The LPV531 is an extremely versatile operational amplifier. A single external resistor gives the system designer the ability to define the quiescent current, gain bandwidth product and output short circuit current. This innovative feature gives the system designer a method to dynamically switch the power level to optimize the performance of the op amp and meet the system design requirements.
The LPV531 can be tailored to a wide variety of applications. It offers the system designer the ability to dynamically trade off supply current for bandwidth by adjusting the current drawn from the ISEL pin using a DAC or switching in different value resistors in series with the ISEL pin. The LPV531 is capable of operating from 73 kHz, consuming only 5 μA, to as fast as 4.6 MHz, consuming only 425 μA. The input offset voltage is relatively independent and therefore is not significantly affected by the chosen power level.
Utilizing a CMOS input stage, the LPV531 achieves an input bias current of 50 fA and a common mode input voltage which extends from the negative rail to within 1.2V of the positive supply. The LPV531's rail-to-rail class AB output stage enables this op amp to offer maximum dynamic range at low supply voltage.
Offered in the space saving 6-pin SOT package, the LPV531 is ideal for use in handheld electronics and portable applications. The LPV531 is manufactured using TI’s advanced VIP50 process.
A fixed supply current/gain bandwidth is available upon request.
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| Number of channels | 1 |
| Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) | 5 |
| Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) | 2.7 |
| Rail-to-rail | In to V-, Out |
| GBW (typ) (MHz) | 4.6 |
| Slew rate (typ) (V/µs) | 2.5 |
| Vos (offset voltage at 25°C) (max) (mV) | 4.5 |
| Iq per channel (typ) (mA) | 0.425 |
| Vn at 1 kHz (typ) (nV√Hz) | 25 |
| Rating | Catalog |
| Operating temperature range (°C) | -40 to 85 |
| Offset drift (typ) (µV/°C) | 0.1 |
| Features | Shutdown |
| Input bias current (max) (pA) | 10 |
| CMRR (typ) (dB) | 95 |
| Iout (typ) (A) | 0.015 |
| Architecture | CMOS |
| Input common mode headroom (to negative supply) (typ) (V) | -0.3 |
| Input common mode headroom (to positive supply) (typ) (V) | -1.2 |
| Output swing headroom (to negative supply) (typ) (V) | 0.095 |
| Output swing headroom (to positive supply) (typ) (V) | -0.03 |
| SOT-23-THN (DDC) | 6 | 8.12 mm² 2.9 x 2.8 |