Using the TPS5430 As An Inverting Buck Boost Converter (Rev. A)
Texas InstrumentsThe wide input voltage range SWIFT™ dc/dc converters are used typically as step-down converters where the derived output is a positive voltage less than the input voltage source. In some cases it may be required to generate a negative voltage from the input voltage source. In such instances it is possible to configure the TPS5430/20/10 devices in an inverting buck-boost topology where the outpu
Wave Digital Filtering Using the MSP430
Texas InstrumentsDigital filtering is an integral part of many digital signal processing algorithms. Digital filters are characterized as either recursive [infinite impulse response (IIR)] or non-recursive [finite impulse response (FIR)] filters. IIR filters require a smaller order for the same set of specifications compared to FIR filters, while FIR filters provide a linear phase property. However, IIR filters, if not designed properly, tend to be unstable and use coefficients that are difficult to implement. This application report discusses the design of a certain type of IIR digital filter with excellent stability properties, known as a Lattice Wave Digital Filter (LWDF), given a set of analog filter specifications. An elementary knowledge of filters is sufficient to understand the design of LWDF as discussed in this report. The complete design of the basic filters (low-pass, high-pass, and band-pass) is given with examples. Code that implements these LWDFs on the MSP430 CPU is provided with this report.
TSB12LV01B/TSB41AB3 Reference Schematic (Rev. A)
Texas InstrumentsThis application report describes the electrical connections between the Texas Instruments TSB12LV01B and TSB41AB3 for common modes of operation. Use this document in conjunction with the TI application report Recommendations for PHY Layout (SLLA020) to successfully design a 1394 system.The TSB12LV01B is a high-performance general-purpose IEEE 1394-1995 link-layer controller (LLC) with the
Understanding the ADS1252 Input Circuitry
Texas InstrumentsThis application report describes the ADS1252?s input circuit to better illustrate the loading seen by the signal source.
U-514 Using the bq2010 - A Tutorial for Gas Gauging
Texas InstrumentsThe bq2010 Gas-Gauge IC is a complete battery-monitoring product for NiMH and NiCd batteries. This tutorial introduces the bq2010. The tutorial should be used with the bq2010 data sheet when designing with or evaluating the bq2010. It describes capacity monitoring compares Unitrode's gas-gauge solutions to microprocessor-based implementations describes device operation in general terms and addr
TMS320C6747/45/43 Power Consumption Summary
Texas InstrumentsThis application report discusses the power consumption of the Texas Instruments C6747/45/43. Power consumption on the C6747/45/43 devices are highly application-dependent so a spreadsheet is provided to model power consumption for a user's application. To obtain good results from the spreadsheet realistic usage parameters must be entered. The low-core voltage and other power design optimization
Connecting PGA900 Instrumentation Amplifier to Resistive Bridge Sensor
Texas InstrumentsUnderstanding the input and output limitations of an instrumentation amplifier (IA) is important in interfacing a resistive bridge sensor to the PGA900. Adjusting the common mode voltage of the input
TPS5625 Working with TMS320C6201 Applications
Texas InstrumentsThis application report describes a design example that uses fast TPS5625 hysteretic controller and low-cost TL5001A PWM controller installed in SLVP105 and SLVP101 EVMs for a TMS320C6201 DSP application. This design converts 5 V to 2.5 V at 8 A and 3.3 V at 3 A for high-current DSP applications.
TPS2350 With High-Side Switch
Texas InstrumentsThis application note addresses a method to OR the high side of the power source as well as the low side using N-channel MOSFETs, thus replacing diodes D1 and D2 with more efficient MOSFETs in the hig
Selecting among DRV88xx devices to drive Brushed or Stepper Motors
Texas InstrumentsDRV8802, DRV8812, DRV8813, DRV8814, DRV8828, DRV8829, DRV8840 Selecting among DRV88xx devices to drive Brushed or Stepper Motors
AC Error Equations for Operational Amplifiers
Texas InstrumentsThis report develops the transfer function and loop gain of nonideal operational-amplifier (op-amp) circuits so the ac errors of the op amp can be analyzed. It describes inverting noninverting and differential op-amp circuits.
Converting Single Line PWM Input Signals to Dual Line Input Signals
Texas Instruments1N to 2N Conversion
How to Apply 1.8-V Signals to 3.3-V CDCLVC11xx Fanout Clock Buffer
Texas InstrumentsThe CDCLVC11xx buffer family from Texas Instruments has a nominal voltage supply of 2.5 V and 3.3 V. With the simple employment of an external RC network this family of devices can handle incoming signals whose voltage levels go up to 1.8 V. This application report explains how to implement this network and dimension its discrete components without impacting the specifications of additive ji
HC5503PRC SLIC and the Texas Instruments TP3057A Combined PCM Codec and Filter
Texas InstrumentsThe network requirements of many countries require the analog subscriber line circuit (SLIC) to terminate the subscriber line with an impedance for voiceband frequencies which is complex rather than resistive (e.g. 600 Ohms). This requires that the physical resistance that is situated between the SLIC and the subscriber line comprised of protection and/or sensing resistors and the output resist
Opto-Isolator Selection Guidelines: TPS2384 I2C Interface
Texas InstrumentsOpto-Isolator Selection Guidelines: TPS2384 I2C Interface
AN062: TI-MAC and Z-Stack modifications for using CC2591 RF Front End w/CC2430 (Rev. A)
Texas InstrumentsAN062: TI-MAC and Z-Stack modifications for using CC2591 RF Front End with CC2430
DN-90 UCC3858 "Energy Star" PFC EVM Board, Schematic, and List of Materials
Texas InstrumentsThe UCC3858 provides all functions necessary for active power-factor-corrected preregulators that require high efficiency for low-power operation. This design note describes the UCC3858 demonstration
