R1111N
TECHNICAL NOTES
:KHQꢀXVLQJꢀWKHVHꢀ,&VꢃꢀFRQVLGHUꢀWKHꢀIROORZLQJꢀSRLQWVꢎ
,QꢀWKHVHꢀ,&VꢃꢀSKDVHꢀFRPSHQVDWLRQꢀLVꢀPDGHꢀIRUꢀVHFXULQJꢀVWDEOHꢀRSHUDWLRQꢀHYHQꢀLIꢀWKHꢀORDGꢀFXUUHQWꢀLVꢀYDULHGꢄꢀ)RU
WKLVꢀSXUSRVHꢃꢀEHꢀVXUHꢀWRꢀXVHꢀDꢀFDSDFLWRUꢀ&287ꢀZLWKꢀJRRGꢀIUHTXHQF\ꢀFKDUDFWHULVWLFVꢀDQGꢀ(65ꢀ+(TXLYDOHQWꢀ6HULHVꢀ5Hꢂ
VLVWDQFHꢈꢀRIꢀZKLFKꢀLVꢀLQꢀWKHꢀUDQJHꢀGHVFULEHGꢀDVꢀIROORZVꢎ
3
1
5
V
OUT
CE
Ceramic
Capacitor
R1111N301B
Spectrum
Analyzer
S.A.
ESR
VIN
GND
2
V
IN
I
OUT
Ceramic Capacitor 1µF
Measuring Circuit for white noise;R1111N301B
7KHꢀUHODWLRQVKLSꢀEHWZHHQꢀ,287ꢀ+RXWSXWꢀFXUUHQWꢈꢀDQGꢀ(65ꢀRIꢀRXWSXWꢀFDSDFLWRUꢀLVꢀVKRZQꢀLQꢀWKHꢀJUDSKVꢀEHORZꢄꢀ7KH
FRQGLWLRQVꢀZKHQꢀWKHꢀZKLWHꢀQRLVHꢀOHYHOꢀLVꢀXQGHUꢀꢒꢉµ9ꢀ+$YJꢄꢈꢀDUHꢀLQGLFDWHGꢀE\ꢀWKHꢀKDWFKHGꢀDUHDꢀLQꢀWKHꢀJUDSKꢄ
+QRWHꢎꢀ:KHQꢀWKHꢀDGGLWLRQDOꢀFHUDPLFꢀFDSDFLWRUVꢀDUHꢀFRQQHFWHGꢀWRꢀWKHꢀRXWSXWꢀSLQꢀZLWKꢀRXWSXWꢀFDSDFLWRUꢀIRUꢀSKDVHꢀFRPꢂ
SHQVDWLRQꢃꢀWKHꢀRSHUDWLRQꢀPLJKWꢀEHꢀXQVWDEOHꢄꢀ%HFDXVHꢀRIꢀWKLVꢃꢀWHVWꢀWKHVHꢀ,&VꢀZLWKꢀDVꢀWKHꢀVDPHꢀH[WHUQDOꢀFRPSRQHQWVꢀDV
WKHꢀRQHVꢀWRꢀEHꢀXVHGꢀRQꢀWKHꢀ3&%ꢄꢈ
ꢕPHDVXULQJꢀFRQGLWLRQV!
+ꢁꢈ 9,1 ꢒ9
+ꢅꢈ )UHTXHQF\ꢀEDQGꢎꢀꢁꢉꢊ]ꢀWRꢀꢁ0ꢊ]
+ꢆꢈ 7HPSHUDWXUHꢎꢀꢅꢇ°&
R1111N301B
R1111N301B
Ceramic 2.2µF
Ceramic 1.0µF
100.0
100.0
10.0
10.0
1.0
1.0
0.1
0.1
0
50
100
150
0
50
100
150
Output Current IOUT (mA)
Output Current IOUT (mA)
16
RICOH [ RICOH ELECTRONICS DEVICES DIVISION ]
