The AD7304 / AD7305 are quad, 8-bit DACs that operate from a single +3 V to +5 V supply or ±5 V supplies. The AD7304 has a serial interface, while the AD7305 has a parallel interface. Internal precision buffers swing rail-to-rail. The reference input range includes both supply rails allowing for positive or negative full-scale output voltages. Operation is guaranteed over the supply voltage range of +2.7 V, +5.5 V to ±5 V consuming less than 9 mW from a +3 V supply. The full-scale voltage output is determined by the external reference input voltage applied. The rail-to-rail VREF input to DAC VOUT allows for a full-scale voltage set equal the positive supply VDD, the negative supply VSS or any value in between.The AD7304's doubled-buffered serial-data interface offers high-speed, three-wire, SPI and micro controller compatible inputs using data in (SDI), clock (CLK) and chip select (CS) pins. Additionally, an internal power-on reset sets the output to zero scale.The parallel input AD7305 uses a standard address decode along with the WR control line to load data into the input registers.The double buffered architecture allows all four input registers to be preloaded with new values followed by a LDAC control strobe which copies all the new data into the DAC registers thereby updating the analog output values. The AD7305 is pin-compatible with the popular industry standard AD7226 when operating from less than +5.5 V.An internal power ON reset places both parts in the zero-scale state at turn ON. A 40 µA power shutdown (SHDN) feature is activated on both parts by tri-stating the SDI/SHDN pin on the AD7304, and tri-stating the A0/SHDN address pin on the AD7305. The AD7304 / AD7305 are specified over the extended industrial (−40°C to +85°C), and the automotive (−40°C to +125°C) temperature ranges.

The AD7390 / AD7391 family of 10- and 12-bit voltage-output digital-to-analog converters are designed to operate from a single +3 volt supply. Built using a CBCMOS process, these monolithic DACs offer the user low cost, and ease-of-use in single-supply +3 V volt systems. Operation is guaranteed over the supply voltage range of +2.7 V to +5.5 V consuming less than 100 µA making this device ideal for battery operated applications.The full-scale voltage output is determined by the external reference input voltage applied. The rail-to-rail REFIN to DACOUT allows for a full-scale voltage set equal the positive supply VDD or any value in between.A doubled-buffered serial-data interface offers high-speed, three-wire, SPI and microcontroller compatible inputs using data in (SDI), clock (CLK) and chip select (CS/LD) pins. Additionally, a CLR input sets the output to zero scale at power on or upon user demand.Both parts are offered in the same pin out to allow the user to select the amount of resolution appropriate for their application without circuit card redesign.The AD7390 / AD7391 are specified over the extended industrial (-40°C to +85°C) temperature range. AD7390 / AD7391 are available in plastic DIP, and low profile 1.75 mm height SO-8 surface mount packages. For ultracompact applications the thin 1.1 mm TSSOP-8 package will be available.APPLICATIONS Automotive 0.5 V to 4.5 V Output Span Voltage Portable Communications Digitally Controlled Calibration

The AD7490 is a 12-bit high speed, low power, 16-channel, successive approximation ADC. The part operates from a single 2.7 V to 5.25 V power supply and features throughput rates up to 1 MSPS. The part contains a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 1 MHz.The conversion process and data acquisition are controlled using CS and the serial clock signal, allowing the device to easily interface with microprocessors or DSPs. The input signal is sampled on the falling edge of CS, and conversion is also initiated at this point. There are no pipeline delays associated with the part.The AD7490 uses advanced design techniques to achieve very low power dissipation at high throughput rates. For maximum throughput rates, the AD7490 consumes just 1.8 mA with 3 V supplies, and 2.5 mA with 5 V supplies.By setting the relevant bits in the control register, the analog input range for the part can be selected to be a 0 V to REFIN input or a 0 V to 2 × REFIN input, with either straight binary or twos complement output coding. The AD7490 features 16 single-ended analog inputs with a channel sequencer to allow a preprogrammed selection of channels to be converted sequen-tially. The conversion time is determined by the SCLK frequency because this is also used as the master clock to control the conversion.The AD7490 is available in a 32-lead LFCSP and a 28-lead TSSOP package.APPLICATIONS Multichannel system monitoring Battery-powered equipment Power line monitoring Data acquisition, instrumentation, and process control

The AD7572 is a complete, 12-bit ADC that offers high speed performance combined with low, CMOS power levels. The AD7572 uses an accurate, high speed DAC and comparator in a successive-approximation loop to achieve a fast conversion time.An on-chip, buried Zener diode provides a stable reference voltage to give low drift performance over the full temperature range and the specified accuracy is achieved without any user trims. An on-chip clock circuit is provided, which may be used with a crystal for stand-alone operation, or the clock input may be driven from a external clock source such as a divided-down microprocessor clock. The only other external components required for basic operation of the AD7572 are decoupling capacitors for the supply voltages and reference output.

The AD7655 is a low cost, simultaneous sampling, dual-channel,16-bit, charge redistribution SAR, analog-to-digital converterthat operates from a single 5 V power supply. It contains twolow noise, wide bandwidth, track-and-hold amplifiers that allowsimultaneous sampling, a high speed 16-bit sampling ADC, aninternal conversion clock, error correction circuits, and bothserial and parallel system interface ports. Each track-and-holdhas a multiplexer in front to provide a 4-channel input ADC.The A0 multiplexer control input allows the choice ofsimultaneously sampling input pairs INA1/INB1 (A0 = low) orINA2/INB2 (A0 = high). The part features a very high samplingrate mode (normal) and, for low power applications, a reducedpower mode (impulse) where the power is scaled with thethroughput. Operation is specified from −40°C to +85°C.Product Highlights Multichannel ADC. The AD7655 features 4-channel inputs with two sample-and-hold circuits that allow simultaneous sampling. Fast Throughput. The AD7655 is a 500 kSPS, charge redistribution, 16-bit SAR ADC with internal error correction circuitry. Single-Supply Operation. The AD7655 operates from a single 5 V supply. In impulse mode, its power dissipation decreases with throughput. Serial or Parallel Interface. Versatile parallel or 2-wire serial interface arrangements are compatible with both 3 V and 5 V logic.Applications AC motor control 3-phase power control 4-channel data acquisition Uninterrupted power supplies Communications

The AD7660 is a 16-bit, 100 kSPS, charge redistribution SAR,analog-to-digital converter that operates from a single 5 V powersupply. The part contains an internal conversion clock, error correctioncircuits, and both serial and parallel system interface ports.The AD7660 is hardware factory-calibrated and is comprehensivelytested to ensure ac parameters such as signal-to-noise ratio(SNR) and total harmonic distortion (THD), in addition to themore traditional dc parameters of gain, offset, and linearity.It is fabricated using Analog Devices’ high performance,0.6 micron CMOS process with correspondingly low cost and isavailable in a 48-lead LQFP and a tiny 48-lead LFCSP withoperation specified from –40°C to +85°C.PRODUCT HIGHLIGHTS Fast throughput The AD7660 is a 100 kSPS, charge redistribution, 16-bit SAR ADC with internal error correction circuitry. Superior INL The AD7660 has a maximum integral nonlinearity of 3 LSBs with no missing 16-bit code. Single-supply operation The AD7660 operates from a single 5 V supply and only dissipates 21 µW typical. Its power dissipation decreases with the throughput to, for instance, only 21 µW at a 100 SPS throughput. It consumes 7 µW maximum when in power-down. Serial or parallel interface Versatile parallel or 2-wire serial interface arrangement compatible with both 3 V or 5 V logic.APPLICATIONS Data acquisition Battery-powered systems PCMCIA Instrumentation Automatic test equipment Scanners Medical instruments Process control

The REF19x series precision band gap voltage references use a patented temperature drift curvature correction circuit and laser trimming of highly stable, thin-film resistors to achieve a very low temperature coefficient and high initial accuracy.The REF19x series is made up of micropower, low dropout voltage (LDV) devices, providing stable output voltage from supplies as low as 100 mV above the output voltage and consuming less than 45 μA of supply current. In sleep mode, which is enabled by applying a low TTL or CMOS level to the SLEEP pin, the output is turned off and supply current is further reduced to less than 15 μA.The REF19x series references are specified over the extended industrial temperature range (−40°C to +85°C) with typical performance specifications over −40°C to +125°C for applications, such as automotive.All electrical grades are available in an 8-lead SOIC package; the PDIP and TSSOP packages are available only in the lowest electrical grade.APPLICATIONS Portable instruments ADCs and DACs Smart sensors Solar powered applications Loop-current-powered instruments

The REF19x series precision band gap voltage references use a patented temperature drift curvature correction circuit and laser trimming of highly stable, thin-film resistors to achieve a very low temperature coefficient and high initial accuracy.The REF19x series is made up of micropower, low dropout voltage (LDV) devices, providing stable output voltage from supplies as low as 100 mV above the output voltage and consuming less than 45 μA of supply current. In sleep mode, which is enabled by applying a low TTL or CMOS level to the SLEEP pin, the output is turned off and supply current is further reduced to less than 15 μA.The REF19x series references are specified over the extended industrial temperature range (−40°C to +85°C) with typical performance specifications over −40°C to +125°C for applications, such as automotive.All electrical grades are available in an 8-lead SOIC package; the PDIP and TSSOP packages are available only in the lowest electrical grade.APPLICATIONS Portable instruments ADCs and DACs Smart sensors Solar powered applications Loop-current-powered instruments

The REF19x series precision band gap voltage references use a patented temperature drift curvature correction circuit and laser trimming of highly stable, thin-film resistors to achieve a very low temperature coefficient and high initial accuracy.The REF19x series is made up of micropower, low dropout voltage (LDV) devices, providing stable output voltage from supplies as low as 100 mV above the output voltage and consuming less than 45 μA of supply current. In sleep mode, which is enabled by applying a low TTL or CMOS level to the SLEEP pin, the output is turned off and supply current is further reduced to less than 15 μA.The REF19x series references are specified over the extended industrial temperature range (−40°C to +85°C) with typical performance specifications over −40°C to +125°C for applications, such as automotive.All electrical grades are available in an 8-lead SOIC package; the PDIP and TSSOP packages are available only in the lowest electrical grade.APPLICATIONS Portable instruments ADCs and DACs Smart sensors Solar powered applications Loop-current-powered instruments

The REF19x series precision band gap voltage references use a patented temperature drift curvature correction circuit and laser trimming of highly stable, thin-film resistors to achieve a very low temperature coefficient and high initial accuracy.The REF19x series is made up of micropower, low dropout voltage (LDV) devices, providing stable output voltage from supplies as low as 100 mV above the output voltage and consuming less than 45 μA of supply current. In sleep mode, which is enabled by applying a low TTL or CMOS level to the SLEEP pin, the output is turned off and supply current is further reduced to less than 15 μA.The REF19x series references are specified over the extended industrial temperature range (−40°C to +85°C) with typical performance specifications over −40°C to +125°C for applications, such as automotive.All electrical grades are available in an 8-lead SOIC package; the PDIP and TSSOP packages are available only in the lowest electrical grade.APPLICATIONS Portable instruments ADCs and DACs Smart sensors Solar powered applications Loop-current-powered instruments