LM346 datasheet(10/24 Pages) NSC

10 / 24 page

LM146, LM346

SNOSBH5B – MAY 2004 – REVISED SEPTEMBER 2004

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LM146 TYPICAL PERFORMANCE SUMMARY

The LM146 typical behaviour is shown in Figure 28. The device is fully predictable. As the set current, ISET,

increases, the speed, the bias current, and the supply current increase while the noise power decreases

proportionally and the VOSremains constant. The usable GBW range of the op amp is 10 kHz to 3.5−4 MHz.

Figure 28. LM146 Typical Characteristics

Low Power Supply Operation: The quad op amp operates down to ±1.3V supply. Also, since the internal

circuitry is biased through programmable current sources, no degradation of the device speed will occur.

SPEED VS POWER CONSUMPTION

LM146 vs LM4250 (single programmable). Through Figure 29, we observe that the LM146's power consumption

has been optimized for GBW products above 200 kHz, whereas the LM4250 will reach a GBW of no more than

300 kHz. For GBW products below 200 kHz, the LM4250 will consume less power.

Figure 29. LM146 vs LM4250

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