Datasheet LTC6655, LTC6655LN (Analog Devices) - 7

LTC6655/LTC6655LN
TYPICAL PERFORMANCE CHARACTERISTICS Characteristic curves are similar for most voltage options of the LTC6655. Curves from the LTC6655-1.25, LTC6655-2.5 and the LTC6655-5 represent the range of performance across the entire family of references. Characteristic curves for other output voltages fall between these curves and can be estimated based on their voltage output. 1.25V Low Frequency 1.25V Output Voltage 0.1Hz to 10Hz Noise Temperature Drift 1.25V Load Regulation (Sourcing)
1.2504 20 3 TYPICAL UNITS 125°C 25°C 10 –40°C 1.2502 0 200nV/ 1.2500 DIV –10 TAGE CHANGE (ppm) –20 OUTPUT VOLTAGE (V) 1.2498 OUTPUT VOL –30 1.2496 –40 6655 G01 1s/DIV –50 –25 0 25 50 75 100 125 0.001 0.01 0.1 1 10 TEMPERATURE (°C) OUTPUT CURRENT (mA) 6655 G02 6655 G03
1.25V Output Voltage Noise 1.25V Sinking Current with a 1.25V Load Regulation (Sinking) Spectrum 3.3µF Output Capacitor
200 40 125°C 25°C 35 160 –40°C ) I 5mA OUT Hz 30 /√ 0mA 120 25 TAGE (nV 20 VOUT 80 15 10mV/DIV NOISE VOL 10 40 OUTPUT VOLTAGE CHANGE (ppm) 2.7µF C 5 OUT = 3.3µF 200µs/DIV 6655 G06 10µF 100µF 0 0 0.001 0.01 0.1 1 10 0.01 0.1 1 10 100 1000 OUTPUT CURRENT (mA) FREQUENCY (kHz) 6655 G04 6655 G05
1.25V Sourcing Current with a 1.25V Shutdown Supply Current 3.3µF Output Capacitor vs Input Voltage 1.25V VOUT Distribution
14 60 125°C TA = 25°C 12 25°C –40°C 50 I 0mA OUT–5mA 10 TS 40 AR 8 30 VOUT 6 10mV/DIV 20 4 NUMBER OF P SUPPLY CURRENT (µA) COUT = 3.3µF 200µs/DIV 6655 G07 2 10 0 0 0 2 4 6 8 10 12 14 1.2495 1.2498 1.2500 1.2503 1.2505 INPUT VOLTAGE (V) VOUT (V) 6655 G08 6655 G09 Rev. G For more information www.analog.com 7 Document Outline Features Applications Description Typical Application 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