TDA9910HW/6 PHILIPS [NXP Semiconductors], TDA9910HW/6 Datasheet - Page 14

• Manufacturer Part Number: TDA9910HW/6
• Description: 12-bit, up to 80 Msample/s, Analog-to-Digital Converter (ADC) direct/ultra high IF sampling
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
9397 750 14418
Objective data sheet
10.2.4
10.2.5
10.2.6 IMD2 (IMD3)
where:
The value of k is usually 6 (i.e. calculation of THD is done on the first 5 harmonics).
SNR (signal-to-noise ratio)
The ratio of the output signal power to the noise power, excluding the harmonics and the
DC component is:
SFDR (spurious free dynamic range)
The number SFDR specifies available signal range as the spectral distance between the
amplitude of the fundamental and the amplitude of the largest spurious harmonic and
non-harmonic, excluding DC component:
THD dB
P
P
SNR dB
SFDR dB
Fig 8. Spectral of dual tone input sine wave with frequency.
harmonics
signal
magnitude
=
a
=
=
=
2
1
=
10log
10log
a
20log
2
2
+
a
10
10
2
3
10
+
P
--------------- -
P
Rev. 02 — 9 December 2004
P
------------------------ -
signal
------------------
max S
noise
harmonics
12-bit, up to 80 Msample/s, Analog-to-Digital Converter (ADC)
P
signal
+
a
1
a
2
k
IMD3
measured output range (MHz)
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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