Mikroelektronika d.o.o.
ADC 11 Click-Platine
ADC 11 Click-Platine
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Key Features:
- Einkanaliger 16-Bit-ADC mit 250 kSps, einzelne 5-V-Versorgung, niedriger Versorgungsstrom, automatische Abschaltfunktion, SPI-kompatible Schnittstelle und mehr.
- Basierend auf dem LTC1864 - 16-Bit-A/D-Wandler mit sukzessiver Approximation und Sample-and-Hold-Funktion, der mit einer einzelnen 5-V-Versorgung von Analog Devices betrieben wird
- Kann für die Hochgeschwindigkeitsdatenerfassung, batteriebetriebene Instrumente mit geringem Stromverbrauch, isolierte und Remote-Datenerfassung und viele andere Anwendungen verwendet werden.
- mikroBUS: SPI-Schnittstelle
Das ADC 11 Click Board™ ist eine kompakte Zusatzplatine, die einen Hochleistungsdatenkonverter enthält. Diese Platine verfügt über den LTC1864, einen 16-Bit-Analog-Digital-Konverter mit 250 kSps von Analog Devices. Mit einem typischen Versorgungsstrom von nur 850 µA bei maximaler Abtastfrequenz gehört der LTC1864 zu den ADCs mit dem niedrigsten Stromverbrauch auf dem Markt. Nach der Konvertierung wechselt der LTC1864 in einen Energiesparmodus, wodurch der Versorgungsstrom weiter reduziert wird. Deshalb kann er in Anwendungen, die nicht die maximale Abtastrate des LTC1864 erfordern, mit angemessenen Mikroleistungspegeln betrieben werden. Dieses Click Board™ eignet sich für Hochgeschwindigkeitsdatenerfassung, batteriebetriebene Messgeräte mit geringem Stromverbrauch, isolierte und Remote-Datenerfassung und viele andere Anwendungen.
Das ADC 11 Click Board™ wird durch eine mikroSDK-kompatible Bibliothek unterstützt, die Funktionen enthält, die die Softwareentwicklung vereinfachen. Dieses Click Board™ wird als vollständig getestetes Produkt geliefert und ist bereit für den Einsatz auf einem System, das mit der mikroBUS™-Buchse ausgestattet ist.
How Does The ADC 11 Click Board™ Work?
The ADC 11 Click Board™ as its foundation uses the LTC1864, a 16-bit successive approximation A/D converter with a sample-and-hold feature that operates on a single 5V supply from Analog Devices. The supply current, which can be the only 850μA at 250ksps, drops at lower speeds because the LTC1864 automatically power-down between conversions. The high impedance analog input and the ability to operate with reduced spans down to 1V full scale allow direct connection to signal sources in many applications, eliminating the need for external gain stages. Equipped with the 3-wire SPI serial interface and extremely high sample rate-to-power ratio, this Click board™ represents an ideal solution for compact, low power, high-speed systems.
The ADC 11 Click Board™ communicates with MCU through the simple 3-wire serial I/O compatible with industry-standard SPI interface. The LTC1864 has an internal conversion clock so that the clock rate does not affect the conversion. This fact allows the clock rate to run to 20MHz without concern for sample-and-hold droop at low clock frequencies or clocking the ADC too fast at high clock frequencies. The data transfer requires only 16 clock cycles which minimize the amount of time necessary to transfer the data. The entire conversion can be transferred in only 800ns if the conversion clock runs at the maximum rate of 20MHz.
The ADC 11 Click Board™ operates only with a 5V logic voltage level. The board must perform appropriate logic voltage level conversion before use with MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used, as a reference, for further development.
SPECIFICATIONS
| Type | ADC |
| Applications | Can be used for high-speed data acquisition, low power battery-operated instrumentation, isolated and remote data acquisition, and many other applications. |
| On-board modules | LTC1864 - 16-bit successive approximation A/D converter with a sample-and-hold feature that operates on a single 5V supply from Analog Devices |
| Key Features | One channel 16bit 250ksps ADC, singl 5V supply, low supply current, auto-shutdown feature, SPI compatible interface, and more. |
| Interface | SPI |
| Compatibility | mikroBUS |
| Click board size | S (28.6 x 25.4 mm) |
| Input Voltage | 5V |
PINOUT DIAGRAM
This table shows how the pinout on the ADC 11 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).
| Notes | Pin |  |
Pin | Notes | |||
|---|---|---|---|---|---|---|---|
| NC | 1 | AN | PWM | 16 | NC | ||
| NC | 2 | RST | INT | 15 | NC | ||
| SPI Chip Select | CS | 3 | CS | RX | 14 | NC | |
| SPI Clock | SCK | 4 | SCK | TX | 13 | NC | |
| SPI Data OUT | SDO | 5 | MISO | SCL | 12 | NC | |
| NC | 6 | MOSI | SDA | 11 | NC | ||
| NC | 7 | 3.3V | 5V | 10 | 5V | Power Supply | |
| Ground | GND | 8 | GND | GND | 9 | GND | Ground |
ONBOARD SETTINGS AND INDICATORS
| Label | Name | Default | Description |
|---|---|---|---|
| LD1 | PWR | - | Power LED Indicator |
ADC 11 CLICK ELECTRICAL SPECIFICATIONS
| Description | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | - | 5 | - | V |
| Analog Input Supply Voltage | 0 | - | 5 | V |
| Resolution | 16 | - | - | bits |
| Sampling Rate | - | - | 250 | ksps |
| Operating Temperature Range | -40 | +25 | +85 | °C |
Software Support
We provide a library for the ADC 11 Click Board™ as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.
The package can be downloaded/installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on the mikroE GitHub account.
Library Description
This library contains an API for the ADC 11 Click Board™ driver.
Key Functions
adc11_cfg_setup- Config Object Initialization function.adc11_init- Initialization function.adc11_default_cfg- Initialization function.
Example Description
This library contains an API for the ADC 11 Click Board™ driver. The library contains drivers for measuring ADC values and for calculation voltage.
The demo application is composed of two sections :
void application_task ( void ) {
adc11_get_voltage( &adc11, &avg_adc_data, &voltage );
log_printf( &logger, " Volatge : %.3f V rn", voltage );
log_printf( &logger, "---------------------------rn");
Delay_ms( 2000 );
}
The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on mikroE GitHub account.
Other mikroE Libraries used in the example:
- MikroSDK.Board
- MikroSDK.Log
- Click.Adc11
Additional Notes and Information
Depending on the development board you are using, you may need a 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 ADC 11 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.
ADC 11 Click-Platine
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