Philips PM 5167 - Principle of the Current Mirror

39
·----9- ---·-----------·-------~ 1 8
1'- - -'-'- -- - -'--
,-.,
amplltu de
current cont re i
I
I
source
r-- 3 10 10 31 3 t--
r JR 335 to 3 38
I
I
I
el'
~ ,mpedance
• ) 305
308
,I L 31 5
319 l.. •
c onve rtet 2
1309
I -::: ... I- +--------<l~+-----t ----i .K."_J 31 7 I
-- K P071 (320 1;::t--
I
IOV
pp
301,302
I I
I
I
I
iV impedance 19 /V
1-- --*--4------+---- --I converter 1 1-----0
uc
3231032 5 1 0V
pp
switching
352
I
array no.l
I
impedance
J'
r----Kl
3301
1333)
.1 I 13451 1347,1 ":>1 __ I
ZV
pp
, • 1 331 334 .• • 346 348 ( -
325,327
~
converter
3
I I 649 '---------+---- '---------+----
I I
I
~ I'
current C I
5QUrCe
I~
L __ ._._._._._._._.~ 5 ._._._.~
M A S9B8
Fig. I. Block diagram of the oscillator U3
Alfl
r
o
d"B
- 2
r"\.
+
+
--
- -
- - -
--
--
-\
- 4
1\
- 5
I
620
I
\
\
- 8
- 10
1
-
12
10
20
40 55 100
l
f/MHz
30
t,
t
308
ns
;"'"
20
I OUT n
c
10
-
---
~
301
10
20
---
U
OLIT
1./v
pp
across 50 (l
MAgz52
MA S 9- 90
Fi g. 8. Pri nci ple of the current mir r or
Fi g. 9. Graph of amp litude res ponse a nd r ise tim e