ANALOG Manuals

The AD574A is a complete 12-bit successive-approximation analog-to-digital converter with 3-state output buffer circuitry for direct interface to an 8- or 16-bit microprocessor bus. A high precision voltage reference and clock are included on-chip, and the circuit guarantees full-rated performance.

The AD670 is a low cost 8-bit signal conditioning A/D converter with microprocessor bus interface, 10 �s conversion speed, flexible input stage, no user trims, no missing codes over temperature, single +5 V supply operation, convenient input ranges, 20-pin DIP or surface-mount package, low cost monolithic construction and MIL-STD-883B compliant versions available.

The AD673 is a complete 8-bit successive approximation analog-to-digital converter consisting of a DAC, voltage reference, clock, comparator, successive approximation register (SAR), and 3-state output buffers—all fabricated on a single chip. No external components are required to perform a full accuracy 8-bit conversion in 20 µs. The AD673 incorporates advanced integrated circuit design and processing technologies. It can handle unipolar and bipolar inputs and operates on +5V and -12V to -15V supplies. Additionally, the AD673 is compliant with MIL-STD-883 standards.

AD674B/AD774B is a complete monolithic 12-bit A/D converter with reference, clock, and three-state output buffers. It has an industry standard pinout and is a high speed upgrade for the AD574A. AD674B/AD774B features 8 μs (Max) conversion time (AD774B) and 15 μs (Max) conversion time (AD674B), -5 V, -10 V, 0 V–10 V, and 0 V–20 V input ranges. It complies with commercial, industrial, and military temperature range grades and offers MIL-STD-883-compliant versions.

The AD7569/AD7669 is a complete, 8-bit, analog I/O system on a single monolithic chip. It contains a high speed successive approximation ADC with 2µs conversion time, a track/hold with 200 kHz bandwidth, a DAC and an output buffer ampli- fier with 1µs settling time. A temperature-compensated 1.25 V bandgap reference provides a precision reference voltage for the ADC and the DAC.

This document describes the features and characteristics of ADI products from BDTI C.

The AD7575 is a high-speed 8-bit ADC with a built-in track/hold function. The successive approximation conversion technique is used to achieve a fast conversion time of 5 µs, while the built-in track/hold allows full-scale signals up to 50 kHz (386 mV/µs slew rate) to be digitized. The AD7575 requires only a single +5 V supply and a low-cost, 1.23 V bandgap reference in order to convert an input signal range of 0 to 2 VREF. The AD7575 is designed for easy interfacing to all popular 8-bit microprocessors using standard microprocessor control signals (CS and RD) to control starting of the conversion and reading of the data. The interface logic allows the AD7575 to be easily configured as a memory-mapped device, and the part can be interfaced as SLOW-MEMORY or ROM. All data outputs of the AD7575 are latched and three-state buffered to allow direct connection to a microprocessor data.

The document provides information about BDTI C and ADI companies.

The AD7824 and AD7828 are high speed, multichannel, 8-bit ADCs with a choice of four (AD7824) or eight (AD7828) multiplexed analog inputs. A half-flash conversion technique gives a fast conversion rate of 2.5 µs per channel, and the devices feature a built-in track-and-hold function. They operate on a single 5V supply, have low power consumption, fast conversion rate, and tight error specification.

AD7870/AD7875/AD7876 is a monolithic 12-bit ADC from Analog Devices. It consists of a 2µs track/hold amplifier, an 8µs successive-approximation ADC, a 3V buried Zener reference and versatile interface logic. The ADC features a self-contained internal clock which is laser trimmed to guarantee accurate control of conversion time. No external clock timing components are required; the on-chip clock may be overridden by an external clock if required. The device offers a choice of three data output formats: a single, parallel, 12-bit word; two 8-bit bytes or serial data. Fast bus access times and standard control inputs ensure easy interfacing to modern microprocessors and digital signal processors. All devices operate from ±5 V power supplies. The AD7870 and AD7876 accept input signal ranges of ±3 V and ±10 V, respectively, while the AD7875 accepts a unipolar 0 V to +5 V input range. The device can convert full power signals up to 50 kHz. The AD7870/AD7875/AD7876 feature dc accuracy specifications such as linearity, full-scale and offset error. In addition, the AD7870 and AD7875 are fully specified for dc output and transient peak-to-peak output currents.

The AD7874 is a four-channel simultaneous sampling, 12-bit data acquisition system. It contains a high-speed 12-bit ADC, on-chip reference, on-chip clock, and four track/hold amplifiers. It is ideal for applications such as phased-array sonar and AC motor controllers where preserving the relative phase information is important.

The AD7878 is a fast, complete, 12-bit A/D converter with a versatile DSP interface consisting of an 8-word, first-in, first-out (FIFO) memory and associated control logic. The FIFO memory allows up to eight samples to be digitized before the microprocessor is required to service the A/D converter. The eight words can then be read out of the FIFO at maximum microprocessor speed.

AD872A is a monolithic 12-bit, 10 MSPS analog-to-digital converter with an on-chip, high performance track-and-hold amplifier and voltage reference.