THS4532_15 Datasheet, PDF (28/58 Pages) Texas Instruments – THS4532 Ultra Low Power, Rail-to-Rail Output, Fully-Differential Amplifier

THS4532
SLOS829A – FEBRUARY 2013 – REVISED JULY 2015
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Feature Description (continued)
Use Equation 4 to calculate the additional current draw.
i_PD
V_CC
=
- (V_L
R_PU
+ V_f
)
(4)
Equation 2 shows that larger values of RPU result in a smaller additional current. A reasonable value of RPU is
500 kΩ where an additional current draw of 5.2 µA is expected while the device is in operation and 1.6 µA when
disabled.
8.4 Device Functional Modes
The THS4532 has two functional modes: full-power mode and power-down mode. The power-down mode
reduces the quiescent current of the device to 500 nA from a typical value of 290 µA with a 5-V supply.
With a turnon time of only 600 ns and a turnoff time of 15 ns, the power-down mode can be used to greatly
reduce the average power consumption of the device without sacrificing system performance.
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