The AD7991 / AD7995 / AD7999 are 12-/10-/8-bit, low power, successive approximation ADCs with an I2C®-compatible interface. Each part operates from a single 2.7 V to 5.5 V power supply and features a 1 μs conversion time. The track-and-hold amplifier allows each part to handle input frequencies of up to 14 MHz, and a multiplexer allows taking samples from four channels.Each AD7991 / AD7995 / AD7999 provides a 2-wire serial interface compatible with I2C interfaces. The AD7991 and AD7995 come in two versions and each version has an individual I2C address. This allows two of the same devices to be connected to the same I2C bus. Both versions support standard, fast, and high speed I2C interface modes. The AD7999 comes in one version.The AD7991 / AD7995 / AD7999 normally remain in a shutdown state, powering up only for conversions. The conversion process is controlled by a command mode, during which each I2C read operation initiates a conversion and returns the result over the I2C bus.When four channels are used as analog inputs, the reference for the part is taken from VDD; this allows the widest dynamic input range to the ADC. Therefore, the analog input range to the ADC is 0 V to VDD;. An external reference, applied through the VIN3/VREF input, can also be used with this part.PRODUCT HIGHLIGHTS Four single-ended analog input channels, or three single-ended analog input channels and one reference input channel. I2C-compatible serial interface. Standard, fast, and high speed modes. Automatic shutdown. Reference derived from the power supply or external reference. 8-lead SOT-23 packageAPPLICATIONS System monitoring Battery-powered systems Data acquisition Medical instruments

Single-Supply, Multichannel, 125 kSPS, 24-Bit, Sigma-Delta ADC with 10 V Inputs Features:24-bit ADC with integrated AFEFast and flexible output rate: 2.5 SPS to 125 kSPSChannel scan data rate of 24,845 SPS per channel (40.25 s settling)85 dB common mode rejection of 50 Hz and 60 Hz at 20 SPS per channel10 V inputs, either 8 differential or 16 single-endedVIN pin absolute maximum rating 65 VAbsolute input pin voltage up to 20 VMinimum 1 M impedanceOn-chip 2.5 V reference0.12% initial accuracy at 25C, 5 ppm/C (typical) driftInternal or external clockPower suppliesAVDD = 4.5 V to 5.5 VIOVDD = 2 V to 5.5 VTotal current consumption AVDD + IOVDD (IDD) = 10.4 mATemperature range: 40C to +105C3-wire or 4-wire serial digital interface (Schmitt trigger on SCLK)SPI, QSPI, MICROWIRE, and DSP compatible

The AD4030-24 is a 2 MSPS successive approximation register (SAR) analog-to-digital converter (ADC) with Easy Drive?. With a guaranteed maximum ?0.9 ppm integral nonlinearity (INL) and no missing codes at 24-bits, the AD4030-24 achieves unparalleled precision from ?40?C to +125?C. Figure 1 in the data sheet shows the functional architecture of the AD4030-24.A low-drift, internal precision reference buffer eases voltage reference sharing with other system circuitry. The AD4030-24 offers a typical dynamic range of 109 dB when using a 5 V reference. The low noise floor enables signal chains requiring less gain and lower power. A block averaging filter with programmable decimation ratio can increase dynamic range up to 155.5 dB. The wide differential input and common mode ranges allow inputs to use the full ?VREF range without saturating, simplifying signal conditioning requirements and system calibration. The improved settling of the Easy Drive analog inputs broadens the selection of analog front-end components compatible with the AD4030-24. Both single-ended and differential signals are supported.The versatile Flexi-SPI serial peripheral interface (SPI) eases host processor and ADC integration. A wide data clocking window, multiple SDO lanes, and optional DDR data clocking can reduce the serial clock to 10 MHz while operating at a sample rate of 2 MSPS. Echo clock mode and ADC host clock mode relax the timing requirements and simplify the use of digital isolators.The BGA package of the AD4030-24 integrates all critical power supply and reference bypass capacitors, reducing the footprint and system component count, and lessening sensitivity to board layout.APPLICATIONS Automatic test equipment Digital control loops Medical instrumentation Seismology Semiconductor manufacturing Scientific instrumentation

The AD7991 /?AD7995?/?AD7999 are 12-/10-/8-bit, low power, successive approximation ADCs with an I2C?-compatible interface. Each part operates from a single 2.7 V to 5.5 V power supply and features a 1 ?s conversion time. The track-and-hold amplifier allows each part to handle input frequencies of up to 14 MHz, and a multiplexer allows taking samples from four channels.Each AD7991 / AD7995 / AD7999 provides a 2-wire serial interface compatible with I2C interfaces. The AD7991 and AD7995 come in two versions and each version has an individual I2C address. This allows two of the same devices to be connected to the same I2C bus. Both versions support standard, fast, and high speed I2C interface modes. The AD7999 comes in one version.The AD7991 / AD7995 / AD7999 normally remain in a shutdown state, powering up only for conversions. The conversion process is controlled by a command mode, during which each I2C read operation initiates a conversion and returns the result over the I2C bus.When four channels are used as analog inputs, the reference for the part is taken from VDD; this allows the widest dynamic input range to the ADC. Therefore, the analog input range to the ADC is 0 V to VDD;. An external reference, applied through the VIN3/VREF input, can also be used with this part.PRODUCT HIGHLIGHTS Four single-ended analog input channels, or three single-ended analog input channels and one reference input channel. I2C-compatible serial interface. Standard, fast, and high speed modes. Automatic shutdown. Reference derived from the power supply or external reference. 8-lead SOT-23 package.APPLICATIONS System monitoring Battery-powered systems Data acquisition Medical instruments

Variable Resolution, 10-Bit to 16-Bit R/D Converter with Reference Oscillator

16-Bit, 1Msps, Low Power SAR ADC with 97dB SNR Features:1Msps Throughput Rate±0.5LSB INL (Max)Guaranteed 16-Bit No Missing CodesLow Power: 13.5mW at 1Msps, 13.5μW at 1ksps97dB SNR (Typ) at fIN = 2kHz–122dB THD (Typ) at fIN = 2kHzDigital Gain Compression (DGC)Guaranteed Operation to 125°C2.5V SupplyFully Differential Input Range ±VREFVREF Input Range from 2.5V to 5.1VNo Pipeline Delay, No Cycle Latency1.8V to 5V I/O VoltagesSPI-Compatible Serial I/O with Daisy-Chain ModeInternal Conversion Clock16-Lead MSOP and 4mm × 3mm DFN Packages

16-Bit 8/10-Channel, Low Voltage, Low Power, Sigma Delta ADC Features: 8-/10-Channel, High Resolution Σ-Δ ADCs 16-Bit Resolution Factory-Calibrated Single Conversion Cycle Setting Programmable Gain Front End Simultaneous 50 Hz and 60 Hz Rejection VREF Select™ Allows Absolute and Ratiometric Measurement Capability Operation Can Be Optimized for Analog Performance (CHOP = 0) or Channel Throughput (CHOP= 1)

+2.7 V to +5.5 V, Parallel Input, Voltage Output 8-Bit DAC Features: Single 8-Bit DAC 20-PIN SOIC/TSSOP Package +2.7 V to +5.5 V Operation Internal and External Reference Capability DAC Power-Down Function Parallel Interface On-Chip Output Buffer Rail-to-Rail Operation Low Power Operation  1.75 mA max @ 3.3 V Power-Down to 1 µA max @ 25°C

3 V/5 V Low Power, Synchronous Voltage-to-Frequency Converter Features: Synchronous operation Full-scale frequency set by external system clock 8-lead SOT-23 and 8-lead MSOP packages 3 V or 5 V operation Low power: 3 mW (Typ) Nominal input range: 0 to VREF True –150 mV capability without charge pump VREF range: 2.5 V to VDD Internal 2.5 V reference 1 MHz max input frequency Selectable high impedance buffered input Minimal external components required

The LTC2341-18 is an 18-bit, low noise 2-channel simultaneous sampling successive approximation register (SAR) ADC with differential, wide common mode range inputs. Operating from a 5V supply and using the internal reference and buffer, both channels of this SoftSpan? ADC can be independently configured on a conversion-by-conversion basis to accept ?4.096V, 0V to 4.096V, ?2.048V, or 0V to 2.048V signals. One channel may also be disabled to increase throughput on the other channel.The wide input common mode range and 105dB CMRR of the LTC2341-18 analog inputs allow the ADC to directly digitize a variety of signals, simplifying signal chain design. This input signal flexibility, combined with ?4LSB INL, no missing codes at 18 bits, and 95dB SNR, makes the LTC2341-18 an ideal choice for many applications requiring wide dynamic range.The LTC2341-18 supports pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces. Either one or two lanes of data output may be employed in CMOS mode, allowing the user to optimize bus width and throughput.Applications Programmable Logic Controllers Industrial Process Control Medical Imaging High Speed Data Acquisition