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LT1249CN8 Datasheet(PDF) 2 Page - Linear Technology |
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LT1249CN8 Datasheet(HTML) 2 Page - Linear Technology |
2 / 12 page 2 LT1249 ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION Supply Voltage ....................................................... 27V GTDR Current Continuous ..................................... 0.5A GTDR Output Energy (Per Cycle) ............................. 5 µJ IAC Input Current ................................................. 20mA VSENSE Input Voltage ............................................ VMAX MOUT Input Current.............................................. ±5mA Operating Junction Temperature Range LT1249C ................................................ 0 °C to 100°C LT1249I ........................................... – 40 °C to 125°C Thermal Resistance (Junction-to-Ambient) N8 Package ................................................ 100 °C/W S8 Package ................................................. 120 °C/W Storage Temperature Range ..................–65 °C to 150°C Lead Temperature (Soldering, 10 sec)................. 300 °C ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the operating temperature range, otherwise specifications are at TA = 25°C. Maximum operating voltage (VMAX) = 25V, VCC = 18V, IAC = 100µA, CAOUT = 3.5V, VAOUT = 5V, no load on any outputs, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Overall Supply Current (VCC in Undervoltage Lockout) VCC = Lockout Voltage – 0.2V q 0.25 0.45 mA Supply Current, On 11.5V ≤ VCC ≤ VMAX, CAOUT = 1V q 812 mA VCC Turn-On Threshold q 15.5 16.5 17.5 V VCC Turn-Off Threshold q 9.5 10.5 11.5 V Voltage Amplifier VSENSE Bias Current VSENSE = 0V to 7V q –25 –250 nA Voltage Amp Gain 70 100 dB Voltage Amp Unity-Gain Bandwidth 1.5 MHz Voltage Amp Output High 0 ≤ Source Current ≤ 50µA q 10 12 V Voltage Amp Output Low 0 ≤ Sink Current ≤ 5µA q 0.1 0.4 V Voltage Amp Source Current q 130 260 450 µA Voltage Amp Sink Current Threshold Linear Operation, 2V < VAOUT < 10V q 33 44 57 µA Voltage Amp Sink Current Hysteresis 2V < VAOUT < 10V q 14 22.5 30 µA Current Amplifier Current Amp Offset Voltage q ±2 ±15 mV Current Amp Transconductance ∆ICAOUT = ±40µA q 150 320 550 µmho Current Amp Voltage Gain 2.5V ≤ VCAOUT ≤ 7.5V 500 1000 V/V Current Amp Source Current VMOUT = 1V, IM = 0µV 100 145 220 µA Current Amp Sink Current VMOUT = – 0.3V, IM = 0µA 67 95 125 µA Current Amp Output High 7.4 8.1 V Current Amp Output Low 1.2 2 V ORDER PART NUMBER TJMAX = 125°C, θJA = 100°C/W (N8) TJMAX = 125°C, θJA = 120°C/W (S8) Consult factory for Military grade parts. LT1249CN8 LT1249IN8 LT1249CS8 LT1249IS8 S8 PART MARKING 1249 1249I 1 2 3 4 8 7 6 5 TOP VIEW GND CAOUT MOUT IAC GTDR VCC VSENSE VAOUT S8 PACKAGE 8-LEAD PLASTIC SO N8 PACKAGE 8-LEAD PDIP |
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