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ADC12D1800RF

SNAS518I –JULY 2011–REVISED JANUARY 2014

www.ti.com

Converter Electrical Characteristics

Dynamic Converter Characteristics

(1)

(continued)

ADC12D1800RF

Units

Symbol Parameter Conditions

(Limits)

Typ Lim

Non-DES Mode

(1)(2)(3)

ENOB Effective Number of Bits A

= 125 MHz @ -0.5 dBFS 9.3 bits

= 248 MHz @ -0.5 dBFS 9.3 bits

= 498 MHz @ -0.5 dBFS 9.3 8.4 bits (min)

= 1147 MHz @ -0.5 dBFS 8.7 bits

= 1448 MHz @ -0.5 dBFS 8.7 bits

SINAD Signal-to-Noise Plus Distortion A

= 125 MHz @ -0.5 dBFS 57.7 dB

Ratio

= 248 MHz @ -0.5 dBFS 57.7 dB

= 498 MHz @ -0.5 dBFS 57.7 52.1 dB (min)

= 1147 MHz @ -0.5 dBFS 54.1 dB

= 1448 MHz @ -0.5 dBFS 54 dB

SNR Signal-to-Noise Ratio A

= 125 MHz @ -0.5 dBFS 58.6 dB

= 248 MHz @ -0.5 dBFS 58.2 dB

= 498 MHz @ -0.5 dBFS 58.1 52.9 dB (min)

= 1147 MHz @ -0.5 dBFS 54.9 dB

= 1448 MHz @ -0.5 dBFS 54.3 dB

THD Total Harmonic Distortion A

= 125 MHz @ -0.5 dBFS -64.9 dB

= 248 MHz @ -0.5 dBFS -65.7 dB

= 498 MHz @ -0.5 dBFS -67 -60 dB (max)

= 1147 MHz @ -0.5 dBFS -61.5 dB

= 1448 MHz @ -0.5 dBFS -64.9 dB

2nd Harm Second Harmonic Distortion A

= 125 MHz @ -0.5 dBFS -68.8 dBc

= 248 MHz @ -0.5 dBFS -85.6 dBc

= 498 MHz @ -0.5 dBFS -72.5 dBc

= 1147 MHz @ -0.5 dBFS -81.2 dBc

= 1448 MHz @ -0.5 dBFS -70.4 dBc

3rd Harm Third Harmonic Distortion A

= 125 MHz @ -0.5 dBFS -70.4 dBc

= 248 MHz @ -0.5 dBFS -67.5 dBc

= 498 MHz @ -0.5 dBFS -69.8 dBc

= 1147 MHz @ -0.5 dBFS -70.4 dBc

= 1448 MHz @ -0.5 dBFS -73 dBc

SFDR Spurious-Free Dynamic Range A

= 125 MHz @ -0.5 dBFS 68.1 dBc

= 248 MHz @ -0.5 dBFS 67 dBc

= 498 MHz @ -0.5 dBFS 71.7 54 dBc (min)

= 1147 MHz @ -0.5 dBFS 60 dBc

= 1448 MHz @ -0.5 dBFS 61 dBc

(1) The Dynamic Specifications are ensured for room to hot ambient temperature only (25°C to 85 ° C). Refer to the plots of the dynamic

performance vs. temperature in Typical Performance Plots to see typical performance from cold to room temperature (-40°C to 25° C).

(2) The Fs/2 spur was removed from all the dynamic performance specifications.

(3) Typical dynamic performance is only tested at Fin = 498 MHz; other input frequencies are specified by design and / or characterization

and are not tested in production.

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