Datasheet

Measurements

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3.1 Expected Values

Table 2 and Table 3 outline the expected values for certain test points on the board to monitor the

functionality of the TSW2110. Depending on the input voltage configuration on the board, some of the

expected values are different. The charge pump draws more current in the 3.3-V input configuration than

the LDO regulator does with the 5-V input.

Table 2. Expected Values With a 5-V Input

System Current 115 mA

Input Voltage 5 V

Amplifier Voltage 4.98 V

Table 3. Expected Values With a 3.3-V Input

System Current 190 mA

Input Voltage 3.3 V

Amplifier Voltage 5.01 V

3.2 Output Waveform

Figure 4. Capture on TSW1400 of the ADS4249EVM, Input Signal Source Is TSW2110

The data captured meets datasheet-type performance for the ADS4249EVM.

TSW2110EVM Evaluation Module (EVM) SLAU438–March 2012

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