LM2479 Datasheet | National Semiconductor

Description The LM2479 is an Integrated 120V triple bias clamp circuit for DC recovery of each of the AC coupled outputs of a CRT driver. It is well matched with the DAC outputs of the LM126X family of pre-amplifiers. Each amplifier has its gain internally set to -18. The IC is packaged in an industry standard 8 lead molded DIP package. n High input impedance n Single supply operation n Matched to the LM126X family of preamplifiers Remended Applications n CRT monitors requiring DC restoration at the cathodes Features n Wide range integrated triple bias clamp Block Diagrams Package Pinout DS101391-2 FIGURE 2. LM2479 Package Pinout Order Number LM2479NA NS Package Number: N08E DS101391-1 FIGURE 1. Simplified Schematic (One Channel) © 2000 National Semiconductor Corporation DS101391 .national. Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage, VCC Input Voltage, VIN Storage Temperature Range, TSTG Lead Temperature (Soldering, < 10sec.) +130V 0V to 5V -65˚C to +150˚C 300˚C ESD Tolerance, Machine Model 200V (Note 3) 110 to 125 50 to 120V 0 to 70˚C Limits of Operating Ranges VCC VOUT, VCC = 120V Ambient Temperature Range, TA DC CLAMP ELECTRICAL CHARACTERISTICS TARGETS AND LIMIT Unless otherwise noted: VCC = +120V, VIN = 2.25VDC, TA = 25˚C. Symbol ICC VOUT VOUT-Range AV LE RIN Spec Parameter Supply Current DC Output Voltage Output Voltage Range DC Voltage Gain Linearity Error Input Resistance See Note 1 VIN Range = 1.0V - 4.0V -16 Conditions All channels 83 Min Typ 2.3 87 53 -18 5 24K -20 % Ω Max 3.5 91 Units m A VDC V Note 1: Linearity Error is the variation in DC gain from VIN = 1.0V to VIN = 4.0V. Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Note 3: Operating Ratings indicate conditions for which the device is functional, but do not...