Datasheet LT1635 (Analog Devices) - 8

LT1635
W U TYPICAL PERFOR A CE CHARACTERISTICS Reference Typical Distribution of Initial Accuracy Line Regulation Load Regulation
20 208 200 VS = 5V, 0V V V S = 5V, 0V S = 5V, 0V 18 TA = 25°C T 207 A = 25°C 16 206 0 14 TA = –55°C TA = 25°C 12 205 10 204 – 200 8 T 203 A = 125°C PERCENT OF UNITS 6 REFERENCE OUTPUT (mV) 202 REFERENCE CHANGE (ppm) – 400 4 201 2 0 200 – 600 194 196 198 200 202 204 206 0 2 4 6 8 10 12 14 0 1 2 3 4 REFERENCE VOLTAGE (mV) SUPPLY VOLTAGE (V) SOURCING CURRENT (mA) 1635 G28 1635 G29 1635 G30
Reference Output vs Temperature Output Saturation of Two Typical Units vs Load Current (Sourcing) Reference Amplifier Gain
205 1.5 120 V V S = 5V, 0V V S = ±5V S = 5V, 0V 1.4 100 TA = 25°C 1.3 204 80 1.2 1.1 60 TA = –55°C 203 1.0 40 TA = 25°C 0.9 GAIN (dB) 20 0.8 REFERENCE OUTPUT (mV) 202 TA = 125°C 0 0.7 OUTPUT SATURATION VOLTAGE (V) – 20 0.6 201 0.5 – 40 –50 –25 0 25 50 75 100 125 0 1 2 3 1 10 100 1k 10k 100k 1M 10M TEMPERATURE (°C) SOURCING CURRENT (mA) FREQUENCY (Hz) 1635 G31 1635 G32 1635 G33
W BLOCK DIAGRA
REFERENCE OUTPUT FEEDBACK V + 6 8 7 BALANCE 2 – 5 – 1 REFERENCE INPUTS OP AMP REF AMP 3 + + OUTPUT + 200mV REFERENCE 4 1635 BD V – 8