AD768SAerospace 16-Bit, 30 MSPS Digital to Analog Converter | Digital to Analog Converters (DAC) | 1 | Active | The AD768S is a 16-bit, high speed digital-to-analog converter (DAC) that offers exceptional ac and dc performance. The AD768S is manufactured on ADI's Advanced Bipolar CMOS (ABCMOS) process, combining the speed of bipolar transistors, the accuracy of laser-trimmable thin film resistors, and the efficiency of CMOS logic. A segmented current source architecture is combined with proprietary switching technique to reduce glitch energy and maximize dynamic accuracy. Edge triggered input latches and a temperature compensated bandgap reference have been integrated to provide a complete monolithic DAC solution.The AD768S is a current-output DAC with a nominal full-scale output current of 20mA and a 1k(ohm) output impedance. Differential current outputs are provided to support single-ended or differential applications. The current outputs may be tied directly to an output, or fed to the summing junction of a high speed amplifier to provide a buffered voltage output. Also, the differential outputs may be interfaced to a transformer or differential amplifier.The on-chip reference and control amplifier are configured for maximum accuracy and flexibility. The AD76S8 can be driven by the on-chip reference or by a variety of external reference voltages based on the selection of an external resistor. An external capacitor allows the user to optimally trade off reference bandwidth and noise performance.The AD768S operates on ±5V supplies, typically consuming 465 mW of power. |
| Analog to Digital Converters (ADC) | 5 | Active | |
AD769118-Bit, 1.5 LSB INL, 250kSPS PulSAR®Differential ADC in MSOP/QFN | Data Acquisition | 4 | Active | The AD7691 is an 18-bit, charge redistribution, successive approximation, analog-to-digital converter (ADC) that operates from a single power supply, VDD, between 2.3 V and 5 V. It contains a low power, high speed, 18-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. On the CNV rising edge, it samples the voltage difference between the IN+ and IN− pins. The voltages on these pins usually swing in opposite phase between 0 V and REF. The reference voltage, REF, is applied externally and can be set up to the supply voltage.The part’s power scales linearly with throughput.The SPI-compatible serial interface also features the ability, using the SDI input, to daisy-chain several ADCs on a single 3-wire bus and provides an optional busy indicator. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate VIO supply.The AD7691 is housed in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from −40°C to +85°C.ApplicationsBattery-powered equipmentData acquisitionsSeismic data acquisition systemsInstrumentationMedical instruments |
AD769316-Bit, ±0.5 LSB, 500 kSPS PulSAR®Differential A/D Converter in MSOP/QFN | Evaluation Boards | 6 | Active | The AD7693 is a 16-bit, successive approximation analog-to-digital converter (ADC) that operates from a single power supply, VDD. It contains a low power, high speed, 16-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. The reference voltage, VREF, is applied externally and can be set up to the supply voltage, VDD. On the CNV rising edge, it samples the voltage difference between the IN+ and IN− pins. The voltages on these pins swing in opposite phase between 0 V and VREFabout VREF/2.Its power scales linearly with throughput.Using the SDI input, the SPI-compatible serial interface also features the ability to daisy-chain several ADCs on a single 3-wire bus and provides an optional busy indicator. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate VIO supply.The AD7693 is housed in a 10-lead MSOP with operation specified from −40°C to +85°C.APPLICATIONSBattery-powered equipmentData acquisitionsSeismic data acquisition systemsDVMsInstrumentationMedical instruments |
| Data Acquisition | 4 | Active | |
| Analog to Digital Converters (ADCs) Evaluation Boards | 4 | Active | |
| Integrated Circuits (ICs) | 11 | Active | |
| Analog to Digital Converters (ADC) | 12 | Active | The AD7703 is a 20-bit ADC that uses a Σ-Δ conversion technique. The analog input is continuously sampled by an analog modulator whose mean output duty cycle is proportional to the input signal. The modulator output is processed by an on-chip digital filter with a six-pole Gaussian response, which updates the output data register with 16-bit binary words at word rates up to 4 kHz. The sampling rate, filter corner frequency, and output word rate are set by a master clock input that may be supplied externally, or by a crystal controlled on-chip clock oscillator.The inherent linearity of the ADC is excellent and endpoint accuracy is ensured by self-calibration of zero and full scale, which may be initiated at any time. The self-calibration scheme can also be extended to null system offset and gain errors in the input channel.The output data is accessed through a flexible serial port, which has an asynchronous mode compatible with UARTs and two synchronous modes suitable for interfacing to shift registers or the serial ports of industry-standard microcontrollers.CMOS construction ensures low power dissipation, and a power-down mode reduces the idle power consumption to only 10 µW.PRODUCT HIGHLIGHTSThe AD7703 offers 20-bit resolution coupled with outstanding 0.0003% accuracy.No missing codes ensures true, usable, 20-bit dynamic range, removing the need for programmable gain and level-setting circuitry.The effects of temperature drift are eliminated by on-chip self-calibration, which removes zero and gain error. External circuits can also be included in the calibration loop to remove system offsets and gain errors.Flexible synchronous/asynchronous interface allows the AD7703 to interface directly to the serial ports of industry-standard microcontrollers and DSP processors.Low operating power consumption and an ultralow power standby mode make the AD7703 ideal for loop-powered remote sensing applications, or battery-powered portable instruments.APPLICATIONSIndustrial Process ControlWeigh ScalesPortable InstrumentationRemote Data Acquisition |
| Data Acquisition | 10 | Active | |
| Integrated Circuits (ICs) | 12 | Active | |
