參數(shù)資料
型號(hào): TDA8768AH4
廠商: NXP Semiconductors N.V.
英文描述: 12-bit, 70 Msps Analog-to-Digital Converter (ADC)
中文描述: 12位,70 Msps的模擬到數(shù)字轉(zhuǎn)換器(ADC)
文件頁(yè)數(shù): 26/32頁(yè)
文件大?。?/td> 915K
代理商: TDA8768AH4
Philips Semiconductors
TDA8768A
12-bit, 70 Msps Analog-to-Digital Converter (ADC)
Product data
Rev. 02 — 03 July 2002
26 of 32
9397 750 09656
Koninklijke Philips Electronics N.V. 2002. All rights reserved.
The total intermodulation distortion IMD is given by
P
P
signal
where,
and
is the power in the intermodulation component at frequency f
t
.
12.1.4
Noise Power Ratio (NPR)
When using a notch-filtered broadband white-noise generator as the input to the ADC
under test, the Noise Power Ratio is defined 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
-----------------------
log
=
P
intermod
a
im
a
im
2 f
t2
2
f
t1
)
+
f
t2
2
(
)
a
im
2
f
t1
)
f
t2
a
im
+
(
)
(
a
im
2
f
t1
f
t2
2 f
t2
(
)
2
f
t1
+
(
a
im
2 f
t1
f
t2
(
2
2 f
t1
+
)
+
+
+
=
P
signal
a
2
f
t1
(
)
a
2
f
t2
(
)
+
=
a
im
2
f
t
(
)
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