 |
 |
TI Analog Connection
Your monthly update of new Analog products from TI
September 2006
To subscribe to the TI Analog Connection eNewsletter, please click here.
In
this Issue:
Data Converters
Power Management
Amplifiers
& Linear
Low-Power
RF
Interface
Training and Seminars
Company-Authored Articles in the Media
Customer Support Contact Information
DATA CONVERTERS
14-Bit, 190-MSPS ADC with DDR LVDS Interface: The ADS5546 provides 14-bit, no missing code performance with parallel DDR, LVDS or CMOS interface options and programmable gain up to 6dB for SNR/SFDR trade-offs at high IF. Other features include internal sample/hold, reduced power modes at lower sampling rates and 3.3-V analog and digital supply.
- SNR: 73.2dBFS at 70MHz IF
- SFDR: 87dBc at 70MHz IF, 0dB gain
- Applications: Wireless Communications, Software-Defined Radio, Medical Imaging
12-Bit, Dual-Channel, Parallel-Input DAC: The newest member of the 12-bit, 4-quadrant multiplying DAC family, the DAC7822 offers improved DNL, 10µA at 5-V operation, 0.2-µs settling time, and 10-MHz reference bandwidth; it operates on a 2.5-V to 5.5-V supply range.
- INL: ±1 LSB (max)
- Fast Parallel Interface: 17ns Write Cycle
- Applications: Portable Instrumentation, Multi-Channel Processing, Ultrasound
POWER MANAGEMENT
DC/DC Controller Boost Efficiency: The TPS40140 DC controller turns power supplies in data center and telecommunication equipment into fully scalable, stackable power systems with greater load-handling capability and maximum efficiency. This unique PWM buck controller offers the simplicity of stand-alone dual or two-phase DC controllers with the ability to “stack” multiple devices together, creating a high-density power supply. Generating from 10-A to 320-A output current, true interleaved operation enables maximum efficiency up to 16 phases.
- Selectable Dual-Output or 2-Phase Controller
- Interleaved Operation, Stackable to 16 Phases
- 2-V to 40-V Power Stage Operation Range
- Applications: Servers, Networking Equipment, Power Supply Modules, Video Graphics Cards, Telecommunications Equipment, DC Power Distributed Systems, DDR Memory
1-A, 1-Cell, Li-Ion Charger with Thermal Regulation and LDO Mode: The bq2406x series, highly integrated Li-Ion and Li-Pol linear chargers for portable applications, feature 3-phase battery charging: conditioning, constant or thermally regulated current and constant voltage. Reverse leakage protection prevents battery drainage.
- Input Voltage: 26-V (max) with Overvoltage Protection
- Integrated Power FET and Current Sensor for up to 1-A Charge Applications
- Applications: PDAs, MP3 Players, Smartphones, Digital Cameras
SHA-1/HMAC-Based Security and Authentication IC: The bq26100 provides a method for authenticating battery packs to ensure that only manufacturer-authorized batteries are used in the end application. Security is achieved using the SHA-1 hash function inside the HMAC construction and a unique 128-bit key is stored in each bq26100 device, allowing the host to authenticate each pack.
- Single-Wire SDQ Interface
- Low-Power Operation: Active <50mA, Sleep 8mA (typ)
- Powers Directly from the Communication Bus
- Applications: Cell Phones, MP3 Players, PDAs, Internet Appliances
Li-Ion and Li-Pol Battery Gas Gauge IC: The bq27010 is the newest device in the bqJUNIOR™ series of highly accurate, standalone, single-cell Li-Ion and Li-Pol battery capacity monitoring and reporting devices for portable applications. The device reports available capacity compensated for discharge rate, temperature and age.
- HDQ or I²C Communication
- Five Low-Power Operating Modes
- Applications: Cell Phones, PDAs, MP3 Players, Internet Appliances
800-mA, 3-MHz Synchronous Step-Down Converter: The TPS62350 is a high-frequency synchronous step-down DC/DC converter that operates at 3-MHz fixed switching frequency and supports up to 800-mA load current. Its serial interface is compatible with Fast/Standard and High-Speed mode I²C specifications, allowing transfers up to 3.4Mbps.
- Quiescent Current: 28µA (typ)
- Efficiency: 88% (max)
- Applications: Cell Phones, PDAs, PocketPCs, Digital Cameras, Split-Supply DSPs
200-mA, 40-µA Iq, High PSRR LDO: The TPS799xx family of low-dropout, low-power linear regulators offers excellent AC performance with very low ground current. The devices feature multiple fixed-output versions from 1.2V to 4.5V and adjustable outputs from 1.2V to 6.5V.
- PSRR: 66dB at 1kHz
- Ultra-Low Noise: 29.5µVrms
- Applications: WLAN, Bluetooth, PDA, RF-Sensitive Applications
1-W, 3-kV Isolation, Miniature DC/DC Converters: The new DCH01 series 1-W, DC/DC converters are UL60950-certified with 3kV isolation. These unregulated devices accept a 5-V input and deliver single or dual outputs of 5V, 12V or 15V.
- Operate at up to 78% efficiency
- Input: 5V (4.5V to 5.5V range)
- Applications: Industrial Control and Instrumentation, Test Equipment, Motor Control
6-A, Non-Isolated DC/DC Module: The PTH08T230W is a wide-input, DC/DC module with TurboTrans™ technology and SmartSync. This patented technology provides up to an 8x reduction in required output capacitance while meeting transient load requirements of DSPs, µPs, ASICs and FPGAs. SmartSync synchronizes the switching frequency of multiple modules to a specific frequency.
- Wide Input Voltage: 4.5V to 14V
- Adjustable Output Voltage: 0.7V to 5.5V
- Applications: POL Regulator for DSP, FPGA, ASIC Applications, Communications Systems
Mid-Range Input, Synchronous Buck Controller: The TPS40075 is a high-efficiency, synchronous PWM buck controller with Predictive Gate Drive™. The device is full source/sink with pre-bias startup capability.
- Output as Low as 0.7V with Output Current up to 15A
- On-chip Differential Amplifier Provides Accurate Load Sensing
- High Efficiency Step-Down Conversion: >95% Possible
- Applications: High-Efficiency, Non-Isolated POL Conversion, Power for ASIC, DSP, Logic
AMPLIFIERS & LINEAR
Zero-Crossover, Rail-to-Rail Op Amp: The OPA365 zero-crossover op amp offers an unparalleled combination of precision, low-noise performance and speed for performance signal acquisition systems. Features include a 100dB CMRR, 300ns to 0.01% settling time, 200µV (max) offset voltage and 2.2V to 5.5V single supply operation.
- THD+N: 0.0006%
- Low Noise: 4.5nV/√Hz
- Applications: Test and Measurement, Medical Instrumentation, Audio, Active Filter
2.75-W, Fixed-Gain, Mono, Class-D Audio Power Amp: The TPA203xD1 is a family of fixed-gain, fully differential Class-D amplifiers designed to drive a speaker with a minimum impedance of 4Ω and is available in chip-scale packaging. The device operates from 2.5V to 5.5V, while consuming only 3mA of quiescent current.
- Gain options: 2V/V, 3V/V and 4V/V
- SNR: 97dB (1W into 8Ω)
- Applications: Cell Phones, Wireless Handsets, PDAs, GPS with Audio
Digital TV Tuner IC: The SN761664 is a low-phase-noise synthesized tuner IC. The circuit consists of a PLL synthesizer, three-band local oscillator and mixer, 30-V output tuning amplifier and four NPN band-switch drivers. A 15-bit programmable counter and reference divider are controlled by an I²C bus protocol.
- Tuning Voltage Output: 30V
- Input Frequency: 44 to 863MHz
- Applications: Digital TV, DVD Recorder, Digital CATV, STB, PC TV
AGC Amplifier for TV Tuner: The SN761666 is a low-noise, low-distortion, automatic gain control amplifier for the TV tuner system of a digital TV, CATV or STB. The circuit consists of three stages of controlled-gain amplification, followed by a fixed-gain output amplifier.
- Input Frequency: 30 to 70MHz
- Noise Figure: 7dB
- Applications: Digital TV, DVD Recorder, Digital CATV, STB, PC TV
LOW-POWER RF
RF Transceiver Development Kit: The CC2510Fx and CC2511Fx are complete systems on a chip, incorporating a 2.4 GHz radio transceiver, 8051 MCU and 16 kB Flash memory. The CC2511Fx adds a full-speed USB interface. The Development Kit, which allows users to fully evaluate these devices, contains:
- 2 SmartRF®04 Evaluation Boards
- 2 CC2510EM Evaluation Modules
- 1 CC2511EM USB Dongle
- Antennas and Cables
- Technical documentation and SmartRF®Studio software can be downloaded from the Web. The SmartRF®04 evaluation boards connect to a PC via USB but can also operate stand-alone.
INTERFACE
Digital Audio Interface Transceiver: The DIX4192 is a digital audio interface transceiver (DIX), which includes a digital audio interface receiver and digital audio interface transmitter. The device supports sample rates from 20kHz to 216kHz, and input and output serial ports support standard audio formats.
- +1.8-V Digital Core Supply; +3.3-V Digital I/O Supply
- SPI or I²C Control
- Applications: Digital Mixing Consoles, Broadcast Studio Equipment, High-End A/V Receivers
Dual RS-232 Driver/Receiver with IEC61000-4-2 ESD Protection: The MAX232E is a dual driver/receiver that includes a capacitive voltage generator to supply TIA/RS-232-F voltage levels from a single 5-V supply. Each receiver converts TIA/RS-232-F inputs to 5-V TTL/CMOS levels. The receiver can accept ±30-V inputs.
- Each driver converts TTL/CMOS input levels into TIA/RS-232-F levels
- ESD protection for RS-232 bus pins
- Applications: Digital TV, TIA/RS-232, Battery-Powered Systems, Terminals, Modems and Computers
2.5-V 460-kbps RS-232 Transceiver with IEC 61000-4-2 ESD Protection: The MAX3318E dual-driver, dual-receiver, RS-232-compatible transceiver features auto-power-down plus system-level ESD protection integrated into the chip. Driver output and receiver input are protected to ±15 kV using the IEC 61000-4-2 Air-Gap Discharge method, ±8 kV using the IEC 61000-4-2 Contact Discharge method, and ±15 kV using the Human-Body Model (HBM).
- Auto-Power-Down Plus Option Features Flexible Power-Saving Mode
- Applications: Battery-Powered Systems, PDAs, Cellular Phones, Notebooks, Hand-Held Equipment, and Pagers
8-Bit I²C and SMBus Low-Power I/O Expander with Interrupt and Reset: TI’s PCA6107 8-bit I/O expander has interrupt and reset features along with three address pins. These pins allow the designer to use eight devices on a single I²C bus and thus eliminate I²C address contention.
- Reset Input and Interrupt Output
- Low Power Consumption
- Can Interface with 400kHz Fast I²C
- Applications: Notebook/Sub-Notebook PCs, Telecom, Servers
P1394b Three-Port Cable Transceiver Arbiter: The TSB81BA3D provides the digital and analog transceiver functions needed to implement a three-port node in a cable-based 1394 network. Each cable port incorporates two differential line transceivers, which include circuitry to monitor line conditions as needed for determining connection status, for initialization and arbitration, and for packet reception and transmission.
- Fully Interoperable with Firewire™, i.LINK™ and SB1394™
- Power-Down Conserves Battery-Powered Applications
- Applications: Cable-Based 1394 Network
TRAINING AND SEMINARS
2006/2007 Power Supply Design Seminars: This one-day, highly-technical power supply design seminar will give you an array of advanced new power supply concepts, basic design principles and real-world applications examples. This highly respected series will continue the Unitrode tradition of technical but highly practical presentations. These seminars will take place at multiple locations world-wide beginning in September.
Analog eLab Webcast 9/6/2006. Class-D Audio Power Amplifiers: Operation, Efficiency, and EMC. Class-D audio power amplifiers use switched output devices to produce power with high efficiency. Various techniques are available for controlling switching patterns. A technique called BD modulation permits filter-free operation (operation without an output filter) in many applications, reducing cost and complexity.
The output devices in a Class-D amplifier operate primarily in saturation, with low voltage drops and power dissipation. Efficiency of Class-D amplifiers can be as high as 95%, so Class-D amplifiers can reduce heat generation in high power applications and increase battery life in handheld applications. These advantages contrast sharply with the low-efficiency of Class-AB amplifiers, as much as 25% in average operation.
The broad output spectrum of a Class-D amplifier can produce EMI if it is not properly controlled. Solutions to this sort of problem are often considered black magic. However, it is reasonably easy to achieve EMC through knowledge of EMI filter component characteristics and PCB layout principles.
The discussion will include a special focus on BD modulation as well as elements of EMC testing, filter component characteristics and proper PCB layout. We will conduct several lab sessions, including one in a working EMI chamber to illustrate EMI testing.
3Q Analog Applications Journal: This quarterly collection of application notes is now available online. This quarter’s articles--covering data acquisition, power management, and data transmission--focus on ways devices can be used to address specific design requirements.
New TI Analog Design Center: From online training and Webcasts to device selection, design, simulation and samples, TI's new Analog Design Center provides intuitive tools to help you identify the best solutions for your needs. Easily go from online training or a Webcast to quick search or parametric search. In addition, use TI's selection guides and solutions guides to help you find the optimal devices for your design. Move to a working solution using TI's design tools, reference designs and calculation utilities. Next, perform in-depth behavioral analysis of your design using TINA-TI, a fully functional version of TINA loaded with a library of TI macro models.
Whatever design stage you’re in, TI can help. Visit TI's new Analog Design Center at www.ti.com/analogdesigncenter.
ZigBee™ Training Classes: This hands-on, two-day course in Waltham, MA and Seoul, Korea will provide a solid foundation both in ZigBee protocol and in Z-Stack-based product development. Get face-to-face access to expert assistance and answers that address your specific needs. Even if you are currently just evaluating ZigBee, our training course is designed to get you started the right way.
COMPANY
AUTHORED ARTICLES IN THE MEDIA
“Video
Encoding, SoC Development, and TI's DSP Architecture,” by Mihir
Mody. Video/Imaging DesignLine, May 2006.
“Driving
Higher Power over Ethernet,” by Jean Picard. Electronic
Products, 08/01/06.
“Enable
robust system design using a linear charger,” by Pavan Pudipeddi.
Power Management DesignLine.com, 08/01/06.
“Low-dropout
regulator, SMPS cascade suppress ripple, maintain efficiency,”
by Scot Lester. EDN, 08/03/06.
“Choosing and designing the right filter for an effective data acquisition system,” by Bonnie Baker. Planet Analog, 08/31/06.
CUSTOMER SUPPORT CONTACT INFORMATION
| Product Information Center | - Americas |
| Product Information Center | - Europe, Africa, Middle East |
| Product Information Center | - Asia/Pacific |
| Product Information Center | - Japan |
To subscribe
to the Analog eNewsletter, please click here.
©
2006 Texas Instruments Incorporated, 12500 TI Blvd, Dallas, TX 75243. Read TI's Privacy
Policy.
Technology for Innovators and the black/red banner are trademarks of Texas
Instruments. All other trademarks are the property of their respective
owners.
This e-mail
was sent to %%EMAIL%%. To remove this address from the distribution list
click here.
Or reply to this e-mail placing the word "remove" and %%EMAIL%%
in the subject line.