AD7490BRU datasheet(11/28 Pages) AD

No. de pieza	AD7490BRU

Descripción Electrónicos	16-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP

Download	28 Pages

Scroll/Zoom	100%

Fabricante Electrónico	AD [Analog Devices]

Página de inicio	http://www.analog.com

Logo

11 / 28 page

Data Sheet

AD7490

Rev. D | Page 11 of 28

Peak Harmonic or Spurious Noise

Peak harmonic or spurious noise is defined as the ratio of the

rms value of the next largest component in the ADC output

spectrum (up to fS/2 and excluding dc) to the rms value of the

fundamental. Normally, the value of this specification is

determined by the largest harmonic in the spectrum, but for

ADCs where the harmonics are buried in the noise floor, it is a

noise peak.

Intermodulation Distortion

With inputs consisting of sine waves at two frequencies, fa

and fb, any active device with nonlinearities creates distortion

products at the sum and difference frequencies of mfa ± nfb,

where m, n = 0, 1, 2, 3, and so on. Intermodulation distortion

terms are those for which neither m nor n are equal to zero.

For example, the second order terms include (fa + fb) and

(fa − fb), while the third order terms include (2fa + fb), (2fa − fb),

(fa + 2fb) and (fa − 2fb).

The AD7490 is tested using the CCIF standard where two input

frequencies near the top end of the input bandwidth are used.

In this case, the second order terms are usually distanced in

frequency from the original sine waves, and the third order

terms are usually at a frequency close to the input frequencies.

As a result, the second and third order terms are specified

separately. The calculation of the intermodulation distortion is

per the THD specification, where it is the ratio of the rms sum

of the individual distortion products to the rms amplitude of

the sum of the fundamentals expressed in decibels.

Número de pieza similar - AD7490BRU

Fabricante Electrónico	No. de pieza	Datasheet	Descripción Electrónicos
Analog Devices	AD7490BRU	2Mb / 24P	16-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP REV. A
	AD7490BRU	748Kb / 29P	16-Channel, 1 MSPS, 12-Bit ADC
	AD7490BRU-REEL7	748Kb / 29P	16-Channel, 1 MSPS, 12-Bit ADC
	AD7490BRUZ	748Kb / 29P	16-Channel, 1 MSPS, 12-Bit ADC
	AD7490BRUZ-REEL	748Kb / 29P	16-Channel, 1 MSPS, 12-Bit ADC

Fabricante Electrónico	No. de pieza	Datasheet	Descripción Electrónicos
Analog Devices	AD7490	950Kb / 29P	16-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP REV. D
Analog Devices	AD7490	2Mb / 24P	16-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP REV. A
ams AG	AS1542	78Kb / 2P	16-Channel, 1 Msps, 12-Bit ADC with Sequencer
Analog Devices	AD7914	525Kb / 32P	4-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 16-Lead TSSOP REV. C
	AD7924	525Kb / 32P	4-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 16-Lead TSSOP REV. C
	AD7924BRUZ	525Kb / 32P	4-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 16-Lead TSSOP REV. C
	AD7904	525Kb / 32P	4-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 16-Lead TSSOP REV. C
	AD7904	411Kb / 24P	4-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 16-Lead TSSOP REV. 0
	AD7923	381Kb / 24P	4-Channel, 200 kSPS 12-Bit ADC with Sequencer in 16-Lead TSSOP REV. D
	AD7923	380Kb / 24P	4-Channel, 200 kSPS 12-Bit ADC with Sequencer in 16-Lead TSSOP REV. C