LMH6723 Datasheet, PDF (19/28 Pages) National Semiconductor (TI) – Single/Dual/Quad 370 MHz 1 mA Current Feedback Op Amp

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LMH6723, LMH6724
SNOSA83I – AUGUST 2003 – REVISED AUGUST 2014
8 Power Supply Recommendations
Follow these steps to determine the maximum power dissipation for the LMH6723/LMH6724:
1. Calculate the quiescent (no-load) power: P_AMP = I_CC * (V_S)
where V_S = V⁺ - V^-
2. Calculate the RMS power dissipated in the output stage: P_D (rms) = rms ((V_S-V_OUT)*I_OUT) where V_OUT and
I_OUT are the voltage and current of the external load and V_s is the supply voltage.
3. Calculate the total RMS power: P_T = P_AMP +P_D
The maximum power that the LMH6723/LMH6724 package can dissipate at a given temperature can be derived
with the following equation:
P_MAX = (150º - T_AMB)/ R_θJA
where
• T_AMB = Ambient temperature (°C)
• R_θJA = Thermal resistance, from junction to ambient, for a given package (°C/W)
(1)
For the SOIC-8 package R_θJA is 166°C/W and for the SOT-23-5 it is 230°C/W.
8.1 ESD Protection
The LMH6723/LMH6724 is protected against electrostatic discharge (ESD) on all pins. The LMH6723 will survive
2000V Human Body Model or 200V Machine Model events.
Under closed loop operation the ESD diodes have no effect on circuit performance. There are occasions,
however, when the ESD diodes will be evident. If the LMH6723/LMH6724 is driven into a slewing condition the
ESD diodes will clamp large differential voltages until the feedback loop restores closed loop operation. Also, if
the device is powered down and a large input signal is applied, the ESD diodes will conduct.
Copyright © 2003–2014, Texas Instruments Incorporated
Product Folder Links: LMH6723 LMH6724
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