The SSM3302 is a fully integrated, high efficiency, stereo Class-D audio amplifier. The application circuit requires minimal externalcomponents and operates from a single 7 V to 18 V supply. The device is capable of delivering 2 ? 10 W of continuous output power into a 4 ? load (or 2 ? 8 W into 8 ?) with 98 dB. Spread spectrum pulse density modulation (PDM) is used toprovide lower EMI radiated emissions compared with other Class-D architectures. The SSM3302 includes an optional modulation select pin (ultralow EMI emission mode) that significantly reduces the radiated emissions at the Class-D outputs, particularly above 100 MHz. The SSM3302 can pass FCC Class-B emissions testing with an unshielded 20 inch cable using common-mode choke-based filtering.The fully differential input of the SSM3302 provides excellent rejection of common-mode noise on the input. The device also includes a highly flexible gain select pin that only requires one series resistor to choose a gain between 9 dB and 24 dB, with no change to the input impedance. The benefit of this is to improve gain matching between multiple SSM3302 devices within a single application compared with using external resistors to set gain.The SSM3302 includes an integrated voltage regulator thatgenerates a 5 V rail.The SSM3302 has a micropower shutdown mode with a typical shutdown current of 10 ?A. Shutdown is enabled by applying a logic low to the SD pin. The device also includes pop-and-click suppression circuitry that minimizes voltage glitches at the output during turn on and turn off, reducing audible noise during activation and deactivation.Other included features to simplify system level integration of the SSM3302 are input low-pass filtering to suppress out-ofband DAC noise interference to the pulse density modulator, fixed input impedance to simplify component selection across multiple platform production builds, and a thermal warning indicator pin.The SSM3302 is specified over the commercial temperaturerange (?40?C to +85?C). It has built-in thermal shutdown andoutput short-circuit protection. It is available in a halide-free,40-lead, 6 mm ? 6 mm lead frame chip scale package (LFCSP).APPLICATIONS Mobile computing Flat panel televisions Media docking stations Portable electronics Sound bars

The SSM3525 is a fully integrated, high efficiency, mono Class D audio amplifier with digital input and digitized output of output voltage, output current, and PVDD supply. The application circuit requires few external components and can operate from 4.5 V to 17 V (PVDD) and 1.8 V (IOVDD) supplies. It is capable of delivering 8.3 W of continuous output power into an 8 ? load (or 15.3 W into 4 ?) with <1% THD + N from a 12 V supply, or 30.2 W into an 4 ? load from a 17 V power supply, all with <1% THD + N. The SSM3525 features a high efficiency, low noise modulation scheme that requires no external inductor/capacitor (LC) output filters. This scheme continues to provide high efficiency even at low output power. It operates with 92% efficiency at 9W into an 8 ? load, 12V or 89% efficiency at 20 W into 4 ? from a 17 V supply, (should now match the table)and it has an signal-to-noise ratio (SNR) of 107 dB A weighted.Spread spectrum pulse density modulation provides lower electromagnetic interference (EMI) radiated emissions compared with other Class-D architectures, particularly above 100 MHz.The digital input eliminates the need of an external digital-to-analog converter (DAC). The SSM3525 has a micropower shutdown mode with a typical shut?down current of 90 nA at 12 V PVDD supply. Individual sense blocks can be powered down to save power when sense is not needed.The device also includes pop and click suppression circuitry that minimizes voltage glitches at the output during turn on and turn off.Current sensing is accomplished using an integrated analog-to-digital converter (ADC) and internal sense resistor. The digitized voltage and current information can be returned in various serial audio formats, including I2S, time division multiplexing (TDM) and pulse density modulation (PDM).The SSM3525 includes an integrated regulator to generate the required 5 V analog supply. Alternatively, if an external 5 V rail from a dc-to-dc converter is available, it can improve system efficiency.The SSM3525 is designed to operate with an I2C control interface and specified over the temperature range ?40?C to +85?C. It has built-in thermal shutdown and output short-circuit protection. It is available in a halide free, 23-ball, 2.26 mm ? 2.38 mm wafer-level chip scale package (WLCSP).Applications Mobile computing Portable electronics

Demonstration circuit DC675C is for the evaluation of filter circuits using an LT1568. The LT1568 is a dual 2nd order active-RCfilterbuildingblockwithprecision ±0.75% capacitors and low noise op amps with 180MHz GBW trimmed to ±10% maximum variation. The ±10% GBW variation of the LT1568 op amps allows for minimizing the higher frequency error by decreasing resistor values. The cutoff or center frequency (fC) range of an LT1568 filter is 200kHz to 10MHz (5MHz for a bandpass filter). The low limit of 200kHz was chosen only to minimize resistor noise and DC offsets (using external capacitors the fC frequency can be less than 200kHz). For testing and evaluation, the DC675C assembly is configured as a single 4th order, 500kHz narrow passband bandpass filter. For other possible LT1568 configurations, the DC675C has unused pads for 0805 surface mount resistors and capacitors preconfigured with PCB traces to allow for the following high accuracy LT1568 filter circuits: 4th order lowpass filter 5th order lowpass filter 4th order narrow passband bandpass 4th order wide passband bandpass 4th order highpass filter Refer to the LT1568 data sheet for additional information about filter circuit configurations.

The LTC1563-2/LTC1563-3 are a family of extremely easy-to-use, active RC lowpass filters with rail-to-rail inputs and outputs and low DC offset suitable for systems with a resolution of up to 16 bits. The LTC1563-2, with a single resistor value, gives a unity-gain Butterworth response. The LTC1563-3, with a single resistor value, gives a unity-gain Bessel response. The proprietary architecture of these parts allows for a simple resistor calculation:R = 10k (256kHz/fC); fC = Cutoff Frequencywhere fC is the desired cutoff frequency. For many applications,this formula is all that is needed to design a filter.By simply utilizing different valued resistors, gain andother responses are achieved.The LTC1563-X features a low power mode, for the lowerfrequency applications, where the supply current is reducedby an order of magnitude and a near zero powershutdown mode.The LTC1563-Xs are available in the narrow SSOP-16package (Same footprint as an SO-8 package).Applications Discrete RC Active Filters and Modules Antialiasing Filters Smoothing or Reconstruction Filters Linear Phase Filtering for Data Communication Phase Locked Loops

The SSM6322 is an integrated, dual-channel audio amplifier solution that interfaces directly with audio DAC/CODEC, maximizing the fidelity of high fidelity audio signal chains. The highly efficient design of the SSM6322 delivers outstandingaudio performance while minimizing power dissipation for maximum battery life in portable applications.The SSM6322 features ?121 dB THD + N at 1 kHz, along with very low output noise from 20 Hz to 20 kHz. The low power operation, high peak output current, and high PSRR make the SSM6322 an ideal candidate for applications that require high fidelity audio, high dynamic range, precision, and low power. This highly integrated drive solution also reduces development time while reducing board space and minimizing external components.The SSM6322 is available in a 24-lead LFCSP package. The SSM6322 operates over the industrial temperature of ?40?C to +85?C.Applications High fidelity headphone driver Mobile phones Bluetooth speakers & headphones Gaming Notebooks and Tablets A/V receivers Professional audio equipment Audio test equipment Automobile infotainment system

Single Channel, 1024-Position, 1% R-Tolerance Digital Potentiometer Features: Single-channel, 1024-position resolution 20 kΩ, 50 kΩ, and 100 kΩ nominal resistance Calibrated 1% nominal resistor tolerance (resistor performance mode) Rheostat mode temperature coefficient: 35 ppm/°C Voltage divider temperature coefficient: 5 ppm/°C Single-supply operation: 9 V to 33 V Dual-supply operation: ±9 V to ±16.5 V SPI-compatible serial interface Wiper setting readback

33-Position Digital Potentiometer Features: 10K, 50K Ω End-to-End Terminal Resistance 33 Position AD5201 Wiper Connects Directly to Both End Terminals 3-Wire SPI Compatible Serial Data Input +2.7 V to +5.5 V Single-Supply; ±2.7 V Dual-Supply Operation, Ideal for Ground Referenced AC Signals Power ON Mid-Scale Preset Fully Characterized  (Rheostat, and Potentiometer-Divider Mode DNL, THD, Noise, Bandwidth), No Surprises! Compact micro-SOIC package <1.1 mm Height, Ideal for PCMCIA Cards

256-/1024-Position, Digital Potentiometers with Maximum 1% R-Tolerance Error and 20-TP Memory Features: Single-channel, 256-/1024-position resolution 20 kΩ, 50 kΩ, and 100 kΩ nominal resistance Maximum ±1% nominal resistor tolerance error (resistor performance mode) 20-times programmable wiper memory Rheostat mode temperature coefficient: 35 ppm/°C Voltage divider temperature coefficient: 5 ppm/°C +9 V to +33 V single-supply operation ±9 V to ±16.5 V dual-supply operation SPI-compatible serial interface Wiper setting readback Power-on refreshed from 20-TP memoryAD5292-EP: Supports defense and aerospace applications (AQEC) Download AD5292-EP Data Sheet (pdf) Temperature range:  −55°C to +125°C Controlled manufacturing baseline One assembly/test site One fabrication site Enhanced product change notification Qualification data available on request V62/12616 DSCC Drawing Number

Single Channel, 32-Position, I2C, 8% Resistor Tolerance, Nonvolatile Digital Potentiometer Features: Nominal resistor tolerance error: ±8% maximum Wiper current: ±6 mA Rheostat mode temperature coefficient: 35 ppm/°C Low power consumption: 2.5 μA max @ 2.7 V and 125°C Wide bandwidth: 4 MHz (5 kΩ option) Power-on EEPROM refresh time < 50 μs 50-year typical data retention at 125°C 1 million write cycles 2.3 V to 5.5 V analog supply operation 1.8 V to 5.5 V logic supply operation Wide operating temperature: −40°C to +125°C Thin, 2 mm × 2 mm × 0.55 mm 8-lead LFCSP package

Dual-Channel, I2C Compatible, 256 Position, Digital Potentiometer Features: 256 positions 10 kΩ, 100 kΩ, 1 MΩ Low temperature coefficient: 30 ppm/°C Single-supply 2.7 V to 5.5 V or dual-supply ±2.7 V for ac or bipolar operation Internal power on midscale preset I2C-compatible interface with readback capability Extra programmable logic outputs Self contained shutdown feature Extended temperature range: −40°C to +105°C