Datasheet LTC6652 (Analog Devices) - 5

ManufacturerAnalog Devices
DescriptionPrecision Low Drift Low Noise Buffered Reference
Pages / Page20 / 5 — t ypical perForMance characteristics Characteristic curves are similar …
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t ypical perForMance characteristics Characteristic curves are similar for most

t ypical perForMance characteristics Characteristic curves are similar for most

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LTC6652
t ypical perForMance characteristics Characteristic curves are similar for most LTC6652s. Curves from the LTC6652-1.25, LTC6652-2.5 and the LTC6652-5 represent the extremes and typical of the voltage options. Characteristic curves for other output voltages fall between these curves and can be estimated based on their output. 1.25V Output Voltage Temperature Drift 1.25V Line Regulation 1.25V Load Regulation (Sourcing)
1.2510 1.2506 0 3 TYPICAL PARTS 1.2504 –40°C –50 1.2505 125°C 1.2502 25°C TAGE (V) –100 TAGE (V) 125°C 1.2500 1.2500 25°C TAGE CHANGE (ppm) –150 1.2498 OUTPUT VOL REFERENCE VOL 1.2495 1.2496 –40°C –200 OUTPUT VOL 1.2490 1.2494 –250 –80 –40 0 40 80 120 160 0 2 4 6 8 10 12 14 0.1 1 10 TEMPERATURE (°C) INPUT VOLTAGE (V) OUTPUT CURRENT (mA) 6652 G17 6652 G18 6652 G19
1.25V Low Frequency 0.1Hz to 1.25V Output Voltage Noise 1.25V Load Regulation (Sinking) 10Hz Transient Noise Spectrum
400 400 350 125°C ) 300 Hz 300 /√ 250 µV/DIV) 200 TAGE (nV 200 TAGE CHANGE (ppm) 25°C 150 100 OUTPUT NOISE (1 NOISE VOL 100 –40°C OUTPUT VOL 50 0 0 0.1 1 10 TIME (1 SECOND/DIV) 0.01 0.1 1 10 OUTPUT CURRENT (mA) FREQUENCY (kHz) 6652 G22 6652 G20 6652 G21
1.25 Sinking Current Without 1.25 Sinking Current with Output 1.25V Stability with Output Output Capacitor Capacitor Capacitance
10µF 1mA 1mA IOUT IOUT 1µF 0mA 0mA 0.1µF ACITOR 10nF VOUT VOUT REGION OF 500mV/DIV 500mV/DIV 1nF MARGINAL OUTPUT CAP STABILITY 6652 G23 6652 G24 500µs/DIV 500µs/DIV 100pF COUT = 0µF COUT = 1µF NO CAP –5 –1 0 5 LOAD CURRENT (mA) 6652 G16 6652fg For more information www.linear.com/LTC6652 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Available Options Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
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