TLE2426

ąą TLE2426, TLE2426Y THE RAIL SPLITTER" PRECISION VIRTUAL GROUND SLOS098D − AUGUST 1991 − REVISED MAY 1998 D 1/2 VI Virtual Ground for Analog Systems D Self-Contained 3-terminal TO-226AA Package D Micropower Operation . . . 170 µA Typ, VI = 5 V D Wide VI Range . . . 4 V to 40 V D High Output-Current Capability − Source . . . 20 mA Typ − Sink . . . 20 mA Typ description In signal-conditioning applications utilizing a single power source, a reference voltage equal to one-half the supply voltage is required for termination of all analog signal grounds. Texas Instruments presents a precision virtual ground whose output voltage is always equal to one-half the input voltage, the TLE2426 “rail splitter.” Voltage − V D Excellent Output Regulation − −45 µV Typ at IO = 0 to −10 mA − +15 µV Typ at IO = 0 to + 10 mA D Low-Impedance Output . . . 0.0075 Ω Typ D Noise Reduction Pin (D, JG, and P Packages Only) INPUT/OUTPUT TRANSFER CHARACTERISTICS 10 VI 8 VI VO VO + VI 2 6 4 VO The unique combination of a high-performance, micropower operational amplifier and a precision- 2 trimmed divider on a single silicon chip results in a precise VO/VI ratio of 0.5 while sinking and sourcing current. The TLE2426 provides a low- impedance output with 20 mA of sink and source capability while drawing less than 280 µA 0 0 0.25 0.5 0.75 1 t − Time − s of supply current over the full input range of 4 V to 40 V. A designer need not pay the price in terms of board space for a con...