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LTZ1000 Datasheet(PDF) 6 Page - Linear Technology |
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LTZ1000 Datasheet(HTML) 6 Page - Linear Technology |
6 / 8 page LTZ1000/LTZ1000A 6 1000afd Adjusting Temperature Coefficient in Unstabilized Applications Typical applicaTions – + 7 5 4 3 2 3 120 LT1006 4 6 2 1 70k 15V 1N4148 VOUT+ 0.022µF R1 200* HEATER 1N4148 1 MIN 1 MIN OFF ON * * PULSE HEATER ON AND OFF TO HEAT AND COOL THE REFERENCE. ADJUST R1 FOR MINIMUM VOLTAGE CHANGE THROUGH A TEMPERATURE CYCLE. THE –2mV/°C TEMPCO OF THE VBE CANCELS THE +2mV/°C TEMPCO OF THE ZENER. 1000 TA05 Averaging Reference Voltage for Lower Noise and Better Stability Improving Supply Rejection 1.6k VIN 15V 0.01% OUTPUT 1.6k 30* 30* 150 150 *R = kT q IC 1000 TA03 IC VIN 15V 1.5k 150 SUPPLY REJECTION AT VOUT2 = 3mV/V SUPPLY REJECTION AT VOUT1 = 20mV/V VOUT2 VOUT1 50 1000 TA04 7V Positive Reference Circuit – + – + 2N3904 1N4148 1N4148 A2 LT1013 A1 LT1013 1M 1 1 7 5 3 3 4 4 8 8 5 7 6 1k 2 2 0.1µF 0.002µF 0.1µF 400k* 10k R4 13k R1 120 R3 70k R2 70k R5 1k ZENER – SENSE ZENER + SENSE GROUND ZENER – FORCE HEATER RETURN (TIED TO GROUND) V+ 15V *PROVIDES TC COMPENSATION, DELETE FOR LTZ1000A APPROXIMATE CHANGE IN REFERENCE VOLTAGE FOR A 100ppm (0.01%) CHANGE IN RESISTOR VALUES: R1 R2 R3 R4/R5 RATIO ∆R() 0.012 7 7 ∆R = 0.01% ∆VZ 1ppm 0.3ppm 0.2ppm 1ppm BOTH A1 AND A2 CONTRIBUTE LESS THAN 2µV OF OUTPUT DRIFT OVER A 50°C RANGE 1000 TA06 |
Similar Part No. - LTZ1000_12 |
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Similar Description - LTZ1000_12 |
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