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March 2012 |
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In this issue |
Featured Video |
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36-V, microPower, Rail-to-Rail Output, Dual, General-Purpose Op Amp in microPackage
The OPA170, OPA2170 and OPA4170 (OPAx170) are a family of 36-V, single-supply, low-noise operational amplifiers that feature microPackages with the ability to operate on supplies ranging from +2.7V (±1.35V) to +36V (±18V). They offer good offset, drift and bandwidth with low quiescent current. The single, dual and quad versions all have identical specifications for maximum design flexibility.
Resources:
Datasheet,
pin/package options,
active filter design application,
TINA-TI™ spice model,
evaluation module
- RFI filtered inputs
- Input range includes the negative supply; input range operates to positive supply
- Applications: Tracking amplifier in power modules, merchant power supplies, strain gauge amplifiers, precision integrators, battery-powered instruments, test equipment
OPA2170: Price (1ku): $0.60
Buy Now
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Dual-Channel, Low-Power, 12- and 10-Bit, 500-MSPS Digital-to-Analog Converters
The DAC3152 and DAC3162 are low-power, low-latency, high-dynamic-range, dual-channel, 10- and 12-bit, pin-compatible family of digital-to-analog converters (DACs) with a sample rate as high as 500MSPS. The DACs interface seamlessly with the high-performance TRF370333 analog quadrature modulator for direct upconversion architectures. Digital data for both DAC channels is interleaved through a single LVDS data bus with on-chip termination. The high input rate of the devices allows the processing of wide-bandwidth signals.
Resources:
Datasheet,
block diagram,
IBIS model,
DAC3152 evaluation module,
DAC3162 evaluation module
- LVDS input data bus: Interleaved DDR data load
- High DC accuracy: ±0.25 LSB DNL (10 bit), ± 0.5 LSB INL (12 bit)
- Simple control: No software required
- Applications: Base stations, wideband communications, medical instrumentation, test and measurement
DAC3162 / DAC3152: Price (1ku): $9.15
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Single-Inductor, Multiple-Output (SIMO) Regulator
The TPS65135 is a high-efficient, single-inductor, dual-output converter. Due to its single-inductor multiple-output (SIMO) technology, the converter uses a minimum of external components. The device operates with a buck-boost topology and generates a positive and a negative output voltage above or below the input voltage rail. The SIMO technology enables excellent line and load regulation required to avoid disturbance of a mobile phone display as a result of input voltage variations that occur during transmit periods. The device can also be used as a standard ±supply as long as the output current mismatch between the rails is smaller than 50 percent.
Resources:
Datasheet,
block diagram,
evaluation module
- 2.5-V to 5.5-V input voltage range
- 750-mW output power at VIN = 2.9V
- Positive output voltage up to 6V; negative output voltage down to -7V
- Applications: Active-matrix OLED power supply, LCD power supply, general dual power supply applications, LCD for smartphone and tablet
TPS65135: Price (1ku): $1.20
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Single-Channel, Current-Limited USB Power Distribution Switch
The TPS20xxC power-distribution switch family is intended for applications such as USB where heavy capacitive loads and short-circuits are likely to be encountered. This family offers multiple devices with fixed current-limit thresholds for applications between 0.5A and 2A.
Resources:
Datasheet,
block diagram,
PSpice transient model,
evaluation module
- Rated currents of 0.5A, 1A, 1.5A, 2A
- ±20% accurate, fixed, constant current limit
- Fast over-current response: 2µs
- Applications: USB ports/hubs, laptops, HDTVs, set-top boxes, short-circuit protection, VOIP phones
TPS2001C: Price (1ku): $0.55
Buy Now
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High-Efficiency, 5-A Step-Down Regulator with Integrated Switcher
TPS53316 provides a fully integrated 3.3-V or 5-V input, synchronous buck converter with 16 total components in 200mm2 of PCB area. Due to low RDS(on) and TI proprietary SmoothPWM™ skip mode of operation, it enables 96 percent peak efficiency and over 90 percent efficiency at load as light as 100mA. It requires only two 22-µF ceramic output capacitors for a power-dense, 5-A solution.
Resources:
Datasheet,
PSpice transient model,
evaluation module,
Power Stage Designer™
- Voltage mode control
- Single-rail input
- Selectable frequency
- Applications: Servers, DDRs and termination power supplies, switching power equipment, storage, printers
TPS53316: Price (1ku): $2.55
Buy Now
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4.5-V to 18-V Input, Dual 2-A Output, Synchronous Step-Down SWIFT™ Converter
The TPS54295 is a dual, adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54295 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count and low standby current solution. The main control loops of the TPS54295 use the D-CAP2 mode control, which provides a very fast transient response with no external compensation components. The TPS54295 is able to adapt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors.
Resources:
Datasheet,
block diagram,
SwitcherPro™ switching power supply design tool,
evaluation module,
Power Stage Designer
- Fast transient response
- No external parts required for loop compensation
- Compatible with ceramic output capacitors
- Applications: Digital TVs power supplies, networking home terminals, digital set-top boxes, DVD player/recorders, gaming consoles
TPS54295: Price (1ku): $3.50
Buy Now
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1.5-A Dual-Input Switch-Mode Charger with USB-OTG Support
The bq24140 is a compact, flexible, high-efficiency, USB-friendly switch-mode charge management device for single-cell Li-Iion and Li-Polymer batteries used in a wide range of portable applications. The charge parameters can be programmed through an I2C interface. The IC integrates two synchronous PWM chargers, power MOSFETs, input current sensing, high-accuracy current and voltage regulation, and charge termination, into a small WCSP package.
Resources:
Datasheet,
block diagram,
IBIS model,
evaluation module
- Charge battery and provide USB-OTG support at the same time
- High-accuracy voltage and current regulation
- Applications: Mobile phones, smart phones, MP3 players, handheld devices
bq24140: Price (1ku): $1.60
Buy Now
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Integer-N/Fractional-N PLL with Integrated VCO
The TRF3765 is a wideband Integer-N/Fractional-N frequency synthesizer with an integrated, wideband voltage-controlled oscillator (VCO). Programmable output dividers enable continuous frequency coverage from 300MHz to 4.8GHz. Four separate differential, open-collector RF outputs allow multiple devices to be driven in parallel without the need of external splitters. The TRF3765 also accepts external VCO input signals and allows on/off control through a programmable control output.
Resources:
Datasheet,
functional diagram,
evaluation module
- Output frequencies: 300MHz to 4.8GHz
- Low RMS jitter: 0.35ps
- Applications: Wireless infrastructure, wireless local loop, point-to-point wireless access, wireless MAN wideband transceivers
TRF3765: Price (100u): $8.15 (Package IRHBT)
Buy Now
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3.3-V Full-Duplex RS-485 Drivers and Receivers
The SN65HVD37 combines a robust differential driver and a receiver with high noise immunity for demanding industrial applications. The driver differential outputs and the receiver differential inputs are separate pins to form a bus port for full-duplex (four-wire) communications. The driver and receiver can be independently enabled, and feature a wide common-mode voltage range, making this device suitable for multi-point applications over long cable runs. The SN65HVD37 is characterized over the temperature range of –40°C to +85°C.
Resources:
Datasheet,
IBIS model,
evaluation module
- Low-current standby mode: <1µ (typ)
- Operational quiescent current: <1mA
- High receiver hysteresis for noise immunity: 60mV (typ)
- Applications: Telecommunication equipment, industrial automation, process automation, building automation, point-of-sale (POS) terminals
SN65HVD37: Price (1ku): $1.75
Buy Now
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New Additions to the TI WEBENCH® Designer:
Switchers and LDOs:
LM2990,
LM2991,
TPS84610,
TPS5401,
TPS54331
Try them from the WEBENCH® start panel on www.ti.com
New Additions to the TI WEBENCH FPGA/µP Architect:
Hot Swap Controllers:
LM25061,
LM25069,
LM5069
Try them from the WEBENCH start panel on www.ti.com
Model Update Partial list of models released in February 2012:
SPICE Macro:
LMP7721,
LMP91050,
TPS54618,
TPS65251,
TPS7A4001,
TLV62080,
TLV62130,
TLV62150,
TLV70245,
TLV7111533D,
TLV71133285D,
TPS62080A,
TPS62733,
UCC27511,
LMP8278Q,
LMV881,
TPA2080D1
Get more models: Devices supported by SPICE models
IBIS:
AMC7812,
CDCE913,
CDCM9102,
HD3SS3415,
PCM2707C,
SN75DP126,
TLV320AIC3262,
TS3DV621,
TSU6111A
Get more models: Devices supported by IBIS models
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• Field Transmitter: Pressure Sensor
• Field Transmitter: Temperature Sensor
• Point of Sale
• Server
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NEW LITERATURE AND VIDEOS |
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Guides: |
High-Speed Signal Conditioning Solutions Infrastructure and Enterprise Applications |
NexFET™ Power MOSFETs |
Power Management for Altera FPGAs |
Power Management Units for Embedded Processors |
Power Management Solutions for Stellaris® ARM® Cortex MCUs |
TI Solutions for Tablets and eBooks |
Application Notes: |
TRF3765 Synthesizer Lock Time |
Band-Pass Filter Design Techniques for High-Speed ADCs |
Design Procedures for the TPS54120 |
Building a Wireless Power Transmitter |
UCC25230 Bias Power-Supply Design Review |
Optimizing Resistor Dividers at a Comparator Input |
Videos: |
LMP91200 Integrated pH Sensor AFE Overview |
Thank an Engineer: Sonar |
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Technology Days 2012: Technology Days are full-day technical presentations on new products, TI solutions in key applications, and technology innovations. Topics vary by location and may include signal chain, wireless connectivity, embedded processors and microcontrollers, medical applications, and battery management and power. Click on your location to see the seminars and workshops offered.
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COMPANY-AUTHORED ARTICLES IN THE MEDIA |
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“Analog technique simplifies LED dimming in portable applications,” by Chris Glaser. LED Magazine, December 2011. |
“POWER TIP #42 (Part 1 of 2): Discrete devices – a good alternative to integrated MOSFET drivers,” by Robert Kollman. Power Management DesignLine, December 2011. |
“With today’s design tools, you don’t have to copy your father’s schematics,” by Rick Downs. Electronic Design, December 2011. |
“Standardized approach feeds wireless power,” by Bill Johns and Michael Knight. Microwaves & RF, December 2011. |
“Analysis and measurement of intrinsic noise in op amp circuits Part XI: Photodiode amplifier noise,” by Art Kay and Bryan Zhao. Engenius, December 2011. |
“BAKER'S BEST: Designing with temperature sensors, Part 4: Thermocouplers,” by Bonnie Baker. EDN, December 2011. |
“SIGNAL CHAIN BASICS Part #60: Tracking down spurious signals in high-speed ADCs,” by Robert Keller. EETimes, December 2011. |
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CUSTOMER SUPPORT CONTACT INFORMATION |
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Visit TI's E2E™ Community and interact with your peer engineers, TI engineers, and other experts in order to ask questions, share knowledge, explore ideas, and help solve problems. |
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