# Title: GainAMP Click Board™ ## Description: The GainAMP Click Board™ carries the LTC6912 dual-channel, low noise, digitally programmable gain amplifier (PGA), from Analog Devices. The click is designed to work on either a 3.3V or 5V power supply. It communicates with the target MCU over the SPI interface, with additional functionality provided by the following pins on the mikroBUS™ line: AN, RST. The GainAMP Click Board™ also features three pairs of screw terminals and a power indication LED. How Does The GainAMP Click Board™ Work? The gains for both channels are independently programmable, using a 3-wire SPI interface to select voltage gains of 0, 1, 2, 5, 10, 20, 50, and 100V/V (LTC6912-1). All gains are inverting. The LTC®6912 consists of 2 matched amplifiers with rail-to-rail outputs. When operated with unity gain, they will also process rail-to-rail input signals. A half-supply reference generated internally at the AGND pin supports single power supply applications. Operating from single or split supplies from 2.7V to 10.5V total. Programmable Gain Amplifier A programmable gain amplifier (PGA) is an electronic amplifier whose gain can be controlled externally (by analogue or digital signals). Specifications Type Amplifier Applications Data Acquisition Systems, Dynamic Gain Changing, Automatic Ranging Circuits, Automatic Gain Control. On-board modules LTC®6912 dual-channel gain amplifier Key Features Rail-to-Rail Output Swing, Rail-to-Rail Input Range, 2 Channels with Independent Gain Control, Three pairs of screw terminals, 3-wire SPI interface Interface Analog,GPIO,SPI Compatibility mikroBUS Click board size S (28.6 x 25.4 mm) Input Voltage 3.3V or 5V Pinout Diagram This table shows how the pinout on GainAMP click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes Analog input AN_IN 1 AN PWM 16 NC Shut down SHDN 2 RST INT 15 NC Chip select SPI_CS 3 CS TX 14 NC SPI Clock Input SPI_CLK 4 SCK RX 13 NC NC 5 MISO SCL 12 NC SPI Master Output Slave Input SPI_MOSI 6 MOSI SDA 11 NC Power supply +3.3V 7 3.3V 5V 10 +5V Power supply Ground GND 8 GND GND 9 GND Ground Maximum Ratings Description Min Typ Max Unit Total Supply Voltage (V+ to V–) 11V V Input Current ±10 mA Operating Temperature Range –40°C 85°C Jumpers and settings Designator Name Default Position Default Option Description JP1 AN_sel ON AN Analog input jumper. JP2 V+ Left VCC V+ selection. JP3 V- Left GND V- selection. ## Product type: Click Board ## Vendor: Mikroelektronika d.o.o. ## Tags: Amplifier, Analog Devices, Audio & Voice, Click Board, Linear Technology, MikroE ## Price range: 17.5 - 17.5 GBP ## Link: https://thedebugstore.com/products/mikroe-2555-gainamp-click-board-uk ## Compare-at price range: 25.0 - 25.0 GBP ## Options - Title: Default Title ## Collections - [New Products](https://thedebugstore.com/a/llms/collections/new-products-debug-store) - [Mikroelektronika d.o.o. (MikroE)](https://thedebugstore.com/a/llms/collections/mikroelektronika-catalogue-uk) - [Analog Devices Development Boards and Support Tools | Debug Store](https://thedebugstore.com/a/llms/collections/analog-devices-device-support-uk) - [Comprehensive Device Support and Solutions from Linear Technology for Debug Store](https://thedebugstore.com/a/llms/collections/linear-technology-device-support) - [Audio & Voice Click Boards™](https://thedebugstore.com/a/llms/collections/audio-voice-click-boards-catalogue) - [MikroE Click Boards™](https://thedebugstore.com/a/llms/collections/mikroe-click-boards-catalogue-uk) - [Audio Amplifier Click Boards™](https://thedebugstore.com/a/llms/collections/audio-amplifier-click-boards-catalogue) - [Click Boards™ Summer Sale](https://thedebugstore.com/a/llms/collections/inventory-sale) - [MikroE Sale](https://thedebugstore.com/a/llms/collections/mikroe-sale) - [MIKROE Stock](https://thedebugstore.com/a/llms/collections/mikroe-products-in-stock-sale) ## Variants - Default Title, SKU: MIKROE-2555, Available: yes, Inventory: 1 ## Metafields - full_description:

The GainAMP Click Board™  carries the LTC6912 dual-channel, low noise, digitally programmable gain amplifier (PGA), from Analog Devices. The click is designed to work on either a 3.3V or 5V power supply. It communicates with the target MCU over the SPI interface, with additional functionality provided by the following pins on the mikroBUS™ line: AN, RST.

The GainAMP Click Board™ also features three pairs of screw terminals and a power indication LED.

How Does The GainAMP Click Board™ Work?

The gains for both channels are independently programmable, using a 3-wire SPI interface to select voltage gains of 0, 1, 2, 5, 10, 20, 50, and 100V/V (LTC6912-1). All gains are inverting.

The LTC®6912 consists of 2 matched amplifiers with rail-to-rail outputs. When operated with unity gain, they will also process rail-to-rail input signals.

A half-supply reference generated internally at the AGND pin supports single power supply applications. Operating from single or split supplies from 2.7V to 10.5V total.

Programmable Gain Amplifier

A programmable gain amplifier (PGA) is an electronic amplifier whose gain can be controlled externally (by analogue or digital signals).

Specifications

Type Amplifier
Applications Data Acquisition Systems, Dynamic Gain Changing, Automatic Ranging Circuits, Automatic Gain Control.
On-board modules LTC®6912 dual-channel gain amplifier
Key Features Rail-to-Rail Output Swing, Rail-to-Rail Input Range, 2 Channels with Independent Gain Control, Three pairs of screw terminals, 3-wire SPI interface
Interface Analog,GPIO,SPI
Compatibility mikroBUS
Click board size S (28.6 x 25.4 mm)
Input Voltage 3.3V or 5V

Pinout Diagram

This table shows how the pinout on GainAMP click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes Pin Pin Notes
Analog input AN_IN 1 AN PWM 16 NC
Shut down SHDN 2 RST INT 15 NC
Chip select SPI_CS 3 CS TX 14 NC
SPI Clock Input SPI_CLK 4 SCK RX 13 NC
NC 5 MISO SCL 12 NC
SPI Master Output Slave Input SPI_MOSI 6 MOSI SDA 11 NC
Power supply +3.3V 7 3.3V 5V 10 +5V Power supply
Ground GND 8 GND GND 9 GND Ground

Maximum Ratings

Description Min Typ Max Unit
Total Supply Voltage (V+ to V–) 11V V
Input Current ±10 mA
Operating Temperature Range –40°C 85°C

Jumpers and settings

Designator Name Default Position Default Option Description
JP1 AN_sel ON AN Analog input jumper.
JP2 V+ Left VCC V+ selection.
JP3 V- Left GND V- selection.

 

- description_tag: The GainAMP Click Board™ is based on the LTC6912 dual-channel, low noise, digitally programmable gain amplifier (PGA). Available from Debug Store UK. - title_tag: MikroE GainAMP Click Board™ (MIKROE-2555) - manufacturer: Mikroelektronika d.o.o. - warranty: 12 months - amazon_enable: TRUE - amazon_title: GainAMP Click Board - amazon_product_type: computercomponent - amazon_block: FALSE - amazon_prime_enable: FALSE - amazon_search: MikroElektronika Microelectronica MIKROE-1100 - amazon_uk_price: 13.2 - amazon_uk_currency: GBP - amazon_de_currency: EUR - amazon_de_price: 14.916 - amazon_fr_currency: EUR - amazon_fr_price: 14.916 - amazon_es_currency: EUR - amazon_es_price: 14.916 - amazon_nl_currency: EUR - amazon_nl_price: 14.916 - amazon_it_currency: EUR - amazon_it_price: 14.916 - amazon_se_curency: SEK - amazon_se_price: 150.48 - amazon_product_id: 8606018710225 - amazon_product_id_type: EAN - amazon_update: Update - amazon_short_description: The GainAMP Click Board™ is based on the LTC6912 dual channel, low noise, digitally programmable gain amplifier (PGA).The Click Board™ is designed to work on either 3.3V or 5V power supply. It communicates with the target MCU over SPI interface, with additional functionality provided by the following pins on the mikroBUS line: AN, RST. - amazon_long_description:

The GainAMP click carries the LTC6912 dual channel, low noise, digitally programmable gain amplifier (PGA), from Analog Devices. The click is designed to work on either 3.3V or 5V power supply. It communicates with the target MCU over SPI interface, with additional functionality provided by the following pins on the mikroBUS™ line: AN, RST.

GainAMP click also features three pairs of screw terminals and a power indication LED.

How Does The GainAMP Click Board Work?

The gains for both channels are independently programmable, using a 3-wire SPI interface to select voltage gains of 0, 1, 2, 5, 10, 20, 50, and 100V/V (LTC6912-1). All gains are inverting.

The LTC®6912 consists of 2 matched amplifiers with rail-to-rail outputs. When operated with unity gain, they will also process rail-to-rail input signals.

A half-supply reference generated internally at the AGND pin supports single power supply applications. Operating from single or split supplies from 2.7V to 10.5V total.

Programmable Gain Amplifier

A programmable-gain amplifier (PGA) is an electronic amplifier whose gain can be controlled externally (by analog or digital signals).

- amazon_main_image: https://www.thedebugstore.com/images/product/lg-gainamp-front_1.jpg - amazon_other_image_1: https://www.thedebugstore.com/images/product/lg-gainamp-back_1.jpg - amazon_other_image_2: https://www.thedebugstore.com/images/product/lg-gainamp-click-in-use_1.jpg - amazon_other_image_3: https://www.thedebugstore.com/images/product/lg-gainamp-click-in-use_1.jpg - amazon_browse_node: 428655031 - mpn: MIKROE-2555 - backorder_label: If no stock shown above, check availability - badge: - widget:

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- google_product_category: 259 - examples:

Code examples for the GainAMP Click Board™, written for MikroElektronika hardware and compilers are available on Libstock.

The gains for both channels are independently programmable using an SPI interface to select voltage gains. The example controls channel A, increasing and decreasing gain with input buttons.

Code Snippet

The code snippet demonstrates a simple usage of the helper function.

01 void main()
02 {
03     system_init();
04 
05     gain_amp_set(GAIN_AMP_NOMINAL_0, GAIN_AMP_SW_SHUTDOWN);
06 
07     while( 1 )
08     {
09         if(Button(&GPIOE_IDR, 9, 100, 1)) 
10         {
11             byte = gain_amp_set(++gain & 0x07, GAIN_AMP_SW_SHUTDOWN);
12             GPIOD_ODR = (GPIOD_ODR & 0xFF00) | byte;
13         }
14         if(Button(&GPIOE_IDR, 8, 100, 1)) 
15         {
16             byte = gain_amp_set(--gain & 0x07, GAIN_AMP_SW_SHUTDOWN);
17             GPIOD_ODR = (GPIOD_ODR & 0xFF00) | byte;
18         }
19     }
20 }
- attachments: [{"download_file":[{"download_file":"GainAMP Click Board™ Schematic"}],"download_filetype":[{"download_filetype":"pdf"}]},{"download_file":[{"download_file":"Analog Devices LTC6912 Programmable Gain Amplifier Datasheet"}],"download_filetype":[{"download_filetype":"pdf"}]}] - condition: new - custom_product: false - mpn: MIKROE-2555 - google_product_category: Electronics - custom_label_0: Click Board - device_vendor: Linear Technology - device_type: LTC6912CGN-1#PBF - warranty: 12 months - brand: MikroE - manufacturer: Mikroelektronika d.o.o. - brands: gid://shopify/Metaobject/56256004319 - breadcrumbs: ["gid://shopify/Collection/447955239135","gid://shopify/Collection/241680580797","gid://shopify/Collection/241544298685"] - customhs_code: 847330 - detailed_description: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"The "},{"type":"text","value":"GainAMP Click Board™ ","bold":true,"italic":true},{"type":"text","value":" carries the LTC6912 dual-channel, low noise, digitally programmable gain amplifier (PGA), from Analog Devices. The click is designed to work on either a 3.3V or 5V power supply. It communicates with the target MCU over the SPI interface, with additional functionality provided by the following pins on the mikroBUS™ line: AN, RST."}]},{"type":"paragraph","children":[{"type":"text","value":"The "},{"type":"text","value":"GainAMP Click Board™","bold":true},{"type":"text","value":" also features three pairs of screw terminals and a power indication LED."}]},{"type":"heading","level":3,"children":[{"type":"text","value":"How Does The GainAMP Click Board™ Work?"}]},{"type":"paragraph","children":[{"type":"text","value":"The gains for both channels are independently programmable, using a 3-wire SPI interface to select voltage gains of "},{"type":"text","value":"0, 1, 2, 5, 10, 20, 50, and 100V/V ","bold":true},{"type":"text","value":"(LTC6912-1). All gains are inverting."}]},{"type":"paragraph","children":[{"type":"text","value":"The LTC®6912 consists of 2 matched amplifiers with rail-to-rail outputs. When operated with unity gain, they will also process rail-to-rail input signals."}]},{"type":"paragraph","children":[{"type":"text","value":"A half-supply reference generated internally at the AGND pin supports single power supply applications. Operating from single or split supplies from 2.7V to 10.5V total."}]},{"type":"heading","level":3,"children":[{"type":"text","value":"Programmable Gain Amplifier"}]},{"type":"paragraph","children":[{"type":"text","value":"A programmable gain amplifier (PGA) is an electronic amplifier whose gain can be controlled externally (by analogue or digital signals)."}]},{"type":"heading","level":3,"children":[{"type":"text","value":"Specifications"}]},{"type":"paragraph","children":[{"type":"text","value":"Type\nAmplifier\nApplications\nData Acquisition Systems, Dynamic Gain Changing, Automatic Ranging Circuits, Automatic Gain Control.\nOn-board modules\nLTC®6912 dual-channel gain amplifier\nKey Features\nRail-to-Rail Output Swing, Rail-to-Rail Input Range, 2 Channels with Independent Gain Control, Three pairs of screw terminals, 3-wire SPI interface\nInterface\nAnalog,GPIO,SPI\nCompatibility\nmikroBUS\nClick board size\nS (28.6 x 25.4 mm)\nInput Voltage\n3.3V or 5V"}]},{"type":"heading","level":3,"children":[{"type":"text","value":"Pinout Diagram"}]},{"type":"paragraph","children":[{"type":"text","value":"This table shows how the pinout on "},{"type":"text","value":"GainAMP click ","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\nAnalog input\nAN_IN\n1\nAN\nPWM\n16\nNC\nShut down\nSHDN\n2\nRST\nINT\n15\nNC\nChip select\nSPI_CS\n3\nCS\nTX\n14\nNC\nSPI Clock Input\nSPI_CLK\n4\nSCK\nRX\n13\nNC\nNC\n5\nMISO\nSCL\n12\nNC\nSPI Master Output Slave Input\nSPI_MOSI\n6\nMOSI\nSDA\n11\nNC\nPower supply\n+3.3V\n7\n3.3V\n5V\n10\n+5V\nPower supply\nGround\nGND\n8\nGND\nGND\n9\nGND\nGround"}]},{"type":"heading","level":3,"children":[{"type":"text","value":"Maximum Ratings"}]},{"type":"paragraph","children":[{"type":"text","value":"Description\nMin\nTyp\nMax\nUnit\nTotal Supply Voltage (V+ to V–)\n11V\nV\nInput Current\n±10\nmA\nOperating Temperature Range\n–40°C\n85°C"}]},{"type":"heading","level":3,"children":[{"type":"text","value":"Jumpers and settings"}]},{"type":"paragraph","children":[{"type":"text","value":"Designator\nName\nDefault Position\nDefault Option\nDescription\nJP1\nAN_sel\nON\nAN\nAnalog input jumper.\nJP2\nV+\nLeft\nVCC\nV+ selection.\nJP3\nV-\nLeft\nGND\nV- selection."}]},{"type":"heading","level":3,"children":[{"type":"text","value":" "}]}]} - summary:

The GainAMP Click Board™ is based on the LTC6912 dual-channel, low noise, digitally programmable gain amplifier (PGA).

The GainAMP Click Board™ is designed to work on a 3.3V or 5V power supply. It communicates with the target MCU over the SPI interface, with additional functionality provided by the following pins on the mikroBUS line: AN, RST.