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New
High-Performance Analog Showcase
from Texas Instruments
April 2005
To subscribe to the Analog eNewsletter, please click here.
In
this Issue:
Amplifiers
Data Converters
Power Management
RF
Clocks and Timers
Analog Switches
DSP App Report: Optimization Techniques
for Video Encoder
Analog Training
Company-Authored Articles in the Media
Customer Support Contact Information
AMPLIFIERS
High-Performance, Stereo, Digital Amplifier Power Stages: The TAS5142 (100 W/Ch) and TAS5152 (125 W/Ch) digital amplifier power stages with an improved protection system are capable of driving a 4-Ω bridge-tied load with low integrated noise at the output.
- Current Limiting Prevents Unwanted Over-Current Shutdowns
- Power-On Reset Control Eliminates Sequence Power Supplies
- High Efficiency, Low On-Resistance FETs
- Applications: Mini/Micro Audio Systems, DVD Receiver, Home Theater
TAS5142: Price (1 ku) $3.90
TAS5152: Price (1 ku) $4.30
Dual-Port, Low-Power xDSL Line Driver Amp: The THS6184 dual-port (4 amplifier) current-feedback, differential line driver amp for xDSL systems features low -74 dBc (ADSL) MTPR distortion, >410 mA into 25-Ω load output current drive, and wide output swing of 44 Vpp with a 200-Ω differential load (±12-V supply).
- Low Iq: 4.2/3.2/2.15 mA/amp
- Very Low Noise: 2.9 nV/rtHz
- Applications: ADSL/ADSL2+/ADSL2++, Medical Imaging, Ultrasound
DATA CONVERTERS
True 16-bit, 2.5-MSPS ΔΣ ADC: The ADS1602 is a high-speed, high-precision, ΔΣ ADC with on-chip digital filter. Optimized for power and performance, it dissipates only 530 mW while providing a full-scale ±3V differential input range.
- SNR: 91 dB at fIN = 100 kHz, -1 dBFS
- THD: -101 dB at fIN – 100 kHz, -6 dBFS
- SFDR: 103 dB at fIN = 100 kHz, -6 dBFS
- Applications: Instrumentation, ATE, Sonar, Medical Imaging, Data Acquisition
High-Performance, 14-Bit, 80-MSPS ADC: The ADS5542 is a 14-bit, 80-MSPS ADC complete with S/H and internal reference with operation from a 3.3-V single supply. Its parallel CMOS-compatible output ensures seamless interfacing with common logic. A member of the ADS5500 family, the ADS5542 allows for pin-compatible bit/speed upgrades.
- High SNR: 72.9 dBFS at 100 MHz fIN
- High SFDR: 88 dBc at 100 MHz fIN
- Low Power: 674 mW (total power)
- Applications: Wireless Comms, Test and Measurement, Video Imaging, MRI
14-bit, 65-MSPS Dual ADC: Designed for high dynamic performance in a small space, the dual-channel ADS5553 features 0.9-W power at 3.3-V single-supply voltage. An external reference option can support the accuracy and low drift requirements of various applications; parallel outputs are CMOS-compatible.
- High SNR: 74 dBFs at 70 MHz fIN
- High SFDR: 84 dBc at 70 MHz fIN
- 2.3 Vpp Differential Input Voltage
- Applications: Wireless Communications, Test and Measurement, Video and Imaging
Dual, 10-Bit, 200-MSPS DAC: The DAC5652 is a dual, 10-bit, 200-MSPS DAC with on-chip Vref that offers exceptional dynamic performance, tight gain and offset matching characteristics suitable for I/Q baseband or direct IF applications. Additionally, the device can accept multiplexed data in the interleaved mode.
- Single Supply: 3 V to 3.6 V
- High SFDR: 80 dBc at 5 MHz
- Applications: Basestations, Medical/Test Instrumentation, Cable Modem Termination
POWER MANAGEMENT
Triple Power Supply IC for Spartan-3™ FPGA: A complete power management solution for FPGA, DSP and other multi-supply applications, the TPS75003 integrates two 95% efficient, 3-A buck controllers, one 300-mA LDO and other options for maximum flexibility. The device is tested and endorsed by Xilinx for Spartan-3, Spartan-3E and Spartan-3L FPGAs.
- Adjustable Output Voltages on All Channels
- Input Voltage Range: 2.2-V to 6.5-V
- Independent Soft-Start for Each Supply
- Applications: FPGA/DSP/ASIC Supplies, Set-Top Box, Plasma TV Display Panels
1.5-A Peak Boost, Buck, Inverting Switching Regulator: The MC33063A and MC34063A are versatile switching regulators that can accept a wide input voltage range from 3 V to 40 V and be used to implement basic step-up, step-down, or inverting topologies with a minimum of external components.
- High Output Switch Current: Up to 1.5 A
- Adjustable Output Voltage
- Applications: Consumer Electronics, Power Supply Management, Instrumentation and Medical Equipment
MC33063: Price (1 ku) $0.47
30-W, Isolated DC/DC Converters: The PTB48560x, a 30-W rated DC/DC converter operating over a 36-V to 75-V input voltage range, features adjustable output voltage and Auto-Track™ power-up sequencing, which allows the converter to simultaneously power-up with any other downstream, non-isolated, Auto-Track compliant module. Other features include smart-sense remote sensing, over-current protection and efficiencies up to 87%.
- PTB48560A: 3.6 V to 5.5 V Vout; 6 A Iout
- PTB4856B: 1.8 V to 3.6 V Vout; 8 A Iout
- PTB4856C: 9 V to 13.2 V Vout; 2.5 A Iout
- Applications: Telecom and Computing Environments with Distributed Power, Power Sequencing
60-A, 3.3/5-V Input, Non-Isolated, Wide-Output Adjust Power Modules : Providing up to 96% (3 V) efficiency, and using the newest multi-phase switched-mode topology, the PTH04040W features 60-A output current and Auto-Track™ sequencing for DC/DC conversion.
- Input Voltage Range: 2.95 V to 5.5 V
- Output Voltage Range: 0.8 V to 3.6 V
- Output Current: 60A
- Applications: High-end Network Cards in Switches/Routers, Test and Measurement
3.3-Vin/18-A Vertical SIP Point-of-Load Module: The PTV03020W is a ready-to-use, non-isolated power module and part of a new class of complete DC/DC switching regulators from TI. Auto-Track™ sequencing simplifies the task of supply voltage sequencing during power up or power down.
- Input Voltage Range: 2.9 V to 3.6 V
- Output Voltage Range: 0.8 V to 2.5 V
- Pre-Bias Startup Capability
- Applications: Industrial Test and Measurement, Medical and Battery-Operated Equipment
5-Vin, 8-A, Vertical SIP Point-of-Load Module: The PTV05010W is a non-isolated, point-of-load module featuring Auto-Track™ sequencing and pre-bias start-up capability. POLA™ Alliance-compatible design assures the security of multiple sourcing.
- Input Voltage Range: 4.5 V to 5.5 V
- Output Voltage Range: 0.8 V to 3.3 V
- Efficiency up to 90%
- Applications: Industrial, Test and Measurement, Distributed Power, Battery-operated Equipment
Current-Limited, Power-Distribution and USB Power Switch: Designed for applications where heavy capacitive loads and short circuits are likely to be encountered, the TPS2064 features 70 mΩ, N-channel MOSFET power switches for power distribution systems that require multiple switches in a single package.
- Continuous Current: 1.5 A
- Thermal and Short-Circuit Protection
- Accurate Current Limit: 1.6 A (min), 2.6 A (max)
- Applications: Heavy Capacitive Loads, Industrial Power Switching, USB 2.0 or 1.1 Standard
802.3af PoE PD Controllers with Auto-Retry: The TPS2375-1 and TPS2377D-1 ICs contain all the features required to develop an IEEE 802.3af-compliant powered device, including 100-V ratings and a true open-drain power good function. TPS2375-1 has 802.3af-compliant UVLO limits, while TPS2377-1 has legacy UVLO limits.
- Integrated 0.6Ω, 100-V, Low-Side Switch
- 15 kV System-Level ESD Capability
- Applications: VoIP Phones, WLAN Access Points, Security Cameras/Terminals
TPS2377: Price (1 ku) $1.25
Quad Ethernet Power Sourcing Equipment Power Manager: The TPS2384 is a quad smart power switch that is compliant to the Power-over-Ethernet (PoE) IEEE 802.3aF standard. Four 15-bit ADCs are used to measure port voltage, current and die temp, making PSE solution development simple and robust.
- Single Supply: +48 V
- Auto, Semi-Auto and Manual Modes
- High Speed I2C Interface: 400 kHz
- Applications: Ethernet Switches, Mid-Span, SOHO Hubs, PSE Injectors
14-A, DC/DC Converter for Pre-Biased Loads: The TPS54073 is a 2.2-V to 4-V input DC/DC converter with integrated FETS that steps the voltage down as low as 0.9 V. It delivers up to 14 A output current at full temperature and supports 18 A peak output current.
- Wide PWM frequency range: 350 kHz, 550 kHz fixed; 280-700 kHz adjustable
- Two 8-mΩ MOSFET Switches
- Applications: Telecom/Datacom, Point-of-Load Regulation, Distributed Power Systems
Bias Power Supply for TV and Monitor Panels: The TPS65160 is a very compact power supply solution that provides all four voltages required by thin film transistor (TFT) LCD panels. The device incorporates a gate drive signal to control an isolation MOSFET in series with Vs or VGH.
- Input Voltage Range: 8 V to 14 V
- Vs Output Voltage Range up to 20 V
- 1% Accurate Boost Converter with 2.8 A Switch Current
- Applications: TFT LCD TV, TFT LCD Monitor
RF
Single-Chip Multiband RF Transmitter: The TRF4903 is a single-chip, multichannel transmitter intended for digital modulation applications in the USA and Europe supporting 315, 433, 868 and 915 MHz ISM bands. It operates in FSK or OOK modulation schemes with programmable frequencies to establish a half-duplex, directional RF link.
- Ultra-low Power: 35 mA (typ) at 2.7 V at 8 dBm TX Power
- Operation: 2.2-V to 3.6-V
- Applications: Wireless Metering, HVAC, Industrial Automation, Home Security
Digital Baseband ASIC for Dolphin Chipset: The DBB03 is a baseband ASIC for the Dolphin reference design with firmware residing in its ROM-based program memory. It readily interfaces with the TRF6903 single-chip RF transceiver to generate a frequency hopping wireless UART.
- Low Voltage Range: 1.8 V to 3.6 V
- Ultra-low Power Consumption: 160 µA at 1 MHz, 2.2 V (active mode)
- Simple UART Interface to External Host/System µController
- Applications: Wireless AMR/HVAC, Industrial Automation
CLOCKS & TIMERS
25-Bit Configurable Buffered Register: The SN74SSTU32864D buffered register for DDR2 RDIMM applications is configurable as 25-bit 1:1 or 14-bit 1:2, and designed for 1.7-V to 1.9-V Vcc operation.
- Output Edge-Control Circuitry Minimizes Switching Noise in an Unterminated Line.
- Differential Clock Inputs
- Applications: DDR2-400/533 DIMM Applications
ANALOG SWITCHES
10-Ω Dual SPST Analog Switch: The TS5A2066 is specifically designed to route and isolate analog signals in space-constrained end equipment. Each SPST channel offers low THD of only 0.01% and low off isolation of -68 dB, making it ideal for switching audio signals in home audio/video equipment.
- Low ON-State Resistance: 7.5 Ω (typ)
- Applications: Portable (PDAs, Cell Phones) and Other Hand-Held Products Where Analog Signals Need to be Rerouted.
0.9-Ω SPDT Analog Switch 5 V/3.3 V Single-Channel 2:1 Multiplexer/Demultiplexer: The TS5A3154 switch has specified make-before-break functionality and the convenience of an enable pin. Low off isolation and cross talk enables it to be used for signal routing and isolation in analog switching applications without affecting adjacent channels.
- Low THD: 0.004%
- Bandwidth: 100 MHz
- Applications: Cell Phones, Hand-Held Audio Electronics, Portable Instrumentation
DSP APP REPORT: OPTIMIZATION TECHNIQUES FOR VIDEO ENCODER
Application Report: This application report describes optimization techniques for a general video encoder on TI’s DM64x/C64x™ DSPs. The DM64x/C64x DSP is a high-performance digital media processor with two-level memory/cache hierarchy and very-long-instruction-word (VLIW) architecture. Download this app note for details on algorithm/system optimization, memory buffering optimization, enhanced direct memory access (EDMA) and more.
ANALOG TRAINING
Analog eLab Webcast 5/11/2005: Precision Signal Conditioning for ΔΣ Data Converter Systems: ΔΣ data converters are precise and accurate, but only if placed into the right environment. To fully exploit their true potential within a system, careful consideration should be given to the input signal conditioning circuit, reference voltage source and design trade-offs influencing power, speed and accuracy.
Anticipate a full exploration of the precision and accuracy characteristics of ΔΣ data converters, the filtering and amplification required to realize their optimal performance and discussions on when they may not need any signal conditioning at all. Register now.
COMPANY
AUTHORED ARTICLES IN THE MEDIA
"DC/DC
Power Conversion in Portable Battery-Operated Applications" by
Patrick Heyer. DigiTimes (Taiwan), March 2005
"Active
Filters Using Current-Feedback Amplifiers" by Randy Stephens.
Mundo Electronico (Spain), March 2005.
"Power
Supply Design: Are Old 'Rules of Thumb' Still Valid for Today's Voltage
Mode Control Designs?" by Dirk Gehrke and Rais Miftakhutdinov.
Power Electronics Europe, March 2005.
"Power
Chips Benefit from Final Test-Trim" by John Constantopoulos and
Walter Nadler. Power Electronics Technology, March 2005.
"Validate
Spice models before use" by Ron Mancini. EDN, 3/31/05.
"MOSFET
Driver IC Considerations" by Steve Mappus. Electronic Products,
March 2005.
"HOW-TO:
Overcoming the Duty Cycle Limits of the Two-Switch Forward."
by John Bottrill. EETimes.com, 3/14/05.
"M-LVDS
Receivers Keep It Safe" by Jim Dietz. Planet Analog.com, 3/31/05.
CUSTOMER SUPPORT CONTACT INFORMATION
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