 0 0.2 0.4 0.6 V (V) GAIN Figure 7. Gain vs. V and MODE (MODE Available on AC Package) GAIN 2 ...
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... Figure 17. Group Delay vs. Frequency for Two Values of AC Coupling 100M 500M Figure 18. Representative Differential Output Offset Voltage vs Ω S Rev Page AD8331/AD8332/AD8334 p-p OUT – 1.0V GAIN AD8332 V = 0.7V –40 GAIN AD8334 V = 0.4V GAIN –60 –80 100k 1M 10M FREQUENCY (Hz) Figure 16. Channel-to-Channel Crosstalk vs. ...
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... AD8331/AD8332/AD8334 35 SAMPLE SIZE = 100 0.2V < V < 0.7V GAIN 49.6 49.7 49.8 49.9 50.0 50.1 GAIN SCALING FACTOR Figure 19. Gain Scaling Factor Histogram 100 SINGLE ENDED, PIN VOH OR PIN VOL ∞ 0.1 100k 1M FREQUENCY (Hz) Figure 20. Output Impedance vs. Frequency 10k 1k 100 R = ∞ 0pF R = 549Ω ...
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... Figure 28. Short-Circuit, Input-Referred Noise vs. Temperature GAIN 5MHz 0.1 100M 1 7 INCLUDES NOISE OF VGA SIMULATED RESULTS 0 0.8 1.0 50 Figure 30. Noise Figure vs. R GAIN Rev Page AD8331/AD8332/AD8334 ∞ 1V 10MHz GAIN –30 – TEMPERATURE (°C) ∞ GAIN R THERMAL NOISE S ALONE 10 100 SOURCE RESISTANCE (Ω ...
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... AD8331/AD8332/AD8334 35 PREAMP LIMITED HILO = LO 50Ω IN ∞ HILO = LO HILO = HI 50Ω IN ∞ HILO = HI 0.1 0.2 0.3 0.4 0.5 0.6 V (V) GAIN Figure 31. Noise Figure vs 10MHz 50Ω GAIN (dB) Figure 32. Noise Figure vs. Gain 30dB p-p OUT –10 –20 –30 –40 HILO = LO, HD3 –50 – ...
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... Figure 41. Output Third-Order Intercept vs. V 2mV 100 50mV 0.8 0.9 1.0 Figure 42. Small Signal Pulse Response dB, Top: Input, Bottom: Output Voltage, HILO = Rev Page AD8331/AD8332/AD8334 p-p COMPOSITE ( + ) OUT 1 2 HILO = LO HILO = HI 10M FREQUENCY (Hz) Figure 40. IMD3 vs. Frequency 1MHz HILO = LO 10MHz HILO = LO ...
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... AD8331/AD8332/AD8334 20mV 100 500mV Figure 43. Large Signal Pulse Response dB, HILO = HI or LO, Top: Input, Bottom: Output Voltage 30dB 1 INPUT 0 –1 INPUT IS NOT TO SCALE –2 –50 –40 –30 –20 – TIME (ns) Figure 44. Large Signal Pulse Response for Various Capacitive Loads pF, 10 pF 500mV 200mV Figure 45 ...
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... Figure 52. Enable Response, Large Signal, Top Bottom 150 mV p-p ENB OUT INH 0 VPS1, V GAIN VPSV 0.5V GAIN VPS1, V GAIN 100k 1M 10M FREQUENCY (Hz) Figure 53. PSRR vs. Frequency (No Bypass Capacitor 0.5V GAIN AD8334 AD8332 AD8331 –40 – TEMPERATURE (°C) Figure 54. Quiescent Supply Current vs. Temperature = 0. 100M 80 100 ...
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... AD8331/AD8332/AD8334 TEST CIRCUITS MEASUREMENT CONSIDERATIONS Figure 55 through Figure 68 show typical measurement configurations and proper interface values for measurements with 50 Ω conditions. Short-circuit input noise measurements are made as shown in Figure 62. The input-referred noise level is determined by Figure 56. Test Circuit—Frequency Response for Various Matched Source Impedances Figure 57. Test Circuit— ...
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... Figure 60. Test Circuit—Frequency Response for Unterminated LNA, Single-Ended 18nF 270Ω FB* 120nH 0.1µF INH DUT 22pF 0.1µF LMD *FERRITE BEAD Figure 61. Test Circuit—Short-Circuit, Input-Referred Noise Rev Page AD8331/AD8332/AD8334 50Ω IN 0.1µF OR 0.1µF 1µF 237Ω 28Ω VGA 1:1 237Ω LMD 0.1µF 0.1µ ...
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... LMD 28Ω 0.1µF 0.1µF Figure 63. Test Circuit—Harmonic Distortion vs. Load Resistance 18nF 270Ω 0.1µF AD8332 237Ω 0.1µF –6dB DUT 22pF 237Ω LMD 0.1µF 0.1µF Figure 64. Test Circuit—Harmonic Distortion vs. Load Capacitance 18nF 274Ω ...
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... FB* 0.1µF 120nH INH DUT 22pF 50Ω LMD RF 0.1µF SIGNAL 0.1µF GENERATOR *FERRITE BEAD Figure 68. Test Circuit—PSRR vs. Frequency Rev Page AD8331/AD8332/AD8334 OSCILLOSCOPE 50Ω IN 28Ω 1:1 28Ω OSCILLOSCOPE CH1 CH2 DIFF PROBE 9.5dB 50Ω PULSE GENERATOR NETWORK ANALYZER 50Ω ...
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... AD8331/AD8332/AD8334 THEORY OF OPERATION OVERVIEW The AD8331/AD8332/AD8334 operate in the same way. Figure 69, Figure 70, and Figure 71 are functional block diagrams of the three devices LON LOP VIP VIN VCM V MID – + ATTENUATOR LNA INH –48dB – + LMD VCM VGA BIAS AND BIAS INTERPOLATOR AD8331 ...
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... Output voltage limiting can be programmed by the user. LOW NOISE AMPLIFIER (LNA) Good noise performance in the AD8331/AD8332/AD8334 relies on a proprietary ultralow noise preamplifier at the beginning of the signal chain, which minimizes the noise contribution in the following VGA. Active impedance control optimizes noise per- formance for applications that benefit from input matching ...
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... AD8331/AD8332/AD8334 Active Impedance Matching The LNA supports active impedance matching through an external shunt feedback resistor from Pin LON to Pin INH. The input resistance given in Equation 5, where A is the single- IN ended gain of 4.5, and 6 kΩ is the unterminated input impedance. × 6 kΩ ...
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... 1.0 V. The gain control scaling is trimmed to a slope of 50 dB/V (20 mV/dB). Values of V range saturate to minimum or maximum gain values. Both channels of the AD8332 are controlled from a single gain interface to preserve matching. Gain can be calculated using Equation 1 and Equation 2. POSTAMP ...
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... AD8331/AD8332/AD8334 The gain slope can be inverted, as shown in Figure 73 (except for the AD8332 AR models). The gain drops with a slope of −50 dB/V across the gain control range from maximum to minimum gain. This slope is useful in applications such as automatic gain control, where the control voltage is propor- tional to the measured output signal amplitude ...
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... R to ground. Table 8 shows a list of recommended CLMP resistor values. AD8331/AD8332/AD8334 Output clamping can be used for ADC input overload protection, if needed, or postamp overload protection when operating from a lower common-mode level, such as 1.5 V. The user should be aware that distortion products increase as output levels approach the clamping levels, and the user should adjust the clamp resistor accordingly ...
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... None None Figure 81. Basic Connections for a Typical Channel (AD8332 Shown) for 50 Ω ≤ R ≤ Both LNA outputs are available for driving external circuits. Pin LOP should be used in those instances when a single-ended LNA output is required. The user should be aware of stray capacitance loading of the LNA outputs, in particular LON. The LNA can drive 100 Ω ...
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... Gain Input The GAIN pin is common to both channels of the AD8332. The input impedance is nominally 10 MΩ, and a bypass capacitor from 100 recommended. Parallel connected devices can be driven by a common voltage source or DAC. Decoupling should take into account any bandwidth considerations of the drive waveform, using the total distributed capacitance ...
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... AD8331/AD8332/AD8334 or with gains less than 40 dB. The exact values of these components can be selected empirically. An antialiasing noise filter is typically used with an ADC. Filter requirements are application dependent. When the ADC resides on a separate board, the majority of filter components should be placed nearby to suppress noise picked up between boards and to mitigate charge kickback from the ADC inputs ...
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... AD8331 as an example. ADG736 Analog Rev Page AD8331/AD8332/AD8334 ADG736 1.13kΩ SELECT R IZ 280Ω 18nF 5Ω 200Ω INH LNA LMD 50Ω 0.1µF AD8332 Figure 89. Accommodating Multiple Sources COMM LMD AD8331 INH ENBL + VPSL ENBV ...
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... AD8331/AD8332/AD8334 ULTRASOUND TGC APPLICATION The AD8332 ideally meets the requirements of medical and industrial ultrasound applications. The TGC amplifier is a key subsystem in such applications because it provides the means for echolocation of reflected ultrasound energy. Figure 91 through Figure 93 are schematics of a dual, fully differential system using the AD8332 and the high speed ADC with conversion speeds as high as 65 MSPS ...
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... C67 C66 JP12 C55 L20 L18 SAT SAT 0.1µF SAT SAT V –B IN JP7 DC2L Figure 91. Schematic, TGC, VGA Section Using an AD8332 and AD9238 TP5 AD8332ARU C50 1 28 0.1µF LMD1 LMD2 C49 C70 0.1µF 0.1µF L12 120nH FB 27 ...
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... JP1 D3_B D4_B U5 74VHC04 13 12 D5_B 11 10 +3.3VADDIG U5 C26 74VHC04 0.1µF Figure 92. Converter Schematic, TGC Using an AD8332 and AD9238 Rev Page C22 C21 0.1µF 1nF ADCLK R11 100Ω R10 1 64 JP2 AGND AVDD 0Ω SHARED REF 2 63 VIN+_A ...
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... GND D4_B D3_B D2_B × D1_B D0_B DNC DNC DATACLK Figure 93. Interface Schematic, TGC Using an AD8332 and AD9238 +3.3VDVDD + C3 C28 0.1µF 10µF 6. +3.3VDVDD C10 C76 0.1µF 0.1µF 10µF 6. +3.3VDVDD + + C27 C7 C9 10µF 0.1µF 0.1µF 6. C75 4 C4 ...
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... AD8331/AD8332/AD8334 COM3 COM4 INH4 LMD4 COM4X LON4 LOP4 VIP4 VIN4 VPS4 GAIN34 CLMP34 HILO VCM4 VCM3 NC 03199-094 Figure 94. Compact Signal Path and Board Layout for the AD8334 Rev Page COM2 COM1 INH1 LMD1 COM1X LON1 LOP1 VIP1 VIN1 VPS1 GAIN12 CLMP12 ...
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... The evaluation board circuitry uses four conductor layers. The two inner layers are grounded, and all interconnecting circuitry is located on the outer layers. Figure 99 to Figure 102 illustrate the copper patterns. Table 11 provides a parts list. Rev Page AD8331/AD8332/AD8334 Figure 95. AD8331-EVALZ Top View ; top, gain decreases GAIN GAIN ...
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... AD8331/AD8332/AD8334 AD8331 EVALUATION BOARD SCHEMATICS GND1 GND2 GND INH L1 120nH PROBE + LON R4 R8 LOP MODE GAIN NOTES 1. COMPONENTS IN GREY ARE OPTIONAL AND USER SUPPLIED. +5V CLMD +C3 0.1µF 10µ 10V LMD COMM C INH 0.1µ INH ENBL CSH CFB 22pF DUT 0.018µF ...
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... ENABLE VGA LNA SELECT UP OR HI/LO GAIN DOWN GAIN SELECT GAIN SLOPE Figure 97. AD8331—Typical Board Test Connections Rev Page AD8331/AD8332/AD8334 1103 TEKPROBE POWER SUPPLY E3631 A POWER SUPPLY +5 V GND DIFFERENTIAL PROBE TO VO PINS INSERT JUMPERS W5 AND W6 TO USE OUTPUT TRANSFORMER ...
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... AD8331/AD8332/AD8334 AD8331 EVALUATION BOARD PCB LAYERS Figure 98. AD8331-EVALZ Assembly Figure 99. Primary Side Copper Figure 100. Secondary Side Copper Figure 101. Internal Layer Ground Figure 102. Power Plane Figure 103. Top Silkscreen Rev Page ...
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... Integrated circuit, variable gain amplifier 2-pin header/connector 3-pin header/connector SMA, right angle PC mount/connector 0.125” diameter, red loop test point 0.125” diameter, black loop test point 0.125” diameter, purple loop test point Rev Page AD8331/AD8332/AD8334 Manufacturer Manufacturer Part Number Murata BLM18BA750SN1D Panasonic ERJ-3EKF2740V ...
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... AD8331/AD8332/AD8334 AD8332 EVALUATION BOARD GENERAL DESCRIPTION The AD8332-EVALZ is a platform for the testing and evaluation of the AD8332 variable gain amplifier (VGA). The board is shipped assembled and tested, and users need only connect the signal and VGAIN sources to a single 5 V power supply. Figure 104 is a photograph of the component side of the board, and Figure 105 shows the schematic ...
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... VOH2 VOH1 R7 100Ω VOL2 VOL1 R8 100Ω 120nH FB COMM VPSV C22 0.1µF Figure 105. Schematic of the AD8332 Evaluation Board Rev Page AD8331/AD8332/AD8334 C1 0.1µF C3 CSH1 L2 0.1µF LNA1 22pF 120nH FB CFB1 CAL1 18nF +5VLNA C7 0.1µF S2 LON1 C23 ...
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... AD8331/AD8332/AD8334 SUPPLY FOR VGAIN NETWORK ANALYZER Figure 106. AD8332—Typical Board Test Connections Rev Page 1103 TEKPROBE POWER SUPPLY DIFFERENTIAL PROBE ...
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... AD8332 EVALUATION BOARD PCB LAYERS Figure 107. AD8332-EVALZ Assembly Figure 108. Primary Side Copper Figure 109. Secondary Side Copper AD8331/AD8332/AD8334 Figure 110. Ground Plane Figure 111. Power Plane Figure 112. Component Side Silkscreen Rev Page ...
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... AD8331/AD8332/AD8334 AD8332 BILL OF MATERIALS Table 13. Qty Reference Designator 8 L1, L2, L3, L4, L5, L6, L7 RFB1, RFB2 4 R13, R14, R15, R16 4 R5, R6, R7 CFB1, CFB2 18 C1, C2, C3, C4, C6, C7, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C22 CSH1, CSH2 1 C25 2 T1, T2 ...
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... AD8334 variable gain amplifier (VGA). The board is shipped assembled and tested, and users need only connect the signal and VGAIN sources and a single 5 V power supply. Figure 113 is a photograph of the board. The AD8334-EVALZ is lead free and RoHS compliant. Figure 113. AD8334-EVALZ Top View Rev Page AD8331/AD8332/AD8334 ...
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... AD8331/AD8332/AD8334 CONFIGURING THE INPUT IMPEDANCE The board is built and tested using the components shown in black in Figure 114. Provisions are made for optional components (shown in gray) that can be installed at user discretion. As shipped, the input impedances of the low noise amplifiers (LNAs) are configured for 50 Ω to match the output impedances of most signal generators and network analyzers. Input impedances kΩ ...
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... COM3 COM4 INH4 LMD4 COM4X LON4 LOP4 VIP4 VIN4 VPS4 GAIN34 CLMP34 HILO VCM4 VCM3 3 NC Figure 115.Schematic of the AD8334 Evaluation Board Rev Page AD8331/AD8332/AD8334 COM2 COM1 INH1 LMD1 COM1X LON1 LOP1 VIP1 VIN1 VPS1 GAIN12 CLMP12 EN12 EN34 VCM1 VCM2 ...
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... AD8331/AD8332/AD8334 PRECISION VOLTAGE REFERENCE (FOR VGAIN) NETWORK ANALYZER SIGNAL INPUT Figure 116. AD8334—Typical Board Test Connections (One Channel Shown) PROBE POWER SUPPLY GAIN CONTROL VOLTAGE GND Rev Page DIFFERENTIAL PROBE +5V POWER SUPPLY GND ...
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... AD8334 EVALUATION BOARD PCB LAYERS Figure 117. Component Side Copper Figure 118. Wiring Side Copper AD8331/AD8332/AD8334 Figure 119. Inner Layer 1 Figure 120. Inner Layer 2 Rev Page ...
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... AD8331/AD8332/AD8334 AD8334 BILL OF MATERIALS Table 15. Qty Reference Designator GND1 to GND6 2 GAIN12, GAIN34 36 C1, C2, C3, C4, C5, C7, C9, C11, C13, C16, C17, C21, C22, C26, C27, C31, C32, C34, C36, C39, C41, C44, C46, C49, C51, C53, C55, C57, C59, C62, C64, C67, C69, C71, ...
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... SEATING PLANE 0.012 (0.30) 0.008 (0.20) COMPLIANT TO JEDEC STANDARDS MO-137-AD Figure 123. 20-Lead Shrink Small Outline Package (QSOP) (RQ-20) Dimensions shown in Inches and (millimeters Rev Page AD8331/AD8332/AD8334 6.40 BSC 8 ° 0.75 0 ° 0.60 0.45 0.010 (0.25) 0.020 (0.51) 0.006 (0.15) ...
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... AD8331/AD8332/AD8334 5.00 BSC SQ PIN 1 INDICATOR TOP VIEW 0.80 MAX 12° MAX 0.65 TYP 1.00 0.85 0.30 0.80 0.23 SEATING 0.18 PLANE 9.00 BSC SQ PIN 1 INDICATOR TOP VIEW 0.80 MAX 1.00 12° MAX 0.65 TYP 0.85 0.80 SEATING 0.50 BSC PLANE 0.60 MAX ...
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... AD8332ARU-REEL7 –40°C to +85°C 1 AD8332ARUZ –40°C to +85°C 1 AD8332ARUZ-R7 –40°C to +85°C 1 AD8332ARUZ-RL –40°C to +85°C 1 AD8332-EVALZ 1 AD8334ACPZ –40°C to +85°C 1 AD8334ACPZ-REEL –40°C to +85°C 1 AD8334ACPZ-REEL7 –40°C to +85°C 1 AD8334-EVALZ RoHS Compliant Part ...
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... AD8331/AD8332/AD8334 NOTES Rev Page ...
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... NOTES AD8331/AD8332/AD8334 Rev Page ...
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... AD8331/AD8332/AD8334 NOTES ©2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D03199-0-4/08(F) Rev Page ...