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February 2010 |
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| In this issue |
Featured Video |
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Octal, Low-Power 16-Bit, ±15-V Output, Serial Input D/A Converter:
Designed with a string architecture to keep power dissipation and costs low, the DAC8718 offers 3x the speed of existing devices while maintaining an INL accuracy of ±4 LSB maximum.
Resources: Data sheet
- Internal 4x or 6x programmable gain provides bipolar output range of ±16.5V or unipolar output range of 0V to +33V
- Dual-offset DACs
- Applications: Automatic test equipment, PLC and industrial process control, communications
DAC8718 Price (1ku): DAC8718 – $21.95; DAC8218 – $17.95; DAC7718R – $11.95 |
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Dual, 16-Bit, 625-MSPS Communications DAC: For wireless macro/micro base stations and software-defined radios, the DAC3282 reduces the board area of a complex I/Q transmit DAC by 80% and I/O count by 50% compared to other DACs. This solution saves board space in high-density, multi-antenna designs, while reducing the I/O pin count of preceding digital blocks, saving significant cost.
Resources: Data sheet
- Smallest dual 16-bit DAC for 500MSPS or greater
- Single 8-byte wide interleaved DDR LVDS input bus
- Applications: Cell base stations, diversity transmit, wideband communications
DAC3282 Price (1ku): $31.20 – $34.35 |
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2.7-V to 5.5-V, 16-Bit, 500-ksps, Low-Power Serial ADC with 8-Ch MUX and Breakout: The ADS8331/32 family offers the highest performance multi-channel, 16-bit, 500-ksps SAR ADC at the widest supply range (VA=2.7-5.5V, VBD=1.65-5.5V) available. This allows for user flexibility with space-saving features in the MUX breakout and wide supply range functionality for low-power operation.
Resources: Data sheet, block diagram, anti-aliasing calculation tool, op amp to ADC circuit topology calculator
- 91.5-dB SNR, 101-dB SFDR, –100-dB THD
- Applications: Communications, transducer interfaces, medical instruments, magnetometer, industrial process control, data acquisition systems, automatic test equipment
ADS8332 Price (1ku): $6.50 – $8.15 |
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350-mA, 6-MHz, 1.2-Vout, High Efficiency Step-Down Converter: The TPS62615 is a high-frequency synchronous step-down DC/DC converter optimized for battery-powered portable applications. The device supports up to 350-mA load current and enables the use of low-cost chip inductors and capacitors.
Resources: Data sheet, EVM
- Wide input voltage range of 2.3V to 5.5V
- High switching frequency enables the use of tiny ceramic capacitors and 0.47µH inductors
- Applications: Cell phones, smartphones, WLAN, GPS, Bluetooth®, DTV tuners, DC/DC micro modules
TPS62615 Price (1ku): $1.00 – $1.10 |
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USB-Friendly, Li-Ion Battery Charger and Power-Path Management IC: Designed for space-limited portable applications, the bq24075 charger operates from either a USB port or AC adapter and supports charge currents up to 1.5A. The integrated Dynamic Power Path Management (DPPM) function simultaneously and independently powers the system and charges the battery.
Resources: Data sheet, block diagram, EVM, battery charger quick search selection tool
- Input current limiting 100 or 500mA for USB apps, user-programmable for non-USB apps
- 3mm x 3mm, 16-pin QFN package
- Applications: Smartphones, portable media players
bq24075 Price (1ku): $1.60 – $1.80 |
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Standalone, Synchronous, Switch-Mode Li-Ion or Li-Polymer Battery Charger with 5-V to 28-V, Vcc Input: The bq24610 offers a highly efficient and accurate switch-mode charging solution for high-current and high-power applications that require a standalone charger—no host control is needed.
Resources: Data sheet, block diagram, EVM
- NMOS-NMOS synchronous buck controller
- External FETs; supports up to 6 cells
- Applications: Netbooks, mobile Internet devices, ultra-mobile PCs, PDAs, handheld terminals, industrial and medical equipment, portable equipment
bq24610 Price (1ku): $2.90 – $3.20 |
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Single-Output LDO, 200-mA, Dual-Level Fixed (1.2V or 1.5V) with Vset Pin:
The TPS728120150 is the first to combine low quiescent current with high-bandwidth PSRR, low noise and dynamic voltage scaling (DVS). Traditionally, high AC performance (noise, PSRR and transient response) came at the expense of higher quiescent currents; this device maintains high AC performance with low IQ and DVS.
Resources: Data sheet
- High PSRR: 65dB@1kHz; low IQ – 50mA
- Factory EEPROM programmable Vout
- Applications: Power rails with programming mode, dual-voltage levels for power-saving mode, leakage reduction for 90-nm and 65-nm processors, wireless handsets, smartphones, PDAs, MP3 players
TPS728120150 Price (1ku): $0.39 – $0.43 |
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N-Channel NexFET™ Power MOSFET: Designed for synchronous buck converters, the CSD16340Q3 MOSFET minimizes losses in power conversion and is optimized for 5-V gate drive applications, delivering both excellent light load as well as full load efficiency. It enables double the frequency for the same power loss vs. competing devices and offers up to 10% improvement in efficiency at light load.
Resources: Data sheet
- Ultra low Qg & Qgd
- Low resistance and gate charge
- Applications: Point-of-load synchronous buck converter for applications in networking, telecom and computing systems
CSD16340Q3 Price (1ku): $0.80 |
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Single-Chip Power Solution for Navigation Systems: The TPS65072 PMU integrates all power functions needed in any battery-powered processor application from the battery-charger up to the WLED boost for backlighting (up to 2 x 10 LEDs). Three highly efficient 2.25-MHz step-down converters provide the core voltage, memory and I/O voltage in a processor-based system.
Resources: Data sheet
- Enters a low-power mode at light load for maximum efficiency across the widest possible range of load currents
- Can be forced into fixed frequency PWM using the I²C interface for low-noise apps
- Applications: Portable navigation systems, PDAs, pocket PCs, OMAP™ and low-power DSP supply
TPS65072 Price (1ku): $3.60 – $4.00 |
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Multi-Rail, Multi-Phase Synchronous Buck Digital PWM Controller for Non-Isolated DC/DC Power Applications
Resources: Data sheet, block diagram
UCD9246 Price (1ku): $4.50 – $4.95 |
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SBS 1.1-Compliant Gas Gauge with 3rd-Generation Impedance Track™ Technology
Resources: Data sheet, technical reference manual
bq20z60-R1 Price (1ku): $4.30 – $3.90 |
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Multi-Channel Power Management Unit (PMU) with Li-Ion Battery Charger for Mobile Internet Devices
Resources: Data sheet
TPS658621A Price (1ku): $6.95 – $7.65 |
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SBS 1.1-Compliant, Low-Cost, Small-Footprint Gas Gauge and Protector
Resources: Data sheet
bq3060 Price (1ku): $3.95 – $3.55 |
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Ultra-Small, Low Input-Voltage, Low rON Load Switch Optimized for Low-Voltage Operation
Resources: Data sheet, video
TPS22907 Price (1ku): $0.36 – $0.55 |
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Dual-Channel, Precision-Adjustable, Current-Limited Power Switches for High-Current, Low-Voltage Rails in 3x3mm Package
Resources: Data sheet, block diagram, EVM
TPS2560 Price (1ku): $0.90 – $0.99 |
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20-W Stereo I²S Audio Amp with Speaker EQ, DRC, and 2.1 Support: The TAS5711 supports multiple output configurations from a single device, giving the flexibility to use a single board design (or even a single IC) to support multiple platforms/levels of audio performance. On-chip audio processing includes speaker EQ, two on-chip DRCs or 2-band DRC, 3D effects, bass boost (stereo mode only) and volume control.
Resources: Data sheet, block diagram, EVM
- 1 x 40-W mono, 2x20-W stereo, and 2x10-W + 1x20-W 2.1 support
- Reduces inventory and logistic costs
- Applications: TV, iPod dock, sound bar
TAS5711 Price (1ku): $2.75 – $2.50 |
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Fixed-Gain, 3.2-W Mono Class-D with Integrated DAC Noise Filter: The TPA2037D1 power amp produces 22% more power output in 25% less space while reducing the need for external, out-of-band filters on the inputs. The device is smaller than competing devices, has fewer external components, consumes less power, and has no pop.
Resources: Data sheet, EVM
- Reduces DAC out-of-band noise by 82% without external filter
- 3.2W into 4W at 5.0V (10% THD) for louder audio
- Applications: Wireless or cell handsets, PDAs, portable navigation devices, portable audio devices
TPA2037D1 Price (1ku): $0.65 – $0.75 |
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Dual, Full-Bridge PWM Motor Driver: The DRV8412 is a high-performance, integrated, dual full-bridge motor driver with an advanced protection system and power levels previously only attainable with discrete solutions. Because of the low RDS(on) of the H-bridge MOSFETs and intelligent gate drive design, these motor drivers can be efficient up to 97%, enabling the use of smaller power supplies and heatsinks.
Resources: Data sheet, EVM
- Applications: Brushed DC and stepper motors, three-phase permanent magnet synchronous motors, robotic and haptic control systems, actuators and pumps, precision instruments, TEC drivers
DRV8412 Price (1ku): $4.25 – $3.85 |
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Sound-Plus, High-Performance, JFET-Input Audio Op Amps: The OPA1641 op amp is designed for high-performance/low noise and distortion audio circuits such as audio ADC front-ends and DAC post filters where the performance of the analog stage(s) is critical in achieving the highest audio system quality and performance.
Resources: Data sheet, block diagram
- FET inputs: 15pA input bias current
- Ultra-low noise of 5nV/√Hz
- Applications: Professional audio equipment, analog and digital mixing consoles, broadcast studio equipment, high-end A/V receivers, high-end Blu-Ray players
OPA1641 Price (1ku): $1.05 – $0.95 |
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6-Ch Video Amp w/ 3-SD Filters, 3-SD/ED/HD/Full-HD Filters and 6-dB Gain:
The THS7368 video buffer supports many types of video systems, allowing one hardware solution to support a variety of models with varying feature sets. All filters feature bypassable sixth-order Butterworth characteristics that are useful as DAC reconstruction filters or as ADC anti-aliasing filters.
Resources: Data sheet, block diagram, EVM
- Output current drive: +80/–70mA
- Applications: Set-top box output video buffering, PVR/DVDR output buffering,
Blu-Ray output video buffer
THS7368 Price (1ku): $1.05 – $0.95 |
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High-Speed, Low-Distortion Fully Differential Programmable Gain Amp
for Wireless Infrastructure, Test and Measurement, and Military
Communications Apps
Resources: Data sheet, block diagram, EVM
PGA870 Price (1ku): $4.35 – $4.80 |
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MMC, SD Card, Memory Stick Voltage-Translation with ESD Protection, EMI Filtering and 2.9-V LDO: The TXS0206-29 allows system designers to easily interface low-voltage microprocessors to memory cards operating at 2.9V, including MultiMediaCards (MMCs), secure digital (SD) cards, and Memory Stick cards.
Resources:
Data sheet, video
- Auto direction-sensing architecture eliminates need for programming processor SPIO signals
- 20-bump wafer chip-scale package
- Applications: Mobile phones, PDAs, digital cameras, personal media players, camcorders, set-top boxes
TXS0206-29 Price (1ku): $0.60 |
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Low-Power, Dual-Channel Isolator: The ISO7420 is the fastest, most precise digital isolator with the highest magnetic immunity and longest life. Used in conjunction with isolated power supplies, this device prevents noise currents on a data bus or other circuit from entering the local ground and interfering with or damaging sensitive circuitry.
Resources: Data sheet, EVM, video
- 1.6-ns skew, 2-ns part-to-part, 1.5-ns distortion, 200Mbps
- Applications: Optocoupler replacement in industrial Fieldbus, Profibus, Modbus and DeviceNet data buses, servo control interface, motor control, power supplies, battery packs
ISO7420 Price (1ku): $2.35 – $2.10 |
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1-GHz Bandwidth, 8-Channel SPST Switch with Low and Flat On-State Resistance: The TS2DDR2811 single-pole single-throw (SPST) signal switch features low input/output capacitance, high bandwidth, low skew, and low crosstalk among channels, making this device suitable for a variety of high-bandwidth applications.
Resources: Data sheet, application note
- Select pin (SEL) selects any 1 of 8 channel inputs
- 20-PBGA (2.5mm x 3.0mm) package
- Applications: DDR2 signal switching, GbE LAN signal switching, hub and router signal switching, audio/video switching
TS2DDR2811 Price (1ku): $0.50 |
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±2.5°C Low-Power, Analog Output Temperature Sensor: The TMP20 is a CMOS, precision analog output temperature sensor available in a tiny SOT563 package. The device operates from –55°C to +130°C on a supply voltage of 2.7V to 5.5V with a supply current of 4µA.
Resources: Data sheet
- Operates as low as 1.8-V supply
- Applications: Cell phones, desktop and notebook computers, portable devices, consumer electronics, battery management, power supplies, HVAC, thermal monitoring, disk drives, appliances, automotive
TMP20 Price (1ku): $0.30 – $0.33 |
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System Block Diagrams: |
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| NEW LITERATURE AND VIDEOS |
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Guides:
Communications Infrastructure Guide - 1Q 2010 |
| ZigBee® Overview Brochure - 1Q 2010 |
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Application Reports, Design Notes and White Papers:
Power Reference Design for TMS320C6472, 12-Vin Digital Power Controllers, and LDOs |
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Wireline Data Transmission and Reception |
| FEC Decoding |
| Asynchronous Serial Mode for CC111xFx and CC251xFx |
| Implementing 'Diversity' Using Low-Power Radios |
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Frequency Scanning Using CC430Fx, CC110x, and CC111xFx |
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Creating a ZigBee Smart Energy Device with the MSP430F54xx and CC2530-ZNP |
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Videos:
Motor Control eLAB™ 10-Part Technical Video Series from TI, Avnet and Portescap |
Intro to Portescap Motor Portfolio
Portescap motor portfolio with TI and Avnet design tools |
Brushed vs Brushless
Motor design theory in brush and brushless motors |
PMSM Control Techniques: Power Stage
Power stages for typical motor controller design |
| Selecting the Right Voltage-Level Translator |
| Industry's Highest Power Class-D Amps – TAS5630/1 |
| TI Power Solutions for Intel® Core i3, i5, i7 Embedded Computers |
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Technology Days 2010: Make plans to join TI for a day packed with technical design sessions and technology exhibits. The seminars provide a learning forum where practical high-performance design solutions, tools, techniques, topologies and examples will be presented. First dates and locations are:
- March 23 – Anaheim, CA
- March 30 – San Diego, CA
- April 21 – Vancouver, BC, Canada
- April 27 & 28 – San Jose, CA
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| COMPANY-AUTHORED ARTICLES IN THE MEDIA |
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| “A new approach for driving high-power LED lighting applications,” by Jim Aliberti. LED Journal, October 2009. |
| “Isolated CAN Transceiver Assures Robust Fieldbus Design,” by Thomas Kugelstadt. ECN, November 2009. |
| “POWER TIP #17: Snubbing the Flyback Converter,” by Robert Kollman. Power Management DesignLine.com, November 2009. |
“SCB (Part 35): ANT – A unique option for wireless sensor networking,”
by Brian Blum. Planet Analog.com, November 2009. |
| “Part 4: Move Your System Strategy to the Forefront in Your ADC Designs,” by Bonnie Baker. En-Genius.net, November 2009. |
| “Energy harvesting and low-power RF radio technology,” by Mark Grazier. Electronics Weekly, November 2009. |
| “Determining the packaging limits range of linear regulators,” by Scot Lester. Embedded.com, November 2009. |
| “BAKER'S BEST: Understanding CMR and instrumentation amplifiers,” by Bonnie Baker. EDN, November 2009. |
| “Mixed-signal, embedded open doors for digital imaging,” by Suribhotla (Raja) Rajasekhar. EETimes, December 2009. |
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| CUSTOMER SUPPORT CONTACT INFORMATION |
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Visit TI’s Online Community and interact
with your peer engineers, TI engineers, and
other experts in order to ask questions,
share knowledge, explore ideas, and help
solve problems. |
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