# Title: Hz To V 2 Click Board™ ## Description: These features allow Hz to V 2 Click Board™ to be used in various frequency to voltage applications: in instrumentation, industrial, and automation markets. It is well suited for use in A/D conversion, long-term integration, frequency to voltage conversion, RPM measurement, capacitance measurement, and similar applications which can benefit from an accurate and reliable frequency to voltage conversion. Its function can be complemented by the Hz to V 2 Click Board™, which does the opposite type of conversion: DC voltage to frequency. This can be utilized to build an FM modulator/demodulator application, for example. How Does The Hz to V 2 Click Board™ Work? The main component of the Hz to V 2 Click Board™ is the VFC32KU, a voltage-to-frequency and frequency-to-voltage converter from Texas Instruments. It accepts a signal with the frequency within a range between 200Hz and 120kHz on the input and generates DC voltage with the level corresponding to the input frequency, ranging from 0V to 10V, with a highly linear response. The output DC voltage level is further scaled down by the voltage divider on the VFC32KU output, in order to achieve levels acceptable by the MCU. This makes the DC voltage output suitable for sampling, or further processing by the host MCU. The input signal within the specified frequency range can be applied to either the PWM pin of the mikroBUS™ labelled as FIN on this Click board™ or to the external signal input terminal labelled as FEXT. This signal is AC coupled by a 1nF capacitor, meaning that no DC component will be affecting the connected source. The signal input source can be selected by the onboard switch, labelled as INPUT SEL. A DC voltage output ranging up to 3.3V is available both on the AN pin of the mikroBUS™ labelled as the VO, and the output terminal - labelled as the VOUT on this Click board™. An onboard high-precision OFFSET potentiometer is used to fine-tune the output of the Click board™. It can be calibrated by using the offset potentiometer, by introducing a signal of a known frequency to either FEXT input terminal or the PWM input pin. An offset trimming procedure should be executed before the first use of the Click board™, since even slight variations in the components tolerances could affect the value at the output. It is recommended to correct the offset after longer time intervals, to compensate for the aging of the passive components on the Click board™. The VFC32KU IC requires a dual power supply with ±15V. Therefore, this Click board™ utilizes another IC in order to provide the required voltages. It uses the TPS65131, a positive and negative output DC/DC Converter IC, also from Texas Instruments. This DC/DC converter has already been used in Boost-INV 2 click, so it was tested "on the field" for this purpose. Providing well-stabilized output with the plenty of power headroom, it is a perfect solution for the HZ to V 2 click, also. To enable the conversion circuitry, the EN pin of the TPS65131 boost converter should be pulled to a HIGH logic level. This will activate the boost converter and provide the required power for the VFC32KU IC. This pin is routed to the mikroBUS™ CS pin and it is labelled as EN. SPECIFICATIONS Type Measurements Applications The Hz to V 2 Click Board™ can be used in instrumentation, industrial, and automation markets. It is well suited for use in A/D conversion, long-term integration, frequency to voltage conversion, RPM measurement, capacitance measurement, frequency demodulation, and similar applications On-board modules VFC32KU, a voltage-to-frequency and frequency-to-voltage converter from Texas Instruments; TPS65131, a positive and negative output DC/DC Converter, from Texas Instruments Key Features Hz to V click features very good linearity, covers a wide frequency range and it has good temperature stability. Onboard high-precision trimmer potentiometer for increased accuracy of the converted DC voltage output Interface GPIO Compatibility mikroBUS Click board size L (57.15 x 25.4 mm) Input Voltage 3.3V ONBOARD JUMPERS AND SETTINGS Label Name Default Description LD1 PWR - Power LED indicator SW1 INPUT SEL Left Input signal source selection: left position mikroBUS™ FIN pin, right position FEXT input terminal TB1 VOUT - Converted DC voltage output TB2 FEXT - External signal input PINOUT DIAGRAM This table shows how the pinout of the Hz to V 2 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes Voltage OUT VO 1 AN PWM 16 FIN Signal IN NC 2 RST INT 15 NC Boost IC Enable EN 3 CS RX 14 NC NC 4 SCK TX 13 NC NC 5 MISO SCL 12 NC NC 6 MOSI SDA 11 NC Power Supply 3.3V 7 3.3V 5V 10 NC Ground GND 8 GND GND 9 GND Ground ## Product type: Click Board ## Vendor: Mikroelektronika d.o.o. ## Tags: Click Board, Measurement, MikroE, Mixed Signal ## Price range: 41.3 - 41.3 GBP ## Link: https://thedebugstore.com/products/mikroe-3126-hz-to-v-2-click-board-uk ## Compare-at price range: 59.0 - 59.0 GBP ## Options - Title: Default Title ## Collections - [New Products](https://thedebugstore.com/a/llms/collections/new-products-debug-store) - [Mikroelektronika d.o.o. 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These features allow Hz to V 2 Click Board™ to be used in various frequency to voltage applications: in instrumentation, industrial, and automation markets. It is well suited for use in A/D conversion, long-term integration, frequency to voltage conversion, RPM measurement, capacitance measurement, and similar applications which can benefit from an accurate and reliable frequency to voltage conversion. Its function can be complemented by the Hz to V 2 Click Board™, which does the opposite type of conversion: DC voltage to frequency. This can be utilized to build an FM modulator/demodulator application, for example.

How Does The Hz to V 2 Click Board™ Work?

The main component of the Hz to V 2 Click Board™ is the VFC32KU, a voltage-to-frequency and frequency-to-voltage converter from Texas Instruments. It accepts a signal with the frequency within a range between 200Hz and 120kHz on the input and generates DC voltage with the level corresponding to the input frequency, ranging from 0V to 10V, with a highly linear response. The output DC voltage level is further scaled down by the voltage divider on the VFC32KU output, in order to achieve levels acceptable by the MCU. This makes the DC voltage output suitable for sampling, or further processing by the host MCU.

MikroE Mixed-Signal Hz to V 2 click

The input signal within the specified frequency range can be applied to either the PWM pin of the mikroBUS™ labelled as FIN on this Click board™ or to the external signal input terminal labelled as FEXT. This signal is AC coupled by a 1nF capacitor, meaning that no DC component will be affecting the connected source. The signal input source can be selected by the onboard switch, labelled as INPUT SEL. A DC voltage output ranging up to 3.3V is available both on the AN pin of the mikroBUS™ labelled as the VO, and the output terminal - labelled as the VOUT on this Click board™.

An onboard high-precision OFFSET potentiometer is used to fine-tune the output of the Click board™. It can be calibrated by using the offset potentiometer, by introducing a signal of a known frequency to either FEXT input terminal or the PWM input pin. An offset trimming procedure should be executed before the first use of the Click board™, since even slight variations in the components tolerances could affect the value at the output. It is recommended to correct the offset after longer time intervals, to compensate for the aging of the passive components on the Click board™.

The VFC32KU IC requires a dual power supply with ±15V. Therefore, this Click board™ utilizes another IC in order to provide the required voltages. It uses the TPS65131, a positive and negative output DC/DC Converter IC, also from Texas Instruments. This DC/DC converter has already been used in Boost-INV 2 click, so it was tested "on the field" for this purpose. Providing well-stabilized output with the plenty of power headroom, it is a perfect solution for the HZ to V 2 click, also.

To enable the conversion circuitry, the EN pin of the TPS65131 boost converter should be pulled to a HIGH logic level. This will activate the boost converter and provide the required power for the VFC32KU IC. This pin is routed to the mikroBUS™ CS pin and it is labelled as EN.

SPECIFICATIONS

Type Measurements
Applications The Hz to V 2 Click Board™ can be used in instrumentation, industrial, and automation markets. It is well suited for use in A/D conversion, long-term integration, frequency to voltage conversion, RPM measurement, capacitance measurement, frequency demodulation, and similar applications
On-board modules VFC32KU, a voltage-to-frequency and frequency-to-voltage converter from Texas Instruments; TPS65131, a positive and negative output DC/DC Converter, from Texas Instruments
Key Features Hz to V click features very good linearity, covers a wide frequency range and it has good temperature stability. Onboard high-precision trimmer potentiometer for increased accuracy of the converted DC voltage output
Interface GPIO
Compatibility mikroBUS
Click board size L (57.15 x 25.4 mm)
Input Voltage 3.3V

ONBOARD JUMPERS AND SETTINGS

Label Name Default Description
LD1 PWR - Power LED indicator
SW1 INPUT SEL Left Input signal source selection: left position mikroBUS™ FIN pin, right position FEXT input terminal
TB1 VOUT - Converted DC voltage output
TB2 FEXT - External signal input


PINOUT DIAGRAM

This table shows how the pinout of the Hz to V 2 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes Pin Mikrobus logo.png Pin Notes
Voltage OUT VO 1 AN PWM 16 FIN Signal IN
NC 2 RST INT 15 NC
Boost IC Enable EN 3 CS RX 14 NC
NC 4 SCK TX 13 NC
NC 5 MISO SCL 12 NC
NC 6 MOSI SDA 11 NC
Power Supply 3.3V 7 3.3V 5V 10 NC
Ground GND 8 GND GND 9 GND Ground

 

- description_tag: The HZ to V 2 Click Board™ contains a device that can converts the input frequency of the signal with virtually any wave shape to a DC voltage output, with a level proportional to the input frequency. Available from Debug Store UK. - title_tag: MikroE Hz To V 2 Click Board™ (MIKROE-3126) - manufacturer: Mikroelektronika d.o.o. - warranty: 12 months - amazon_enable: TRUE - amazon_title: Hz To V 2 Click Board - amazon_product_type: computercomponent - amazon_block: FALSE - amazon_prime_enable: FALSE - amazon_search: MikroElektronika Microelectronica MIKROE-1100 - amazon_uk_price: 36.96 - amazon_uk_currency: GBP - amazon_de_currency: EUR - amazon_de_price: 41.7648 - amazon_fr_currency: EUR - amazon_fr_price: 41.7648 - amazon_es_currency: EUR - amazon_es_price: 41.7648 - amazon_nl_currency: EUR - amazon_nl_price: 41.7648 - amazon_it_currency: EUR - amazon_it_price: 41.7648 - amazon_se_curency: SEK - amazon_se_price: 421.344 - amazon_product_id: 8606018713417 - amazon_product_id_type: EAN - amazon_update: Update - amazon_short_description: The HZ to V 2 Click Board™ contains a device that can converts the input frequency of the signal with virtually any wave shape to a DC voltage output, with a level proportional to the input frequency. It features a specialised IC labelled as VFC32KU, which has a good linear response and temperature stability. By applying a signal with the frequency up to 120kHz on its input, the Click Board™ will generate a DC voltage up to 3.3V. The IC is supplied by a dual-voltage boost DC/DC converter IC, which provides the power supply of ±15V, required for the VFC32KU IC operation. - amazon_long_description:

The HZ to V 2 Click Board™ contains a device that can converts the input frequency of the signal with virtually any wave shape to a DC voltage output, with a level proportional to the input frequency. It features a specialised IC labelled as VFC32KU, which has a good linear response and temperature stability. By applying a signal with the frequency up to 120kHz on its input, the Click Board™ will generate a DC voltage up to 3.3V. The IC is supplied by a dual-voltage boost DC/DC converter IC, which provides the power supply of ±15V, required for the VFC32KU IC operation.

- amazon_main_image: https://www.thedebugstore.com/images/product/lg-hz-to-v-2-front_1.jpg - amazon_other_image_1: https://www.thedebugstore.com/images/product/lg-hz-to-v-2-back_1.jpg - amazon_other_image_2: https://www.thedebugstore.com/images/product/lg-hz-to-v-2-click-in-use_1.jpg - amazon_other_image_3: https://www.thedebugstore.com/images/product/lg-hz-to-v-2-click-in-use_1.jpg - amazon_browse_node: 428655031 - mpn: MIKROE-3126 - backorder_label: If no stock shown above, check availability - google_product_category: 2082 - condition: new - custom_product: false - mpn: MIKROE-3126 - google_product_category: Electronics - custom_label_0: Click Board - examples:

We provide a demo application for the Hz to V 2 Click Board™ on our Libstock page, as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Library Description

Library provides generic functions for working with the click board.

Key functions :

Example Description

The application is composed of three sections:

void applicationTask()
{
 float voltage;
 char txt[20];
 voltage = hztov2_adcRead();
 if(voltage<0.99)
 {
 voltage = voltage * 1000.0;
 FloatToStr(voltage,txt);
 txt[5] = 'm';
 txt[6] = 'V';
 txt[7] = 0;
 }
 else
 {
 FloatToStr(voltage,txt);
 txt[5] = ' ';
 txt[6] = 'V';
 txt[7] = 0;
 }
 mikrobus_logWrite(txt,_LOG_LINE);
 Delay_ms(100);
}

The full application code, and ready to use projects can be found on our LibStock page.

Other mikroE Libraries used in the example:

Additional Notes and Information

Depending on the development board you are using, you may need USB UART click, USB UART 2 click or RS232 click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.

MIKROSDK

The Hz to V 2 Click Board™ is supported with mikroSDK - MikroElektronika Software Development Kit. To ensure proper operation of mikroSDK compliant click board demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using.

- attachments: [{"download_file":[{"download_file":"Hz To V 2 Click Board™ Schematic"}],"download_filetype":[{"download_filetype":"pdf"}]},{"download_file":[{"download_file":"Texas Instruments VFC32KU Voltage to Frequency Converter Datasheet"}],"download_filetype":[{"download_filetype":"pdf"}]}] - device_vendor: Texas Instruments - device_type: TPS65131RGET, VFC32KU - warranty: 12 months - brand: MikroE - key_feature_1: Frequency To Voltage Converter - manufacturer: Mikroelektronika d.o.o. - badge: - widget:

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- brands: gid://shopify/Metaobject/56256004319 - breadcrumbs: ["gid://shopify/Collection/447955239135","gid://shopify/Collection/241680580797","gid://shopify/Collection/241545314493"] - customhs_code: 847330 - detailed_description: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"These features allow "},{"type":"text","value":"Hz to V 2 Click Board™","bold":true,"italic":true},{"type":"text","value":" to be used in various frequency to voltage applications: in instrumentation, industrial, and automation markets. It is well suited for use in A/D conversion, long-term integration, frequency to voltage conversion, RPM measurement, capacitance measurement, and similar applications which can benefit from an accurate and reliable frequency to voltage conversion. Its function can be complemented by the "},{"type":"text","value":"Hz to V 2 Click Board™","bold":true},{"type":"text","value":", which does the opposite type of conversion: DC voltage to frequency. 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This makes the DC voltage output suitable for sampling, or further processing by the host MCU."},{"type":"text","value":""},{"type":"text","value":""},{"type":"text","value":""},{"type":"text","value":""},{"type":"text","value":""}]},{"type":"paragraph","children":[{"type":"text","value":"The input signal within the specified frequency range can be applied to either the PWM pin of the mikroBUS™ labelled as FIN on this Click board™ or to the external signal input terminal labelled as FEXT. This signal is AC coupled by a 1nF capacitor, meaning that no DC component will be affecting the connected source. The signal input source can be selected by the onboard switch, labelled as INPUT SEL. A DC voltage output ranging up to 3.3V is available both on the AN pin of the mikroBUS™ labelled as the VO, and the output terminal - labelled as the VOUT on this Click board™."}]},{"type":"paragraph","children":[{"type":"text","value":"An onboard high-precision OFFSET potentiometer is used to fine-tune the output of the Click board™. It can be calibrated by using the offset potentiometer, by introducing a signal of a known frequency to either FEXT input terminal or the PWM input pin. An offset trimming procedure should be executed before the first use of the Click board™, since even slight variations in the components tolerances could affect the value at the output. It is recommended to correct the offset after longer time intervals, to compensate for the aging of the passive components on the Click board™."}]},{"type":"paragraph","children":[{"type":"text","value":"The VFC32KU IC requires a dual power supply with ±15V. Therefore, this Click board™ utilizes another IC in order to provide the required voltages. It uses the TPS65131, a positive and negative output DC/DC Converter IC, also from Texas Instruments. This DC/DC converter has already been used in Boost-INV 2 click, so it was tested \"on the field\" for this purpose. Providing well-stabilized output with the plenty of power headroom, it is a perfect solution for the HZ to V 2 click, also."}]},{"type":"paragraph","children":[{"type":"text","value":"To enable the conversion circuitry, the EN pin of the TPS65131 boost converter should be pulled to a HIGH logic level. This will activate the boost converter and provide the required power for the VFC32KU IC. This pin is routed to the mikroBUS™ CS pin and it is labelled as EN."}]},{"type":"heading","level":3,"children":[{"type":"text","value":"SPECIFICATIONS"}]},{"type":"paragraph","children":[{"type":"text","value":"Type\nMeasurements\nApplications\nThe Hz to V 2 Click Board™ can be used in instrumentation, industrial, and automation markets. It is well suited for use in A/D conversion, long-term integration, frequency to voltage conversion, RPM measurement, capacitance measurement, frequency demodulation, and similar applications\nOn-board modules\nVFC32KU, a voltage-to-frequency and frequency-to-voltage converter from Texas Instruments; TPS65131, a positive and negative output DC/DC Converter, from Texas Instruments\nKey Features\nHz to V click features very good linearity, covers a wide frequency range and it has good temperature stability. Onboard high-precision trimmer potentiometer for increased accuracy of the converted DC voltage output\nInterface\nGPIO\nCompatibility\nmikroBUS\nClick board size\nL (57.15 x 25.4 mm)\nInput Voltage\n3.3V"}]},{"type":"heading","level":3,"children":[{"type":"text","value":"ONBOARD JUMPERS AND SETTINGS"}]},{"type":"paragraph","children":[{"type":"text","value":"Label\nName\nDefault\nDescription\nLD1\nPWR\n-\nPower LED indicator\nSW1\nINPUT SEL\nLeft\nInput signal source selection: left position mikroBUS™ FIN pin, right position FEXT input terminal\nTB1\nVOUT\n-\nConverted DC voltage output\nTB2\nFEXT\n-\nExternal signal input"}]},{"type":"heading","level":3,"children":[{"type":"text","value":""},{"type":"text","value":"PINOUT DIAGRAM"}]},{"type":"paragraph","children":[{"type":"text","value":"This table shows how the pinout of the "},{"type":"text","value":"Hz to V 2 Click Board™","bold":true},{"type":"text","value":" corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns)."}]},{"type":"paragraph","children":[{"type":"text","value":"Notes\nPin\nPin\nNotes\nVoltage OUT\nVO\n1\nAN\nPWM\n16\nFIN\nSignal IN\nNC\n2\nRST\nINT\n15\nNC\nBoost IC Enable\nEN\n3\nCS\nRX\n14\nNC\nNC\n4\nSCK\nTX\n13\nNC\nNC\n5\nMISO\nSCL\n12\nNC\nNC\n6\nMOSI\nSDA\n11\nNC\nPower Supply\n3.3V\n7\n3.3V\n5V\n10\nNC\nGround\nGND\n8\nGND\nGND\n9\nGND\nGround"}]},{"type":"heading","level":3,"children":[{"type":"text","value":" "}]}]} - summary:

The HZ to V 2 Click Board™ contains a device that can converts the input frequency of the signal with virtually any wave shape to a DC voltage output, with a level proportional to the input frequency. It features a specialised IC labelled as VFC32KU, which has a good linear response and temperature stability. By applying a signal with the frequency up to 120kHz on its input, the HZ to V 2 Click Board™ will generate a DC voltage up to 3.3V. The IC is supplied by a dual-voltage boost DC/DC converter IC, which provides the power supply of ±15V, required for the VFC32KU IC operation.