| To subscribe to the TI Analog Connection eNewsletter, please click here. |
October 2009 |
|
| In this issue |
Featured Video |
|
|
|
|
Industry’s First 12-Bit, 1-GSPS ADC: The ADS5400 delivers unmatched resolution and linearity in systems requiring over 200MHz of signal bandwidth. A fully buffered analog input eliminates kickback from the sample-and-hold amplifier. The device also offers fine gain, offset and phase adjustments to ease interleaving or I/Q balancing when using two or more ADS5400s.
Resources:
Data sheet, samples, EVM
- 75-dBc SFDR with 59-dB SNR
- 2.1-GHz bandwidth enables wide-band undersampling
- Fully buffered analog input
- Applications: Radar and defense electronics, test and measurement equipment, wideband wireless communications, general-purpose, high-speed digitizers
ADS5400 Price (100u): $775 |
| |
16-Bit, 800-MSPS, Dual-Channel DAC with 2x/4x/8x Interpolation: The DAC5689 features a dual CMOS digital data bus; three integrated 2x interpolation filters allowing for 2x, 4x and 8x interpolation modes; onboard clock multiplier; and an internal voltage reference. The DAC5688 offers superior linearity, noise, crosstalk and interpolation and inverse SINC filter performance.
Resources:
Data sheet, samples
- CMOS input bus provides 250-MSPS data transfer per DAC channel
- By interleaving samples onto a single input bus, half-rate data can be interpolated by 2x for dual-DAC mode
- Applications: Wireless communications infrastructure, software-defined radio, power amp linearization, 802.16d/e, test and measurement instrumentation, radar systems
DAC5689 Price (1ku): $ 28.95 / $ 29.95 |
| Back to top |
|
|
25-mW, DirectPath™ Stereo Headphone Amp with Pop Suppression (WCSP): The TPA6136A2 DirectPath (cap-free) stereo headphone amp operates from a 2.3-V to 5.5-V supply, consuming 2.1mA of typical supply current. Gain is selectable from 0 to 6dB, and the amp drives 25mW into 16-Ω speakers from a single 2.3-V supply.
Resources:
Data sheet, samples, EVM
- Shutdown mode reduces supply current to less than 1µA; Hi-Z mode allows the headphone jack to be shared with another output source, such as video
- Fully differential or SE stereo inputs
- Applications: Mobile phones, Smartphones, PDAs, portable MP3/CD/media players, notebooks, personal navigation devices, portable gaming
TPA6136A2 Price (1ku): $ 0.70/ $ 0.80 |
| |
Industry’s Only Signal Conditioning Amp with an Input Range From 20mV to 30V: The PGA280 is a high-voltage programmable gain instrumentation amp with digital gain control. Its unique input gain range from 1/8 V/V (attenuation) to 128V/V acts as a universal input voltage range with the ability to input signals from over 30V down to a few mV.
Resources:
Data sheet, samples
- Wide common-mode range with high input impedance maintains signal accuracy with unknown source resistance and variations
- Additional output gain step of 1.4V/V allows very fine range adjustment
- Applications: High-precision signal instrumentation, multiplexed data acquisition, high-voltage analog input amp, universal industrial analog input
PGA280 Price (1ku): $ 3.20/ $ 2.90
|
| |
15-W, Filter-Free Class-D Stereo Amp with SpeakerGuard™: The TPA3110D2 analog input amp features advanced EMI suppression technology that allows replacement of the traditional inductor-based reconstruction filters with low-cost ferrite bead filters, yielding significant BOM and board space savings. SpeakerGuard speaker protection circuitry, consisting of a variable power limiter and DC detection, protects speakers from being overdriven or damaged by DC currents, reducing customer returns and associated support costs.
Resources:
Data sheet, samples, EVM
- 15W/16V/8Ω, 10W/13V/8Ω or 13W/12V/4Ω (10% THD + noise)
- Excellent THD+N and click/pop performance
- Applications: TVs, consumer audio equipment, monitors, digital radio
TPA3110D2 Price (1ku): $ 1.60/ $ 1.45 |
| |
3-W Mono Class-D Audio Amp with AGC/DRC: The TPA2018D1 is a filter-free power amp with volume control, SmartGain™ dynamic range compression and automatic gain control in a space-saving WCSP package. The DRC/AGC function, programmable via a digital I²C interface, can be configured to automatically prevent distortion of the audio signal and enhance quiet passages that are normally not heard.
Resources:
Data sheet, samples, EVM
- DRC/AGC can be configured to protect the speaker from damage at high power levels and compress the dynamic range of music to fit within the dynamic range of the speaker
- Gain selectable from –28dB to +30dB in 1-dB steps
- Applications: Wireless handsets, Smartphones, PDAs, personal navigation devices, notebooks, portable docking stations, portable games, portable DVD players
TPA2018D1 Price (1ku): $ 0.90/ $ 0.99 |
| Back to top |
|
|
800-mA, Single-Input, Single-Cell, Li-Ion Battery Charger with Auto Start: The bq2404x devices are highly integrated Li-Ion linear chargers for space-limited portable applications. Operating from either a USB port or AC adapter, the devices feature a high input voltage range with input overvoltage protection to support low-cost unregulated adapters.
Resources:
Data sheet, samples, EVM
- Charger power stage and charge current sense functions are fully integrated
- 30-V input rating with input OVP
- Applications: Smartphones, PDAs, MP3 players, low-power, handheld devices
bq24040 Price (1ku): $ 1.15/ $ 1.30 |
| |
Integrated USB Switch with Boost Converter: The TPS2500 is an integrated device that meets USB 5-V power requirements from a 1.8-V to 5.5-V input. The input can be supplied by sources including DC/DC regulated supplies (e.g. 3.3V) or batteries including single-cell Li+, two-cell or three-cell NiCd, NiMH, or alkaline.
Resources:
Data sheet, samples, EVM
- Features include a USB 2.0-compliant power output, output switch enable, current limit, and over-current fault reporting
- Applications: Media players, printers without native 5-V supply, USB On-the-Go applications, any USB app without a native 5-V supply
TPS2500 Price (1ku): $ 1.20/ $ 1.35 |
| |
N-Channel NexFET™ Power MOSFET: The CSD163xx devices are high-performance power MOSFETs devices designed for synchronous buck applications with an input rail of 12V or less. Designers can use a 5-V gate drive scheme for reduced switching losses, which enables higher frequency of operation without the traditional trade-off of prohibitively high resistance at 5V.
Resources:
Data sheet, samples
- Reduce the amount of ringing on the converter switch node by as much as 4V
- Up to 2% improved efficiency at 1-MHz switching frequency and up to 10% improvement in efficiency at light load vs. competitive devices
- Applications: Point-of-load synchronous buck in networking, telecom and computing systems, synchronous or control FET applications
CSD16323Q3 Price (1ku): $ 1.10 |
| |
12-Channel Sequencer and System Health Monitor: The UCD90120 integrates a 12-bit ADC with a 2.5-V internal reference for monitoring up to 13 power supply voltage, current, or temperature inputs. The device provides both JTAG and PMBus communication interfaces for pre-production and in-system configuring and monitoring.
Resources:
Data sheet, samples, EVM
- Warnings and fault detection for over-voltage and under-voltage, current, and temperature
- JTAG and PMBus communication interface
- Applications: Industrial/ATE, telecommunications and networking equipment, servers and storage systems, any system requiring sequencing and monitoring of multiple power rails
UCD90120 Price (1ku): $ 4.95/ $ 5.45 |
| Back to top |
|
|
Integrated IF Transceiver for Broadband Wireless Applications: The TRF2443 is a highly integrated IF transceiver designed for broadband point-to-point wireless communications applications. The receiver chain integrates an IQ demodulator and provides more than 90dB of gain range, obtained with a combination of analog and digital controlled VGAs.
Resources:
Data sheet, samples, EVM
- Integrated programmable baseband low-pass filter gives flexibility to receive signals with different bandwidths
- Flexibility to add an external IF filter to further remove unwanted signals
- Applications: Wireless microwave backhaul, point-to-point microwave, broadband wireless communications, WiMAX IF transceiver
TRF2443 Price (1ku): $ 24.00/ $ 25.00 |
| |
Single-Chip RF & MCU Mini Development Kits: The CC1110 and CC2510 mini development kits offer easy prototyping of a single-chip RF solution. A wireless sensor prototype using only the CC1110Fx or CC2510Fx can be built using these kits.
- Include free special 16-kb kick-start version of IAR EW 8051, enabling full evaluation of SimpliciTI™ software, SmartRF™ Studio and Packet Sniffer
- 1x CC debugger can be used to debug custom hardware
CC2510 Mini Development Kit Price (1u): $75
CC1110 Mini Development Kit Price (1u): $75
|
| Back to top |
|
|
Industrial Ethernet PHY: The TLK100, a single-port Ethernet PHY for 10BaseT and 100Base TX signaling, integrates all the physical-layer functions needed to transmit and receive data on standard twisted-pair cables. This device supports the standard Media Independent Interface (MII) for direct connection to a Media Access Controller (MAC).
Resources:
Data Sheet, samples, EVM
- Designed for power-supply flexibility—can operate with a single 3.3-V power supply or with combinations of 3.3-V, 1.8-V, and 1.1-V power supplies for reduced-power operation
- Applications: Industrial controls, factory automation, general embedded apps
TLK100 Price (1ku): $ 2.50/ $ 2.25 |
| |
Remote 16-Bit I²C and SMBus, Low-Power I/O Expander With Interrupt Output and Config Registers: The TCA9535, designed for 1.65-V to 5.5-V VCC operation, provides general-purpose, remote I/O expansion for most microcontroller families via the I²C interface.
Resources:
Data Sheet, samples
- Two 8-bit configuration (input or output selection), input port, output port, and polarity inversion (active-high or active-low operation) registers
- At power-on, I/Os configured as inputs
- Applications: Fan, LED and temperature monitoring; server and computing; telecom
TCA9535 Price (1ku): $ 1.00 |
| Back to top |
|
|
Low-Power, 1.4-V Temperature Switch in SOT563:The TMP302x offers low power (15µA max) and ease-of-use through pin-selectable trip points and hysteresis. The device requires no additional components for operation; it can function independent of microprocessors or microcontrollers.
Resources:
Data sheet,
samples
- Factory-programmed trip point and open-drain switch output
- 2.56mm² total area
- Applications: Cell phone handsets, portable media players, consumer electronics, servers, power-supply systems, DC/DC modules, thermal monitoring, electronic protection systems
TMP302 Price (1ku): $ 0.30/ $ 0.33 |
| |
1x/2x Remote Junction Temp Sensor with Beta Correction and Dedicated Alert Pins: The TMP431 and TMP432 are remote temperature sensor monitors with a built-in local temperature sensor. The remote temperature sensor diode-connected transistors are typically low-cost NPN- or PNP-type transistors or diodes that are an integral part of microcontrollers, microprocessors, or FPGAs.
Resources:
Data sheet,
samples
- Remote accuracy ±1°C for multiple IC manufacturers with no calibration needed
- Include beta compensation (correction); series resistance cancellation; programmable non-ideality factor, resolution, and threshold limits; and min/max temperature monitors
- Applications: Projectors, servers, industrial controllers, central office telecom equipment, desktops and notebooks, storage area network, industrial and medical equipment, processor/FPGA temperature monitoring
TMP431/2 Price (1ku): $ 0.99/ $ 1.10 |
| Back to top |
|
|
|
System Block Diagrams:
|
| Back to top |
| NEW LITERATURE AND VIDEOS |
|
Literature:
LED Reference Design Cookbook: 17 reference designs for general, backlight and automotive lighting designs. |
|
Ground Loop Break (GLB) Circuits Application Note |
|
Comparing Bus Solutions Application Note |
|
Stellaris Tiny DC-DC Converter Reference Design Application Report |
|
How to Operate Fuel Gauges bq20z7x/8x/9x and SMBus-Like Smart Chargers bq24745/47/65 Without a Host Controller Application Report |
|
bq3060 Gas Gauge Circuit Design Application Report |
| |
Video:
Protecting High-Speed I/Os from ESD: The TLK6201EA, a high speed analog equalizer, and the TPD2E009, a two-channel ESD solution, work together to create a clean recovered signal and protect high-speed I/Os from ESD. |
| Interface ONET 10G SFP & Transceivers: TI’s broad solutions for 10G SFP+ transceivers can help designers easily meet the Class Level 1 power requirements specified in SFF 8431. |
| UCD90120: 12-Channel Sequencer and System Health Monitor: The UCD90120 features power supply margining and comprehensive nonvolatile error logging. |
| Back to top |
|
|
|
Join us online on November 17th for a day of interactive problem solving. Attend live and on-demand training and chat with TI subject matter experts who will be available in Office Hours forums to answer real-time questions. Topics will include DSPs, microcontrollers, power, amplifiers, interface, and data converters. Register now.
|
| Back to top |
| COMPANY-AUTHORED ARTICLES IN THE MEDIA |
|
| “Voltage Supervisors Pull Multiple Duties,” by Scot Lester. Low-Power Design: Online, July 2009 |
| “SCB (Part 31): Digital interface (cont) The SPI Bus,” by Thomas Kugelstadt. Planet Analog.com, July 2009 |
| “Pump up the volume! Enhance audio quality and power in mobile phones and portable media players,” by Sachin Ranganathan (TI), Don Dapkus (TI) and Pierre Mars (CAP-XX Ltd). Mobile Handset DesignLine.com, July 2009 |
| “POWER TIP #14: SEPIC Converter Makes an Efficient Bias Supply,” by Robert Kollman. Power Management DesignLine.com, July 2009 |
| “Medical trends: A look ahead to the year 2029,” by Doug Rasor and Mir Inram. Electronic Products: Online, August 2009 |
| “BAKER’S BEST: Using an analog filter to inject noise,” by Bonnie Baker. EDN: Print, July 2009 |
| “Signaling rate versus cable length: The CAN-bus timing trade-off,” by Clark Kinnaird. Industrial Control DesignLine.com, July 2009 |
| “Choosing Between Semi-Bridgeless and Interleaved PFC Pre-Regulators,” by Mike O’Loughlin. PET: Print, July 2009 |
| Back to top |
| CUSTOMER SUPPORT CONTACT INFORMATION |
|
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.
|
|
|
Back to top
|
