Analog Devices, Inc.
Norwood, MA 02062-9106
Aug 15, 2008 Consuming less than 120 mW of power on single 3.3 V supply, single channel ADA4939-1 and dual channel ADA4939-2 differential amplifiers achieve 82 dB SFDR at 70 MHz. Operating over -40 to 105°C temperature range for both 3.3 and 5 V operation, units feature input voltage noise of 2.3 nV/rt Hz, -3 dB bandwidth of 1.4 GHz, and slew rate of 5,000 V/µS. Model ADA4939-2 can drive dual ADCs used in I/Q demodulation schemes, and offers low cross-talk of -80 dB at 100 MHz.

Linear Technology Corp.
Milpitas, CA 95035-7417
May 22, 2008 With guaranteed matched gain of ±0.25 dB and matched phase of ±0.1°, Model LTC6420-20 minimizes errors in multichannel systems. Unit provides fixed gain of 20 dB with -84 dBc 3rd-order intermodulation distortion at 100 MHz input frequency. Input voltage noise is 2.2 nV/√Hz, including internal gain-setting resistors. Housed in 3 x 4 mm QFN package, 1.8 GHz Model LTC6420-20 processes signals from DC-300 MHz, while 40 mA, 1.3 GHz Model LTC6421-20 is optimized for input frequencies of DC-140 MHz.

Analog Devices, Inc.
Norwood, MA 02062-9106
Nov 26, 2007 With 86 dB CMRR (common mode rejection ratio), Models 10 MHz AD8270 and 12 MHz AD8273 precision dual-channel difference amplifiers feature 30 and 25 V/µs slew rates, respectively. Units come with internal gain-setting resistors that allow engineers to set gain with no external components. Suited for industrial, avionics, and audio applications, Model AD8270 is available in 4 x 4 mm LFCSP package, while Model AD8273 comes in 54 mm square SOIC package.

Linear Technology Corp.
Milpitas, CA 95035-7417
Sep 12, 2007 Model LTC6406 fully differential ADC driver features rail-to-rail input stage and independently adjustable output common mode range. Operating on supplies from 2.7-3.5 V, device features differential outputs that each swing from near ground to 2 V. It achieves 90 dBc distortion for input frequencies from DC to 20 MHz and nearby -70 dBc distortion from DC to 50 MHz. Current consumption is 18 mA which can be reduced to 300 µA during periods of inactivity.

Linear Technology Corp.
Milpitas, CA 95035-7417
May 31, 2007 Operating from single 3V supply, LTC6400-20 and LTC6401-20 include gain setting resistors and VOCM pin for setting output common mode voltage to match input range of ADC. Model LTC6400-20 provides fixed gain of 20 dB with -93 dBc third-order intermodulation distortion performance and noise figure of 6.5 dB for 140 MHz input frequency. For input frequencies up to 70 MHz, LTC6401-20 maintains same low noise performance and offers -90 dBc distortion performance.

Linear Technology Corp.
Milpitas, CA 95035-7417
Feb 06, 2007 Featuring user-programmable current limit, LTC3823 synchronous step-down DC/DC controller provides true differential remote output voltage sensing of positive and negative terminals. It can operate at duty cycles from 2-90% and develop output voltages from 0.6 V to 90% VIN. Input range is 4.5-30 V, and constant on-time architecture allows control loop to respond instantly to load steps. IC uses current mode control and can be configured for PLL frequency synchronization.

Linear Technology Corp.
Milpitas, CA 95035-7417
Dec 11, 2006 Integrating precision gain-setting resistors on-chip, Model LT6402 and LT6411 differential amplifiers can be used as high-speed ADC drivers, twisted-pair line drivers, and single-ended to differential signal converters. Model LT6402 has -3 dB bandwidth of 300 MHz, and is available in 6, 12, and 20 dB fixed gain options. With -3 dB bandwidth of 650 MHz and slew rate of 3,300 V/µs, Model LT6411 dual-selectable gain amplifier has supply range of ±2.25V to ±6.3V.

Linear Technology Corp.
Milpitas, CA 95035-7417
Nov 21, 2006 With -3 dB bandwidth of 300 MHz, LT6402 differential amplifier provides on-chip filter and output common mode voltage pin, and is available in 6, 12, and 20 dB fixed gain options. Model LT6411 dual-selectable gain amplifier has -3 dB bandwidth of 650 MHz and slew rate of 3,300 V/µs, with independently selectable gains, consuming 16 mA supply current. Device can be disabled when inactive, dropping consumption to less than 0.35 mA max per amplifier.

National Semiconductor Corp.
Santa Clara, CA 95051-0695
Feb 13, 2006 Fixed-gain differential amplifiers LMP8275, LMP8277, and LMP8276 feature -2 to 27 V input common-mode voltage range and supply voltage range of 4.75-5.5 V. Tri-temperature testing ensures low temperature coefficient for offset voltage drift. Gain is fixed at 20 for high common-mode LMP8275/6 and at 14 for high common-mode bidirectional LMP8277. Low offset voltage of less than 2 mV and offset drift of less than 30 microV/°C allows differential signal conditioning.

Texas Instruments, Inc. (TI)
Dallas, TX 75243-4136
Nov 21, 2005 Manufactured in MSOP8 package, INA159 level-shifting difference amplifier has gain of 0.2 and is designed to interface ±10 V signals to single supply ADCs. Split reference connection simplifies biasing at one half supply or reference and eliminates need for additional op amp. Included amplifier is suited for driving up to 14-bit ADCs. Along with 1.5 MHz bandwidth and 15 V/µs slew rate, product has single supply voltage range from 2.7-5.5 V.

Texas Instruments, Inc., Semiconductors
Dallas, TX 75243
Nov 18, 2005 Designed for 3.3-5 V DAQ systems, high-gain THS4508 and unity gain stable THS4511 and THS4513 feature fully differential architecture and 5 V single supply operation. Bandwidths range from 1,600-2,000 MHz, with slew rates from 4,900-6,400 V/µs. Suited for operation over -40 to +85°C range, all models come in 16-pin QFN package and deliver noise and distortion performance that enables designer to ensure accurate low-level signal measurements.

Linear Technology Corp.
Milpitas, CA 95035-7417
May 18, 2005 Manufactured in 16-lead, 3 x 3 x 0.8 mm QFN package, LT1993 fully differential amplifier series is available with fixed gain options of 2 (6 dB), 4 (12 dB), and 10 (20 dB) over 700–900 MHz bandwidth. Products enable designers to directly drive ADCs while minimizing support circuitry. Along with adjustable output common mode voltage, amps feature built-in, user-adjustable filter and harmonic distortion of -70 dBc.

Texas Instruments, Inc. (TI)
Dallas, TX 75243-4136
Jan 26, 2005 Available in 16-pin QFN package, 1.9 GHz THS4509 leverages BiCom-III complementary bipolar silicon-germanium process, which integrates NPN and PNP bipolar transistors. Unit delivers input referred voltage noise of 2.0 nV/rtHz and 1% settling time of 2 ns with 2 V output step. Other features include large signal bandwidth of 1.5 GHz, small signal bandwidth of 1.9 GHz, slew rate of 6,600 V/µs and 0.65 mA power-down mode.

Linear Technology Corp.
Milpitas, CA 95035-7417
Oct 06, 2003 Model LT6552 3.3 V wideband difference amplifier minimizes effects of high-frequency noise pickup, allowing signals to be sent over long lines without corruption by external sources. Common mode rejection is >60 dB at 10 MHz. Unit comes in 3 x 3 mm DFN package and features 75 MHz -3 dB bandwidth, 600 V/µs slew rate, and ±70 mA output current, making it suitable for driving cables. Output swings rail-to-rail, providing maximum output dynamic range.

Linear Technology Corp.
Milpitas, CA 95035-7417
Jun 10, 2003 Available in 8-pin MSOP package, fully differential LTC1992-2 has high-stability internal gain setting resistors that provide fixed gain of 2 with better than ±0.3% gain accuracy over -40 to +85°C temperature range. Adjustable output common mode voltage is independent of input common mode voltage, and internal architecture uses separate feedback paths for differential signal and common mode signal. Product is stable for capacitive loads up to 10,000 pF.