The ADAU1978 incorporates four high performance, analog-to-digital converters (ADCs) with 2 V rms capable ac-coupled inputs. The ADCs use a multibit sigma-delta (Σ-Δ) architecture with continuous time front end for low EMI. An I2C/serial peripheral interface (SPI) control port is included that allows a microcontroller to adjust volume and many other parameters. The ADAU1978 uses only a single 3.3 V supply. The part internally generates the required digital DVDD supply. The low power architecture reduces the power consumption. The ADAU1978 is available in a 40-lead LFCSP package. The on-chip PLL can derive the master clock from an external clock input or frame clock (sample rate clock). When fed with the frame clock, it eliminates the need for a separate high frequency master clock in the system.Note that throughout this data sheet, multifunction pins, such as SCL/CCLK, are referred to either by the entire pin name or by a single function of the pin, for example, CCLK, when only that function is relevant. APPLICATIONS Automotive audio systems Active noise cancellation system

The ADD5207 is a white LED driver for backlight applications based on high efficiency, current mode, step-up converter technology. It is designed with a 0.15 Ω, 1.5 A internal switch and a pin-adjustable operating frequency between 600 kHz and 1 MHz.The ADD5207 contains four regulated current sources for uniform LED brightness. Each current source can drive up to 25 mA and the LED-driving current is pin adjustable by an external resistor. The ADD5207 drives up to four parallel strings of multiple series-connected LEDs with a ±1.5% current matching between strings.The ADD5207 provides phase shift PWM brightness control methods. LED dimming control is achieved through the PWM input. The device includes an 8 kHz LED-dimming oscillator for driving each current source. The ADD5207 operates over an input voltage range of 6 V to 21 V, but the device can function with a voltage as low as 5.6 V.The ADD5207 also has multiple safety protection features to prevent damage during fault conditions. If any LED is open, the device automatically disables the faulty current source. The internal soft start circuit prevents a high inrush current during startup. Thermal shutdown protection prevents thermal damage.The ADD5207 is available in a low profile, thermally enhanced, 4 mm × 3 mm × 0.75 mm, 14-lead, RoHS-compliant lead frame chip scale package (LFCSP) and is specified over the industrial temperature range of −25°C to +85°C.APPLICATIONS Notebook PCs UMPCs, and monitor displays

The ADDI9023 is twelve channel vertical driver for CCD imaging applications. It includes eight 3-level drivers and four 2-level drivers. The input configuration can support up to nine individual vertical timing phases and eight shift gate signals. A separate substrate clock channel (SUBCK) is also included. Typical load drive capability for each channel is 3nF.The ADDI9023 is specified over an operating temperature range of −25°C to +85°C.APPLICATIONS Digital Still Cameras Industrial cameras Surveillance cameras Medical imaging

The ADE7978, the ADE7933/ADE7932, and ADE7923 form achipset dedicated to measuring 3-phase electrical energy usingshunts as current sensors.The ADE7933/ADE7932 are isolated, 3-channel sigma-deltaanalog-to-digital converters (Σ-Δ ADCs) for polyphase energymetering applications that use shunt current sensors.TheADE7923 is a nonisolated, 3-channel Σ-Δ ADC for the neutral linethat uses a shunt current sensor. The ADE7932 features two ADCs,and the ADE7933 and ADE7923 feature three ADCs.One channel is dedicated to measuring the voltage across theshunt when a shunt is used for current sensing. This channelprovides a signal-to-noise ratio (SNR) of 67 dB over a 3.3 kHzsignal bandwidth. Up to two additional channels are dedicatedto measuring voltages, which are usually sensed using resistordividers.The unused voltage channels on the neutral ADE7923 can beused for auxiliary voltage measurements. These channels providean SNR of 75 dB over a 3.3 kHz signal bandwidth. One voltagechannel can be used to measure the temperature of the die viaan internal sensor.The ADE7933 and ADE7923 include three channels: onecurrent channel and two voltage channels. The ADE7932includes one current channel and one voltage channel, but isotherwise identical to the ADE7933.The ADE7933/ADE7932 include isoPower®, an integrated,isolated dc-to-dc converter. Based on the Analog Devices, Inc.,iCoupler® technology, the dc-to-dc converter provides theregulated power required by the first stage of the ADCs at a3.3 V input supply. The ADE7933/ADE7932 eliminate the needfor an external dc-to-dc isolation block. The iCoupler chip scaletransformer technology is used to isolate the logic signalsbetween the first and second stages of the ADC. The result is asmall form factor, total isolation solution. The ADE7923 is thenonisolated version of the ADE7933 that can be used forneutral current measurement when isolation from the neutralline is not required.The ADE7933/ADE7932 and ADE7923 contain a digital interfacethat is specially designed to interface with the ADE7978. Usingthis interface, the ADE7978 accesses the ADC outputs andconfiguration settings of the ADE7933/ADE7932 andADE7923.The ADE7933/ADE7932 are available in a 20-lead, Pb-free, widebodySOIC package with increased creepage. The ADE7923 isavailable in a similar 20-lead, Pb-free, wide-body SOIC packagewithout the increased creepage.The ADE7978 is a high accuracy, 3-phase electrical energymeasurement IC with serial interfaces and three flexible pulseoutputs. The ADE7978 can interface with up to four ADE7933/ADE7932 and ADE7923 devices. The ADE7978 incorporates allthe signal processing required to perform total (fundamental andharmonic) active, reactive, and apparent energy measurementand rms calculations, as well as fundamental-only active andreactive energy measurement and rms calculations. A fixedfunction digital signal processor (DSP) executes this signalprocessing.The ADE7978 measures the active, reactive, and apparent energyin various 3-phase configurations, such as wye or delta services,with both three and four wires. The ADE7978 provides systemcalibration features for each phase, gain calibration, and optionaloffset correction. Phase compensation is also available, but it isnot necessary because the currents are sensed using shunts. TheCF1, CF2, and CF3 logic outputs provide a wide selection ofpower information: total active, reactive, and apparent powers;the sum of the current rms values; and fundamental active andreactive powers. The ADE7978 incorporates power quality measurements, suchas short duration low or high voltage detection, short durationhigh current variations, line voltage period measurement, andangles between phase voltages and currents. Two serial interfaces,SPI and I2C, can be used to communicate with the ADE7978.A dedicated high speed interface—the high speed data capture(HSDC) port—can be used in conjunction with I2C to provideaccess to the ADC outputs and real-time power information.The ADE7978 also has two interrupt request pins, IRQ0 andIRQ1, to indicate that an enabled interrupt event has occurred.The ADE7978 is available in a 28-lead, Pb-free LFCSP package.Applications Shunt-based polyphase meters Power quality monitoring Solar inverters Process monitoring Protective devices Isolated sensor interfaces Industrial PLCs

The ADF4159 is a 13 GHz, fractional-N frequency synthesizer with modulation and both fast and slow waveform generation capability. The part uses a 25-bit fixed modulus, allowing subhertz frequency resolution.The ADF4159 consists of a low noise digital phase frequency detector (PFD), a precision charge pump, and a programmable reference divider. The Σ-Δ-based fractional interpolator allows programmable fractional-N division. The INT and FRAC registers define an overall N divider as N = INT + (FRAC/225).The ADF4159 can be used to implement frequency shift keying (FSK) and phase shift keying (PSK) modulation. Frequency sweep modes are also available to generate various waveforms in the frequency domain, for example, sawtooth and triangular waveforms. Sweeps can be set to run automatically, or each step manually triggered by an external pulse. The ADF4159 features cycle slip reduction circuitry, which enables faster lock times without the need for modifications to the loop filter.Control of all on-chip registers is via a simple 3-wire interface. The ADF4159 operates with an analog power supply in the range of 2.7 V to 3.45 V and a digital power supply in the range of 1.62 V to 1.98 V. The device can be powered down when not in use.ApplicationsCommunications infrastructureCommunications test equipmentInstrumentationFMCW radars

The ADCLK948 is an ultrafast clock fanout buffer fabricated on the Analog Devices, Inc., proprietary XFCB3 silicon germanium (SiGe) bipolar process. This device is designed for high speed applications requiring low jitter.The device has two selectable differential inputs via the IN_SEL control pin. Both inputs are equipped with center tapped, differential, 100 Ω on-chip termination resistors. The inputs accept dc-coupled LVPECL, CML, 3.3 V CMOS (single-ended), and ac-coupled 1.8 V CMOS, LVDS, and LVPECL inputs. A VREFx pin is available for biasing ac-coupled inputs. The ADCLK948 features eight full-swing emitter coupled logic(ECL) output drivers. For LVPECL (positive ECL) operation, bias VCC to the positive supply and VEE to ground. For ECL operation, bias VCC to ground and VEE to the negative supply.The output stages are designed to directly drive 800 mV eachside into 50 Ω terminated to VCC -2V for a total differential output swing of 1.6V. The ADCLK948 is available in a 32-lead LFCSP and specified for operation over the standard industrial temperature range of −40°C to +85°C.APPLICATIONS Low jitter clock distribution Clock and data signal restoration Level translation Wireless communications Wired communications Medical and industrial imaging ATE and high performance instrumentation

The ADG1414 is a monolithic complementary metal oxide semiconductor (CMOS) device containing eight independently selectable switches designed on an industrial CMOS (iCMOS®) process. iCMOS is a modular manufacturing process combining high voltage CMOS and bipolar technologies. iCMOS components can tolerate high supply voltages while providing increased performance, dramatically lower power consumption, and reduce the package size.The ADG1414 is a set of octal SPST (single-pole, single-throw) switches controlled via a 3-wire serial interface. On resistance is closely matched between switches and is very flat over the full signal range. Each switch conducts equally well in both directions and the input signal range extends to the supplies.Data is written to these devices in the form of eight bits; each bit corresponds to one channel.The ADG1414 utilizes a versatile 3-wire serial interface that operates at clock rates of up to 50 MHz and is compatible with standard SPI®, QSPI™, MICROWIRE™, and DSP interface standards. The output of the shift register, SDO, enables a number of these parts to be daisy chained.On power-up, all switches are in the off condition, and the internal registers contain all zeros.PRODUCT HIGHLIGHTS 50 MHz serial interface. 9.5 Ω on resistance. 1.6 Ω on-resistance flatness. 24-lead TSSOP and 4 mm × 4 mm LFCSP packages.APPLICATIONS Automatic test equipment Data acquisition systems Battery-powered systems Sample-and-hold systems Audio signal routing Video signal routing Communication systems

The ADG1604 is a complementary metal-oxide semiconductor(CMOS) analog multiplexer and switches one of four inputs toa common output, D, as determined by the 3-bit binary addresslines, A0, A1, and EN. Logic 0 on the EN pin disables the device.Each switch conducts equally well in both directions when onand has an input signal range that extends to the supplies. Inthe off condition, signal levels up to the supplies are blocked.All switches exhibit break-before-make switching action.Inherent in the design is low charge injection for minimumtransients when switching the digital inputs.The ultralow on resistance of these switches make them idealsolutions for data acquisition and gain switching applications wherelow on resistance and distortion is critical. The on resistance profileis very flat over the full analog input range, ensuring excellentlinearity and low distortion when switching audio signals.The CMOS construction ensures ultralow power dissipation,making the devices ideally suited for portable and batterypoweredinstruments.Product Highlights 1.6 Ω maximum on resistance over temperature. Minimum distortion: THD + N = 0.007%. 3 V logic-compatible digital inputs: VINH = 2.0 V, VINL = 0.8 V. No VL logic power supply required. Ultralow power dissipation: <16 nW. 14-lead TSSOP and 16-lead, 4 mm × 4 mm LFCSP.Applications Communication systems Medical systems Audio signal routing Video signal routing Automatic test equipment Data acquisition systems Battery-powered systems Sample-and-hold systems Relay replacements

The ADG1606 and ADG1607 are monolithic iCMOS® analogmultiplexers comprising of 16 single channels and eightdifferential channels, respectively. The ADG1606 switches one of16 inputs to a common output, as determined by the 4-bitbinary address lines (A0, A1, A2, and A3). The ADG1607switches one of eight differential inputs to a common differentialoutput, as determined by the 3-bit binary address lines (A0, A1,and A2). An EN input on both devices enables or disables thedevice. When disabled, all channels switch off. When enabled,each channel conducts equally well in both directions and has aninput signal range that extends to the supplies.The ultralow on resistance and on-resistance flatness of theseswitches make them ideal solutions for data acquisition andgain switching applications where low distortion is critical.iCMOS® construction ensures ultralow power dissipation,making the parts ideally suited for portable and battery-poweredinstruments.Product Highlights 7.5 Ω maximum on resistance over temperature. Minimum distortion: THD + N = 0.04% 3 V logic-compatible digital inputs: VINH = 2.0 V, VINL = 0.8 V. No VL logic power supply required.Applications Communication systems Medical systems Audio signal routing Video signal routing Automatic test equipment Data acquisition systems Battery-powered systems Sample-and-hold systems Relay replacements

The ADG1636 is a monolithic CMOS device containing twoindependently selectable single-pole/double-throw (SPDT)switches. An EN input is used to enable or disable the device.When disabled, all channels are switched off. Each switch conductsequally well in both directions when on and has an input signalrange that extends to the supplies. In the off condition, signallevels up to the supplies are blocked. Both switches exhibitbreak-before-make switching action for use in multiplexerapplications.The ultralow on resistance of these switches make them idealsolutions for data acquisition and gain switching applications wherelow on resistance and distortion is critical. The on resistance profileis very flat over the full analog input range, ensuring excellentlinearity and low distortion when switching audio signals.The CMOS construction ensures ultralow power dissipation,making the devices ideally suited for portable and battery-poweredinstruments.Product Highlights 1.6 Ω maximum on resistance over temperature. Minimum distortion: THD + N = 0.007%. 3 V logic-compatible digital inputs: VINH = 2.0 V, VINL = 0.8 V. No VL logic power supply required. Ultralow power dissipation: <16 nW. 16-lead TSSOP and 16-lead 4 mm × 4 mm LFCSP.Applications Communication systems Medical systems Audio signal routing Video signal routing Automatic test equipment Data acquisition systems Battery-powered systems Sample-and-hold systems Relay replacements