256-tap digital potentiometer
2 September 2009
Analogue, Mixed Signal, LSI
ON Semiconductor has added a new 256-tap, single-channel linear-taper device to its family of digitally programmable potentiometers (DPP). The CAT5140 is a low-noise alternative to DACs and mechanical potentiometers, and it features an on-chip, 8-bit, non-volatile EEPROM memory, which allows designers to calibrate once and retain the wiper setting in memory on power-up. The new DPP also provides five additional non-volatile registers for general-purpose data storage, as well as a volatile wiper register for applications requiring temporary storage.
The integrated memory options in the CAT5140 save board space and costs compared to DAC-based design approaches, which typically require external memory and additional interconnects. Additionally, the ultra-low standby current of 2 μA, combined with integrated memory, make it well suited for mechanical potentiometer replacement in space-constrained, handheld applications. Since it is digitally programmable, the device is insensitive to mechanical vibrations, shock and oxidation, making it more stable and reliable than mechanical potentiometers across most environmental conditions.
The CAT5140 is a single-channel, linear-taper digital potentiometer with a 400 kHz, I²C-compatible interface for LCD screen adjustment; automated calibration; contrast, brightness and volume control; gain adjustment and line impedance matching applications. EEPROM endurance is 2 million data write stores and data retention is 100 years. The device operates from a 2,5 to 5,5 V supply voltage and comes in resistance values of 50 and 100 kΩ.
Further reading:
Online sensor technology hub
Analogue, Mixed Signal, LSI
Mouser’s sensor content hub offers an extensive collection of articles, blogs, eBooks, and product information from its technical experts and leading manufacturing partners.
Read more...
Ultra-low power MEMS accelerometer
Altron Arrow
Analogue, Mixed Signal, LSI
Analog Devices’ ADXL366 is an ultra-low power, 3-axis MEMS accelerometer that consumes only 0,96 µA at a 100 Hz output data rate and 191 nA when in motion-triggered wake-up mode.
Read more...
BT Audio 4 Click board
Dizzy Enterprises
Analogue, Mixed Signal, LSI
The BT Audio 4 Click board from MIKROE provides high-quality wireless audio streaming and data comms over Bluetooth.
Read more...
Precision MEMS IMU modules
Altron Arrow
Analogue, Mixed Signal, LSI
The ADIS16575/ADIS16576/ADIS16577 from Analog Devices are precision, MEMS IMUs that includes a triaxial gyroscope and a triaxial accelerometer.
Read more...
MEMS with embedded AI processing
Altron Arrow
Analogue, Mixed Signal, LSI
STMicroelectronics has announced an inertial measurement unit that combines sensors tuned for activity tracking and high-g impact measurement into a single, space-saving package.
Read more...
High-performance IMU
RS South Africa
Analogue, Mixed Signal, LSI
TDK Corporation has announced availability of the new InvenSense SmartMotion ICM-536xx family of high-performance 6-axis IMUs.
Read more...
High-temperature closed-loop MEMS accelerometer
RS South Africa
Analogue, Mixed Signal, LSI
This sensor from TDK is a high-temperature MEMS accelerometer with ±14 g input range and a digital interface for measurement while drilling applications.
Read more...
Dual accelerometers on the same die
Altron Arrow
Analogue, Mixed Signal, LSI
The LSM6DSV320X is the first mainstream inertial sensor to house a gyroscope alongside two accelerometers, one capable of sensing up to ±16 g and one sensing up to a staggering ±320 g.
Read more...
Dual-range IMU with edge processing
EBV Electrolink
Analogue, Mixed Signal, LSI
ST’s innovative LSM6DSV80X combines two accelerometer structures for 16 g and 80 g full-scale sensing, a gyroscope up 4000 dps, and embedded intelligence in a single component.
Read more...
High-reliability isolation amplifiers
EBV Electrolink
Analogue, Mixed Signal, LSI
The VIA series of isolation amplifiers from Vishay are designed to deliver exceptional thermal stability and precise measurement capabilities.
Read more...
printer friendly version