HEF4521B(2009) 查看數據表（PDF） - NXP Semiconductors.
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HEF4521B Datasheet PDF : 17 Pages
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NXP Semiconductors
HEF4521B
24-stage frequency divider and oscillator
Rbias
560 kΩ
VDD
0.47 µF
Vi
(f = 1 kHz)
A2
input
Y2 100 µF
output
A io
VSS
001aae820
gfs = dio/dvi with vo constant (see Figure 11).
Fig 10. Test setup for measuring forward
transconductance
75
gain
(VO/VI)
50
001aae716
typ
25
12.5
gfs
(mA/V)
10
7.5
5
001aae658
(1)
(2)
(3)
2.5
0
0
5
10
15
VDD (V)
(1) Average + 2 s.
(2) Average.
(3) Average − 2 s, where ‘s’ is the observed standard
deviation.
Fig 11. Typical forward transconductance gfs as a
function of the supply voltage at Tamb = 25 °C
20
IDD
(mA)
15
10
001aae717
typ
5
0
0
5
10
15
VDD (V)
Fig 12. Voltage gain VO/VI as a function of supply
voltage
0
0
5
10
15
VDD (V)
Fig 13. Supply current as a function of supply voltage
330 kΩ
A2
Y2
001aae718
Fig 14. Test setup for measuring the Figure 12 and Figure 13 graphs
HEF4521B_5
Product data sheet
Rev. 05 — 5 November 2009
© NXP B.V. 2009. All rights reserved.
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