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eval:hmc8362_user_guide [10 Aug 2020 19:31] – [Evaluation Kit Contents] Kieran Barretteval:hmc8362_user_guide [10 Aug 2020 19:39] (current) – Indenting headings. Kieran Barrett
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 EV1HMC8364LP6G evaluation board EV1HMC8364LP6G evaluation board
  
-====Equipment Needed====+=====Equipment Needed=====
   * Power supply (6 V)   * Power supply (6 V)
   * Power supply (low noise, variable 0 V to 13.5 V)   * Power supply (low noise, variable 0 V to 13.5 V)
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   * Signal source analyzer    * Signal source analyzer 
  
-====Online Resources====+=====Online Resources=====
   * [[adi>HMC8362]] data sheet   * [[adi>HMC8362]] data sheet
   * [[adi>HMC8364]] data sheet   * [[adi>HMC8364]] data sheet
   * Linduino DC2026C Demo Manual    * Linduino DC2026C Demo Manual 
  
-====General Description====+=====General Description=====
 The EV1HMC8362LP6G and EV1HMC8364LP6G allow the evaluation of the performance of the [[adi>HMC8362]] and [[adi>HMC8364]] low noise quadband voltage controlled oscillators (VCOs). A photograph of the evaluation board is shown in Figure 1. The evaluation board contains the [[adi>HMC8362]] or [[adi>HMC8364]] VCO, an [[adi>LT3042]] ultralow noise voltage regulator, a jumper, an [[adi>ADG1604]] 4:1 multiplexer, sub¬miniature Version A (SMA) and 2.92 mm K connectors.  The EV1HMC8362LP6G and EV1HMC8364LP6G allow the evaluation of the performance of the [[adi>HMC8362]] and [[adi>HMC8364]] low noise quadband voltage controlled oscillators (VCOs). A photograph of the evaluation board is shown in Figure 1. The evaluation board contains the [[adi>HMC8362]] or [[adi>HMC8364]] VCO, an [[adi>LT3042]] ultralow noise voltage regulator, a jumper, an [[adi>ADG1604]] 4:1 multiplexer, sub¬miniature Version A (SMA) and 2.92 mm K connectors. 
 Consult the [[adi>HMC8362]] and [[adi>HMC8364]] data sheets in conjunction with this user guide when working with the evaluation boards. Consult the [[adi>HMC8362]] and [[adi>HMC8364]] data sheets in conjunction with this user guide when working with the evaluation boards.
  
-====EV1HMC8362LP6G/EV1HMC8364LP6G Evaluation Board Photograph====+=====EV1HMC8362LP6G/EV1HMC8364LP6G Evaluation Board Photograph=====
 {{ :resources:eval:figure_1_evb_pic.png?600 |}} {{ :resources:eval:figure_1_evb_pic.png?600 |}}
 Figure 1. Evaluation Board Figure 1. Evaluation Board
  
-====Getting Started==== +=====Getting Started===== 
-===Evaluation Board Setup Procedure===+====Evaluation Board Setup Procedure====
 To configure the EV1HMC8362LP6G or EV1HMC8364LP6G for the first time, perform the following steps.  To configure the EV1HMC8362LP6G or EV1HMC8364LP6G for the first time, perform the following steps. 
   - Verify that the analog power supply that is used to power the evaluation board configured to allow an output of 6.0 V and 200 mA of compliance current.    - Verify that the analog power supply that is used to power the evaluation board configured to allow an output of 6.0 V and 200 mA of compliance current. 
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 {{ :resources:eval:figure_2_p1_connector.png?200 |}} {{ :resources:eval:figure_2_p1_connector.png?200 |}}
 Figure 2. Connector P1 Jumper Configuration: Alternative 5 V Supply,   Multiplexer, One VCO, and Buffer Amplifier Enabled Figure 2. Connector P1 Jumper Configuration: Alternative 5 V Supply,   Multiplexer, One VCO, and Buffer Amplifier Enabled
-====Evaluation Board Hardware====+=====Evaluation Board Hardware=====
 The EV1HMC8362LP6G and EV1HMC8364LP6G are identical except for Resistor R6, which sets the current limit function of the [[adi>LT3042]], and C31 which is the AC coupling capacitor on the RF output port. The EV1HMC8362LP6G and EV1HMC8364LP6G are identical except for Resistor R6, which sets the current limit function of the [[adi>LT3042]], and C31 which is the AC coupling capacitor on the RF output port.
 The evaluation board schematics, assembly, silkscreen, and bill of materials are available in the Evaluation Board Schematics and Artwork section and Ordering Information section. The gerber fabrication files are available on the [[adi>HMC8362]]and [[adi>HMC8364]] product pages on analog.com.  The evaluation board schematics, assembly, silkscreen, and bill of materials are available in the Evaluation Board Schematics and Artwork section and Ordering Information section. The gerber fabrication files are available on the [[adi>HMC8362]]and [[adi>HMC8364]] product pages on analog.com. 
  
-===POWER SUPPLIES===+====POWER SUPPLIES====
 The EV1HMC8362LP6G and EV1HMC8364LP6G boards are powered by a 6 V dc (150 mA) power supply connected to the SMA connector J1 labeled 6.0 V. This supply path includes a single ultralow noise, (LDO) regulator, the [[adi>LT3042]]. As an extra safeguard, the [[adi>LT3042]] is configured to use the current-limit feature. A resistor (R6) sets the current limit on ILIM (Pin 5) of the [[adi>LT3042]] to 114 mA (R6 = 1100 Ω) on EV1HMC8362LP6G and 156 mA (R6 = 806 Ω) for the EV1HMC8364LP6G. The EV1HMC8362LP6G and EV1HMC8364LP6G boards are powered by a 6 V dc (150 mA) power supply connected to the SMA connector J1 labeled 6.0 V. This supply path includes a single ultralow noise, (LDO) regulator, the [[adi>LT3042]]. As an extra safeguard, the [[adi>LT3042]] is configured to use the current-limit feature. A resistor (R6) sets the current limit on ILIM (Pin 5) of the [[adi>LT3042]] to 114 mA (R6 = 1100 Ω) on EV1HMC8362LP6G and 156 mA (R6 = 806 Ω) for the EV1HMC8364LP6G.
 Users that intend to use an external power supply such as the Linduino® or Arduino® Uno microcontroller to directly program the logic from the P3 header must remove the five 10 kΩ resistors (R18, R26, R35, R36, and R37) or damage may occur.  Users that intend to use an external power supply such as the Linduino® or Arduino® Uno microcontroller to directly program the logic from the P3 header must remove the five 10 kΩ resistors (R18, R26, R35, R36, and R37) or damage may occur. 
 A second low noise power supply cable providing up to 13.5 V is required to tune the VCOs. Use of a noisy power supply on the tuning port results in narrow-band FM modulation and sidebands.  A second low noise power supply cable providing up to 13.5 V is required to tune the VCOs. Use of a noisy power supply on the tuning port results in narrow-band FM modulation and sidebands. 
  
-===VOLTAGE CONTROLLED OSCILLATOR (VCO)===+====VOLTAGE CONTROLLED OSCILLATOR (VCO)====
 The [[adi>HMC8362]] and [[adi>HMC8364]] models include a total of four VCO cores that generate a range of fundamental frequencies. The frequency range of each core overlaps the adjacent core to allow continuous frequency coverage including any supply and temperature variation.  The [[adi>HMC8362]] and [[adi>HMC8364]] models include a total of four VCO cores that generate a range of fundamental frequencies. The frequency range of each core overlaps the adjacent core to allow continuous frequency coverage including any supply and temperature variation. 
 By generating fundamental frequencies, the need for additional filtering can be reduced or eliminated because there are no subharmonics. The tuning sensitivity across the band is similar for each core, which simplifies the loop filter design. Any frequency planning or dynamic loop bandwidth adjustment required to manage spurs or settling time is made easier by the consistent tuning sensitivity from core to core. The integrated common tuning (VTUNE on J2) and RF output ports (RF1) simplify layout. Each band has an allowable tune voltage of 1.0 V dc to 13.5 V dc.  By generating fundamental frequencies, the need for additional filtering can be reduced or eliminated because there are no subharmonics. The tuning sensitivity across the band is similar for each core, which simplifies the loop filter design. Any frequency planning or dynamic loop bandwidth adjustment required to manage spurs or settling time is made easier by the consistent tuning sensitivity from core to core. The integrated common tuning (VTUNE on J2) and RF output ports (RF1) simplify layout. Each band has an allowable tune voltage of 1.0 V dc to 13.5 V dc. 
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 The EV1HMC8362LP6G and EV1HMC8364LP6G boards include additional filtering to prevent supply voltage overshoot and undershoot, which can damage the device if overshoot exceeds 5.5 V. This filtering provides 5 V of biasing that settles within about 1 µs.  The EV1HMC8362LP6G and EV1HMC8364LP6G boards include additional filtering to prevent supply voltage overshoot and undershoot, which can damage the device if overshoot exceeds 5.5 V. This filtering provides 5 V of biasing that settles within about 1 µs. 
  
-===BUFFER AMPLIFIER===+====BUFFER AMPLIFIER====
 The buffer amplifier used in the [[adi>HMC8362]] and [[adi>HMC8364]]is a broadband cascode design that draws approximately 12 mA and is shared by all four VCO cores. Pin 8 (VCB) of the [[adi>HMC8362]] and [[adi>HMC8364]] provides the bias voltage for the upper half of the cascode amplifier. The VCO outputs provide the biasing for the lower half of the cascode amplifier stage. When one of the four VCOs is enabled, the cascode amplifier becomes fully enabled and provides an output signal at Pin 5. The buffer amplifier was designed to handle the power supplied by only one VCO at a time. To prevent long-term damage that can occur if more than one VCO is powered up simultaneously, the EV1HMC8362LP6G and EV1HMC8364LP6G boards incorporate the [[adi>ADG1604]] 4:1 multiplexer. As configured on the EV1HMC8362LP6G and EV1HMC8364LP6G, the [[adi>ADG1604]] multiplexer incorporates exclusive OR (XOR) logic and the ability to break contact with one VCO for a minimum of 30 ns before closing the contacts on the next switch to power up a different VCO core. To minimize the switching time of the [[adi>ADG1604]], 5 V logic is used but 3 V can also be used through an external power supply or microcontroller such as a Linduino or Arduino Uno.  The buffer amplifier used in the [[adi>HMC8362]] and [[adi>HMC8364]]is a broadband cascode design that draws approximately 12 mA and is shared by all four VCO cores. Pin 8 (VCB) of the [[adi>HMC8362]] and [[adi>HMC8364]] provides the bias voltage for the upper half of the cascode amplifier. The VCO outputs provide the biasing for the lower half of the cascode amplifier stage. When one of the four VCOs is enabled, the cascode amplifier becomes fully enabled and provides an output signal at Pin 5. The buffer amplifier was designed to handle the power supplied by only one VCO at a time. To prevent long-term damage that can occur if more than one VCO is powered up simultaneously, the EV1HMC8362LP6G and EV1HMC8364LP6G boards incorporate the [[adi>ADG1604]] 4:1 multiplexer. As configured on the EV1HMC8362LP6G and EV1HMC8364LP6G, the [[adi>ADG1604]] multiplexer incorporates exclusive OR (XOR) logic and the ability to break contact with one VCO for a minimum of 30 ns before closing the contacts on the next switch to power up a different VCO core. To minimize the switching time of the [[adi>ADG1604]], 5 V logic is used but 3 V can also be used through an external power supply or microcontroller such as a Linduino or Arduino Uno. 
 Refer to the [[adi>ADG1604]] data sheet for more information regarding the [[adi>ADG1604]] logic and use with other logic levels.   Refer to the [[adi>ADG1604]] data sheet for more information regarding the [[adi>ADG1604]] logic and use with other logic levels.  
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 For additional details on the buffer amplifier circuitry, consult the [[adi>HMC8362]] or [[adi>HMC8364]] data sheet.  For additional details on the buffer amplifier circuitry, consult the [[adi>HMC8362]] or [[adi>HMC8364]] data sheet. 
  
-===RF Output===+====RF Output====
 The EV1HMC8362LP6G and EV1HMC8364LP6G boards have a single RF output port (RF1). RF1 is supplied by a buffer amplifier that is common to all four VCO cores. The EV1HMC8362LP6G and EV1HMC8364LP6G boards have a single RF output port (RF1). RF1 is supplied by a buffer amplifier that is common to all four VCO cores.
 RF1 (J3) is a single-ended RF output that operates up to 26.6 GHz. The actual frequency range and power level at any given time depends on which model is being evaluated and the VCO core that is enabled. Consult the [[adi>HMC8362]] and [[adi>HMC8364]] data sheets for additional information relative to the specific model being evaluated for more information. RF1 (J3) is a single-ended RF output that operates up to 26.6 GHz. The actual frequency range and power level at any given time depends on which model is being evaluated and the VCO core that is enabled. Consult the [[adi>HMC8362]] and [[adi>HMC8364]] data sheets for additional information relative to the specific model being evaluated for more information.
  
-===Loop Filter===+====Loop Filter====
 Although the EV1HMC8362LP6G and EV1HMC8364LP6G boards do not incorporate the entire loop filter, they do provide the means to filter noise that may appear on the tuning port when evaluating only the VCOs.  Although the EV1HMC8362LP6G and EV1HMC8364LP6G boards do not incorporate the entire loop filter, they do provide the means to filter noise that may appear on the tuning port when evaluating only the VCOs. 
 By default, a 100 pF capacitor (C12) is placed near Pin 27 (VTUNE) of the [[adi>HMC8362]] and [[adi>HMC8364]] to filter high frequency noise that may couple onto the tune port path when evaluating the various VCOs.  By default, a 100 pF capacitor (C12) is placed near Pin 27 (VTUNE) of the [[adi>HMC8362]] and [[adi>HMC8364]] to filter high frequency noise that may couple onto the tune port path when evaluating the various VCOs. 
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 SMA Connector J2 provides means to connect the PLL CP output to the tuning port (VTUNE) when the EV1HMC8362LP6G and EV1HMC8364LP6G are used with an optional PLL evaluation board. J2 can also be used to manually tune the VCO within its band when evaluating the open-loop VCO performance.   SMA Connector J2 provides means to connect the PLL CP output to the tuning port (VTUNE) when the EV1HMC8362LP6G and EV1HMC8364LP6G are used with an optional PLL evaluation board. J2 can also be used to manually tune the VCO within its band when evaluating the open-loop VCO performance.  
  
-===Default Configuration===+====Default Configuration====
 All components necessary for local oscillator generation are inserted on the EV1HMC8362LP6G and EV1HMC8364LP6G boards. All components necessary for local oscillator generation are inserted on the EV1HMC8362LP6G and EV1HMC8364LP6G boards.
  
-====Evaluation Board Software==== +=====Evaluation Board Software===== 
-===Software===+====Software====
 Currently there is no software available for the EV1HMC8362LP6G and EV1HMC8364LP6G because they can be evaluated without the use of software. However, the EV1HMC8362LP6G and EV1HMC8364LP6G are configured in a manner that allows use of a Linduino, Arduino Uno, or similar microcontroller board, which may be beneficial for users needing to develop and test switching algorithms for their application.  Currently there is no software available for the EV1HMC8362LP6G and EV1HMC8364LP6G because they can be evaluated without the use of software. However, the EV1HMC8362LP6G and EV1HMC8364LP6G are configured in a manner that allows use of a Linduino, Arduino Uno, or similar microcontroller board, which may be beneficial for users needing to develop and test switching algorithms for their application. 
 To connect the Arduino Uno microcontroller to the EV1HMC8362LP6G or EV1HMC8364LP6G, flip the Arduino Uno board over so that the digital input/output pins (Pin 8 through Pin 14) line up with Pin 3 to Pin 15 of Connector P3, respectively. To connect the Arduino Uno microcontroller to the EV1HMC8362LP6G or EV1HMC8364LP6G, flip the Arduino Uno board over so that the digital input/output pins (Pin 8 through Pin 14) line up with Pin 3 to Pin 15 of Connector P3, respectively.
  
-====Evaluation and Test====+=====Evaluation and Test=====
 To configure the EV1HMC8362LP6G and EV1HMC8364LP6G for the first time, follow Step 1 through Step 6 outlined in the Evaluation Board Setup Procedure section.  To configure the EV1HMC8362LP6G and EV1HMC8364LP6G for the first time, follow Step 1 through Step 6 outlined in the Evaluation Board Setup Procedure section. 
 The frequency vs. tune voltage listed in the following steps are specific to the EV1HMC8362LP6G, but the same process is applicable to the EV1HMC8364LP6G. The frequency range and performance are different.  The frequency vs. tune voltage listed in the following steps are specific to the EV1HMC8362LP6G, but the same process is applicable to the EV1HMC8364LP6G. The frequency range and performance are different. 
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 Figure 5. EV1HMC8362LP6G Phase Noise at RF1, VCO Band 1, VTUNE = 8.45 V, 13.5 GHz Figure 5. EV1HMC8362LP6G Phase Noise at RF1, VCO Band 1, VTUNE = 8.45 V, 13.5 GHz
  
-====Schematics, Gerbers, BOM, Software====+=====Schematics, Gerbers, BOM, Software=====
 ====EV1HMC8362LP6G==== ====EV1HMC8362LP6G====
   * {{ :resources:eval:ev1hmc8362lp6g.pdf |Schematic}}   * {{ :resources:eval:ev1hmc8362lp6g.pdf |Schematic}}
eval/hmc8362_user_guide.1597080683.txt.gz · Last modified: 10 Aug 2020 19:31 by Kieran Barrett

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