LT1468 Linear Technology, LT1468 Datasheet
LT1468
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LT1468 Summary of contents
Page 1
... ADC buffer, the low distortion and DC accuracy allow full 16-bit AC and DC performance. < 20k S The 22V/ s slew rate of the LT1468 improves large-signal performance in applications such as active filters and instrumentation amplifiers compared to other precision op amps. The LT1468 is manufactured on Linear Technology’s complementary bipolar process ...
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... OUT 0.2V 15V OUT ORDER PART TOP VIEW NUMBER 8 DNC* LT1468CN8 + 7 V LT1468CS8 V 6 OUT LT1468IN8 NULL 5 LT1468IS8 S8 PACKAGE 8-LEAD PLASTIC SO S8 PART MARKING = 130 C/W (N8) 1468 JA = 190 C/W (S8) JA 1468I MIN TYP MAX 175 – 0.3 5 0.6 100 240 ...
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... 2k 1mV 12.5V 15V OUT V = 2.5V 5V OUT 0.2V 15V OUT – (Note 5) 15V LT1468 MIN TYP MAX UNITS 350 kHz 900 kHz 60 90 MHz 55 88 MHz 0.00007 % 0.0015 % ...
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... L 5V 15V 5V Note 4: The LT1468C is guaranteed to meet specified performance from and is designed, characterized and expected to meet these extended temperature limits, but is not tested at – and The LT1468I is guaranteed to meet the extended temperature limits. Note 5: Slew rate is measured between 8V on the output with 12V input for 15V supplies and 2V on the output with 3V input for 5V supplies ...
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... Open-Loop Gain vs Resistive Load 140 15V S 135 130 125 120 115 110 10 100 1k 10k LOAD RESISTANCE ( ) 1468 G08 LT1468 Input Bias Current vs Input Common Mode Voltage 15V – –20 – 40 – 60 – 80 – ...
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... LT1468 W U TYPICAL PERFOR A CE CHARACTERISTICS Output Voltage Swing vs Supply Voltage + – 10k L –2 –3 – 10k – SUPPLY VOLTAGE ( V) 1468 G10 Settling Time to 0.01% vs Output Step 15V 15V ...
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... Slew Rate vs Supply Voltage – – SUPPLY VOLTAGE ( V) LT1468 Common Mode Rejection Ratio vs Frequency 120 100 10M 100M 100 1k 10k 100k 1M FREQUENCY (Hz) 1468 G20 Frequency Response vs Capacitive Load 15V ...
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... LT1468 W U TYPICAL PERFOR A CE CHARACTERISTICS Total Harmonic Distortion + Noise vs Frequency 0.010 V = 15V 600 20V O P-P NOISE BW = 80kHz 0.001 MEASUREMENT LIMIT 0.0001 20 100 1k 10k 20k FREQUENCY (Hz) 1468 G28 Small-Signal Transient 1468 G31 V = 15V S Large-Signal Transient, A ...
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... Typical Performance curves with 2k and 5.1k resistors with a 5pF feedback capacitor. Input Considerations Each input of the LT1468 is protected with a 100 series resistor and back-to-back diodes across the bases of the input devices. If the inputs can be pulled apart, the input current should be limited to less than 10mA with an external series resistor ...
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... Above 20k the input current noise component is larger than the resistor noise. Capacitive Loading The LT1468 drives capacitive loads 100pF in unity gain and 300pF in a gain of –1. When there is a need to drive a larger capacitive load, a small series resistor should be inserted between the output and the load ...
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... U U APPLICATIONS INFORMATION Another key application for LT1468 is buffering the input to a 16-bit A/D converter gain this straight- forward circuit provides uncorrupted AC and DC levels to the converter, while buffering the A/D input sample-and PLIFIED SCHEMATIC + – V PACKAGE ...
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... Single 5V, 16-Bit, 100ksps Sampling ADC Linear Technology Corporation 12 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear-tech.com 10pF R4 50k C2 2pF 2k – LT1468 + V IN LT1468 V OUT 1468 TA03 100kHz Low Distortion Bandpass Filter 1000pF 100kHz Distortion SIGNAL LEVEL R L 22. RMS 2V 1M RMS 3 ...