Development Boards & Kits - AVR AVR-IOT WG Evaluation Board

SparkFun Accessories

Demonstration circuit 886 is an ultralow input voltage and dropout voltage supply using the 300mA output current LTC3035 linear regulator, which comes in a very small 8-pin 3mm × 2mm DFN package. The DC886 has an input voltage range from 1.7V to 5.5V and jumper selectable output voltages of 2.5V/3.3V/5V or a user-determined value.  Due to the 0.4V reference of the LTC3035, the DC886 is capable of supplying power to very low voltage applications, such as a (relatively) high current voltage references. The DC886 comes assembled with small 1uF ceramic capacitors to demonstrate the LTC3035's ability to  maintain stability with ceramic output capacitors.

Interface Development Tools

Interface Development Tools

The ADIN1110 is an ultra low power, single port, 10BASE-T1L transceiver design for industrial Ethernet applications and is com-pliant with the IEEE? 802.3cg-2019? Ethernet standard for long reach, 10 Mbps single pair Ethernet (SPE). Featuring an integrated media access control (MAC) interface, the ADIN1110 enables direct connectivity with a variety of host controllers via a serial peripheral interface (SPI). This SPI enables the use of lower power processors without an integrated MAC, which provides for the lowest overall system level power consumption. The ADIN1110 is designed for edge node sensors and field instruments deployed in building, factor, and process automation.The device operates from a single power supply rail of 1.8 V or 3.3 V. Supporting both 1.0 V and 2.4 V amplitude modes of operations and external termination resistors, the ADIN1110 supports use within intrinsically safe environments. The programmable transmit levels, external termination resistors, and independent receive and transmit pins make the ADIN1110 suited to intrinsic safety applications.The ADIN1110 has an integrated voltage supply monitoring and power-on reset (POR) circuitry to improve system level robustness, and has a 4-wire SPI for communication between the MAC inter-face and host processor.The ADIN1110 is available in a 40-lead, 6 mm ? 6 mm lead frame chip scale package (LFCSP).APPLICATIONSField instruments Flow meters Pressure and temperature transducers Building automation Actuators Fire panels Elevators Edge node sensors Factory automation

Interface Development Tools

The AD9763/AD9765/AD9767 are dual-port, high speed, 2-channel, 10-/12-/14-bit CMOS DACs. Each part integratestwo high quality TxDAC+? cores, a voltage reference, and digital interface circuitry into a small 48-lead LQFP. The AD9763/AD9765/AD9767 offer exceptional ac and dc performancewhile supporting update rates of up to 125 MSPS.The AD9763/AD9765/AD9767 have been optimized forprocessing I and Q data in communications applications. Thedigital interface consists of two double-buffered latches as well as control logic. Separate write inputs allow data to be written to the two DAC ports independent of one another. Separate clocks control the update rate of the DACs.A mode control pin allows the AD9763/AD9765/AD9767 to interface to two separate data ports, or to a single interleavedhigh speed data port. In interleaving mode, the input datastream is demuxed into its original I and Q data and then latched. The I and Q data is then converted by the two DACsand updated at half the input data rate.The GAINCTRL pin allows two modes for setting the full-scale current (IOUTFS) of the two DACs. IOUTFS for each DAC can be set independently using two external resistors, or IOUTFS for both DACs can be set by using a single external resistor. See theGain Control Mode section for important date codeinformation on this feature.The DACs utilize a segmented current source architecturecombined with a proprietary switching technique to reduce glitch energy and maximize dynamic accuracy. Each DAC providesdifferential current output, thus supporting single-ended or differential applications. Both DACs of the AD9763, AD9765, or AD9767 can be simultaneously updated and can provide anominal full-scale current of 20 mA. The full-scale currentsbetween each DAC are matched to within 0.1%.The AD9763/AD9765/AD9767 are manufactured on anadvanced, low cost CMOS process. They operate from a singlesupply of 3.3 V to 5 V and consume 380 mW of power.Product HighlightsThe AD9763/AD9765/AD9767 are members of a pin-compatible family of dual TxDACs providing 8-, 10-, 12-, and 14-bit resolution.Dual 10-/12-/14-Bit, 125 MSPS DACs. A pair of high performance DACs for each part is optimized for low distortion performance and provides flexible transmission of I and Q information.Matching. Gain matching is typically 0.1% of full scale, and offset error is better than 0.02%.Low Power. Complete CMOS dual DAC function operates on 380 mW from a 3.3 V to 5 V single supply. The DAC full-scalecurrent can be reduced for lower power operation, and a sleepmode is provided for low power idle periods.On-Chip Voltage Reference. The AD9763/AD9765/AD9767each include a 1.20 V temperature-compensated band gapvoltage reference.Dual 10-/12-/14-Bit Inputs. The AD9763/AD9765/AD9767each feature a flexible dual-port interface, allowing dual orinterleaved input data.ApplicationsCommunicationsBase stationsDigital synthesisQuadrature modulation3D ultrasound

3 Channel 20W Audio Power Amplifier with Mute and Standby

The LTC1474/LTC1475 series are high efficiency step-down converters with internal P-channel MOSFET power switches that draw only 10?A typical DC supply current at no load while maintaining output voltage. The LTC1474 uses logic-controlled shutdown while the LTC1475 features pushbutton on/off.The low supply current coupled with Burst Mode? operation enables the LTC1474/LTC1475 to maintain high efficiency over a wide range of loads. These features, along with their capability of 100% duty cycle for low dropout and wide input supply range, make the LTC1474/LTC1475 ideal for moderate current (up to 300mA) battery-powered applications.The peak switch current is user-programmable with an optional sense resistor (defaults to 325mA minimum if not used) providing a simple means for optimizing the design for lower current applications. The peak current control also provides short-circuit protection and excellent start-up behavior. A low-battery detector that remains functional in shutdown is provided.The LTC1474/LTC1475 series availability in 8-lead MSOP and SO packages and need for few additional components provide for a minimum area solution.Applications Cellular Telephones and Wireless Modems 4mA to 20mA Current Loop Step-Down Converter Portable Instruments Battery-Operated Digital Devices Battery Chargers Inverting Converters Intrinsic Safety Applications