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TI Analog Connection
Your monthly update of new Analog products from TI
March 2008
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DATA CONVERTERS
4- and 8-Channel Simultaneous Sampling, 16-Bit ADCs: The ADS1174 (quad) and ADS1178 (octal) are 16-bit, ΔΣ, pin-compatible versions of the 24-bit ADS1274/78 with data rates up to 52kSPS to allow for simultaneous sampling of four and eight channels. They feature either selectable SPI™ or frame sync serial interface.
- 5-V supply with two operating modes: High-speed mode (31mW/Ch at 52kSPS, 97-dB SNR) and low-power mode (7mW/Ch at 10kSPS, 97-dB SNR)
- 25-kHz signal bandwidth, 97-dB SNR, -105dB THD
- Applications: Power metering, coriolis flow meters, ECG, pressure sensors
16-Bit, 1-MSPS, Ultra-Low Noise SAR ADC: The ADS8471 offers excellent AC/DC performance with low-drift characteristics, zero latency, and a full 16-bit interface or 8-bit bus option using a two-read cycle, an internal 4.096-V reference and a pseudo-bipolar, unipolar input.
- ±1 LSB (max) INL, ±0.75 (max) DNL
- 92.7-dB SNR, -107-dB THD, 109-dB SNR
- Applications: Medical instruments, optical networking, magnetometers, transducer interface
Most Linear, 18-Bit, 1.25-MSPS SAR ADC: The ADS8484, the most linear 18-bit ADC available, allows system sampling rates up to 1.25MSPS without sacrificing linearity (±2.5 LSB [max] INL; +1.5/-1 LSB [max] DNL). The device includes an on-chip, low-drift reference, reference buffer, differential input and a parallel interface.
- ±0.5mV offset error, ±0.1% gain error, ±0.05ppm/ºC offset error drift, ±0.5ppm/ºC gain error drift
- 98-dB SNR, -110-dB THD, 113-dB SFDR
- Applications: Medical instruments, highest accuracy acquisition systems, high-precision test equipment
12-Bit, 40-kSPS, Bipolar SAR ADC: The ADS8506, a drop-in compatible upgrade to the ADS7806, includes both SPI-compatible serial interface and a full 12-bit parallel data bus, integrated voltage reference, and a ±10V analog input with a single +5-V power supply.
- ±45 LSB (max) INL, ±0.45 (max) DNL
- 74-dB SNR, -96-dB THD, 98-dB SFDR
- Applications: Industrial process control, data acquisition systems, test equipment
8-Channel, 12-Bit, 50-MSPS ADC with Serialized DDR LVDS Outputs: Consuming only 64mW per channel, the ADS5281 is the industry’s lowest power 12-bit, 50-MSPS ADC on a per-channel basis. The serialized DDR LVDS outputs also minimize trace count from the ADC to the digital processor, significantly easing layout and reducing FPGA or ASIC pin consumption vs. a parallel data fan-out.
- 70-dB SNR, 85-dB SFDR at fIN = 5MHz, 1/f noise suppression
- Supports Sine, LVCMOS, LVPECL, LVDS clock inputs with amplitudes as low as 400mVpp
- Applications: Medical imaging, industrial imaging, wireless communication, multi-channel data acquisition
11-Bit, 200-MSPS ADC with Selectable CMOS or LVDS Outputs: The ADS5517 is a high-speed, high-performance ADC with internal reference and offers a fully differential LVDS DDR interface or parallel CMOS outputs. The device supports high SNR and high SFDR at high input frequencies, well beyond 250MHz.
- 67-dB SNR, 84-dB SFDR at fIN = 70MHz
- Up to 6-dB programmable gain in 1dB steps
- Applications: Wireless communications, test instrumentation, general-purpose data acquisition, cable termination receivers, radar systems
POWER MANAGEMENT
750-mA, 1-Cell, Li-Ion Charger with Thermal Regulation: The bq24085/6/7 series are highly integrated Li-Ion and Li-Pol linear chargers offering a variety of safety features and functional options. The battery is charged in three phases: conditioning, constant or thermally regulated current and constant voltage.
- 26-V (max) input voltage with over-voltage protection, integrated power FET and current sensor for up to 750-mA charge applications
- Applications: Mobile phones, pagers, MP3 players, portable media players
bq24085 Price (1ku): $0.95
Smart Battery Charger with SMBus: The bq24745 is a >95% efficient, 300-kHz, fixed frequency, synchronous battery charger with an integrated input current comparator for multi-chemistry, multi-cell battery charging applications. SMBus input current, charge current and charge voltage DACs allow for very high regulation accuracies that can be easily programmed by a microcontroller using SMBus.
- 0.5% charge voltage regulation accuracy, 3% charge current regulation accuracy
- Dynamic power management and input power limiting
- Applications: Notebook computers, portable data-capture terminals, medical equipment, battery-bay chargers
bq24745 Price (1ku): $2.90
- Two error circuits included: LED open detection and thermal error flag
- 50-mA constant current, 30-MHz data transfer rate, 33-MHz grayscale clock
- Applications: Mono-/multi-/full-color LED display/sign, LED signboards, display backlight
2-MHz, 650-mA Step-Down Converter for RF Power Amps: The TPS62700 is a high-efficiency, synchronous DC-DC converter optimized for RF power amplifiers and operates with fixed-frequency PWM mode at 2-MHz switching frequency to minimize RF interference. It provides up to 650-mA output current from a single Li-Ion cell.
- Input voltages from 2.7V to 5.5V are converted down to an output voltage by an external analog reference voltage applied to the VCON pin
- 650-mA (max) output current, 2-MHz switching frequency, ±2% DC output accuracy
- Applications: Cell phones, smart phones, battery-powered RF amplifiers
50-mA LDO with Programmable Soft Start: The TPS74701 uses a user-programmable soft-start to minimize stress on the input power source by reducing capacitive inrush current on start-up. The enable input and power-good output allow easy sequencing with external regulators. A precision reference and error amplifier deliver 2% accuracy over load, line, temperature and process.
- 0.8V to 5.5V VIN and VOUT range, 2.7V to 5.5V VBIAS range
- 50mV (typ) at 500-mA low dropout
- Applications: FPGA applications, DSP core and I/O voltages, hot-swap and inrush controls
AMPLIFIERS
Dual, Wideband, Voltage-Feedback Op Amp with Disable: Featuring a new internal architecture that greatly improves slew rate and full-power bandwidth found in current-feedback amps, the OPA2890 unity gain stable, voltage-feedback amp offers 400V/µs slew rate, 250MHz (G = +1V/V) wide bandwidth and low 1.1-mA/ch quiescent current.
- ±4.1-V (VS = ±5V) output voltage swing
- 30µA/ch disable current
- Applications: Video line drivers, xDSL line receivers, high-speed imaging channels, portable instruments
High Supply Voltage, High Output Current, Power Op Amp: The OPA454 precision power op amp operates on single supplies up to 100V and delivers >50-mA drive current with a 150-mA short circuit limit. It is unity gain stable, and junction temperature can be kept lower by heat sinking to the exposed thermal power pad, thus improving long-term reliability.
- ±5-V (10-V) to ±50-V (100-V) wide supply range
- ±100-pA bias current, 2.5-MHz BW, 13-V/µs slew rate
- Applications: Automatic test equipment, optical communication, power management, industrial, data acquisition systems
OPA454 Price (1ku): $2.75
420-MHz Variable Gain Amplifier: The VCA821 is a DC-coupled, wideband, linear in dB, 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 and feedback resistor.
- 420-MHz small signal bandwidth (G = +10dB/V)
- 320-MHz, 4-Vpp bandwidth (G = +10dB/V)
- Applications: Differential line receivers and equalizers, pulse amplitude compensation, variable attenuators, voltage tunable active filters
AUDIO & IMAGING
20-W, Stereo Digital Audio Power Amp with Integrated Feedback and On-Chip Audio Processing: The TAS5706 is the first 20-W stereo digital audio amplifier with integrated feedback (closed loop) and on-chip audio processing, which includes speaker equalization and dynamic range control. The device supports multiple output configurations including stereo, quad and 2.1 systems.
- Up to 90% into 8-Ω efficiency
- 10-V to 26-V supply range
- Applications: Flat-panel TVs, mini speakers, docking stations, wireless speakers
Low-Power, 4-Channel Audio Codec for Portable Audio: The TLV320AIC34 is a low-power, four-channel, stereo audio codec with extensive register-based power control. Two independent PLLs (512kHz to 50MHz) allow for simultaneous operation when different audio streams with different sampling rates pass through the device at the same time such as with a Bluetooth™ headset, or audio capture at CDE or MP3 sampling rates.
- Audio DAC: Stereo 8 to 96kSPS with 102-dB SNR
- Audio ADC: Stereo 8 to 96kSPS with 92-dB SNR
- Applications: Cell phones, personal media players, personal navigation devices, surveillance digital video recorder
TLV320AIC34 Price (1ku): $5.95
40-W, Mono, Class-D Audio Power Amp: The TPA3106D1 is a 40-W (8Ω at 24V), efficient, Class-D audio power amplifier for driving a bridge-tied load mono speaker. Two gain select pins with selections of 20, 26, 32, and 36dB control gain. The outputs are protected against shorts to GND, VCC and output-to-output shorts with an auto recovery feature and monitor output.
- Up to 92% efficiency into 8Ω
- 10-V to 26-V supply range
- Applications: Flat-panel TVs, CRT TVs, wireless speakers
4-Channel, Low-Power PAL/NTSC/SECAM Video Decoder: The TVP5154A video decoder converts NTSC, PAL or SECAM video signals to 8-bit ITU-R BT.656 format with embedded syncs, or the output formats can be 8-bit, 4:2:2 with discrete syncs. Each channel is an independent decoder with a programmable polymorphic scaler.
- 1.8-V analog and digital supply and 3.3-V I/O supply
- Power consumption: <720mW in typical operation
- Applications: Surveillance security cameras, multi-channel video input applications
INTERFACE
Triple-Channel, Capacitive Digital Isolators: The ISO7230 and ISO7231 are 3.3-V and 5-V high-speed digital isolators that provide galvanic isolation of up to 4000V. The ISO7320 has three channels in the same direction and the ISO7321 has two channels in one direction and the third reversed.
- Dedicated DC circuit guarantees that the outputs are always in proper phase with the inputs and provides a fail safe to protect against erroneous output switching in the event of power loss
- Applications: Industrial fieldbus, motor control, power supplies, servo control interface, appliances
Quad, High-Speed Digital Isolators: The ISO7241 and ISO7242 are 3.3-V and 5-V high-speed digital isolators that provide galvanic isolation of up to 4000V. The ISO7241 has three channels in the same direction and one in reverse, while the ISO7242 has two channels in each direction.
- Dedicated DC circuit guarantees that the outputs are always in proper phase with the inputs and provides a fail safe to protect against erroneous output switching in the event of power loss
- Applications: Industrial Fieldbus, motor control, power supplies, servo control interface, appliances
ISO724x Price (100u): $1.90
LOW-POWER RF
IEEE 802.15.4/ZigBee® 2.4-GHz Transceiver: The CC2520 RF transceiver for the 2.4-GHz unlicensed ISM band enables industrial-grade applications by offering state-of-the-art selectivity/co-existence, excellent link budget, operation up to +125ºC and low-voltage operation.
- 49-dB adjacent channel rejection, 54-dB alternate channel rejection
- 1.8-V to 3.8-V supply range
- Applications: Industrial monitoring and control, home and building automation, automatic meter reading, low-power wireless sensor networks, remote controls, consumer electronics
Z-Stack Latest Release 1.4.3 Now Available for Download: Z-Stack 1.4.3 provides the latest ZigBee software for the CC2430 System-on-Chip and CC2420 plus MSP430 platforms. Z-Stack 1.4.3 significantly reduces the code size, leaving more room for your application.
Z-Stack 1.4.3 Download Price: Free
I²C
Expandable Five-Channel I²C Hub: The I²C protocol requires a maximum bus capacitance of 400 pF, which is derived from the number of devices on the I²C bus and the bus length. TI’s lowest power PCA9518 device overcomes this restriction by separating and buffering the I2C data (SDA) and clock (SCL) lines into multiple groups of 400-pF segments. Any segment-to-segment transition sees only one repeater delay.
- Each PCA9518 can communicate with other PCA9518 hubs through a 4-wire inter-hub expansion bus
- Using multiple PCA9518 parts, any width hub (in multiples of five) can be implemented using the expansion pins, with only one repeater delay and no functional degradation of the system performance
- Applications: PC (enterprise servers, workstations), telecom (hubs, switches, routers), PC peripherals (printers, disk drives)
Two-Channel I²C-Bus Switch With Interrupt Logic and Reset, and 8-Channel I²C Switch With Reset: The PCA9543A and the PCA9548A I²C switches are useful for resolving I²C address conflicts and also for multiplexing between 2 to 8 different segments of a design. Each switch within these devices can support voltage level translation between 1.8-V, 2.5-V, 3.3-V and 5-V buses, which is essential in mixed voltage I2C systems.
- Offered in NiPdAu finish for lead-free
- Each channel (SCLn/SDAn) can be selected via I²C Bus
- Applications: Battery-powered portables (handsets, MP3 players), PC (enterprise servers, workstations), telecom (hubs, switches, routers), PC peripherals (printers, disk drives)
PCA9543A Price (1ku): $0.79
Low-Voltage 7-Bit I²C and SMBus LED Driver With Intensity Control and Shutdown: The TCA6507 is the industry’s first I²C LED driver that can control the brightness and blinking pattern and perform automatic gradual fading of LEDs all at the same time using pulse-width modulation intensity control. This device frees the processor from the LED blink operations, allowing it to focus on other tasks in the application.
- Wide Vcc range of 1.65V to 3.6V
- Enable input
- Outputs not used as LED drivers can be used as regular general-purpose open-drain outputs
- Applications: portable (PDAs, cell phones, PMP and MP3 players), PC (enterprise servers, workstations), notebooks, telecom (hubs, switches, routers), PC peripherals (printers, disk drives)
DSP
White Paper: Transcoding with TI’s DaVinci™ Technology: A new white paper titled “Transcoding with TI’s TMS320DM6467 Digital Media Processor and DaVinci™ Technology Drives Video Market Evolution” explains why the new SoC is the answer to transcoding challenges in performance and flexibility. Download now.
NEW LITERATURE
2008 LED Drivers Catalog: Download the TI LED Drivers Catalog and learn about our power management portfolio for video signage and portable LED designs. See featured new products, parametric tables and a wide range of design factors.
2008 Analog Automotive Selection Guide: Download the latest edition of TI’s Analog Automotive Selection Guide for featured new products, parametric tables, and a wide range of design factors.
TRAINING AND SEMINARS
Low-Power RF and ZigBee® Networking Workshop: This hands-on, 3-day course will provide a solid foundation in RF capabilities, MAC layer communications, OSAL/HAL usage, ZigBee networking and Z-Stack-based product development. To be held in select cities in the U.S. and Europe.
Technology Day Minnesota: Join TI for a day packed with technical design sessions and technology exhibits. The seminar is aimed at providing a learning forum where practical high-performance design solutions, tools, techniques, topologies and examples will be presented.
COMPANY-AUTHORED ARTICLES IN THE MEDIA
“Combining Inrush Current Limiting with PFC for White Goods Motor Applications,” Tim Aliberti. Power Systems Design: December 2007
“Design Challenges of Portable Medical Monitoring Systems,” Jon Bearfield. Wireless Design & Development: October 2007
“Maximizing AC/DC Efficiency from Full-load to No-load,” Hong Huang. Power Management DesignLine: November 2007
“Analysis & Measurement of Intrinsic Noise in op amp Circuits – Part 7: Noise Inside the Amplifier,” Art Kay. AnalogZone: October 2007
“Thin is In – Making Small, Highly Efficient Power Supplies,” Bob Neidorff. EDN: December 2007
“HANA – Unleashing the Power of HD,” Dan Mar. Digital TV DesignLine: December 2007
“Programmability Offers Versatility in High-Speed ADCs,” Philip Pratt. Planet Analog: October 2007
“Isolating Industrial Interfaces,” Thomas Kugelstadt. Electronic Design: November 2007
“Over-voltage and Over-current Protection Increase Safety and Reliability in Charge Management Systems,” Patrick Heyer. EDN: October 2007
“BAKER'S BEST: Voltage and Current Feedback Amplifiers are Almost the Same,” Bonnie Baker. EDN: October 2007
CUSTOMER SUPPORT CONTACT INFORMATION
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