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TI Analog Connection
Your monthly update of new Analog products from TI
January 2008
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DATA CONVERTERS
Ultra-High Performance, Low-Power, 24-Bit ADC: The ADS1281 offers a single-chip, ultra-high-performance ADC option for applications such as seismic monitoring and energy exploration that require extremely high resolution and linearity sensitivity. The device features 130dB SNR (250SPS) and -122dB THD while consuming only 12mW of power.
- 0.7-ppm (typ) INL
- Small 24-lead TSSOP package
- Applications: Seismic/energy exploration, earthquake and building monitors, scientific instrumentation
16-Bit, Quad-Channel, Ultra-Low Glitch VOUT DAC: The DAC8564 and DAC8565 multi-channel, multi-purpose DACs feature an internal 2.5V, 2ppm/ºC temperature drift reference with 0.004% initial accuracy. The DAC8564 offers binary input and power-on-reset to zero, while the DAC8565 has a programmable POR to either zero or mid-scale resulting in a data format that is either binary or 2’s complement.
- 4-LSB (typ) INL
- 0.15nV-s glitch energy
- Applications: Process control, data acquisition systems, PC peripherals, portable instruments
Dual, 10-Bit, 65-MSPS ADC with Parallel CMOS Interface: The ADS5237 is a dual, high-speed, high dynamic range ADC that includes a high-bandwidth sample-and-hold amplifier that gives excellent spurious performance up to and beyond the Nyquist rate. The device employs digital error correction techniques to provide excellent differential linearity for demanding imaging applications.
- 61.7dB SNR at fIN = 5MHz; 86dB SFDR at fIN = 5MHz
- Applications: Mid-range and high-end ultrasound systems, industrial imaging, communications IF processing, base stations, video and CCD digitizing
Dual, 11-Bit, 125-MSPS ADC: The ADS62P15 is a high-performance ADC with selectable parallel DDR LVDS or CMOS outputs. The device consumes 370mW/channel in CMOS mode, which makes it one of the lowest power ADCs in its speed grade, giving high channel-density systems improved battery life and thermal performance.
- 67.1-dB SNR and 85dB SFDR at fIN = 70MHz
- 3.5-dB coarse gain and up to 6-dB programmable fine gain
- Applications: Wireless communications, point-to-point microwave, satellite modems, radar and guidance
16-Bit, 1-GSPS, 2x-4x Interpolating, Dual-Channel DAC: The DAC5682Z provides the industry’s highest input data rate for a 16-bit DAC at 1GSPS. With the data input internally interleaved and with an 8-sample FIFO, the device can support up to 500MSPS of data to each DAC.
- Onboard 2x and 4x FIR filters support interpolation in half-rate or quarter-rate data input mode
- Optional Fs/4 coarse mixer in complex mode provides coarse frequency up-conversion
- Applications: WiBro/WiMAX/HSDPA/4G transmitters, point-to-point microwave, satellite modems, wideband test equipment, radar exciter
AMPLIFIERS
150-MHz Variable Gain Amplifier: The VCA820 is a wideband continuously variable gain amplifier with linear in dB gain adjustment control for >40-dB range. Its high slew rate (1700V/µs) ensures either lower distortion for frequency domain-oriented applications or high fidelity pulse response for time domain-oriented applications.
- 150-MHz small signal bandwidth (G = +10V/V); 0.1-dB gain flatness to 137MHz (G = +10V/V)
- 20dB ±0.4dB high gain accuracy and 7-V to 12-V supply voltage
- Applications: Differential line receivers, differential equalizers, pulse amplitude compensation, variable attenuator, AGC receiver with RSSI
VCA820 Price (1ku): $3.45
2-Channel, 125-W, Digital Amplifier Power Stage: The TAS5352 is a high-performance, stereo PurePath Digital™ digital amplifier power stage in the Boston power stage family. The device is capable of continuously driving two 4-Ω loads up to 125W at 10% THD+N; efficiency is greater than 90%.
- Programmable over-current detector allows use of low-cost inductors in the demodulation output filter
- Applications: DVD receivers, home theaters in a box, mini/micro component systems
TAS5352 Price (1ku): $3.90
FM Stereo Radio with Transmitter: The SN761633 is an FM radio receiver and transmitter IC for portable audio players.
- 76- to 108-MHz frequency range
- RF AGC, seek tuning, and pilot cancel
- 6th-order 15-kHz LPF
- Applications: MP3 players, portable media players, personal navigation devices
SN761633 Price (1ku): $2.50
POWER MANAGEMENT
Li+ Charger Front End Protection IC: The bq2431x and bq2430x are highly integrated circuits providing protection to Li-ion batteries from failures of the charging circuit. The IC continuously monitors input voltage, input current and battery voltage. It also monitors its own die temperature and switches off it if becomes too hot.
- 30-V (max) input voltage; input current limit adjustable up to 1.5A
- Applications: Mobile phones, Bluetooth™ headsets, portable navigation devices, portable media players
16-Channel LED Driver with 7-Bit Dot Correction: The TLC5942 is a 16-channel, constant-current sink LED driver. Each channel has an individually adjustable 4096-step grayscale PWM brightness control and a 128-step constant-current sink (dot correction).
- Single external resistor sets the maximum current value for all 16 channels
- 50mA constant current/channel
- 1.5% (typ) channel-to-channel accuracy; 3% (typ) device-to-device accuracy
- Applications: Mono/multi/full-color LED display, LED signboards, display backlight
TLC5942 Price (1ku): $1.75
High-Frequency, 4-A Sink Synchronous MOSFET Driver: The TPS28225, a high-speed driver for N-channel complimentary driven power MOSFETs with adaptive dead-time control, is optimized for use in a variety of high-current one- and multi-phase DC/DC converters.
- Up to 8.8-V gate drive voltage
- 14-ns adaptive dead-time control; 14-ns propagation delays
- Applications: Multi-phase DC-to-DC converters with analog or digital control, desktop and server VRMs and EVRDs, portable/notebook regulators, synchronous rectification for isolated power supplies
5-Channel, LCD Bias Power IC for LCD TVs: The TPS65167/A is a compact power supply solution that provides all voltages required by a large-size LCD panel/monitor running from a 12-V supply rail. The device generates all three voltage rails for the TFT LCD bias (Vs, VGL and VGH).
- Step-down converter and LDO controller provide two logic voltage rails
- 6-V to 14-V input voltage range
- Applications: Entry-level LCD TVs, LCD monitors
Dual Channel, Step-Down SWIFT™ DC/DC Converter: The TPS54283 (300kHz) and TPS54286 (600kHz) are dual output, non-synchronous step-down converters capable of supporting 2-A output and operating from a 4.5-V to 28-V input supply.
- Adjustable output voltages down to 0.8V
- Two 85-mΩ, N-channel high-side MOSFETs
- Applications: Set top boxes, digital TVs, cable modems, portable DVD players
LOW-POWER RF
Robust RF Transceiver for IEEE802.15.4/ZigBee®: The CC2520 is TI's second-generation ZigBee/IEEE 802.15.4 RF transceiver for the 2.4-GHz unlicensed ISM band. This chip enables industrial-grade applications by offering state-of-the-art noise immunity, excellent link budget, operation up to 125° and low-voltage operation.
- Provides extensive hardware support for packet handling, data buffering, burst transmissions, data encryption, data authentication, clear channel assessment, link quality indication and packet timing information
- Reduces the load on the host controller
- Excellent receiver sensitivity (–96.8 dBm), selectivity and blocking performance
- RoHS-compliant 5mm x 5mm RHD (S-PQFP-N28) package
CC2520 Price (1ku): $2.75
CLOCKS
1.8-V, Programmable VCXO, 4-PLL Clock Synthesizer: The CDCE949 and CDCEL949 are modular, PLL-based, high-performance programmable clock synthesizers with 3.3-V, 2.5-V and 1.8-V I/Os. They generate up to 9 output clocks at different frequencies from a single input frequency.
- Each output can be programmed in-system for any clock frequency up to 230MHz, using up to four independent configurable PLLs
- VCXO input with ±150ppm pulling range
- Nine low-jitter, low-skew outputs
- Applications: Digital media systems, STB/TV/phone, streaming media, GPS receivers, portable media, printers, media processors
CDCE949 Price (1ku): $2.20
DSP
10x Performance Improvement for Transcoding Applications: The new TMS320DM6467 DaVinci™ processor is designed for HD video transcoding, performing simultaneous, multi-format HD encode, decode and transcoding up to H.264 HP@L4. Order samples now.
NEW LITERATURE
ZigBee Overview (2.2MB pdf): A Zigbee wireless networking overview brochure is now available for download.
Videocast: High-Side, Current/Power Monitor. Features the INA209, a high-side current shunt and power monitor with an I2C interface.
Videocast: High-Precision Voltage Reference Family. Features the REF50xx family of low-noise (3µVpp/V), low-drift (3ppm/ºC) and high accuracy (0.05%) voltage references.
TRAINING AND SEMINARS
TI Developer Conference 2008: Choose from more than 100 technical sessions and hands-on workshops in audio, industrial, software and trends, communications, lighting and displays, tools and embedded software, education, medical, and video and imaging. Register by January 31, 2008 to save $600 off the on-site registration price. Will be held in Dallas, Texas February 26-28.
Low-Power RF and ZigBee® Networking Workshop: This hands-on, 3-day course will provide a solid foundation in RF capabilities, MAC layer communications, OSAL/HAL usage, ZigBee networking and Z-Stack-based product development. To be held in select cities in the U.S. and Europe.
COMPANY-AUTHORED ARTICLES IN THE MEDIA
“DAVE'S 2 CENTS: Predicting Predictions,” by Dave Freeman. Portable Design, September 2007.
“Op amp stability: 10 of 15: Cap Load Stability: Riso w/Dual Feedback,” by Tim Green. Analog ZONE.com, September 2007.
“Switcher adds programmable-PWM-duty-cycle clamp,” by Mike O'Loughlin. EDN, September 2007.
“Using high-IF sampling A/D converters beyond baseband frequencies,” by Chuck Sanna. Planet Analog.com, September 2007.
“Thin is In – Making Small, Highly Efficient Power Supplies,” by Bob Neidorff. EDN, September 2007.
“What's the best DC/DC topology for your Li-ion powered portable?,” by Michael Day & Bill Johns. Power Management DesignLine.com, September 2007.
“Choosing ADCs for Diversity and MIMO Receivers,” by Zatil Hamid. Electronic Products, September 2007.
“Ramp Discharge Dead Time Control, or How to Set Maximum Duty Cycle,” by John Bottrill. EDN, September 2007.
CUSTOMER SUPPORT CONTACT INFORMATION
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