LT1881/LT1882 Dual and Quad Rail-to-Rail Output, Picoamp Input Precision Op Amps FEATURESDESCRIPTION n Offset Voltage: 50μV Maximum (LT1881A) The LT®1881 and LT1882 op amps bring high accuracy n Input Bias Current: 200pA Maximum (LT1881A) input performance to amplifi ers with rail-to-rail output n Offset Voltage Drift: 0.8μV/°C Maximum swing. Input bias currents and capacitive load driving n Rail-to-Rail Output Swing capabilities are superior to the similar LT1884 and LT1885 n Supply Range: 2.7V to 36V amplifi ers, at the cost of a slight loss in speed. Input n Operates with Single or Split Supplies offset voltage is trimmed to less than 50μV and the n Open-Loop Voltage Gain: 1 Million Minimum low drift maintains this accuracy over the operating n 1mA Maximum Supply Current Per Amplifi er temperature range. Input bias currents are an ultralow n Stable at AV = 1, CL = 1000pF 200pA maximum. n Standard Pinouts The amplifi ers work on any total power supply voltage n Wide Operating Temperature Range: between 2.7V and 36V (fully specifi ed from 5V to ±15V). –55°C to 125°C (LT1882) Output voltage swings to within 40mV of the negative supply and 220mV of the positive supply make these APPLICATIONS amplifi ers good choices for low voltage single supply operation. n Thermocouple Amplifi ers n Bridge Transducer Conditioners Capacitive loads up to 1000pF can be driven directly in n Instrumentation Amplifi ers unity-gain follower applications. n Battery-Powered Systems The dual LT1881 and LT1881A are available with standard n Photo Current Amplifi ers pinouts in S8 and PDIP packages. The quad LT1882 is in a L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear 14-pin SO package. For a higher speed device with similar Technology Corporation. All other trademarks are the property of their respective owners. DC specifi cations, see the LT1884/LT1885. TYPICAL APPLICATION16-Bit Voltage Output DAC on ± 5V SupplyTC VOS Distribution, Industrial Grade 5V 26 V 24 S = ±15V 5V 22 1.65k 40 N8 (1 LOT) 20 144 S8 (2 LOTS) + 18 184 TOTAL PARTS LT1881 16 – 14 12 LT1634 –5V 10 4.096V 8 PERCENT OF UNITS (%) 6 R1 RCOM REF ROFS 4 33pF 2 0 5V 1 –0.9–0.8–0.7–0.6–0.5–0.4–0.3–0.2–0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 INPUT OFFSET VOLTAGE DRIFT (μV/°C) DAC – VOUT 18812 TA01b LT1881 –4.096V TO 4.096V + LTC®1597 –5V 18812 TA01a 18812fb 1
