The ADXL375 is a small, thin, 3-axis MEMS accelerometer that provides low power consumption and high resolution measurement up to ±200 g. The digital output data is formatted as 16-bit, twos complement data and is accessible through a SPI (3- or 4-wire) or I2C digital interface.An integrated memory management system with a 32-level first in, first out (FIFO) buffer can be used to store data to minimize host processor activity and lower overall system power consumption.Low power modes enable intelligent motion-based power management with threshold sensing and active acceleration measurement at extremely low power dissipation.The ADXL375 is supplied in a small, thin, 3 mm × 5 mm × 1 mm, 14-lead LGA.APPLICATIONS Concussion and head trauma detection High force event detection

The ADXL343 is a versatile 3-axis, digital-output, low g MEMS accelerometer. Selectable measurement range and bandwidth, and configurable, built-in motion detection make it suitable for sensing acceleration in a wide variety of applications. Robustness to 10,000 g of shock and a wide temperature range (−40°C to +85°C) enable use of the accelerometer even in harsh environments.The ADXL343 measures acceleration with high resolution (13-bit) measurement at up to ±16g. Digital output data is formatted as 16-bit twos complement and is accessible through either an SPI (3- or 4-wire) or I2C digital interface. The ADXL343 can measure the static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration resulting from motion or shock. Its high resolution (3.9 mg/LSB) enables measurement of inclination changes less than 1.0°.Several special sensing functions are provided. Activity and inactivity sensing detect the presence or lack of motion. Tap sensing detects single and double taps in any direction. Free-fall sensing detects if the device is falling. These functions can be mapped individually to either of two interrupt output pins.An integrated memory management system with a 32-level first in, first out (FIFO) buffer can be used to store data to minimize host processor activity and lower overall system power consumption.The ADXL343 is supplied in a small, thin, 3 mm × 5 mm × 1 mm, 14-terminal, plastic package.APPLICATIONS Handsets Gaming and pointing devices Hard disk drive (HDD) protection

The AD5689R/AD5687R members of the nanoDAC+™ family are low power, dual, 16-/12-bit buffered voltage output digital-to-analog converters (DACs). The devices include a 2.5 V, 2 ppm/°C internal reference (enabled by default) and a gain select pin giving a full-scale output of 2.5 V (gain = 1) or 5 V (gain = 2). The devices operate from a single 2.7 V to 5.5 V supply, are guaranteed monotonic by design, and exhibit less than 0.1% FSR gain error and 1.5 mV offset error performance. Both devices are available in a 3 mm × 3 mm LFCSP and a TSSOP package.The AD5689R/AD5687R also incorporate a power-on reset circuit and a RSTSEL pin that ensure that the DAC outputs power up to zero scale or midscale and remain there until a valid write takes place. Each part contains a per channel power-down feature that reduces the current consumption of the device to 4 μA at 3 V while in power-down mode.The AD5689R/AD5687R use a versatile serial peripheral interface (SPI) that operates at clock rates up to 50 MHz. Both devices contain a VLOGIC pin that is intended for 1.8 V/3 V/5 V logic.Product Highlights High Relative Accuracy (INL). AD5689R (16-bit): ±2 LSB maximum AD5687R (12-bit): ±1 LSB maximum Low Drift 2.5 V On-Chip Reference. 2 ppm/°C typical temperature coefficient 5 ppm/°C maximum temperature coefficient  Two Package Options. 3 mm × 3 mm, 16-lead LFCSP 16-lead TSSOPApplications Optical transceivers Base station power amplifiers Process control (PLC I/O cards) Industrial automation Data acquisition systems

The AD6641 is a 250 MHz bandwidth digital predistortion (DPD) observation receiver that integrates a 12-bit 500 MSPS ADC, a 16k × 12 FIFO, and a multimode back end that allows users to retrieve the data through a serial port (SPORT), the SPI interface, a 12-bit parallel CMOS port, or a 6-bit DDR LVDS port after being stored in the integrated FIFO memory. It is optimized for outstanding dynamic performance and low power consumption and is suitable for use in telecommunications applications such as a digital predistortion observation path where wider bandwidths are desired. All necessary functions, including the sample-and-hold and voltage reference, are included on the chip to provide a complete signal conversion solution.The on-chip FIFO allows small snapshots of time to be captured via the ADC and read back at a lower rate. This reduces the constraints of signal processing by transferring the captured data at an arbitrary time and at a much lower sample rate. The FIFO can be operated in several user-programmable modes. In the single capture mode, the ADC data is captured when signaled via the SPI port or the use of the external FILL± pins. In the continuous capture mode, the data is loaded continuously into the FIFO and the FILL± pins are used to stop this operation.The data stored in the FIFO can be read back based on several user-selectable output modes. The DUMP pin can be asserted to output the FIFO data. The data stored in the FIFO can be accessed via a SPORT, SPI, 12-bit parallel CMOS port, or 6-bit DDR LVDS interface. The maximum output throughput supported by the AD6641 is in the 12-bit CMOS or 6-bit DDR LVDS mode and is internally limited to 1/8th of the maximum input sample rate. This corresponds to the maximum output data rate of 62.5 MHz at an input clock rate of 500 MSPS.The ADC requires a 1.9 V analog voltage supply and a differential clock for full performance operation. Output format options include twos complement, offset binary format, or Gray code. A data clock output is available for proper output data timing. Fabricated on an advanced SiGe BiCMOS process, the device is available in a 56-lead LFCSP and is specified over the industrial temperature range (−40°C to +85°C). This product is protected by a U.S. patent.APPLICATIONS Wireless and wired broadband communications Communications test equipment Power amplifier linearizationPRODUCT HIGHLIGHTS High Performance ADC Core. Maintains 65.8 dBFS SNR at 500 MSPS with a 250 MHz input. Low Power. Consumes only 695 mW at 500 MSPS. Ease of Use. On-chip 16k FIFO allows the user to target the high performance ADC to the time period of interest and reduce the constraints of processing the data by transferring it at an arbitrary time and a lower sample rate. The on-chip reference and sample-and-hold provide flexibility in system design. Use of a single 1.9 V supply simplifies system power supply design. Serial Port Control. Standard serial port interface supports configuration of the device and customization for the user’s needs. 1.9 V or 3.3 V SPI and Serial Data Port Operation.

The AD7176-2 is a fast settling, highly accurate, high resolution,multiplexed Σ-Δ analog-to-digital converter (ADC) for low bandwidthinput signals. Its inputs can be configured as two fullydifferential or four pseudo differential inputs via the integratedcrosspoint multiplexer. An integrated precision, 2.5 V, low drift(2 ppm/°C), band gap internal reference (with an outputreference buffer) adds functionality and reduces the externalcomponent count.The maximum channel scan data rate is 50 kSPS/channel(settling time of 20 µs), resulting in fully settled data with17 noise free bits. User-selectable output data rates range from5 SPS to 250 kSPS. The resolution increases at lower speeds.The AD7176-2 offers three key digital filters. The fast settlingsinc5 + sinc1 filter maximizes the channel scan rate. The sinc3filter maximizes the resolution for single-channel, low speedapplications. For 50 Hz and 60 Hz environments, the AD7176-2specific filter minimizes the settling times or maximizes therejection of the line frequency. These enhanced filters enablesimultaneous 50 Hz and 60 Hz rejection with a 27 SPS outputdata rate (with a settling time of 36 ms).System offset and gain errors can be corrected on a per channelbasis. This per channel configurability extends to the output datarate used for each channel when using a sinc5 + sinc1 filter. Allswitching of the crosspoint multiplexer is controlled by the ADCand can be configured to automatically control an externalmultiplexer via the GPIO pins.The specified operating temperature range is −40°C to +105°C.The AD7176-2 is housed in a 24-lead TSSOP package.Applications Process control: PLC/DCS modules - Temperature and pressure measurement Medical and scientific multichannel instrumentation Chromatography

The AD7988-1/AD7988-5 are 16-bit, successive approximation,analog-to-digital converters (ADC) that operate from a singlepower supply, VDD. The AD7988-1 offers a 100 kSPS throughput,and the AD7988-5 offers a 500 kSPS throughput. They are lowpower, 16-bit sampling ADCs with a versatile serial interfaceport. On the CNV rising edge, they sample an analog input,IN+, between 0 V to VREF with respect to a ground sense, IN−.The reference voltage, REF, is applied externally and can be setindependent of the supply voltage, VDD.The SPI-compatible serial interface also features the ability todaisy-chain several ADCs on a single 3-wire bus using the SDIinput. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic usingthe separate supply, VIO.The AD7988-1/AD7988-5 generics are housed in a 10-leadMSOP or a 10-lead LFCSP with operation specified from −40°Cto +125°C.Applications Automated test equipment Data acquisition systems Medical instruments Machine automation

The AD7988-1/AD7988-5 are 16-bit, successive approximation,analog-to-digital converters (ADC) that operate from a singlepower supply, VDD. The AD7988-1 offers a 100 kSPS throughput,and the AD7988-5 offers a 500 kSPS throughput. They are lowpower, 16-bit sampling ADCs with a versatile serial interfaceport. On the CNV rising edge, they sample an analog input,IN+, between 0 V to VREF with respect to a ground sense, IN−.The reference voltage, REF, is applied externally and can be setindependent of the supply voltage, VDD.The SPI-compatible serial interface also features the ability todaisy-chain several ADCs on a single 3-wire bus using the SDIinput. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic usingthe separate supply, VIO.The AD7988-1/AD7988-5 generics are housed in a 10-leadMSOP or a 10-lead LFCSP with operation specified from −40°Cto +125°C.Applications Automated test equipment Data acquisition systems Medical instruments Machine automation

The AD8244 is a precision, low power, FET input, quad unity-gain buffer that is designed to isolate very large source impedances from the rest of the signal chain. The 2 pA maximum bias current, near zero current noise, and 10 TΩ input impedance introduce almost no error, even with source impedance well into the megaohms.Many traditional operational amplifier pinouts have a supply pin that is next to the noninverting input. A guard trace must be routed between these pins to avoid leakage currents much larger than the bias current of a FET input op amp. Guard traces can be routed between pins for large packages, such as DIP or even SOIC; however, the board area consumed by these packages is prohibitive for many modern applications. The AD8244 solves this problem with a unique pinout that physically separates the high impedance inputs from the low impedance supplies and outputs of the other buffers. This configuration simplifies guarding while reducing board space, allowing high performance and high density in the same design.The AD8244 design is focused on solving problems specific to buffers. This includes close channel-to-channel matching which allows channels of the AD8244 to be used in differential signal chains with minimal error. With its low voltage noise, wide supply range, and high precision, the AD8244 is also flexible enough to provide high performance anywhere a unity-gain buffer is needed, even with low source resistance.The AD8244 is specified over the industrial temperature range of −40°C to +85°C. It is available in a 10-lead MSOP package.APPLICATIONSBiopotential electrodesMedical instrumentationHigh impedance sensor conditioningFiltersPhotodiode amplifiers

The AD8421 is a low cost, low power, extremely low noise, ultralow bias current, high speed instrumentation amplifier that is ideally suited for a broad spectrum of signal conditioning and data acquisition applications. This product features extremely high CMRR, allowing it to extract low level signals in the presence of high frequency common-mode noise over a wide temperature range. The 10 MHz bandwidth, 35 V/µs slew rate, and 0.6 µs settling time to 0.001% (G = 10) allow the AD8421 to amplify high speed signals and excel in applications that require high channel count, multiplexed systems. Even at higher gains, the current feedback architecture maintains high performance; for example, at G = 100, the bandwidth is 2 MHz and the settling time is 0.8 µs. The AD8421 has excellent distortion performance, making it suitable for use in demanding applications such as vibration analysis. The AD8421 delivers industry-leading 3 nV/√Hz input voltage noise and 200 fA/√Hz current noise with only 2 mA quiescent current, making it an ideal choice for measuring low level signals. For applications with high source impedance, the AD8421 employs innovative process technology and design techniques to provide noise performance that is limited only by the sensor. The AD8421 uses unique protection methods to ensure robust inputs while still maintaining very low noise. This protection allows input voltages up to 40 V from the opposite supply rail without damage to the part. A single resistor sets gains between 1 and 10,000. The reference pin can be used to apply a precise offset to the output voltage.The AD8421 performance is specified from −40°C to +85°C for the 8-lead MSOP and SOIC packages, and from −40°C to 125°C for the 8-lead LFCSP package.Applications Medical instrumentation Precision data acquisition Microphone preamplification Vibration analysis Multiplexed input applications ADC driver

The AD8421 is a low cost, low power, extremely low noise, ultralow bias current, high speed instrumentation amplifier that is ideally suited for a broad spectrum of signal conditioning and data acquisition applications. This product features extremely high CMRR, allowing it to extract low level signals in the presence of high frequency common-mode noise over a wide temperature range. The 10 MHz bandwidth, 35 V/µs slew rate, and 0.6 µs settling time to 0.001% (G = 10) allow the AD8421 to amplify high speed signals and excel in applications that require high channel count, multiplexed systems. Even at higher gains, the current feedback architecture maintains high performance; for example, at G = 100, the bandwidth is 2 MHz and the settling time is 0.8 µs. The AD8421 has excellent distortion performance, making it suitable for use in demanding applications such as vibration analysis. The AD8421 delivers industry-leading 3 nV/√Hz input voltage noise and 200 fA/√Hz current noise with only 2 mA quiescent current, making it an ideal choice for measuring low level signals. For applications with high source impedance, the AD8421 employs innovative process technology and design techniques to provide noise performance that is limited only by the sensor. The AD8421 uses unique protection methods to ensure robust inputs while still maintaining very low noise. This protection allows input voltages up to 40 V from the opposite supply rail without damage to the part. A single resistor sets gains between 1 and 10,000. The reference pin can be used to apply a precise offset to the output voltage.The AD8421 performance is specified from −40°C to +85°C for the 8-lead MSOP and SOIC packages, and from −40°C to 125°C for the 8-lead LFCSP package.Applications Medical instrumentation Precision data acquisition Microphone preamplification Vibration analysis Multiplexed input applications ADC driver