TI Analog Connection
Your monthly update of new Analog products from TI
December 2007

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In this Issue: Data Converters Amplifiers Power Management Low-Power RF Interface Clocks and Timers Temperature Sensors Analog Switches DSP New Literature Training and Seminars Tools Company-Authored Articles in the Media Customer Support Contact Information

• Supports sine, LVCMOS, LVPECL, LVDS clock inputs and amplitude down to 400mV_PP
• 3.3-V operation
• Applications: Wireless communications, medical imaging, software-defined radio, portable test, high-end video, radar guidance

• Output is unipolar with a programmable range from 0V to +1.25V (using a 1.25-V reference) to 0V to +5V (using a 5-V reference)
• On-chip output buffer amp with rail-to-rail operation
• Applications: Automatic test equipment, industrial process control, data acquisition systems, general-purpose instrumentation, medical equipment

1.1-nV/rtHz Noise, Low-Power, Precision Op Amp: The OPA211 achieves very low 1.1-nV/rtHz noise density with a supply current of only 3.6mA. The rail-to-rail output voltage swing maximizes dynamic range. For precision data acquisition applications, the OPA211 provides 0.7-µs settling time to 16-bit accuracy, even for 10-V output swings.

• 45MHz at G = 1 gain bandwidth
• -136dB THD+N, 125µV (max) offset voltage
• 4.5-mA (max) power consumption
• Applications: PLL loop filters, pro audio preamps, instrumentation, medical

OPA211 Price (1ku): $3.45

1-µA (max) I_Q, Zero-Crossover, Single-Supply Op Amp: The OPA369, the industry’s lowest power, zero-crossover op amp, features a unique single-input stage architecture that delivers outstanding 750-µV offset voltage over the entire rail-to-rail input range and a 100-dB (min) CMRR, thereby maximizing the useable input dynamic range for low supply voltage applications.

• 120-nV/rtHz low noise
• 12-kHz on 1-µA gain bandwidth
• Applications: Portable medical devices, portable instrumentation, portable consumer devices, handheld test equipment, sensor signal conditioning

OPA369 Price (1ku): $0.80 (single)

150-MHz Variable Gain Amp: The VCA822 is a DC-coupled, wideband, linear in V/V, continuously variable, voltage-controlled gain amplifier. It provides a differential input to single-ended conversion with a high-impedance gain control input used to vary the gain down 40dB from the nominal maximum gain set by the gain resistor (RG) and feedback resistor (RF).

• 150-MHz (G = +10V/V) small signal bandwidth
• 0.1-dB gain flatness to 28MHz (G = +10V/V)
  Applications: Differential line receiver and equalizers, pulse amplitude attenuation, variable attenuators, voltage-tunable active filters, linear V/V gain control

VCA822 Price (1ku):$3.45

Very Low-Noise, RRO Op Amp: The TL97x family of op amps operates as low as ±1.35V, has rail-to-rail output signal swing and is available in single, dual and quad versions.

• 0.003% at F = 1-kHz THD and 4nV/rtHz equivalent input voltage noise
• 2.7-V to 12-V wide VCC range, 12-MHz gain bandwidth and 5V/µs slew rate
• Applications: Portable and professional audio equipment, cell phones, instrumentation and sensor applications

TL972 Price (1ku): $0.40

• I²C communication; temperature, voltage and current reporting; internal user EEPROM configuration memory; stable oscillator without external components; dynamic end-of-charge detection; and automatic sleep mode
• Applications: Cell phones, MP3 players, PDAs, digital cameras, Internet appliances, handheld devices

• Integrated out-of-audio operation improves noise performance
• 5.5-V to 42-V input supply voltage range; 2-V to 5.5-V output voltage range
• Applications: Notebook PC, light load battery-powered equipment

TPS51125 Price (1ku): $1.32

1.6-MHz, 3-A DC/DC Converter with Disable Sink During Start-Up: The TPS54377 is a 3-V to 6-V input DC/DC converter with integrated FETs that step down the voltage as low as 0.9V. The switching frequency is synchronizable and adjustable to 1.6MHz to reduce the size of external components and assist in specific spectral noise bands.

• Delivers up to 3-A output current at full temperature and supports 4-A peak output current
• Power good, enable, adjustable slow-start, current limit, thermal shutdown and 1% reference accuracy
• Applications: Broadband, networking and communications infrastructure, distributed power systems, POL regulation for DSP, FPGAs and ASICs

800-mA, 3-MHz Synchronous Step-Down Converter with I²C-Compatible Interface: The TPS62355 is a high-frequency, synchronous step-down DC/DC converter with a 0.9-V to 1.15-V default output voltage and is available in chip-scale packaging. Intended for low-power applications, it supports up to 800-mA load current and allows the use of tiny, low-cost inductors and capacitors.

• Communication interface can be used for dynamic voltage scaling with voltage steps as small as 12.5mV
• Applications: SmartReflex™-compliant power supplies, cell phones, PDAs, pocket PCs, digital cameras

200-mA LDO with Pin-Selectable, Dual-Voltage Level Output: The TPS728185315 is the industry’s first LDO with dynamic voltage scaling. Featuring selectable dual-voltage level outputs (0.9V to 3.6V in 50-mV steps), the device is designed specifically for applications requiring two levels of output regulation.

• 2.7-V to 6.5-V input voltage range
• High PSRR over a wide frequency range of up to 1MHz
• Applications: MegaSIM and eFUSE programming, wireless handsets, smartphones, PDAs, MP3 players, handheld devices

Smallest, Micropower Series Voltage References: The REF33xx family of voltage references are the industry’s lowest power series voltage references in the SC70 3-pin micro-size package and deliver high initial accuracy and low temperature drift across the extended industrial temperature range.

• 5-µA (max) quiescent current
• 0.15% (max) initial accuracy
• Applications: Portable consumer, laptops, handheld instrumentation, portable medical, data acquisition systems

6-A and 10-A, Non-Isolated, Wide-Output Adjustable Power Modules: The PTR08 is a new family of high-density, open-frame, non-isolated DC/DC modules for space-sensitive applications.

• 4.5-V to 14-V wide input range
• 0.6-V to 5.5-V adjustable output
• Rated up to 6A (PTR08060WVD) and 10A (PTR08100WVD)
• Applications: Servers, consumer electronics, office equipment, networking

2.4-GHz System-on-Chip with MCU, Memory, Transceiver and USB Controller: The CC2511x, companion products to the CC2510x family, provide a full-speed USB controller. Available in three versions (8/16/32kB Flash and 1/2/4kB RAM) the CC2511x devices support five USB endpoints in addition to the mandatory endpoint 0.

• DMA controller can be used to move data between the main memory and the USB controller without MCU intervention
• 2.4-GHz transceiver supporting data rates up to 500kSPS
• Applications: USB dongles (wireless headsets, keyboards, mice, presenters), wireless systems where a node needs to be connected to USB for firmware upgrades

CC2511F8 Price (1ku): $3.50

CC1110-CC1111DK Development Kit: The CC1110-CC1111 development kit allows quick evaluation of the CC1110/11 family. Right out of the box, the user can perform range testing (PER testing), transfer data from one PC to another, perform RF measurements and develop a prototype. The kit contains:

• 2 SmartRF®04 evaluation boards
• 2 CC1110EM 433 MHz evaluation modules
• 2 CC1110EM 868/915 MHz evaluation modules
• 1 CC1111EM 868/915 MHz USB dongle
• Antennas, cables, technical documentation and the SmartRF® Studio, IAR EW8051 C-compiler with C-SPY debugger (30+30-day evaluation license)

CC1110 and CC1111 Price: $649

• Three speed options from 0Mbps to 1/25/150Mbps
• Applications: Industrial fieldbus, motor control, power supplies, servo control interface, appliances

ISO7230/7231 Price (1ku): starting at $1.50

Low-Voltage, 8-Bit, I²C and SMBus I/O Expander with Interrupt and Reset: The TCA6408 is the industry’s first I²C I/O expander that can operate over the wide VCC range of 1.65V to 5.5V, allowing designers to directly interface the device to both next-generation and legacy processors. The device consists of one 8-bit configuration (input or output selection), input, output and polarity inversion (active high) register.

• Supports bi-directional voltage-level translation and GPIO expansion between the clock and data signal of the master and the I/Os on the slave, allowing designers to create a more compact design in mixed-mode voltage systems by eliminating the need for level shifters
• Applications: Cell phones, PDAs, MP3 players, servers, laptops, PC peripherals, telecom

TCA6408 Price (1ku): $2.66

• VCXO input with ±150-ppm pulling range
• Three low-jitter, low-skew outputs
• Applications: Digital media systems, streaming media, GPS receivers, portable media, DSP/OMAP/DaVinci™ media processors

CDCE913 Price (1ku): $1.60

1.8-V, Programmable VCXO 3-PLL Clock Synthesizer: The CDCE937 and CDCEL937 are modular PLL-based, low-cost, high-performance, programmable clock synthesizers that generate up to seven 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 three independent configurable PLLs.

• Easy frequency synchronization enables zero-PPM clocking generation
• Spread-spectrum clocking
• On-chip EEPROM and in-system, hot-programmability by SDA/SCL
• Applications: Digital media systems, streaming media, GPS receivers, portable media, DSP/OMAP/DaVinciTM media processors

CDCE937 Price (1ku): $2.00

• 10mV/°C analog output
• 5°C/10°C programmable hysteresis
• Open-drain output, ±4°C switch accuracy
• Applications: Power supply systems, DC/DC modules, thermal monitoring, electronic protection systems

TMP300 Price (1ku): $0.80

High-Performance Remote Plus Local Temp Sensor: The TMP421 and TMP422 are remote temperature monitors with built-in local temperature sensors. They also include series-resistant cancellation and a programmable non-ideality factor for improved system accuracy.

• Diode fault detection ensures that the remote sensor is in working condition and connected correctly
• Programmable addresses so multiple devices can exist on the I²C/SMBus
• Applications: LCD/DLP®/LCOS projectors, servers, industrial controllers, telecom equipment, computers, industrial and medical equipment

TMP421 Price (1ku): $1.25

• Applications: Cell phones, PDAs, portable instrumentation, audio and video signal routing, communication circuits

TS3A24157 Price (1ku): $0.67

Signal Chain Basics: On the first and third Monday of each month, Planet Analog will run a new article in “Signal Chain Basics,” a new column by Bill Klein. Over the course of this series, topics will include analog signal processing and supporting data converters, amplifiers, interface, power, and others. Click here to see a short video introduction.

 “A Primer on Power over Ethernet,” by Michael McCormack.  ciol.com, August 2007.

“Control Loop Considerations for an LED Driver,” by John Betten.  Power Management DesignLine, August 2007.
  
“Gigabit Serdes: The Cure for Common Data Link Ailments," by Atul Patel.  Mobile Handset DesignLine, August 2007.

“Taking advantage of digital power conversion solutions,” by Steve Bakota.   Electronic Products, August 2007.
  
“Power Management Techniques for Portable Software Defined Radios,” by Hector Rivera.  ECN, August 2007.

“Manage mixed voltages in mem card interfaces,” by Prasad Dhond.  EETimes, August 2007.      

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