Reinforced Isolation Meets Highest Industrial Performance
TI's new data converter and digital isolation families enable industry-leading reinforced isolation ratings and precision performance for high-voltage applications
DALLASÂ – Texas Instruments (TI) (NASDAQ: TXN) today introduced digital isolation and delta-sigma modulator families that offer reinforced isolation to help protect electronic equipment from high line voltages. The ISO7842 family provides the industry's highest immunity reinforced isolators and the first to withstand an isolation barrier with a working breakdown voltage of 1,500 Vrms for a minimum lifetime of 40 years. The AMC1304 delta-sigma modulator family offers best-in-class precision performance and the lowest power consumption with reinforced isolation for current shunt monitoring. For more information about the new reinforced isolation families, visit www.ti.com/isolation-pr.
Manufacturers of factory automation, motor control and other industrial equipment are integrating more advanced electronics to reduce power and increase efficiency and system intelligence, driving data rate requirements higher and raising the bar on system performance. TI's new devices offer robust, high-speed, high-performance reinforced isolation to meet critical functional and safety isolation requirements for applications exposed to potential high voltage breakdowns, while providing decades of reliability with precision analog performance and high immunity for noisy industrial environments.
Key benefits of the ISO7842 family:
   -- Superior overall reinforced isolation breakdown ratings: Provides
       reinforced isolation with 8,000 V maximum transient overvoltage,
       according to standard DIN V VDE 0884-10. In addition, the ISO7842 has an
       isolation rating of 5,700 Vrms, according to standard UL 1577,
       surpassing typical ratings of 5,000 Vrms. (UL Recognized Component and
       DIN V VDE 0884-10 certifications planned).
   -- Long-term reliability: Industry's highest working voltage at 1,500 Vrms
       is up to 50 percent higher than competitive solutions.
   -- Minimize data transmission errors: High common mode transient immunity
       (CMTI) performance of 100 kV/microsecond provides reliable communication
       in noisy environments.
   -- Industry-leading protection: With the industry's highest surge voltage
       protection rating of 12,800 V(PEAK), the ISO7842 can withstand high
       instantaneous voltage pulses, which can help protect electronics from
       damage by voltage spikes.
   -- High speed and precision timing: The ISO7842 provides accurate timing
       with more than 100 Mbps data rate and low jitter.
Key benefits of the AMC1304 family:
   -- Leading precision performance: The offset error maximum of 150
       microvolts and gain error of +/- 0.3 percent is the industry's best DC
       performance. With the lowest thermal drift specification, the devices
       ensure high accuracy over the entire operating temperature range of -40
       C to 125 C. Industry-leading AC performance allows motor control
       designers to minimize distortion and noise.
   -- Lowest power: The industry's lowest power dissipation (maximum 7 mA,
       primary, and 5 mA, secondary side), together with a 50-mV input voltage
       range, reduces overall system power consumption by up to 80 percent.
   -- Simpler system design: Four AMC1304 delta-sigma modulators are the
       industry's first to integrate a low-dropout regulator (LDO), allowing
       designers to connect the modulator to an unregulated supply voltage.
       When paired with TI's C2000™ Delfino™ TMS320F2837x and
       TMS320F2807x microcontrollers (MCUs) with integrated modulator
       interfaces and sinc filters, the AMC1304 can boost system performance by
       precisely and efficiently acquiring multiple analog signals.
   -- High-voltage isolation protection: The devices deliver reinforced
       isolation of 7,000 V, peak, surge voltage of 10,000 V, and working
       voltages of 1,000 Vrms and 1,500 Vdc. They are UL Recognized Component
       to UL 1577 and certified to DIN V VDE 0884-10.
Tools and support to jump-start design
TI support, including hardware evaluation kits and reference designs from the TI Designs library, speeds time to market for designers using the ISO7842 and AMC1304 families.
The isolated current shunt and voltage feedback reference design (TIDA-00171) implements the AMC1304 delta-sigma modulator and the C2000™ TMS320F28377D Delfino™ MCU. This design is being demonstrated this week in a motor control application at the electronica 2014 Trade Fair, Hall A4, Booth 420. The isolated LVDS reference design (TIDA-00330) uses a reinforced isolated M-LVDS transceiver node and isolated power supply to enable a robust high-speed serial interface design, utilizing the ISO7842 digital isolator, SN65MLVD203 M-LVDS transceiver, SN6501 transformer driver and TPS76333 single-channel LDO. Two additional reinforced isolation reference designs are available today from TI.
Visit precision data converters or industrial interface forums in the TI E2E™ Community to search for solutions, get help, share knowledge and solve problems with fellow engineers and TI experts.
Package, availability and pricing
The four-channel ISO7842 is the first in a reinforced digital isolator family that will include quad-, triple-, dual- and single-channel devices. The ISO7842 is available today in production quantities and additional devices will be available in 1Q 2015. The AMC1304M25 with integrated LDO and CMOS interface and AMC1305L25 delta-sigma modulators are the first of seven devices, which will support inputs ranging from +/-50 to +/-250 mV. The AMC1304M25 is available for sampling Nov. 18, with production quantities of all devices planned for early 2015.
The devices are offered in a SOIC-16 DW package, and priced in quantities of 1,000 as listed below.
Part number       Description                             Device Price    Availability                      EVM
ISO7842Â Â Â Â Â Â Â Â Â Â Â Â 5,700 Vrms, 4-channel, 2/2
                          reinforced digital isolator         US$3.49           Now                               Nov. 18
AMC1304M25   Delta-sigma modulator with    US$3.80          Samples Nov. 18,
                           LDO regulator,                                                 production early 2015     Nov. 18
                          +/-250-mV input, and CMOS
                          interface
AMC1305L25    Delta-sigma modulator,           US$3.50            Now                               Nov. 18
                          +/- 250-mV input, LVDS         Â
Learn more about TI's reinforced isolationportfolio:
   -- View the ISO7842 and AMC1304M25 datasheets.
   -- Download a white paper on definitions and test methodologies for
       high-voltage reinforced isolation.
   -- Learn more about the benefits of reinforced isolation on the Analog Wire
       blog.
   -- Read "Isolated sensing systems with low power consumption" from the
       Analog Applications Journal.
   -- Watch a video about high-voltage characterization testing.
About Texas Instruments
Texas Instruments Incorporated (TI) is a global semiconductor design and manufacturing company that develops analog ICs and embedded processors. By employing the world's brightest minds, TI creates innovations that shape the future of technology. TI is helping more than 100,000 customers transform the future, today. Learn more at www.ti.com.Â
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