LT1463 Datasheet | Linear Technology

LT1462/LT1463 Dual/Quad Micropower, 260µW C-Load Picoampere Bias Current JFET Input Op Amps Features s DESCRIPTION The LT ®1462 (dual) and LT1463 (quad) are the first micropower op amps (45µA max per amp) to offer picoampere input bias currents (1p A typ) and unity gain stability for capacitive loads up to 10n F. The output can swing a 10k load to within 1.5V of either supply, just like op amps that require an order of magnitude more supply current. This unique bination of performance makes the LT1462/LT1463 ideal over a wide range of input and output impedances. In the design and testing of the LT1462/LT1463, particular emphasis has been placed on optimizing performance in the low cost SO-8 (dual) and 14-lead SO package (quad) for ± 15V and ± 5V supplies. The input mon mode range includes the positive rail. Slew rate (0.08V/µs min) and gain bandwidth product (125k Hz min) are 100% tested. A full set of matching specifications is also provided. , LTC and LT are registered trademarks of Linear Technology Corporation. C-Load is a trademark of Linear Technology Corporation. s s s s s s s s Input Bias Current: 2p A Max (LT1462A) 20p A Max (LT1462, LT1463) Supply Current per Amplifier: 45µA Max Unity-Gain Stable for C-Load TM Up to 10n F Input mon Mode Range Includes Positive Rail Guaranteed Specs with ± 5V, ± 15V Supplies Gain Bandwidth Product: 175k Hz Typ Slew Rate: 0.13V/µs Typ Guaranteed Matching Specifications Standard Pinout: SO-8, SO-14 Package U APPLICATIONS s s s s Battery-Powered Systems Photocurrent Amplifiers Low Frequency, Micropower Active Filters Low Droop Track-and-Hold Circuits TYPICAL APPLICATION Low Power Logging Amplifier R8 100k D1 1N4148 C1 1n F R5 24k C5 200p F 1 D3 1N4148 R6 100k 12 Q1 2N3904 C5 1µF R9 1M DC OUT C3 0.47µF 7 C4 10µF 8 AC OUT R3 10k + AMP 3 1/4 LT1463 R1 100Ω 5V 2 - + - 1/4 LT1463 11 - 5V R7 10M R10 50k + 1/4 LT1463 - R11 1M PHOTODIODE R2 24k C2 200p F + 1/4 LT1463 14 - R4 10M D2...