LT1993-4

Total Supply Voltage (V_CCA/V_CCB/V_CCC to
   V_EEA/V_EEB/V_EEC) ...................................................5.5V
Input Current (+INA, INA, +INB, INB,
   VOCM, ENABLE) ..................................................±10mA
Output Current (Continuous) (Note 6)
   +OUT, OUT (DC) ..............................................±100mA
                       (AC) ..............................................±100mA
   +OUTFILTERED, OUTFILTERED (DC) ..................±15mA
                                                     (AC) ..................±45mA
Output Short Circuit Duration (Note 2) ............. Indefi nite
Operating Temperature Range (Note 3) ... 40°C to 85°C
Specifi ed Temperature Range (Note 4) .... 40°C to 85°C
Storage Temperature Range ................... 65°C to 125°C
Junction Temperature ............................................. 125°C
Lead Temperature Range (Soldering 10 sec) .......... 300°C

The LT^®1993-4 is a low distortion, low noise Differential Amplifi er/ADC driver for use in applications from DC to 900MHz. The LT1993-4 has been designed for ease of use, with minimal support circuitry required. Exceptionally low input-referred noise and low distortion products (with either single-ended or differential inputs) make the device an excellent solution for driving high speed 12- bit and 14-bit ADCs. In addition to the normal unfi ltered outputs (+OUT and OUT), the LT1993-4 has a built-in 175MHz differential lowpass fi lter and an additional pair of fi ltered outputs (+OUTFILTERED, OUTFILTERED) to reduce external fi ltering components when driving high speed ADCs. The output common mode voltage is easily set via the V_OCM pin, eliminating either an output transformer or AC-coupling capacitors in many applications.

The LT1993-4 is designed to meet the demanding requirements of communications transceiver applications. It can be used as a differential ADC driver, a general-purpose differential gain block, or in any other application requiring differential drive. The LT1993-4 can be used in data acquisition systems required to function at frequencies down to DC.

The LT1993-4 operates on a 5V supply and consumes 100mA. It comes in a compact 16-lead 3 * 3 QFN package and operates over a 40°C to 85°C temperature range.