The AD8330 is a wideband variable gain amplifier for applicationsrequiring a fully differential signal path, low noise, well-definedgain, and moderately low distortion, from dc to 150 MHz. Theinput pins can also be driven from a single-ended source. Thepeak differential input is ?2 V, allowing sine wave operation at1 V rms with generous headroom. The output pins can drivesingle-sided loads essentially rail-to-rail. The differential outputresistance is 150 ?. The output swing is a linear function of thevoltage applied to the VMAG pin that internally defaults to 0.5 V,providing a peak output of ?2 V. This can be raised to 10 V p-p,limited by the supply voltage.The basic gain function is linear-in-dB, controlled by the voltageapplied to Pin VDBS. The gain ranges from 0 dB to 50 dB forcontrol voltages between 0 V and 1.5 V?a slope of 30 mV/dB.The gain linearity is typically within ?0.1 dB. By changing thelogic level on Pin MODE, the gain decreases over the same range,with an opposite slope. A second gain control port is providedat the VMAG pin and allows the user to vary the numeric gainfrom a factor of 0.03 to 10. All the parameters of the AD8330have low sensitivities to temperature and supply voltages. UsingVMAG, the basic 0 dB to 50 dB range can be repositioned toany value from 20 dB higher (that is, 20 dB to 70 dB) to at least30 dB lower (that is, ?30 dB to +20 dB) to suit the application,thereby providing an unprecedented gain range of over 100 dB.A unique aspect of the AD8330 is that its bandwidth and pulseresponse are essentially constant for all gains, over both thebasic 50 dB linear-in-dB range, but also when using the linearin-magnitudefunction. The exceptional stability of the HFresponse over the gain range is of particular value in those VGAapplications where it is essential to maintain accurate gain lawconformanceat high frequencies.An external capacitor at Pin OFST sets the high-pass corner ofan offset reduction loop, whose frequency can be as low as 5 Hz.When this pin is grounded, the signal path becomes dc-coupled.When used to drive an ADC, an external common-mode controlvoltage at Pin CNTR can be driven to within 0.5 V of either groundor VS to accommodate a wide variety of requirements. By default,the two outputs are positioned at the midpoint of the supply, VS/2.Other features, such as two levels of power-down (fully off anda hibernate mode), further extend the practical value of thisexceptionally versatile VGA.The AD8330 is available in 16-lead LFCSP and 16-lead QSOPpackages and is specified for operation from ?40?C to +85?C.Applications Pre-ADC signal conditioning 75 ? cable driving adjust AGC amplifiers

The AD8331 is a single channel, ultralow noise, linear-in-dB, variable gain amplifier (VGA). Optimized for ultrasound systems, it is usable as a low noise variable gain element at frequencies up to 120 MHz.Included is an ultralow noise preamplifier (LNA), an X-AMP? VGA with 48 dB of gain range, and a selectable gain postamplifier with adjustable output limiting. The LNA gain is 19 dB with a single-ended input and differential outputs. Using a single resistor, the LNA input impedance can be adjusted to match a signal source without compromising noise performance.The 48 dB gain range of the VGA makes these devices suitable for a variety of applications. Excellent bandwidth uniformity is maintained across the entire range. The gain control interface provides precise linear-in-dB scaling of 50 dB/V for control voltages between 40 mV and 1 V. Factory trim ensures excellent part-to-part and channel-to-channel gain matching. Differential signal paths result in superb second- and third-order distortion performance and low crosstalk.The operating temperature range is -40?C to +85?C. The AD8331 is available in a 20-lead QSOP package.The AD8331 is a single version of the dual AD8332 and quad AD8334.For information on specs, see the AD8331/AD8332/AD8334 datasheet.Applications Ultrasound and sonar time-gain controls High performance automatic gain control (AGC) systems I/Q signal processing High speed, dual ADC drivers

The AD8335 is a quad variable gain amplifier (VGA) with low noise preamplifier intended for cost and power sensitive applications. Each channel features a gain range of 48 dB, fully differential signal paths, active input preamplifier matching, and user-selectable maximum gains of 46 dB and 38 dB. Individual gain controls are provided for each channel.The preamplifier (PrA) has a single-ended to differential gain of ?8 (18.06 dB) and accepts input signals 625 mV p-p. PrA noise is 1.2 nV/?Hz and the combined input referred voltage noise of the PrA and VGA is 1.3 nV/?Hz at maximum gain.Assuming a 20 MHz noise bandwidth (NBW), the Nyquist frequency for a 40 MHz ADC, the input SNR is 92 dB. The HLxx pin optimizes the output SNR for 10-bit and 12-bit ADCs with 1 V p-p or 2 V p-p full-scale (FS) inputs.Channel 1 and Channel 2 are enabled through the EN12 pin and Channel 3 and Channel 4 are enabled through the EN34 pin. For VGA only applications, the PrAs can be powered down, significantly reducing power consumption.The AD8335 is available in a 64-lead lead frame chip scale package (9 mm ? 9 mm) for the industrial temperature range of ?40?C to +85?C.ApplicationsMedical imaging (ultrasound, gamma cameras)SonarTest and measurementPrecise, stable wideband gain controlData Sheet, Rev A, 08/2008

The AD8336 is a low noise, single-ended, linear in dB, general-purpose variable gain amplifier, usable over a large range of supply voltages. It features an uncommitted preamplifier with a usable gain range of 6 dB to 26 dB. The VGA gain range is 0 dB to 60 dB, with absolute gain limits of ?26 dB to +34 dB. When the preamplifier gain is adjusted for 12 dB, the combined 3 dB bandwidth of the preamplifier and VGA is 100 MHz, and the amplifier is fully usable to 80 MHz. With ?5 V supplies, the maximum output swing is 7 V p-p.Because of the X-AMP? architecture, frequency response is maintained across the entire gain range of the VGA. The differential gain control interface provides precise linear in dB gain scaling of 50 dB/V over the temperature span of ?55?C to +125?C and is simple to interface with a variety of external sources.The large supply voltage range makes the AD8336 suited for industrial medical applications and video circuits. Dual-supply operation enables bipolar input signals, such as those generated by photodiodes or photomultiplier tubes.The fully independent voltage feedback preamplifier allows both inverting and noninverting gain topologies. The AD8336 can be used within the specified gain range of ?14 dB to +60 dB by selecting a preamplifier gain between 6 dB and 26 dB and choosing appropriate feedback resistors. For the nominal preamplifier gain of 4?, the overall gain range is ?14 dB to +46 dB.If required, quiescent power is limited to a safe level by asserting the PWRA pin.APPLICATIONS Industrial process controls High performance AGC systems I/Q signal processing Video Industrial and medical ultrasound Radar receivers

DC1016A-B Demo Board for: LT6557 500MHz, 2200V/µs Gain of 2, Single Supply Triple Video Amplifier with Input Bias Control LT6558 550MHz, 2200V/µs Gain of 1, Single Supply Triple Video Amplifier with Input Bias Control

DC1063A: Demo Board for the LT6559 Low Cost 5V/±5V 300MHz Triple Video Amplifier in 3mm × 3mm QFN.

The LTC6561 is a low-noise four-channel, transimpedance amplifier (TIA)with 220MHz bandwidth. The LTC6561 multi-channel transimpedance amplifier?s low noise, high transimpedance, and low power dissipation are ideal for LIDAR receivers using Avalanche Photodiodes (APDs). The amplifier features 74k? transimpedance gain and 30?A linear input current range. Using an APD input circuit with a total capacitance of 2pF, the input current noise density is 4.5pA/?Hz at 200MHz. With lower capacitance, noise and bandwidth improve further. Only a 5V single supply is needed and the device consumes only 200mW. Utilizing the internal 4-to-1 MUX along with the LTC6561?s output MUX; multiple 4-channel LTC6561 devices can be combined to directly interface with 8, 12, 16 and 32-channel APD arrays. The LTC6561?s fast overload recovery and fast channel switchover make it well suited for LIDAR receivers with multiple APDs. Its single-ended output can swing 2VP-P on a 100? load. While its low impedance op amp-style output can drive back-terminated 50? cables.The LTC6561 is packaged in a compact 4mm ? 4mm 24-pin leadless QFN package with an exposed pad for thermal management and low inductance.Applications LIDAR Receiver Industrial Imaging

DC453B-B: Demo Board for LT1970A 500mA Power Op Amp with Adjustable Precision Current Limit.

The ADA4530-1 is a femtoampere (10?15 A) level input bias current operational amplifier suitable for use as an electrometer that also includes an integrated guard buffer. It has an operating voltage range of 4.5 V to 16 V, enabling it to operate in conventional 5 V and 10 V single supply systems as well as ?2.5 V and ?5 V dual supply systems.It provides ultralow input bias currents that are production tested at 25?C and at 125?C to ensure the device meets its performance goals in user systems. The integrated guard buffer isolates the input pins from leakage in the printed circuit board (PCB), minimizes board component count, and enables easy system design. The ADA4530-1 is available in an industry-standard surface-mount 8-lead SOIC package with a unique pinout optimized to prevent signals from coupling between the sensitive input pins, the power supplies, and the output pin while enabling easy routing of the guard ring traces.The ADA4530-1 also offers low offset voltage, low offset drift, and low voltage and current noise needed for the types of applications that require such low leakages.To maximize the dynamic range of the system, the ADA4530-1 has a rail-to-rail output stage that can typically drive to within 30 mV of the supply rails under a 10 k? load.The ADA4530-1 operates over the ?40?C to +125?C industrial temperature range and is available in an 8-lead SOIC package.Applications Laboratory and analytical instrumentation: spectrophotometers, chromatographs, mass spectrometers, and potentiostatic and amperostatic coulometry Instrumentation: picoammeters and coulombmeters Transimpedance amplifier (TIA) for photodiodes, ion chambers, and working electrode measurements High impedance buffering for chemical sensors and capacitive sensors

The LTC2063/LTC2064/LTC2065 are single, dual, and quad low power, zero-drift, 20kHz amplifiers. The LTC2063/LTC2064/LTC2065 enable high resolution measurement at extremely low power levels.Typical supply current is 1.4?A per amplifier with a maximum of 2?A. The available shutdown mode has been optimized to minimize power consumption in duty-cycled applications and features low charge loss during power-up, reducing total system power.The LTC2063/LTC2064/LTC2065?s self-calibrating circuitry results in very low input offset (5?V max) and offset drift (0.02?V/?C). The maximum input bias current is only 20pA and does not exceed 100pA over the full specified temperature range. The extremely low input bias current of the LTC2063/LTC2064/LTC2065 allows the use of high value power-saving resistors in the feedback network.With its ultralow quiescent current and outstanding precision, the LTC2063/LTC2064/LTC2065 can serve as a signal chain building block in portable, energy harvesting and wireless sensor applications.The LTC2063 is available in 6-lead SC70 and 5-lead TSOT-23 packages. The LTC2064 is available in 8-lead MSOP and 10-lead DFN packages. The LTC2065 is available in 14-lead TSSOP and 16-lead 3mm ? 3mm QFN packages. These devices are fully specified over the ?40?C to 85?C and ?40?C to 125?C temperature ranges.Applications Signal Conditioning in Wireless Mesh Networks Portable Instrumentation Systems Low-Power Sensor Conditioning Gas Detection Temperature Measurement Medical Instrumentation Energy Harvesting Applications Low Power Current Sensing