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New
High-Performance Analog Showcase
from Texas Instruments
June 2005
To subscribe to the Analog eNewsletter, please click here.
In
this Issue:
Amplifiers & Linear
Data Converters
Power Management
Software
Analog Training and Seminars
Company-Authored Articles in the Media
Customer Support Contact Information
AMPLIFIERS & LINEAR
Dual, Low-Power, Fixed-Gain Op Amp: The OPA2832 is an internally fixed-gain, high-speed op amp that allows easy implementation of a gain of +2V/V video line driver with RR output swing, offering a low-cost interface for single-supply video DACs.
- Useable supply voltage range: 2.8V (min) to 11V (max)
- Wide Video Buffer Bandwidth: 75MHz
- High Slew Rate: 350V/µs
- Applications: Line Drivers, Active Filters, Differential Receivers
High-Precision Op Amp Now in Small DFN 4x4mm Package: The OPA277’s new 4mm x 4mm DFN package is equivalent in size to an MSOP-8, but with much better thermal characteristics (45°C/W) than the MSOP-8 (150°C/W), helping to keep the die temperature cool.
- Low Offset Voltage: 35µV (typ)
- Low Quiescent Current: 800µA
- Applications: Transducer Amplifier, Temperature Measurement, Test Equipment
6-Channel, 200-W, Digital Amplifier Power Stage: The TAS5186 is a high-performance digital-amplifier power stage capable of driving a 6-Ω, single-ended load up to 30W per channel, and a 3-Ω, single-ended subwoofer greater than 50W at 10% THD performance. No power-up sequencing required due to internal power-on reset.
- SNR (A-Weighted): 105dB
- THD+N at 1W: <0.05%
- Applications: DVD Receiver, Home Theater, Mini/Micro Component Systems
2.5V and Adjustable Precision Shunt Regulators: The LM4040C25 and LM4041C are 2.5V and adjustable precision shunt regulators, respectively. They are stable with all capacitive loads and are now available in ultra-small SC70 packaging.
- Initial Tolerance (25°C): 0.5% C-grade; 1% D-grade
- Temp. Drift (typ/max): 15ppm/100ppm C-grade; 15ppm/100ppm D-grade
- Sink Current Capability: 0.045mA (typ) - 15mA
- Switching Power Supply, PCs, Routers, E-Meters, Medical Systems
LM4041C: Price (1 ku) $0.35
Dual, 1.8-V, RRIO Op Amp: The LMV982 and LMV981 (single) are low-voltage, low-power op amps capable of 80mV RRO while driving a 600-Ω load at 1.8V operation. Shutdown offers additional power savings and their wide operating temperature range, -40°C to +125°C, is suited for commercial, industrial and automotive applications.
- Gain Bandwidth: 1.4MHz
- Supply Current: 100µA/amp
- Operating Range: 1.8V, 2.7V and 5V
- Applications: E-Metering, Automotive, Modems, PCs, Battery Monitoring
Ultra-Low Power, Quad Op Amp: The LP324 and LP2902 are quad, low-power op amps featuring wide supply voltage (3V < Vcc < 32V), slew rate of 0.05V/µs and 0.037mA (max) Iq per channel.
- Low Supply Current: 85µA (typ)
- Low Offset Voltage: 2mV (typ)
- Low Input Bias Current: 2nA (typ)
- Applications: LCD Displays, MP3 Players, Portable Sensors
DATA CONVERTERS
16-Bit, Ultra-Low Power Vout DACs: The DAC8830 and DAC8831 are ultra-low power, single-channel, serial-in/voltage-out DACs operating from a single 3-V to 5-V supply. They offer excellent linearity (1LSB INL), low glitch (8nV-s), and low noise (10nV/rtHz); the DAC8831 can be configured for unipolar or bipolar output.
- Very Low Power: 15µW for 3V Power
- Fast Settling: 1µs
- Fast SPI Interface: Up to 50MHz
- Applications: Portable Equipment, ATE, Data Acquisition
DAC8831: Price (1 ku) $7.95
12-Bit, Ultra-Low Glitch, Octal Vout DAC: The DAC7558 offers eight 12-bit channels with true 12-bit integral and differential linearity. It is the only DAC to offer true 12-bit linearity and monotonicity with low power, low glitch and speed.
- Fast settling time (5µs)
- Low power consumption (225µA/ch)
- Flexible 3-wire SPI interface to connect to microcontrollers and DSPs
- Applications: Portable Systems, Process Control, Data Acquisition
Digitizer for Dual-Phase Current Measurement: The ADS1205 is a dual, 2nd-order, precision ΔΣ modulator operating from a +5V supply at a nominal 10-MHz clock rate. Additional features include 16-bit resolution (NMC), 14-bit linearity, a ±2.5V input range at 2.5V with only 0.5% gain error.
- INL: ±3LSB (max)
- SNR: 86dB (min)
- Distortion: -88dB (max)
- Motor Control, Current Measurement, Process Control, Instrumentation
Low Power, 24-Bit, Audio ADC: The PCM4201 low-power audio ADC is the only single-channel, <100mW, 112dB dynamic range ADC available. It supports PCM sampling rates up to 108kHz, differential voltage inputs and 24-bit linear PCM output data.
- Dynamic Range: 112dB
- THD+N: -105dB
- Applications: Digital Wireless Microphones, Portable Audio Recording/Processing
POWER MANAGEMENT
Wide-Input, 1.5-A, Non-isolated DC/DC Module: The PTN78000W is a non-isolated DC/DC module offering single regulated output over a wide input range. In a typical environment of 60°C and 200LFM airflow, it produces a full 1.5A output without derating. Other features include remote sense, short-circuit and over-current protection, and on/off inhibit control.
- Input Voltage: 7V to 36V
- Wide Adjustable Output: 2.5V to 12.6V
- Efficiency: 85%
- Industrial Test and Measurement, Distributed Power, Workstations, Medical Equipment
Positive-to-Negative Voltage DC/DC Power Modules: The PTN780xxA are non-isolated DC/DC power modules that allow creation of a negative output voltage from a positive input voltage.
- Adjustable output voltage range: -3V to -15V
- 1.5-A, 3-A and 4-A output current model
- Applications: Industrial, Telecom, Medical
PTN78020AAx: Price (1 ku) $15.00
PTN78000AAx: Price (1 ku) $8.00
Wide Input, 5-A, Non-Isolated DC/DC Module: The PTN78020H is a wide input, point-of-load module that delivers 5A of regulated power to its load at up to 95% efficiency. It offers line and load regulation, remote sense, over-temperature and over-current protection.
- Wide Input Range: 15V to 36V
- Output Range: 12V to 22V
- Applications: Industrial, Test and Measurement, Distributed Power
Wide Input, 3-A, Non-Isolated DC/DC Module: The PTN78060H is a point-of-load module that delivers 3A of regulated power to its load at up to 93% efficiency. Its wide range of input/output voltages maximizes design flexibility and reduces system redesign of existing architectures when voltage requirements change.
- Wide Input Range: 15V to 36V
- Output Range: 12V to 22V
- On/Off Inhibit
- Applications: Industrial, Test and Measurement, Distributed Power
Low-Side, ±4A MOSFET Driver with Current Sense: The UCD7100 is a digital-control-compatible, MOSFET gate driver that provides a fast (25ns) cycle-by-cycle current limit function with programmable threshold and a digital output current limit flag. Other features are a 3.3-V, 10-mA internal regulator and a single ±4-A TrueDrive™ high current driver.
- Rise Time: 10ns; Fall Time with Load: 2.2nF
- Input-to-Output Prop Delay: 25ns
- Current Sense to Output Delay: 25ns
- Applications: Digitally Controlled Power Supplies, DC/DC Converters, Motor Controllers
PCIX-2 Dual Slot Hot Plug Controller: The TPS2343 is a dual-slot, hot-plug controller for PCIX and PCIX-2 systems and includes all analog functions supporting LED drivers, module speed, switch and attention button inputs. Other features include a slot power-off indicator and fast fault indication.
- PCI Hot Plug-Compliant
- Applications: Server Market for Hot Plug of PCIX and PCIX-2 Modules
Advanced PFC/PWM Combination Controller: The UCC28521 and UCC28528 combination PCF/PWM controllers provide complete control functionality for any off-line power system requiring compliance with IEC1000-3-2 harmonic reduction requirements. Trailing-edge PFC and trailing-edge PWM modulation in a single device achieves significant performance benefits.
- 2-A Source, 3-A Sink High Current Drivers
- 16-ns Rise Time and 7-ns Fall Time into 1-nF Loads
- Supply Voltage: 18V max
- Applications: Server and Desktop Supplies, Telecom AC-DC Converter
SOFTWARE
TI now offers a powerful, easy-to-use circuit simulation program for designing, simulating and analyzing analog electronic circuits. The free Windows™-based software program, TINA-TI™, is available for download now. Included with the program is TI’s extensive library of macromodels for precision and high-speed amplifiers.
ANALOG TRAINING AND SEMINARS
View Archived Analog eLab Webcasts: The Analog eLab series provides designers with an online lab environment hosted by analog experts from TI and authorized TI distributors. The following Webcasts are archived online for you to view at your convenience.
- Utilizing High-Speed ADCs for Undersampling
- Precision Signal Conditioning for Delta-Sigma Data Converter Systems
- Power Concerns for Large Computational Devices: FPGAs and DSPs
- Amplifier Noise: Types, Origins, Magnitude Predictions and Reduction Techniques
- Quantifying Amp to ADC—Distortion Considerations
- Quantifying Amp to ADC Interface Performance
- Avoiding the Pitfalls with Single-Supply Op Amps
COMPANY
AUTHORED ARTICLES IN THE MEDIA
"-48-V ATCA Power Module Hot-Swap Using the TPS2393," by Jim
Bird. PowerDesignLine.com,
May 11, 2005.
"Load Sharing
Techniques: Paralleling Power Modules with Overcurrent Protection,"
by Lisa Dinwoodie. analogZONE, May 2, 2005.
"Flat
panels capitalize on cool, clear Class-D audio technology," by
Eric Droge. EE Product Center, May 27, 2005.
"Voltage
Mode Control - Should Designer Obey OLD Rules of Thumb in New Technology
Enviornment?" by Dirk Gehrke and Rais Miftakhutdinov. EE Times-Asia
and EE Times-Korea, May 2005.
"Small
Solution Size for Dynamic Voltage Management based on a High-Frequency
Buck Converter," by Markus Matzberger and Christophe Vaucourt.
Digitimes Taiwan, May 2005.
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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