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November 2009 |
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| In this issue |
Featured Video |
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12-Bit ADC with Integrated MUX, PGA, Comparator, Oscillator, and Reference: With its ultra-tiny (2.0 x 1.5 x 0.4mm), leadless QFN package, the ADS1015 is the world’s smallest 12-bit ADC. Designed for portable instrumentation in the industrial and medical markets, the device family also offers options for scalable selection of on-chip integration.
Resources:
Data sheet, EVM, Demonstration Kit
- High data rate and low power combined: 128SPS to 3.3kSPS and 150µA (typ.)
- Integrated PGA, comparator, MUX and reference
- Applications: Portable instrumentation, consumer goods, battery monitoring, temperature measurement, factory automation and process controls
ADS1015 Price (1ku): $1.10 / $1.45 |
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16-Bit, 1.0-GSPS 2x to 4x Interpolating DAC: The DAC5681Z provides the highest sample rate available for a single-channel, 16-bit DAC at 1GSPS. Its internal 2x/4x interpolation filters and Fs/4 or Fs/8 coarse mixer allow the device to use up to 400MHz of Nyquist spectrum without requiring high-cost FPGAs.
Resources:
Data sheet, EVM
- Configurable options: Low-pass or high-pass filter options; 2x to 32x clock multiplying PLL; 8-sample input data FIFO
- High performance for wideband signals: 69-dBc SNR, 77-dBc SFDR at 20MHz; 60-dBc SNR, 73-dBc ACLR at 180MHz (W-CDMA)
- Applications: Wireless communication, value test and measurement instruments, radar and defense systems, and general-purpose arbitrary waveform generators
DAC5681Z Price (100u): $38.70 |
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Quad-Supply Voltage Supervisor with Programmable Delay and Watchdog Timer: Devices in the TPS386000 family offer four complete supervisor modules in a single IC. They feature programmable delay time (1.4ms to 10s) and very low quiescent current (12µA typ).
Resources:
Data sheet, EVM
- Threshold accuracy: 0.25% (typ.) and adjustable threshold down to 0.4V
- Manual reset button and watchdog timer
- Applications: Analog sequencing, all DSP and microcontroller applications, all FPGA/ASIC applications
TPS386000 Price (1ku): $2.20 / $2.45 |
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200-mA, Ultra-low IQ, Fast Transient Response, RF Low-Dropout Linear Regulator: The TPS727xx series is the first to combine ultra-low quiescent current (70% lower than competing devices) with high-bandwidth PSRR, low noise and ultra-fast line and load transient performance. High AC performance no longer comes at the expense of higher quiescent currents as was traditionally the case.
Resources: Data sheet, EVM
- Ultra-low IQ: 7.9µA
- EEPROM-programmable VOUT
- Applications: Wireless handsets, smartphones, PDAs, MP3 players, wireless LAN, Bluetooth®, ZigBee®, remote controls, portable consumer products
TPS72715 Price (1ku): $0.48 / $0.55 |
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200-mA, Low IQ, Low Dropout Regulator for Portables: TLV700xx LDOs are low quiescent current devices with excellent line and load transient performance. Low output noise, very high power-supply rejection ratio (PSRR), and low dropout voltage make these devices ideal for most battery-operated handheld equipment.
Resources:
Data sheet
- Precision bandgap and error amplifier provides overall 2% accuracy
- All device versions have thermal shutdown and current limit for safety
- Applications: Wireless handsets, smartphones, PDAs, MP3 players, ZigBee® networks, Bluetooth® devices, Li-Ion handheld products, WLAN and other PC add-on cards
TLV70012 Price (1ku): $0.20 / $0.22 |
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Boost Converter for Fast On/Off LED Driver: The TPS61166 boost converter features a 20-V rated integrated switch FET and power diode that drives up to 5 LEDs in series. This device integrates a high-side switch FET that can turn on/off the LED current within 1-µs of the applied external PWM signal.
Resources: Data sheet, EVM
- High-side switch also provides input-to-output isolation during IC shutdown
- External PWM dimming method with frequency range from 60Hz to 40kHz
- Applications: Small form-factor LCD backlight, mobile phones, digital cameras, camcorders, and single lens reflex applications
TPS61166 Price (1ku): $1.35 / $1.50 |
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25- to 90-W Cascoded Flyback Power Supply Controller: The UCC28610 off-line flyback controller provides high efficiency across the complete load spectrum. The device offers a predictable maximum power threshold and a timed response to an overload, allowing safe handling of surge power requirements.
Resources: Data sheet
- Internal current sense and 30% fewer external components
- Fast start up with low standby power achieved by cascoded configuration
- Applications: AC/DC adapters (12W to 65W), high-efficiency housekeeping and auxiliary power supplies, offline battery chargers, consumer electronics
UCC28610 Price (1ku): $0.44 / $0.40 |
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N-Channel NexFET™ Power MOSFET: The CSD16301Q2 minimizes losses in power conversion and load management applications. In synchronous buck converters, this device is highly optimized for the most efficient gate drive scheme of 5Vgs.
Resources:
Data sheet
- n-ch device has exceptionally low gate charge, delivering improved efficiency vs. competing devices or the ability to increase frequency up to 2x for the same efficiency
- For load-switch applications, n-ch device offers competitive resistances, allowing battery-operated systems to run for a longer time
- Applications: DC/DC converters, battery and load management
CSD16301Q2 Price (1ku): $0.36 |
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System-on-Chip Solution for IEEE 802.15.4 and ZigBee® Applications: The CC2531 combines the performance of a leading RF transceiver with an industry-standard enhanced 8051 MCU, in-system programmable flash memory, and 8-KB RAM. Combined with the ZigBee protocol stack (Z-Stack™), the device provides a robust ZigBee USB dongle or firmware-upgradable network node. Combined with the RemoTI™ stack, the CC2531 provides a robust ZigBee RF4CE remote-control target for USB dongle or TV/STB implementations.
Resources:
Data sheet, EVM
- With various operating modes, the device is suited for systems where ultra-low power consumption is required
- Applications: USB-upgradeable 2.4-GHz IEE 802.15.4 systems, RF4CE remote controls for TV or set-top boxes, PC peripherals, ZigBee systems, home/building automation, lighting systems, industrial control and monitoring, consumer electronics, health care
CC2531 Price (1ku): $5.60 / $6.20 |
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Dual-Channel, 1/1, 200-Mbps Digital Isolator: Designed for equipment that requires isolation from high voltage, noise or ground differences, the ISO7421 features high precision and reliability, and long life (SiO2 dielectric capacitor stable over temperature and moisture life span > 25 years).
Resources:
Data sheet
- 1.6-ns skew, 2ns to part, 1.5-ns distortion, 200Mbps
- Applications: Optocoupler replacement in industrial Fieldbus/Profibus/Modbus/ DeviceNet data buses, servo control interface, motor control, power supplies, and battery packs
ISO7421 Price (1ku): $ 2.10 / $2.35 |
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High-Speed, USB 2.0 (480-Mbps) 1:2 Multiplexer/De-Multiplexer Switch with Single Enable: The TS3USB221E high-bandwidth switch is designed for the switching of high-speed USB 2.0 signals in handset and consumer applications—such as cell phones, digital cameras, and notebooks—with hubs or controllers with limited USB I/Os. The wide bandwidth (1GHz) of this switch allows signals to pass with minimum edge and phase distortion.
Resources:
Data sheet, EVM
- Flow-through layout package version enables easy board layout
- E version adds enhanced ESD protection, compliant with the industry's ISC61000-4-2 specification
- Applications: Routes signals for USB 1.0, 1.1, and 2.0
TS3USB221E Price (1ku): $0.60 |
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Industry's Smallest I²C Key Scan Controller: The TCA8418 frees up the processor from having to scan the keypad for presses and releases to provide power and bandwidth savings, with support for up to 80 keys and three-key combinations. In addition, the YFP package option offers a 70% board space savings.
Resources:
Data sheet
- Operating power supply voltage range of 1.65V to 3.6V allows for glueless interface to the newest low-voltage processors
- 2.0mm x 2.0mm wafer chip-scale package option offers 70% PCB board savings over competitive devices
- Applications: Smartphones, PDAs, GPS devices, MP3 players, digital cameras
TCA8418 Price (1ku): $1.20 |
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25-mW, Class-G, DirectPath™ Stereo Headphone Amplifier: TI’s Class-G technology in the TPA6141A2 significantly prolongs battery life by adjusting the voltage supplies with the audio signal to minimize power dissipation. The device plays audio more than 50% longer than competing solutions using a standard Li-Ion battery.
Resources:
Data Sheet, EVM
- Built-in, pop-suppression circuitry that completely eliminates disturbing pop noise
- DirectPath technology eliminates need for large output capacitors
- Applications: Cell phones, music phones, smartphones, portable media/MP3 players, portable CD/DVD players
TPA6141A2 Price (1ku): $ 0.85 / $ 0.95 |
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Dual Stepper Motor Controller/Driver: A highly robust stepper motor driver designed to meet the needs of high-volume, cost-sensitive applications, the DRV8821 offers a higher level of integration than single-channel stepper drives, reducing the size and cost of multiple motor drives. It includes robust protection circuitry including over current protection (OCP).
Resources:
Data sheet
- Integrated on-chip indexer capable of 1/8th micro-stepping
- 2-pin step/direction control interface simplifies connectivity to host processor
- Applications: Printers, scanners, office automation machines, gaming machines, factory automation, robotics
DRV8821 Price (1ku): $ 2.20 / $ 2.00 |
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System Block Diagrams:
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| NEW LITERATURE AND VIDEOS |
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Literature:
NexFET™ Solutions Guide for Intel® Atom™ IMVP6+ and IMVP6.5 Embedded Platforms: TI’s NexFET technology has further optimized TI’s processor solutions for Intel’s IMVP6+ Atom and IMVP6.5 embedded platforms. |
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Power Management Units for Embedded Processors: The TPS65K family of power management units (PMUs) offers complete solutions for a wide range of processor-based applications. These devices also integrate several high-efficiency DC/DC buck converters and LDOs for the processor core, IO, memory and other voltages. |
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Application Reports:
A Powerline Communication Line Driver Requirement Overview |
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Isolated RS-485 Reference Design |
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Isolated CAN Reference Design |
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Troubleshooting I²C Bus Protocol |
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Adding Hysteresis to Low-Battery Input on the TPS6211x |
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Create a Split-Rail Power Supply with a Wide Input Voltage Buck Regulator |
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LED lighting with remote control using CC2510 and CC1110 |
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Videos:
DAC8411 - Smallest 16-Bit DAC In The Industry
The DAC8411 (16-bit) is a low-power, single-channel, voltage output digital-to-analog converter (DAC). |
Zero-Drift Series Of Current Shunt Monitors
TI’s zero-drift current shunt family simplifies design and increases performance in current, voltage and power monitoring applications. |
OPA378 Lowest Noise Zero-Drift Op Amp
The OPA378 represents a new generation of zero-drift, micropower op amp that uses a proprietary auto-calibration technique to provide minimal input offset voltage (20µV) and offset voltage drift (0.1µV/°C). |
PGA280: Zero Drift High Voltage Programmable Instrumentation Amplifier
This device offers low offset voltage, near-zero offset and gain drift, excellent linearity, and nearly no 1/f noise with superior common-mode and supply rejection to support high-resolution precision measurement. |
Which is better? 12-bit SAR plus a PGA or a 16-bit converter?
Intro to analysis of the tradeoffs between designing with a 12-bit SAR combined with a multiplexed PGA, a 16-bit multiplexed SAR, or with a 16-bit multiplexed ΔΣ converter. |
Industry’s first 12-bit, 1-GSPS ADC
Industry’s first 12-bit, 1-GSPS ADC. Delivers 2x the speed of competition, unmatched resolution and linearity. |
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| COMPANY-AUTHORED ARTICLES IN THE MEDIA |
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| “Explaining Jitter in a Stable Discontinuous Flyback Converter,” by John Bottrill. How2Power.com, July 2009 |
| “SCB (Part 32): Digital Interface (Part 3) – The I²C Bus,” by Thomas Kugelstadt. Planet Analog.com, August 2009 |
| “Crosstalk in Multi-Channel High-Speed ADCs,” by Chuck Sanna. ECN: Print, August 2009 |
| “Enabling auto apps with Class D audio amps,” by Ryan Reynolds. Electronic Products: Print, September 2009 |
| “Spaced Out in HiRel,” by James Salzman. ECN: Print, September 2009 |
| “SCB (Part 33): Use an Op Amp to Drive a Precision ADC,” by Rick Downs. Planet Analog.com, September 2009 |
| “Implementing Cost-Effective Gigabit Serial Links Over Cable,” by Atul Patel. Industrial Control DesignLine.com, September 2009 |
| “Search out enhanced monolithic or multi-chip dc-to-dc converters with integrated MOSFETs,” by Rich Nowakowski and Robert Taylor. Power Management DesignLine.com, September 2009 |
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| CUSTOMER SUPPORT CONTACT INFORMATION |
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TI E2E Online Community: 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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