JAJSE58E January 2014 – October 2017 LMT87
PRODUCTION DATA.
8.4.3 Capacitive Loads
The LMT87 handles capacitive loading well. In an extremely noisy environment, or when driving a switched sampling input on an ADC, it may be necessary to add some filtering to minimize noise coupling. Without any precautions, the LMT87 can drive a capacitive load less than or equal to 1100 pF, as shown in Figure 11. For capacitive loads greater than 1100 pF, a series resistor may be required on the output, as shown in Figure 12.
Figure 11. LMT87 No Decoupling Required for Capacitive Loads Less Than 1100 pF
Figure 12. LMT87 with Series Resistor for Capacitive Loading Greater Than 1100 pFTable 4. Recommended Series Resistor Values
| CLOAD | MINIMUM RS |
|---|---|
| 1.1 nF to 99 nF | 3 kΩ |
| 100 nF to 999 nF | 1.5 kΩ |
| 1 μF | 800 Ω |