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new products
provides direct interfacing with low voltage microcontrollers
down to 1.62V, and an ON pin enables the LTM2887 to
be shutdown and use less than 10μA. The LTM2887
provides uninterrupted communications for common mode
transients greater than 30kV/μs and rugged ±10kV ESD
(HBM) protection across the isolation barrier.
The LTM2887 is available in two communications interface
versions. The LTM2887-I is I²C compliant at up to 400kHz
with bidirectional serial data (SDA) plus clock (SCL) and
three additional isolated CMOS logic signals that operate
at up to 10MHz. The LTM2887-S is SPI-compliant and
offers a total of six CMOS digital isolator communication
channels. All channels operate at up to 10MHz and include
three forward direction signals (CS, SCK and SDI) and
three reverse direction signals (SDO, DO1 and DO2).
When configured for SPI communications, the maximum
clock rate is 8MHz for unidirectional communication or
4MHz for round-trip bidirectional operation.
Industry’s first 2.1-MHz Class-D amplifier
transforms automotive audio design
Texas Instruments (TI) (NASDAQ:TXN) today introduced
the first 2.1-MHz Class-D audio amplifier specifically
designed for automotive applications. Supporting high-
resolution 96-kHz digital input, the compact TAS6424-Q1
enables high-fidelity audio with low distortion in automotive
infotainment applications. For more information, visit www.
ti.com/tas6424q1-pr-eu.tas6424-q1_chip_5dec16
The TAS6424-Q1 enables the use of smaller external
filters and eliminates up to 18 external components
to reduce system size and cost compared to existing
Class-D solutions. With maximum output power of 75 W
per channel, the device features the industry’s highest
switching rate and is the only audio amplifier that switches
above the AM band.
Key features and benefits of the TAS6424-Q1 Class-D
audio amplifier
Reduces electromagnetic interference (EMI): Switching
above the AM band eliminates the need for complex
avoidance schemes and eases electromagnetic
compatibility (EMC) designs while enabling the system
to meet Comité International Spécial des Perturbations
Radioélectriques (CISPR) 25 Class 5 EMC requirements.
Supports low impedance: Maintains stable audio playback
while driving low impedance loads of 2 ohms.
Advanced AC load diagnostics and line driver mode:
The TAS6424-Q1 provides detailed on-chip phase and
impedance measurements that designers can use to
configure the device with various outputs, such as woofer,
tweeter and line-level connections.
Enhanced audio quality: Improves distortion, power-supply
rejection and dynamic response with high-frequency
switching.
Lower noise: An integrated digital-to-analog converter
helps deliver a low system output noise of 42 uVrms for
automotive designs like external amplifiers and head units.
Better thermal performance: Reduces power dissipation by
as much as 60 percent compared to Class-AB amplifiers,
greatly reducing the need for fans or large heat sinks.
Tools and support to jump-start design
ThePurePath™Consolegraphical user interface isavailable
to help designers easily configure the TAS6424-Q1. To
simulate and optimize the device, designers can download
an IBISmodel or request a TAS6424-Q1 evaluation module.
Package, availability and pricing
The TAS6424-Q1 is available now in a PowerPAD™
thermally enhanced shrink small-outline package (HSSOP)
from the TI store and authorized distributors. Pricing is
US$5.97 in 1,000-unit quantities.
Analog Devices’ RS-485 Transceivers First
to Meet Stringent IEC Surge Standards
Analog Devices, Inc. today announced the industry’s
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