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TI Analog Connection
Your monthly update of new Analog products from TI
March 2007
To subscribe to the TI Analog Connection eNewsletter, please click here.
POWER MANAGEMENT
SBS-Compliant Gas Gauge IC with Impedance Track™: The bq20z90 v1.10 series is designed for battery-pack or in-system installation and measures and maintains an accurate record of available charge in Li-Ion or Li-polymer batteries used in high-performance analog peripherals.
- <1% error over battery lifetime
- Instant accuracy
- Applications: Notebook computers, medical equipment
Dual-Input Li-Ion Charger: The bq24031 is a bqTINY-III™ series device that integrates charge and system power management capabilities for single-cell Li-Ion applications. The device integrates a 2-A AC power switch, 1.5-A charge FET, USB input current limiting, current sensor, and reverse blocking protection.
- 18-V (max) input voltage
- Supports 2-A total system current
- Applications: Smart phones, PDAs, MP3 players, portable navigation systems, digital cameras
Smart Battery Charger: The bq24721 is a simple to use, high-efficiency synchronous battery pack charger with a high level of integration for portable applications.
- NMOS-NMOS synchronous buck converter with user-selectable 300-kHz or 500-kHz frequency
- 0.4% charge voltage regulation accuracy; 2% accuracy integrated charge
- Applications: 2-, 3-, 4-cell charging applications, notebook computers, medical equipment
Multi-Cell, Synchronous Switch-Mode Battery Charger: The bq24740 is a high-efficiency, synchronous battery charger controller with integrated compensation, offering lower component count for space-constrained, multi-chemistry battery charging applications. Ratiometric charge current and voltage programming allow very high regulation accuracies.
- Fixed 300-kHz sync buck with 6-V gate drive
- Applications: Notebook computers, portable printers, medical equipment, data capture terminals, battery bay chargers
bq24740 Price
(1ku): $2.30
Multi-Cell
Synchronous Switch-Mode Charger: The bq24750 and bq24751
are battery charger controllers with integrated compensation and
system power selector. Dynamic power management and input power limiting
features reduce battery charge current when the input power limit
is reached to avoid overloading the AC adaptor.
- Applications: Notebook computers, portable data-capture terminals, portable printers, battery bay chargers, medical equipment
Over-Voltage Protection IC for Battery Packs: The bq2041x is a secondary over-voltage protection IC for 2-, 3- or 4-cell, in-series Li-Ion/poly battery packs. The device incorporates a high-accuracy precision over-voltage detection circuit, including a programmable delay circuit for over-voltage detection time.
- <2µA power consumption
- Applications: Notebook computers, medical equipment, industrial
800-mA, 3-MHz Synchronous Step-Down Converter with I2C-Compatible Interface: The TPS62350 is an 88%-efficient, high-frequency, synchronous step-down DC/DC converter that operates at a 3-MHz fixed switching frequency.
- Up to 3.4-Mbps transfers
- 2.7-V to 6-V input voltage
- Applications: Cell phones, PDAs, pocket PCs, digital cameras, micro DC/DC converter modules
LCD Bias IC with High-Speed Amp for TV and Monitor Applications: The TPS65165 is a compact LCD bias integrated circuit with three high-speed op amps for gamma correction and/or VCOM supply. The device generates all three voltage rails for TFT-LCD displays and incorporates a high-voltage switch that can be controlled by a logic signal from the timing controller to provide the gate-voltage modulation for VGH.
- 2.5-V to 6-V input range
- Applications: Notebook computers, entry-level LCD TVs, LCD monitors
150-mA RF LDO with Ultra-High PSRR: The TPS717xx family of 150-mA LDOs offers very high PSRR (70dB at 1kHz) while maintaining 50-µA ground current. They are available either in fixed output voltage versions from 0.9V to 3.3V using factory EEPROM programming or adjustable with voltages from 0.9V to 6.2V.
- 1µF ceramic capacitor
- 3% overall accuracy
- Applications: Mobile phones, precision measurement devices, WLAN, Bluetooth™
120-V Boot, 3-A Peak, High-Frequency, High-Side Low-Side Driver: UCC27200 high-frequency N-channel MOSFET drivers have a high-side and low-side configuration with independent inputs to allow usage in half-bridge, two switch-forward, active clamp-converter and full-bride topologies. The devices’ 120-V bootstrap capability ensures safe operation in 48-VDC telecom bus applications or with other intermediate bus voltages.
- Applications: Telecom, datacom, industrial power supplie
DC/DC Modules: The PTH04T220W 16-A, non-isolated DC/DC module is a 2.2-V to 5.5-V wide input range module operating from 2.5-V, 3.3-V or 5-V bus power. The output voltage can be set to any value between 0.69V to 3.6V using a single external resistor. The PTH08T260/261W are second-generation PTH modules with TurboTrans™ technology and provide up to an 8x reduction in required output capacitance while still meeting the stringent transient load requirements of DSPs, ASICs, FPGAs and microprocessors.
- Applications: POL regulators for DSP, FPGA, ASIC and microprocessor applications, broadband, communications, networking, optical
PTH04T220W Price
(1ku): $12.60
PTH08T260/61W Price
(1ku): $6.25
DATA CONVERTERS
12-Bit, 210-MSPS ADC with DDR LVDS and CMOS Interface: The ADS5527 is a high-performance ADC with internal sample/hold and low jitter clock buffer that supports high SNR and high SFDR at high input frequencies. It offers a fully differential LVDS double data rate (DDR) interface while parallel CMOS outputs can also be selected.
- SNR: 70.5dB at 70MHz IF; SFDR: 84dB at 70MHz IF
- Analog and digital supply: 3.3V
- Applications: Wireless communications infrastructure, software-defined radios, test and measurement, medical imaging, radar systems
Lowest Power 16-Bit, 1-MSPS SAR ADCs: The ADS8329 and ADS8330 SAR ADCs feature inherent sample/hold and conversion clock. The ADS829 includes a single unipolar input and the ADS8330 includes a 2-to-1 input multiplexer.
- ±1LSB (typ) INL, 92dB SNR
- -102dB THD
- 102dB SFDR, 15.5mW at 1MSPS and SPI-compatible serial interface
- Applications: Portable medical instruments, multi-channel data acquisition systems, automated test equipment
16-bit, 40-kSPS, Bipolar SAR ADC: The ADS8507 includes both an SPI-compatible serial interface as well as a full 16-bit parallel data bus, allowing simple connectivity to any host device.
- 89.9-dB SNR, -100-dB THD, 102-dB SFDR
- 0 to 40-kSPS sample rate
- Applications: Industrial process control, data acquisition systems, test equipment
16-bit, VOUT DAC with Internal Reference: The DAC8560 is the first member of a new DAC family with an internal 2.5-V reference with 2ppm/ºC (typ) temperature drift and 20-mA sink/source capability.
- 4-LSB (typ) INL
- 0.15nV/s ultra-low glitch energy
- 510µA at 2.7-V micropower operation
- Applications: Process control, data acquisition systems, PC peripherals, portable instrumentation
Chip-Scale Touch Screen Controller with SPI Interface: The TSC2005 is a low-voltage, 4-wire touch screen controller with a 6-kV ESD rating for improved design robustness. Its on-chip pre-processing, averaging and filtering reduces bus activity to lower overall power consumption.
- 1.6-V to 3.6-V single supply operation
- Applications: Mobile phones, PDAs, medical applications, GPS systems
AMPLIFIERS
Single 2:1 High-Speed Video Multiplexer: The OPA875 is a single-channel 2:1 multiplexer that uses only 11mA and provides a gain of +2 video amplifier channel with >425-MHz large-signal bandwidth (4Vpp). With 700-MHz small-signal bandwidth at a gain of +2, the device gives a typical 0.1-dB gain flatness of 250MHz.
- 3100V/µs slew rate
- 4-ns channel switching time
- Applications: Analog routing switchers, high resolution monitors, LCD projector input select, broadcast video processing
Triple, Wideband, Fixed-Gain Video Buffer Amplifier: The OPA3693 offers 650-MHz BW (G = +2), 2500V/µs slew rate and 1.8nV/rtHz low input voltage noise to provide a solution for RGB video applications. It can also drive three parallel converter channel inputs with >200MHz at 2Vpp bandwidth on a single +5-V supply for high-speed signal processing.
- Applications: Broadband video line drivers, ADC buffers, high-frequency active filters, portable instruments
Triple, Fixed-Gain, Rail-to-Rail Op Amp: The OPA3832 is a triple-channel, +2 or ±1 internally fixed gain, rail-to-rail output op amp that consumes only 3.9-mA/ch supply current (on +5V supply). The device provides a low-cost interface for single-supply video DACs where a ground referenced input can be buffered with G = 2 for video line driver applications.
- Applications: Single-supply video line driver, CCD imaging channel, low-power ultrasound, portable consumer electronics
20-W, Stereo BTL, Digital Amplifier Power Stage: The TAS5132 is a stereo PurePath™ digital amp power stage designed to drive 8-Ω speakers at up to 20W per channel.
- 2x20W into 8-Ω at 10% THD+N
- 2x60W into 6-Ω at <0.09% THD+N
- Applications: Digital TV, LCD TV, plasma TV, mini/micro component systems, home theater systems
Triple, Low-Power Video Amplifier: The THS7314 is a 3- to 5-V single supply, 3-channel integrated video buffer that incorporates a 5th-order Butterworth filter for data converter image rejection; it can be used as a DAC reconstruction filter. At 8.5MHz, it is ideal for SDTV video, which includes composite, s-video, Y’U’V’, G’B’R’ and component Y’PB’P’B 480i/576i signals.
- 15-mA total quiescent current on a 3.3-V supply
- Applications: Set-top box video buffering, PVR/DVDR output video buffering, USB/portable video buffering
LOW-POWER RF
Single-Chip, Low-Power RF Transceiver for Narrowband Systems: The CC1020 single-chip FSK/ASK and 00K RF transceiver meets the stringent requirements of multi-channel narrowband applications in the 402- to 470-MHz and 804- to 940-MHz frequency bands. It is suited for systems targeting compliance with EN 300 220, FCC CFR47 part 15 and ARIB STD T-67. With excellent receiver sensitivity and ultra-low power, this chip is the perfect fit for battery-operated industrial systems requiring long range and excellent noise immunity.
- Applications: Wireless AMR, wireless alarm and security, home automation, low-power telemetry, and remote keyless entry
INTERFACE
Low-Power, RS-485 Full-Duplex Drivers/Receivers: The SN65HVD3080E/3083E/3086E devices are balanced drivers and receivers designed for full-duplex, RS-485 or TS-422 data bus networks powered by a 5V supply and fully compliant with the TIA/EIA-485A standard. With controlled bus output transition times, they are suitable for signaling rates from 200kbps to 20Mbps.
- 375µA (typ) enabled mode (IQ)
- 1/8 unit-load—up to 256 nodes per bus
- Applications: Motion control, POS terminals, industrial networks, power inverters, building automation
CLOCKS & TIMERS
Custom-Programmed 3-PLL Clock Synthesizer/Multiplier/Divider: The CDC906 and CDC706 are ROM versions of the CDECE906 and CDCE706 high-performance 2:6 PLL-based clock synthesizer/multiplier/dividers. They can produce an output frequency almost independent from a given input frequency.
- Input frequency can be derived from a LVCMOS, differential input clock or a single crystal with crystal frequencies from 8MHz to 54MHz
- Programmable output slew-rate control helps lower system EMI
- Applications: Wireless base stations, data communications, telecommunications equipment
Rambus™-Compliant XDR™ Clock Generator: The CDCD5704 clock generator provides the necessary clock signals to support an XDR memory subsystem and Redwood logic interface using a reference clock input with or without spread-spectrum modulation.
- 300-MHz to 667-MHz clock source for XDR
- Quad open-drain differential output drivers
- Applications: XDR™ memory subsystem and Redwood logic interface
TEMPERATURE SENSORS
±1ºC (Max) Remote/Local Temperature Sensor: The TMP411 is a remote temperature sensor monitor with a built-in local temperature sensor. It also includes series resistance cancellation and programmable non-ideality factor for improved system accuracy.
- Programmable temp limits
- SMBus/I2C serial interface
- Applications: Servers, motherboards, video cards, base stations, routers
TMP411 Price (1ku): $1.75
NEW LITERATURE
Audio Solutions Guide: TI’s newAudio Solutions Guide can help speed your time-to-market for projects involving flat-panel displays, computing, portable devices, professional audio and more. It includes system block diagrams, product information and benchmarks for analog and digital amplifiers, data converters, DSPs, interface and power management. Download it at www.ti.com/audioguide
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COMPANY AUTHORED ARTICLES IN THE MEDIA
“Technical seminars: Engineers need stories, too! ” by Bonnie Baker. EDN, 2/15/07.
“Minimizing EOS and ESD in High-Performance Serial Buses,” by Burke Henehan. EDN, 2/1/07
“Moving to Smaller Solutions—How many rails do you need?” by Thomas Schaeffner. Power Systems Design, 2/1/07
“Which USB version is right for your application? Part 1,” by Dan Harmon. Planet Analog, 2/14/07.
“Which USB version is right for your application? Part 2,” by Dan Harmon. Planet Analog, 2/22/07.
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