參數(shù)資料
型號(hào): TDA8768BH/8/C3/S1
廠(chǎng)商: NXP SEMICONDUCTORS
元件分類(lèi): ADC
英文描述: 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP44
封裝: 10 X 10 MM, 1.75 MM HEIGHT, 1.30 MM LEAD LENGTH, PLASTIC, SOT-307-2, QFP-44
文件頁(yè)數(shù): 16/30頁(yè)
文件大?。?/td> 547K
代理商: TDA8768BH/8/C3/S1
Philips Semiconductors
TDA8768B
12-bit, 80 Msps Analog-to-Digital Converter (ADC)
Product data
Rev. 02 — 20 January 2004
23 of 30
9397 750 12338
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
The total intermodulation distortion (IMD) is given by
where,
and
is the power in the intermodulation component at frequency ft
12.1.4
Noise Power Ratio (NPR)
When using a notch-ltered broadband white-noise generator as the input to the ADC
under test, the Noise Power Ratio is dened as the ratio of the average out-of-notch
to the in-notch power spectral density magnitudes for the FFT spectrum of the ADC
output sample set.
IMD dB
[]
10
P
intermod
P
signal
-----------------------
log
=
P
intermod
a
im
2
f
t1
f
t2
() a
im
2
f
t1
f
t2
+
() a
im
2
f
t1
2f
t2
()
a
im
2
f
t1
2f
t2
+
() a
im
2
2f
t1
f
t2
() a
im
2
2f
t1
f
t2
+
()
+
=
P
signal
a2 f
t1
() a2 f
t2
()
+
=
a
im
2
f
t
()
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