About Nan Price

Nan Price is an Associate Editor at Circuit Cellar. You can reach her at nprice@circuitcellar.com and @assoceditor_cc.

Energy-Measurement AFEs

Microchip_MCP3913The MCP3913 and the MCP3914 are Microchip Technology’s next-generation family of energy-measurement analog front ends (AFEs). The AFEs integrate six and eight 24-bit, delta-sigma ADCs, respectively, with 94.5-dB SINAD, –106.5-dB THD, and 112-dB Spurious-Free Dynamic Range (SFDR) for high-accuracy signal acquisition and higher-performing end products.

The MCP3914’s two extra ADCs enable the monitoring of more sensors with one chip, reducing its cost and size. The programmable data rate of up to 125 ksps with low-power modes enables designers to scale down for better power consumption or to use higher data rates for advanced signal analysis (e.g., calculating harmonic content).

The MCP3913 and the MCP3914 improve application performance and provide flexibility to adjust the data rate to optimize each application’s rate of performance vs power consumption. The AFEs feature a CRC-16 checksum and register-map lock, for increased robustness. Both AFEs are offered in 40-pin uQFN packages. The MCP3913 adds a 28-pin SSOP package option.

The MCP3913 and the MCP3914 AFEs cost $3.04 each in 5,000-unit quantities. Microchip Technology also announced the MCP3913 Evaluation Board and the MCP3914 Evaluation Board, two new tools to aid in the development of energy systems using these AFEs. Both evaluation boards cost $99.99.

Microchip Technology, Inc.
www.microchip.com

HMI Development on Intelligent Displays

4dsystems_HRES4D Systems and Future Technology Devices International Limited (FTDI) (aka, FTDI Chip) recently introduced the 4DLCD-FT843. The intelligent display solution incorporates FTDI Chip’s FT800 Embedded Video Engine (EVE) with the subsequent introduction of two additional products. This combined product gives design engineers a foundation on which to quickly and easily construct human-machine interfaces (HMIs).

The first of these products is the ADAM (Arduino Display Adaptor Module). This 47.5-mm × 53.4-mm Arduino-compatible shield permits communication between the Arduino via the SPI. The shield is suitable for use with Arduino Uno, Due, Duemilanove, Leonardo, Mega 1280/2560, and Pro 5V. The shield’s micro-SD card provides the Arduino-based display system with ample data storage. The 4DLCD-FT843 can use the micro-SD card to retrieve objects (e.g., images, sounds, fonts, etc.). Drawing power from the Arduino’s 5-V bus, the ADAM regulates the 4DLCD-FT843’s supply to 3.3 V. The FT800 EVE controller can handle many of the graphics functions that would otherwise need to be managed by the Arduino.

The ADAM is complemented by the 4DLCD-FT843-Breakout. With a 26.5-mm × 12-mm footprint, this simple breakout module enables the 4DLCD-FT843 to be attached to a general host or breadboard for prototyping purposes. It features a 10-way FPC connection for attachment with the 4DLCD-FT843 along with a 10-way, 2.54-mm pitch male pin header that enables it to directly connect to the host board. Both products support a –10°C-to-70°C operational temperature range.

The EVE-driven 4DLCD-FT843 has a 4.3” TFT QWVGA display with a four-wire resistive touchscreen. It features a 64-voice polyphonic sound synthesizer, a mono PWM audio output, a programmable interrupt controller, a PWM dimming controller for the display’s backlight, and a flexible ribbon connector.

Contact 4D Systems or FTDI Chip for pricing.

4D Systems
www.4dsystems.com.au

Future Technology Devices International Limited (FTDI) (aka, FTDI Chip)
www.ftdichip.com

Three-Axis Magnetometer Sensor

SaeligThe IST8301C is a single-chip three-axis digital magnetometer sensor that is housed in a 2.5-mm × 2.5-mm × 1-mm, 12-pin ball-grid array (BGA) package. The integrated chip includes three-axis magnetic sensors with an ASIC controller.

The IST8301C outputs 13-bit data over a ±1,000-µT magnetic field range in a fast-mode 400-kHz I2C digital output. The compact form factor is easily surface mounted and is well suited for high-volume production consumer electronics, navigation systems, and magnetometers.

The IST8301C embeds 32 slots of 16-bit first in, first out (FIFO) data for each of three output channels X, Y, Z. Since the host processor does not need to continuously read data from a sensor, the FIFO’s “wake up only as needed” operation enables consistent system-power saving. Functioning on 2.4 V with a 10-uA standby current and full operation at 300 uA, increased battery life can be attained in many portable applications.

The IST8301C offers a ±1° heading accuracy and a ±10-gauss magnetic field range. The sensor includes anti-offset and anti-temperature to help eliminate errors caused by temperature and factory mismatch.

Contact Saelig for pricing.

Saelig Co., Inc.
www.saelig.com

ARM mbed Platform for Bluetooth Smart Applications

OLYMPUS DIGITAL CAMERAThe nRF51822-mKIT simplifies and accelerates the prototyping process for Bluetooth Smart sensors connecting to the Internet of Things (IoT). The platform is designed for fast, easy, and flexible development of Bluetooth Smart applications.

The nRF51822 system-on-chip (SoC) combines a Bluetooth v4.1-compliant 2.4-GHz multiprotocol radio with an ARM Cortex-M0 CPU core on a single chip optimized for ultra-low-power operation. The SoC simplifies and accelerates the prototyping process for Bluetooth Smart sensors connecting to the IoT.

The nRF51822-mKIT’s features include a Bluetooth Smart API, 31 pin-assignable general-purpose input/output (GPIO), a CMSIS-DAP debugger, Programmable Peripheral Interconnect (PPI), and the ability to run from a single 2032 coin-cell battery.

Through mbed, the kit is supported by a cloud-based approach to writing code, adding libraries, and compiling firmware. A lightweight online IDE operates on all popular browsers running on Windows, Mac OSX, iOS, Android, and Linux OSes. Developers can use the kit to access a cloud-based ARM RVDS 4.1 compiler that optimizes code size and performance.

The nRF51822-mKIT costs $59.95.

Nordic Semiconductor ASA
www.nordicsemi.com

High-Speed CMOS DDR SDRAMs

AllianceMemoryThe AS4C4M16D1-5TIN, the AS4C8M16D1-5TIN, the AS4C16M16D1-5TIN, and the AS4C32M16D1-5TIN are high-speed CMOS double data rate synchronous DRAMs (DDR SDRAMs). The devices feature densities of 64 MB (AS4C4M16D1-5TIN), 128 MB (AS4C8M16D1-5TIN), 256 MB (AS4C16M16D1-5TIN), and 512 MB (AS4C32M16D1-5TIN) with a –40°C to 85°C industrial temperature range.

The DDR SDRAMs provide reliable drop-in, pin-for-pin-compatible replacements for industrial, medical, communications, and telecommunications products requiring high memory bandwidth. The devices are well-suited for high performance in PC applications. Internally configured as four banks of 1M, 2M, 4M, or 8M word × 16 bits with a synchronous interface, the DDR SDRAMs operate from a single 2.5-V (± 0.2 V) power supply and are lead- and halogen-free.

The AS4C4M16D1-5TIN, the AS4C8M16D1-5TIN, the AS4C16M16D1-5TIN, and the AS4C32M16D1-5TIN feature a 200-MHz clock rate and are available in a 66-pin TSOP II package with a 0.65-mm pin pitch. The 128-, 256-, and 512-MB devices are also available in a TFBGA package.

The DDR SDRAMs provide programmable read or write burst lengths of 2, 4, or 8. An auto pre-charge function provides a self-timed row pre-charge initiated at the end of the burst sequence. Easy-to-use refresh functions include auto- or self-refresh. A programmable mode register enables the system to choose a suitable mode for maximum performance.
Pricing for the AS4C4M16D1-5TIN, the AS4C8M16D1-5TIN, the AS4C16M16D1-5TIN, and the AS4C32M16D1-5TIN starts at $0.90 per piece.

Alliance Memory, Inc.
www.alliancememory.com