Datasheet LT6657 (Analog Devices) - 6

LT6657
Typical perForMance characTerisTics The test conditions are TA = 25°C,VIN = VOUT + 0.5V, VSHDN = 1.6V, IOUT = 0, CIN = 0.1µF, COUT = 1µF. For LT6657-1.25 VSHDN = 1.45V, CIN = 1µF, COUT = 2.7µF, unless otherwise noted. 1.25V Minimum VIN to VOUT 1.25V Minimum VIN to VOUT 1.25V Output Impedance Differential (Sourcing) Differential (Sinking) vs Frequency
10 10 10 TA = –40°C T C A = 25°C OUT = 2.7µF COUT = 10µF T C A = –55°C OUT = 100µF TA = 125°C 1 1 1 OUTPUT CURRENT (mA) TA = 125°C OUTPUT CURRENT (mA) OUTPUT IMPEDANCE (Ω) TA = 25°C TA = –40°C TA = –55°C 0.1 0.1 0 0.0 100 200 300 400 500 0.0 50 100 150 200 250 1 10 100 1k INPUT-OUTPUT VOLTAGE (mV) INPUT-OUTPUT VOLTAGE (mV) FREQUENCY (kHz) 6657 G12 6657 G10 6657 G11
2.5V Output Voltage 2.5V Low Frequency 0.1Hz Output Accuracy Histogram Temperature Drift to 10Hz Noise
700 2.5008 THREE TYPICAL PARTS 600 2.5004 500 400 500nV/DIV) TAGE (V) 2.5000 300 NUMBER OF UNITS 200 OUTPUT VOL 2.4996 OUTPUT NOISE ( 100 0 2.4992 6657 G15 –0.10 –0.05 0 0.05 0.10 –50 –25 0 25 50 75 100 125 150 TIME (1s/DIV) OUTPUT VOLTAGE ERROR (%) TEMPERATURE (°C) 6657 G13 6657 G14
2.5V Output Voltage Noise 2.5V Integrated Noise 2.5V Supply Current Spectrum 10Hz to 10kHz vs Input Voltage
110 100 2.0 COUT = 1µF Cer COUT = 1µF VSHDN = VIN COUT = 5µF Cer 100 COUT = 47µF Tant ) 1.5 Hz /√ 90 V RMS 10 1.0 80 TAGE (nV TED NOISE (µ 0.5 70 1 NOISE VOL INPUT CURRENT (mA) 125°C INTEGRA 60 0.0 25°C –40°C –55°C 50 0.1 –0.5 0.01 0.1 1 10 100 0.01 0.1 1 10 –40 –30 –20 –10 0 10 20 30 40 FREQUENCY (kHz) FREQUENCY (kHz) INPUT VOLTAGE (V) 6657 G16 6657 G17 6657 G18 6657fd 6 For more information www.linear.com/LT6657