1N4099…1N4135
Noise density, (N
D
) is specified in microvolts-rms per square-root-hertz.
Actual measurement is performed using a 1KHz to 8KHz frequency
bandpass filter at a constant Zener test current(I
ZT
) at 25 C ambient
temperature. N
D
is calculated from the formula.
500
(-)
POWER
(+)
SUPPLY
(LOW NOISE
SOURCE)
R
LOAD
Power Dissipation: Ptot (mW)
BATTERY
SHIELDED
TEST
CIRCUIT
400
300
DC
BLOCKING
CAPACITOR
200
A
AMPLIFIER
100
FILTER
fo=2KHz
sp=1.3KHz
TRUE
RMS
VOLT
METER
Vnoise
0
0
25
150
Ambient Temperature: Ta ( C)
O
100
200
Power Derating Curve
Capacitance vs.
V
Z
Curve
200
Typical capacitance in picofarads
20
100
at zero volt
at -8 volts(V
R
)
20
10
0
40
80
120
160
200
Zener voltage
SEMTECH ELECTRONICS LTD.
®
(Subsidiary
of Sino-Tech International Holdings Limited, a company
listed on the Hong Kong Stock Exchange, Stock Code: 724)
Dated : 20/06/2007
SEMTECH_ELEC [ SEMTECH ELECTRONICS LTD. ]
