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ADA4625-1ARDZ-R7 датащи(PDF) 27 Page - Analog Devices

номер детали ADA4625-1ARDZ-R7
подробное описание детали  Low Noise, Fast Settling Single Supply, RRO, JFET Op Amp
PDF  30 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

ADA4625-1ARDZ-R7 датащи(HTML) 27 Page - Analog Devices

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Data Sheet
ADA4625-1
Rev. 0 | Page 27 of 30
Table 7 shows the noise sources and estimated total output noise
for the photodiode amplifier with CF = 2.2 pF and CF =3.9 pF,
respectively.
Use the Analog Devices Analog Photodiode Wizard to design a
transimpedance amplifier circuit to interface with a photodiode.
Table 7. RMS Noise Contributions of the Photodiode Preamplifier
Noise Contributor
Expression
RMS Noise (μV)1
CF = 2.2 pF
CF = 3.9 pF
RF
 
P
F
f
kTR
2
4
where:
k is Boltzmann’s constant (1.38 × 10−23 J/K).
T is the temperature in Kelvin (K).
43.2
32.5
Current Noise, Vni, AMP
p
F
N
f
R
i
2
0.34
0.25
Voltage Noise, Vnv, AMP
GBP
F
IN
N
f
C
C
e
2
1


61.6
47.7
Total Noise
2
2
2
,
,
F
R
AMP
nv
AMP
nv
V
V
V
75.2
57.7
1 RMS noise with RF = 49.9 kΩ, CIN = CCM + CDM = 19.9 pF, CD = 5 pF, iN = 4.5 fA/√Hz, and eN =3.3 nV/√Hz.



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