E-metering AFE

19 September 2012 Analogue, Mixed Signal, LSI

Texas Instruments has introduced a new line of analog front ends (AFEs) for power monitoring and control of smart e-meters. The new ADS131E08 family is available with 8, 6 or 4 channels and in 16- or 24-bit resolution.

When combined with the AMC1100 isolation amplifier, quad-channel ISO7241C digital isolator and 32-bit C2000 TMS320F2812 microcontroller (MCU), the new AFE family provides a three-phase class 1.0 and 0.5 smart e-metering solution that minimises power consumption while providing high linearity for accurate power measurement.

The solution also delivers the high-voltage isolation required to meet industry standards for power and communications in high-end industrial meters and Smart Grid infrastructure.

High all-around precision performance is enabled by a signal-to-noise ratio of 107 dB, ENOB of up to 20,4 bits, input signal range of ±2,4 V and common mode rejection ratio of -110 dB. This level of performance allows the AFEs to exceed 0.1 e-metering performance with less than 0,1% error for 1 to 1000 dynamic range.

Power consumption is 2 mW per channel over an operating temperature range of

-40°C to 105°C. A wide upgrade/downgrade path is provided, with options ranging from four to eight channels and 16 to 24 bits of resolution, to support a variety of smart e-metering applications, from two-phase systems to three-phase with tamper detection.

The solution reduces board space and overall solution size by integrating a delta-sigma analog-to-digital converter (ADC), FET-input programmable gain amplifier (PGA) with multi-gain options, operational amplifier (op-amp), internal reference, fault detection and alarm comparators.

Further reading:

Smart IMU for high/low-g acceleration
Altron Arrow Analogue, Mixed Signal, LSI
The ISM6HG256X is a 6-axis intelligent inertial measurement unit that enables smart motion sensing, edge computing, and real-time awareness.

Read more...

---

Compact Schottky diodes increase efficiency
RS South Africa Analogue, Mixed Signal, LSI
Gen 3 SiC Schottky diodes from Vishay in the compact SlimSMA HV package increase efficiency while enhancing electrical insulation.

Read more...

---

Silanna launches Plural ADC EVKs
Analogue, Mixed Signal, LSI
Silanna Semiconductor has released its first evaluation kits for the Plural data converter family to offer the fastest, most cost-effective way to evaluate and deploy high-performance ADCs.

Read more...

---

High speed, low noise 2 A driver
iCorp Technologies Analogue, Mixed Signal, LSI
The SGM8423-2A from SGMICRO is a high efficiency, class AB, low distortion power line driver optimised to accept a signal from a Power Line Carrier modem.

Read more...

---

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...

---