The LTC2941 measures battery charge state in battery-supplied handheld PC and portable product applications. Its operating range is perfectly suited for single-cell Li-Ion batteries. A precision coulomb counter integrates current through a sense resistor between the battery?s positive terminal and the load or charger. The measured charge is stored in internal registers. An SMBus/I2C interface accesses and configures the device.The LTC2941 features programmable high and low thresholds for accumulated charge. If a threshold is exceeded, the device communicates an alert using either the SMBus alert protocol or by setting a flag in the internal status register.The LTC2941 requires only a single low value external sense resistor to set the current range. Integrated Sense Resistor LTC2941 No LTC2941-1 Yes Applications Low Power Handheld Products Cellular Phones MP3 Player Cameras GPS

Demonstration circuit 2707B uses the LTC®4418 to arbitrate between two input supply rails, selecting the highest priority, valid supply to power the load. The V1 rail is defined to have higher priority and the V2 rail has lower priority. Both rails have individual overvoltage and undervoltage comparators for setting valid window thresholds with external resistive dividers. If the highest priority rail voltage V1 falls out of the defined window (overvoltage or undervoltage), the V2 rail, if it is valid, is enabled and powers the load. Two or more LTC4418s can be cascaded to provide switchover between more than two rails.

Demonstration circuit 2786A is a single output high voltage non-isolated synchronous step-down converter that drives an all N-channel MOSFET power stage. It features the LTC7800, a low quiescent current high frequency (programmable fixed frequency from 320kHz up to 2.25MHz) synchronous step-down DC/DC controller housed in a small 3mm x 4mm QFN package. This DC2786A operates over an input voltage range from 8V to 40V, while the LTC7800 can operate up to 60V. This demo board produces a 3.3V output voltage with up to 10A output current, and is configured with a sense resistor for current sensing. A mode selector allows the DC2786A to operate in forced continuous operation, pulse-skipping or Burst Mode® operation during light loads. The LTC7800 features two integrated 5V gate drivers with 20ns deadtime which is good for GaN transistors or logic-level MOSFETs to maximize efficiency. The EXTVCC pin permits the LTC7800 to be powered from the output of the switching regulator or other available source, reducing power dissipation and improving efficiency. Please refer to the LTC7800 data sheet for a complete description of the part operation and application information.

The SSM6515 is a fully integrated, high efficiency, mono Class-D audio amplifier with digital input that is ideally suited for use in wireless headphones. The application circuit requires few external components and operates from a 1.8 V (PVDD) supply and a 1.2 V to 1.8 V (IOVDD) supply. With 1.8 V signaling, these can be shared. It can deliver 85 mW of continuous output power into a 16 ? load with 90% efficiency at 55 mW into a 16 ? load and it has a signal-to-noise ratio (SNR) of 113 dB, A weighted. Spread spectrum, stable common-mode pulse density modulation provides a much lower electromagnetic interference (EMI) radiated emissions compared with other Class-D architectures.The digital input eliminates the need of an external digital-to-analog converter (DAC). The SSM6515 has a micropower shutdown mode with a typical shutdown current of 6 ?A at the 1.8 V PVDD supply and can automatically power down with no input. The device also includes pop and click suppression circuitry that minimizes voltage glitches at the output during turn on and turn off. Inputs support various serial audio formats, including I2S, time division multiplexing (TDM), and pulse density modulation (PDM).The SSM6515 is designed to operate with an I2C control interface or in standalone mode and specified over the temperature range of ?40?C to +85?C. The device has built-in output short-circuit protection. The SSM6515 is available in a halide free, 11-ball, 0.984 mm ? 1.444 mm, 0.35 mm pitch wafer-level chip scale package (WLCSP).APPLICATIONS Wireless headphones Active noise canceling headphones Smartphone earpiece speakers Hearing assistance devices Portable electronics

3-5.5V DC 1Mbit/sc 3Chnl Dgtl 3Txr0Rxr ;RoHS Compliant: Yes

IC 16-BIT AUDIO DAC IC

ANALOG TO DIGITAL CONVERTER ADC 16 BIT 100MSPS TQFP-100; Resolution (Bits):16bit; Sampling Rate:100MSPS; Supply Voltage Type:-; Supply Voltage Min:3.14V; Supply Voltage Max:5.25V; ADC / DAC Case Style:TQFP; No. of Pins:100Pins ;RoHS Compliant: Yes

IC MUX 8CH SP JFET DIP16; Multiplexer Configuration:8:1; No. of Circuits:1Circuits; On State Resistance Max:300ohm; Supply Voltage Range:± 15V; Analogue Multiplexer Case:DIP; No. of Pins:16Pins; Operating Temperature Min:-40°C; Operating Temperature Max:85°C; Packaging:Each; Product Range:MUX08 Series; Automotive Qualification Standard:-; MSL:-; SVHC:No SVHC (20-Jun-2016); Analogue Multiplexer Type:8 Channel Single Pole; Analogue Switch Case Style:DIP; Base Number:8; IC Generic Number:08; Logic Function Number:8; No. of Channels:8Channels; On Resistance Rds(on):400ohm; Operating Temperature Range:-40°C to +85°C; Supply Current:15mA; Supply Voltage Source:Dual; Termination Type:Through Hole

IC CMOS SWITCH DUAL DPDT TSSOP-16; Analogue Switch Type:DPDT; No. of Channels:2Channels; On State Resistance Max:0.4ohm; Supply Voltage Range:4.2V to 5.5V; Analogue Switch Case:TSSOP; No. of Pins:16Pins; Operating Temperature Min:-40°C; Operating Temperature Max:125°C; Packaging:Each; Product Range:ADG888 Series; Automotive Qualification Standard:-; MSL:MSL 1 - Unlimited; SVHC:No SVHC (20-Jun-2016); Analogue Switch Case Style:TSSOP; Operating Temperature Range:-40°C to +125°C

SWITCH MUX/DEMUX DUAL 2:1 MSOP10; Analogue Switch Type:SPDT; No. of Channels:2Channels; On State Resistance Max:3.45ohm; Supply Voltage Range:1.8V to 5.5V; Analogue Switch Case:MSOP; No. of Pins:10Pins; Operating Temperature Min:-40°C; Operating Temperature Max:85°C; Packaging:Each; Product Range:ADG787 Series; Automotive Qualification Standard:-; MSL:MSL 1 - Unlimited; SVHC:No SVHC (20-Jun-2016); Analogue Multiplexer Type:USB 1.1 Switch; Analogue Switch Case Style:MSOP; Bandwidth:145MHz; Base Number:787; IC Generic Number:787; Logic Function Number:787; On Resistance Rds(on):2.5ohm; Operating Temperature Range:-40°C to +85°C; Supply Voltage Max:5.5V; Supply Voltage Min:1.8V; Supply Voltage Source:Single; Termination Type:Surface Mount Device; Turn Off Time:3ns; Turn On Time:13ns