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LT1122CS8 Datasheet(PDF) 1 Page - Linear Technology |
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LT1122CS8 Datasheet(HTML) 1 Page - Linear Technology |
1 / 8 page 1 LT1122 Fast Settling, JFET Input Operational Amplifier s 100% Tested Settling Time 340ns Typ to 1mV at Sum Node, 10V Step 540ns Max Tested with Fixed Feedback Capacitor s Slew Rate 60V/ µs Min s Gain Bandwidth Product 14MHz s Power Bandwidth (20Vp-p) 1.2 MHz s Unity Gain Stable; Phase Margin 60 ° s Input Offset Voltage 600 µV Max s Input Bias Current 25 °C 75pA Max 70 °C 600pA Max s Input Offset Current 25 °C 40pA Max 70 °C 150pA Max s Low Distortion DESCRIPTIO S FEATURE The LT1122 JFET input operational amplifier combines high speed and precision performance. A unique poly-gate JFET process minimizes gate series resistance and gate-to-drain capacitance, facilitating wide bandwidth performance, without degrading JFET transis- tor matching. It slews at 80V/ µs and settles in 340ns. The LT1122 is internally compensated to be unity gain stable, yet it has a bandwidth of 14MHz at a supply current of only 7mA. Its speed makes the LT1122 an ideal choice for fast settling 12-bit data conversion and acquisition systems. The LT1122 offset voltage of 120 µV, and voltage gain of 500,000 also support the 12-bit accurate applications. The input bias current of 10pA and offset current of 4pA combined with its speed allow the LT1122 to be used in such applications as high speed sample and hold amplifi- ers, peak detectors, and integrators. s Fast 12-Bit D/A Output Amplifiers s High Speed Buffers s Fast Sample and Hold Amplifiers s High Speed Integrators s Voltage to Frequency Converters s Active Filters s Log Amplifiers s Peak Detectors 12-Bit Voltage Output D/A Converter Large-Signal Response 200ns/DIV AV = –1 1122 TA07 S APPLICATI APPLICATI TYPICAL 0mA TO 2mA OR 4mA + 2 3 6 Cf V 0V TO 10V OUT 12-BIT CURRENT OUTPUT D/A CONVERTER C = 5pF TO 17pF (DEPENDING ON D/A CONVERTER USED) + – f LT1122 LT1122•TA01 |
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