ADC32RF44 datasheet(20/128 Pages) TI2

20 / 128 page

Input Frequency (MHz)

100

200

300

500 700 1000

2000 3000

5000

-8

-7

-6

-5

-4

-3

-2

-1

D062

100 Ohm Source

50 Ohm Source

Input Frequency (MHz)

500

1000

1500

2000

2500

3000

-3

-2

-1

D063

Input Frequency (MHz)

500

1000

1500

2000

2500

3000

0.01

0.02

0.03

0.04

0.05

0.06

0.07

D001

D064

ADC32RF42

SBAS844 – MAY 2017

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Product Folder Links: ADC32RF42

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Feature Description (continued)

The input impedance of analog inputs can also be modelled as parallel combination of equivalent resistance and

capacitance. Figure 35 and Figure 36 show how equivalent impedance (CIN and RIN) vary over frequency.

Figure 35. Differential Input Capacitance vs

Input Frequency

Figure 36. Differential Input Resistance vs Input Frquency

Each input pin (INP, INM) must swing symmetrically between (CM + 0.3375 V) and (CM – 0.3375 V), resulting in

a 1.35-VPP (default) differential input swing. As shown in Figure 37, the input sampling circuit has a 3-dB

bandwidth that extends up to approximately 3.2 GHz.

Figure 37. Input Bandwidth with a 100-Ω Source Resistance

ADC32RF44 Datasheet(PDF) 20 Page - Texas Instruments

ADC32RF44 Datasheet(HTML) 20 Page - Texas Instruments

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