參數(shù)資料
型號(hào): MAX109EHF-D
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: ADC
英文描述: 8-Bit, 2.2Gsps ADC with Track/Hold Amplifier and 1:4 Demultiplexed LVDS Outputs
中文描述: 1-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, BGA256
封裝: 27 X 27 MM, 1.27 MM PITCH, SBGA-256
文件頁數(shù): 27/29頁
文件大小: 451K
代理商: MAX109EHF-D
distortion includes all spectral components to the
Nyquist frequency excluding the fundamental and the
DC offset.
Effective Number of Bits (ENOB)
ENOB indicates the global accuracy of an ADC at a
specific input frequency and sampling rate. An ideal
ADC’s error consists of quantization noise only. ENOB
is calculated from a curve fit referenced to the theoreti-
cal full-scale range.
Total Harmonic Distortion (THD)
THD is the ratio of the RMS sum of the first 15 harmon-
ics of the input signal to the fundamental itself. This is
expressed as:
where V1 is the fundamental amplitude, and V
2
through
V
16
are the amplitudes of the 2nd- through 16th-order
harmonics (HD2 through HD16).
Spurious-Free Dynamic Range (SFDR)
SFDR is the ratio expressed in decibels of the RMS
amplitude of the fundamental (maximum signal compo-
nent) to the RMS value of the next largest spurious
component, excluding DC offset.
Third-Order Intermodulation (IM3)
IM3 is the total power of the third-order intermodulation
product to the Nyquist frequency relative to the total
input power of the two input tones, f
IN
1 and f
IN
2. The
individual input tone levels are at -7dBFS. The third-order
intermodulation products are located at 2 x f
IN1
-f
IN2
, 2 x
f
IN2
-f
IN1
, 2 x f
IN1
+f
IN2
, and 2 x f
IN2
+f
IN1
.
Full-Power Bandwidth
A large -1dBFS analog input signal is applied to an
ADC and the input frequency is swept up to the point
where the amplitude of the digitized conversion result
has decreased by -3dB. This point is defined as full-
power input bandwidth frequency.
THD 20 log
V
V
V
22
32
1
+
+
... V
162
M
8-Bit, 2.2Gsps ADC with Track/Hold Amplifier
and 1:4 Demultiplexed LVDS Outputs
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