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TLV320ADC6140: Input voltage range for DC coupled inputs?

James Webb
Prodigy 10 points
Part Number: TLV320ADC6140

Good afternoon all,

I'd like to use the TLV320ADC6140 with DC coupled differential inputs.  Figure 36 of the datasheet only shows a single-ended application, and I can't see any information in the device specifications about valid input voltages and/or common mode voltage ranges (ideally, as a function of supply voltage).

Have I overlooked it? (quite likely :) .. or could someone please enlighten me?

Thank you!

  • 0
    TI__Expert 6995 points

    James,

    Page 7 of the data sheet shows the input full scale voltage, this also applies to DC coupled input:

    • Single-ended input full- scale AC signal voltage AC coupled input 1Vrms

    Figure 36 on page 28 shows the supported DC coupled configuration in single-ended mode. Note the last sentence of Section 8.3.3 that indicates that input impedance option of 2.5k ohms is no supported for DC-coupled inputs.

    Best regards,
    Pedro