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TI Analog Connection
Your monthly update of new Analog products from TI
December 2006
To subscribe to the TI Analog Connection eNewsletter, please click here.
In
this Issue:
Power Management
Amplifiers
Data
Converters
Interface
Low-Power RF
Clocks & Timers
Training and Seminars
Company-Authored Articles in the Media
Customer Support Contact Information
POWER MANAGEMENT
3-A, 3.3-V to 5.5-V, Non-Isolated DC/DC Module with TurboTrans™: The PTH04T260/261W with TurboTrans technology provides up to an 8x reduction in required output capacitance while still meeting the stringent transient load requirements of DPSs, µPs, ASICs and FPGAs.
- 0.7-V to 3.5-V adjustable output voltage
- 95% efficiency
- Applications: Complex, multi-voltage systems, microprocessors, bus drivers
Single-Channel, 100-mA Power Switch: The TPS2049 100-mA continuous current power switch is designed for low-current, heavy capacitive loads and short circuit applications. It incorporates a 70m-Ω, N-channel MOSFET switch for power-distribution systems requiring multiple power switches in a single package.
- 0.45-A (max) accurate current limit
- 0.6ms (typ) rise time
High-Power 802.3af Power-Over-Ethernet (PoE) PD Controller with Auto-Retry: The TPS2376-H contains all of the features needed to develop a high-power IEEE 802.3af-style powered device. It offers high current limit and increased thermal dissipation, and implements a fully compliant PoE interface while accommodating non-standard implementations.
- High-power 26-W applications
- Integrated 0.6-Ω, 100-V, low side switch
- Applications: VoIP video and speaker phones, WiMAX access points, security cameras, RFID readers
64-Bit, ID with SDQ™ Interface: The bq2022A is a 1-kbit serial EPROM containing a factory-programmed, unique 48-bit identification number, 8-bit CRC generation and 8-bit family code (09h). The device’s SDQ interface requires a single connection and a ground return.
- DATA pin is the sole power source for the device
- Bus architecture allows multiple SDQ devices to be connected to a single host
- Applications: Security encoding, inventory tracking, product revision maintenance, battery-pack ID
Two-Bank LED Drivers with PWM Brightness Control: The TPS75103/5 linear low dropout-matching LED current source is optimized for low-power keypad and navigation pad LED backlighting applications. The device provides a constant current to up to 4 unmatched LEDs organized in two banks of 2 LEDs each in a common-cathode topology.
- Regulated output current with 4% LED-to-LED matching
- Brightness control using PWM signals
- Applications: Keypad and display backlighting, white and color LEDs, cellular handsets, PDAs and smart phones
Shorter, Cap-Free 150-mA, 250-mA, and 400-mA LDO Families: The TPS731xx, TPS732xx and TPS736xx families of LDOs use a new topology: an NMOS pass element in a voltage-follower configuration, which is stable using output capacitors with low ESR or in cap-free operation. It also provides high reverse blockage and ground pin current that is nearly constant over all values of output current.
- Fixed and adjustable output versions
- Applications: Portable/battery-powered equipment, post-regulation for switching supplies, noise-sensitive circuitry such as VCOs, point-of-load regulation for DSPs, FPGAs, ASICs, and microprocessors
150-mA, Low-Noise, LDOs: The LP2985/25/29/30/50 fixed-output version LDOs (2.5V, 2.9V, 3V and 5V) with shutdown are capable of delivering a 150-mA continuous load current.
- 2.5-V to 16-V VIN range
- 0µVrms (300Hz to 50kHz) low noise
- Applications: Cell phones, palmtop and laptop computers, PDAs, digital cameras and camcorders, CD players, MP3 players
AMPLIFIERS
300-W, 110-dB, 95%-Efficient Audio Power Stage: The TAS5261, the highest power single-chip Class D power stage device, delivers 110dB SNR for sound clarity in home audio applications. As part of TI’s PurePath Digital™ power stage product line, it offers excellent power and current handling capability.
- Drives > 300W into a 4-Ω speaker (10% THD+N)
- Can drive 125W, 8Ω at less than 0.09% THD+N with 95% efficiency
- Applications: AV receivers, DVD receivers, mini/micro component systems, home theater systems
Dual, Zero-Crossover, Low Noise Op Amp: Featuring a zero-crossover input stage topology, the dual OPA2365 offers a variety of performance features. Its 300-ns settling time (0.01%) makes it an excellent buffer for fast-settling ADCs.
- THD+N: 0.0006%
- Low noise: 4.5nV/rtH
- Bandwidth: 50MHz; CMRR: 100dB
- Applications: Signal conditioning, data acquisition, process control, active filters, test equipment, audio, wideband amplifiers
Quad, Precision, 3µA IQ, 90kHz Op Amp: The OPA4379 quad, high-precision, low-power RRIO op amp is suitable for a wide variety of portable and hand-held applications.
- 80nV/rtHz low noise
- 90-kHz bandwidth
- Applications: Battery-powered instruments, portable devices, medical instruments, handheld test equipment
1.25-W, Mono, Class-AB Audio Power Amp: The TPA6205A1 fully differential amplifier is designed to drive a speaker down to 8-Ω impedance operating from 2.5V to 5.5V while consuming only 1.7mA of quiescent current. Its shutdown logic is 1.8V-compatible, allowing a seamless interface to true 1.8-V I/O drivers on the newest ASICs and DSPs.
- SNR: 104dB
- THD+N at 1kHz: 0.06%
- Applications: Wireless handsets, PDAs, mobile devices
DATA CONVERTERS
16-Bit, 250-kSPS, 6-Channel SAR ADC: The ADS8365 features six independent channels to allow high throughput and simultaneous sampling in multi-axis positioning systems, motor control and optical networking applications. The separate 2.7- to 5.5-V digital interface voltage and parallel interface makes it compatible with most FPGAs and processors.
- ±4LSB (max) INL; ±1.5LSB (typ) DNL
- Factor of 2 lower noise at 60µV
- THD is -94dB; SFDR is 95dB at 50kHz input
- Applications: Motor control, multi-axis positioning systems, 3-phase power control
16-Bit, Low-Power, Stereo Audio Codec for Portable Applications: Designed for portable, digital audio applications, the PCM3793 integrates a stereo digital speaker amp, headphone amp, microphone boost amp and bias, analog mixing, sound effect and auto level control.
- Sample rates up to 50kHz
- Accepts right-justified, left-justified, I2S and DSP formats for easy interface
- Applications: Portable audio players, cell phones, video camcorders, digital still cameras, PMP/DMB
INTERFACE
QVGA-VGA Serial FlatLinkTM 3G Receiver: Designed for portable video display, such as a clamshell phone, the SN65LVDS304 receiver deserializes FlatLink™ 3G-compliant serial input data to 27 parallel data outputs.
- 24-bit RGB data
- Up to 1755mbit/s throughput
- Application: Small, low-emission interface between graphics controller and LCD display, mobile phones, smart phones, portable multimedia players
Gigbit Ethernet SerDes Transceiver: The TLK1211 is the industry’s first receiver-only M-LVDS 0.6-Gbps to 1.3-Gbps serializer/deserializer device. Features include <200mW power consumption (1.25Gbps), fast relock times suitable for PON, and comprehensive, built-in testability.
- IEEE 1149.1 JTAG support
- 2.5-V supply voltage
8-Bit, I²C and SMBus I/O Expanders: The PCA9534/A, PCA9538, and PCA9554A series of devices provide general-purpose remote I/O expansion for most microcontroller families via the I²C interface. They use the NiPdAu finish, industry-preferred for lead-free devices.
- Low power consumption
- I/O port can be used as input or output and can interface with 400-kHz I²C bus
LOW-POWER RF
Multi-Channel RF Transceiver: The CC2500 is a highly integrated multi-channel RF transceiver designed for low-power wireless applications in the 2.4-GHz Industrial Scientific Medical (ISM) band. It has excellent radio performance and requires few external components.
- Applications: Wireless game controllers, wireless keyboard/mouse, consumer electronics. wireless audio, sports equipment
CLOCKS AND TIMERS
Single and Dual Precision Timers: The NA555/NA556 precision timers produce accurate time delays or oscillations. Each can be operated in monostable or astable modes.
- Adjustable timing (microseconds to hours)
- Adjustable duty cycle
- TTL-compatible output can source up to 200mA or 150mA
TRAINING AND SEMINARS
TI Developer Conference 2007: Register for the TI Developer Conference Worldwide 2007 and attend three days of technical sessions, interactive workshops and valuable networking with the people whose vision and products can help you shape the future of signal processing. Register today and save $500 off the on-site price!
EMI/RFI Webcast Now Available On-Demand: The recent Webcast “EMI/RFI as Seen by Analog ICs” is now available for on-demand viewing. All analog circuits can be sensitive to ElectroMagnetic Interference (EMI). Understanding how this energy interacts with analog ICs can help identify EMI’s impact on circuit performance and provide insight for developing techniques to measure how well design changes modify and minimize the impact of the EMI energy. With simple test techniques, it is possible to get a relative indication of circuit sensitivity to EMI.
ECN’s Design Network Features Design Information by TI Engineers: ECN’s Design Network Archives contain three audio/visual presentations for designers working in the industrial end-equipment space. Jinrong Qian, applications manager at TI, walks the designer through the battery selection process for portable power applications. Bonnie Baker, senior applications engineer at TI, provides two presentations covering analog filtering techniques: 1) How do you know if you need an analog filter in your circuit; and, 2) How to get the optimal performance out of an analog filter and better overall noise performance between an operational amplifier and data converter. To view any of all of these presentations, click here.
COMPANY
AUTHORED ARTICLES IN THE MEDIA
“Infrastructure
OEMs must minimize the cost of WiMAX base stations in order to compete
and profit,” Nicolas Salamina and Ramesh Kuma. The Basestation
E-newsletter, November 2006.
“Analysis
and measurement of intrinsic noise in op amp circuits—Part 3: Resistor
noise and sample calculations,” by Art Kay. AnalogZONE,
November 2006.
“Controlling
power and cost for multiple LEDs,” by Brant Johnson. Power
Management DesignLine, November 2006.
“Digital
control measures in-system response,” by Mark Hagen and Dave
Freeman. Power Electronics Technology, November 2006.
“How
does battery management electronics improve battery safety,”
by Jinrong Qian and Sihua Wen. Power Management DesignLine, November
2006.
“A
comparison of line drivers and line receiver varieties,” by
David Mulcahy. Planet Analog, November 2006.
“Flexible
up-conversion architectures satisfy global wireless standards,”
by Russell Hoppenstein. RF DesignLine, November 2006.
“Transition
mode PFC increases efficiency to help meet the 80+ requirements,”
by Mike O'Loughlin. Published by Planet Analog, November 2006.
CUSTOMER SUPPORT CONTACT INFORMATION
| Product Information Center | - Americas |
| Product Information Center | - Europe, Africa, Middle East |
| Product Information Center | - Asia/Pacific |
| Product Information Center | - Japan |
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