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LM4140

SNVS053F – JUNE 2000 – REVISED SEPTEMBER 2016

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Application Information (continued)

Figure 24. 10-µF ESR Range

8.1.3 Tantalum Capacitors

Surface-mountable solid tantalum capacitors offer a good combination of small physical size for the capacitance

value, and ESR in the range required by the LM4140. The results of testing the LM4140 stability with surface

mount solid tantalum capacitors show good stability with values in the range of 0.1 µF. However, optimum

performance is achieved with a 1-µF capacitor.

Table 2 shows tantalum capacitors that have been verified as suitable for use with the LM4140.

Table 2. 1-µF Surface-Mount Tantalum Capacitor

Selection Guide

MANUFACTURER

PART NUMBER

Kemet

T491A105M010AS

NEC

NRU105N10

Siemens

B45196-E3105-K

Nichicon

F931C105MA

Sprague

293D105X0016A2T

Table 3. 2.2-µF Surface-Mount Tantalum Capacitor

Selection Guide

MANUFACTURER

PART NUMBER

Kemet

T491A225M010AS

NEC

NRU225M06

Siemens

B45196/2.2/10/10

Nichicon

F930J225MA

Sprague

293D225X0010A2T

8.1.4 Aluminum Electrolytic Capacitors

Although probably not a good choice for a production design, because of relatively large physical size, an

aluminium electrolytic capacitor can be used in the design prototype for an LM4140 reference. A 1-µF capacitor

meeting the ESR conditions can be used. If the operating temperature drops below 0°C, the reference may not

remain stable, as the ESR of the aluminium electrolytic capacitor increases, and may exceed the limits indicated

in the figures.