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Pre-Release Products – Analog-to-Digital Converters
These front-line products were on their way to being fully released as of the date shown. Many of them are now fully released. Please click on the model number for the latest information.
All brand or product names mentioned are trademarks or registered trademarks of their respective holders.
May 2007
The AD9271 Analog Front-End for medical imaging, ultrasound, and radar applications comprises eight time-gain control channels—each consisting of a low-noise preamplifier, a variable-gain amplifier, an anti-aliasing filter, and a 12‑bit, 50-Msps analog-to-digital converter—and a 6 × 8 differential crosspoint switch for use in continuous-wave Doppler mode. Each channel features a fully differential signal path with 30-dB gain range and 40-dB maximum gain.
April 2007
The
AD7764/AD7765 high-performance 24-bit, 312-/156-ksps
Sigma-Delta ADCs combine the wide
dynamic range and reduced anti-aliasing requirements inherent in sigma-delta
techniques with excellent dc specifications—making them ideal for high-speed,
high-resolution data acquisition. Guaranteed monotonic to 24 bits, they provide
16-bit integral linearity and 108-dB SNR.
With a 4.096-V external
reference, they have a ±3.25‑V p-p full-scale differential input range. With
their on-chip differential amplifier, reference buffer, pin-programmable
decimation, digital gain register, overrange flag, and digital filter, they
enable a compact, highly-integrated solution.
February 2007
The AD9627 dual Pipelined ADC achieves 12-bit resolution at sampling rates to 150 Msps. Its fully differential analog input accepts signals with full-scale ranges of 1 V p‑p or 2 V p‑p, at frequencies up to 450 MHz. Functionally complete, it includes two high-performance sample-and-hold amplifiers, a voltage reference, and a clock duty-cycle stabilizer, which compensates for imperfect clock-input signals. No-missing-code performance is guaranteed over temperature. With a 70-MHz analog input signal, its specifications include: 69.2-dBc signal-to-noise-plus-distortion (SINAD), 11.4 effective bits (ENOB), and 85-dBc spurious-free dynamic range (SFDR). DC accuracy is also excellent, with only ±2-LSB integral nonlinearity and ±0.4-LSB differential nonlinearity.
December 2006
The AD7150 Capacitance-to-Digital Converter has two input channels that interface with capacitive proximity sensors. A sigma-delta converter measures the capacitance and indicates sensor activation. To insure against false- or non-registering touches, on-chip circuitry automatically calibrates the converter to account for temperature and humidity changes. The part can be programmed—and data can be read—via an I2C-compatible interface.
The AD7356 dual 12-bit, 5-Msps Successive-Approximation ADC accepts differential inputs within a range of ±VREF/2. Twin signal paths, each comprising a wideband track-and-hold and high-speed ADC, allow simultaneous conversion of two inputs. Data is available via a high-speed SPI-compatible interface. Specifications include ±1-LSB max integral- and differential nonlinearity, 69-dB signal-to-noise-plus-distortion (SINAD), and –74-dB total harmonic distortion (THD).
The AD7766 high-performance 24-bit, 125-ksps, over-sampled Successive-Approximation ADC combines the wide dynamic range and reduced anti-aliasing requirements inherent in sigma-delta techniques, with the low power (<20 mW), wide bandwidth, and high speed associated with successive-approximation ADCs. Guaranteed monotonic to 24 bits, it provides 16-bit integral linearity, ±25nV/°C offset drift, and 108-dB SNR at 125 ksps. With a 5-V external reference, it has a full-scale differential input range of ±VREF. Three versions are available, with oversampling ratios of 8:1, 16:1, and 32:1.
The AD7982 Successive-Approximation ADC achieves 18-bit resolution with no missing codes at a 1‑Msps sampling rate. Accepting true differential inputs with a range of ±VREF, it specifies 98-dB signal-to-noise-plus-distortion (SINAD), –117-dB total harmonic distortion (THD), and ±2.5-LSB maximum integral nonlinearity. The successive-approximation architecture ensures that there will be no pipeline delays; and daisy-chaining allows several ADCs to share a single bus. It automatically powers down between conversions, allowing its power consumption to scale with throughput rate.
November 2006
The AD2S1205 complete 12-bit tracking Resolver-to-Digital Converter integrates a programmable sine-wave oscillator that provides the resolver’s excitation signal. Accepting 3.15-V p-p sin- and cos input signals in the 10-kHz to 20-kHz range, the converter uses a Type-II servo loop to track the inputs—and provides digital outputs representing the input angle and velocity. A 1250-rps tracking rate and ±11-arc-minute accuracy can be achieved with a 10.24-MHz clock.
The
AD7980 Successive-Approximation ADC achieves 16-bit resolution with no
missing codes at a
The AD7991/AD7995/AD7999 Successive-Approximation ADCs provide 12-/10-/8-bit resolution at a 188-ksps sampling rate. They accept four single-ended inputs using the power supply voltage as the reference, or three inputs plus an external voltage reference, and their input multiplexer and track-and-hold amplifier can handle frequencies up to 11 MHz. All data and commands are transmitted via a 2-wire I2C-compatible serial interface, which supports standard, fast, and high-speed modes. A sequencer allows automatic conversion of the selected channels. Automatic power-down between conversions minimizes power consumption.
The ADE7169 single-phase Energy-Measurement IC integrates an analog front-end, fixed-function DSP, enhanced 8052-compatible MCU, real-time clock, LCD driver, and all of the peripherals required to make an electronic energy meter with LCD display. Accurate to 0.1% over a 1000-to-1 dynamic range, it surpasses the requirements of the IEC 62053-2x standards. It measures active, reactive, and apparent energy, as well as rms voltage and current. The data, provided in energy-measurement units, is ready for energy billing and other uses.
October 2006
The AD9254 Pipelined ADC provides 14-bit resolution at sampling rates to 150 Msps. Its fully differential analog input accepts signals with full-scale ranges of 1 V p-p or 2 V p-p, at frequencies up to 650 MHz. Functionally complete, it includes a high-performance sample-hold amplifier, an internal voltage reference, and a clock duty-cycle stabilizer, which compensates for imperfect clock-input signals. No-missing-code performance is guaranteed over temperature. With a 70-MHz analog input signal, its specifications include: 70.6-dBc signal-to-noise plus distortion (SINAD), 11.6 effective bits (ENOB), and 83.0-dBc spurious-free dynamic range (SFDR). DC accuracy is also excellent, with only ±1.5-LSB integral nonlinearity and ±0.5-LSB differential nonlinearity.
June 2006
The AD7367 dual 2-input 14-bit, 1-Msps Successive-Approximation ADC features software-selectable input ranges of ±10 V, ±5 V, or 10 V. Twin signal paths—each comprising a 2-input multiplexer, wideband track-and-hold, and high-speed ADC—allow simultaneous conversion of two single-ended or bipolar inputs. Data is available via a high-speed SPI-compatible interface.
