參數(shù)資料
型號: AD10226AB
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: Dual-Channel, 12-Bit 125 MSPS IF Sampling A/D Converter
中文描述: DUAL 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PBGA385
封裝: 35 X 35 MM, BGA-385
文件頁數(shù): 10/20頁
文件大小: 976K
代理商: AD10226AB
REV. 0
AD10226
–10–
10MHz
50MHz
100MHz = 50.69 – j2.84
150MHz = 44.61 – j0.970
200MHz = 43.70 + j3.70
250MHz = 46.41 + j9.48
300MHz = 53.09 + j14.76
= 52.22 – j0.421
TPC 13. Input Impedance S11
FREQUENCY – MHz
0.1
1
G
10
1
2
3
4
5
6
7
8
9
10
0
100
1000
1MHz
10MHz = 1.010
50MHz = 1.045
100MHz = 1.066
140MHz = 1.090
160MHz = 1.126
200MHz = 1.170
TPC 14. Voltage Standing Wave Ratio (VSWR)
Equivalent Circuits
V
CC
24k
8k
ENCODE
ENCODE
8k
24k
Test Circuit 1. Equivalent ENCODE Input
V
CC
100
DIGITAL
OUTPUT
Test Circuit 2. Equivalent Digital Output
Q1
NPN
V
REF
OUTPUT
V
CC
V
CC
Test Circuit 3. Equivalent Voltage Reference Output
V
CC
A
IN
2
15k
50
3.75k
A
IN
1
15k
3.75k
Test Circuit 4. Equivalent Analog Input
DEFINITION OF TERMS
Analog Bandwidth
The analog input frequency at which the spectral power of the
fundamental frequency (as determined by the FFT analysis) is
reduced by 3 dB.
Aperture Delay
The delay between the 50% point on the rising edge of the ENCODE
command and the instant at which the analog input is sampled.
Aperture Uncertainty (Jitter)
The sample-to-sample variation in aperture delay.
Differential Nonlinearity
The deviation of any code from an ideal 1 LSB step.
ENCODE Pulsewidth/Duty Cycle
Pulsewidth high is the minimum amount of time that the
ENCODE pulse should be left in logic “1” state to achieve rated
performance; pulsewidth low is the minimum time ENCODE
pulse should be left in low state. At a given clock rate, these specs
define an acceptable ENCODE duty cycle.
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