DN308 - Linear Technology

==
100MHz !"#2.5mA
! – ! 308
!"#$%&'()
Glen Brisebois
LT ® 6202 100MHz !"#1.9nV/
√Hz !"#$%$&'(&)*+,-.
2 . 5 m A !"0 . 7 5 p A / √ H z !
!"#$%&'()*+,-./01
!"#$%&'(= 3 V5V= ± 5V !"
!"#$%&'(%)*+, -./%
S O T S O !"#$%&'(&)*+,
!"LT6203LT6204
!"#$J F E T !I D S S !"#$
!"#$%&'()*+,-+./
!"#$%&'()*+,-.= ( – 0 . 5 V ) !"#$%&' !()*
L T 6 2 0 2 !"#$%&'()*+,-.
! " # $ % & ' ( ) * + , =R 1 R 2 L T 6 2 0 2 !" #$%#&'()*+, !"#$%&'()*+,-.
!"#$%&'()*+,2.4nV/√Hz
!"AC !"#
!"#$%&'()*+,-./0123
2.4nV/√Hz100MHz !!"#3.8mA
!"#$%&'()*+,-./0123
!"#$%&'()*+,-=5=6 !
!"J F E T !"#g m ( 1 / 8 0 Ω ) 4 . 9 9 k Ω !"#$%&'()*2 % L T 6 2 0 2 1 0 0 M H z !"#$%&'()*
!"#$%&'$(= ( !"#$ %) 3 . 5 p F !"#J F E T C G S J F E T
!"#$%&'()*+,-.!/01
J F E T !"#$%&'()*+,-./01
!"#$%&'()*+,--./ 0
!!"#$= 1 !"#$%&'()*+
!"#$%&'()L T 6 2 0 2 !"#
J F E T J F E T !"#$%&'()*
L T 6 2 0 2 !"#$%&'()*+,-.
R1R2 !LT6202JFET !"
0V !R3 JFETI DRAIN 1mA
VS+
R1
499k
R2
499k
–
C1
1pF
PHILIPS
BF862
VBIAS–
R3
4.99k
+
VS–
LT6202
VS = ±5V
VOUT
DN308 F01
=1= !"#$%&'()*+,-./0
!"#$%&'"%&()*+,-.
!"#$%&'()0ΩGΩ
!"#$
05/03/308
!"#$%&'=R 3 !"#$%&'(
!"#$%&'()*+,-.(/0
!" #$%&'()*+,-./012
2 . 5 p F !"#$%&'()*+,-./
=4% !"#$%&'()*+,-1.6MHz
!"#
= 2 !"#$1 !"L T 6 2 0 2 !"#$%&'" ()J F E T = D C !"#$%&'()*=LT6202 !"#
!"#$%L T C 2 0 5 0 ( !"#$)
!"#$%J F E T !"#$%& '(
L T C 2 0 5 0 !""#$%&1 m A 1
!"#$%&'A C !"#$%&'(
!"#$%&'()D C !"#$%&
=====LTCLT
!"#$%&'(
VS+
R2
499k
PHILIPS
BF862
C2
0.1µF
R4
10M
R1
499k
C1
1pF
–
VBIAS–
–
R5
10k
LT6202
VOUT
+
LTC2050HV
+
DN308 F02
R3
4.99k
C3
1µF
VS–
VS = ±5V
=2 !"#$%&'()"*+,AC !"#LTC2050 DC
200µV20MHz
2mVP-P
5V
VIN
0.6VDC
±200mVAC
1/2 LT6203
–
R1
1.02k
16ADC
3 !"L T 6 2 0 3 !"L T C 1 8 6 4 16250ksps A/D !"#$LT6203
!"= 1 = 0 V !"#= V L O W LTC1864 !"#LTC6203 !"#$%
10 !"#V LOW !"#$LTC1864
!LTC1864 !"#0V5V !"#$%&'V I N !"#= V L O W ( 0.4V0.82V ) 4 !"#$%&'
!"#$%&'(10.1318kHz ( ) = F F T !"#$%&'()*+
!"#
VLOW
0.4VDC
!"
(021)6375-9478
(021)6375-9479
!"
(010)6801-1080
(010)6805-4030
!"#$%
Cytech Technology Ltd.
www. cytecht.com
!"(852)2375-8866
!"(010)8268-4280
!"(021)6440-1373
!"(0755)8386-7431
!"(025)481-0877
!"(028)8652-7116
!"(029)837-8918
!"(027)8736-0546
R2
113Ω
+
–
LTC1864
16-BIT
250ksps
R4
100Ω
SERIAL
DATA
OUT
DN308 F03
1/2 LT6203
–
=3 !16ADC
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
–150
fIN = 10.13183kHz
NO WINDOWING
NO AVERAGING
8192 POINT FFT
12.5kHz/DIV
125kHz
DN308 F04
=4 !"#$%(SFDR)100dB10kHz
FFT
LT6202LT6203LT6204 !"#$%&'(
!"#$%&'()*+,+-./-0
!"#$%&'()*+,-./01 2
!
!"#$%&'()*+,-./(01
!"#$%&'()*+,-./01
www.linear.com.cn [email protected]
http://www.linear.com.cn/go/dnLT6202
!"#
Linear Technology Corporation Ltd.
www.linear.com.cn
!"
(852)2428-0303
(852)2348-0885
+
C1
470pF
100dB
LTC1864 !"##$%LT6203
!"#$%&'()*+,-./(01A/D
!"#$%&'= ( !"#$%&'()
) !"#$%&'()*+,-./0
!"#$%&'()*+,-A / D !"#$%&'()*+, -./0$
!"#$%&'()*+,-./0$ !"#$%&'()*+LTC1864 !
2 0 M H z !"#$%&'()*+,-./
!"#$%&'()*( Nyquist ) !"
!"#$%&
5V
R3
100Ω
+
SFDR (dB)
!"#$%&'()
(852)2375-7700
(010)8268-4277
(021)6440-0166
(0755)8386-7954
(025)480-8023
(028)8652-7556
(029)837-8919
(027)8736-0547
!"#$ ! !"#$%
Unique-A Division of Memec (Asia Pacific) Ltd.
www.unique-ap.com
[email protected]
!"(852)2410-2778
!"(010)8519-1866
!"(021)6317-8226
!"(0755)8366-4329
!"(028)8652-8252
!"(027)8732-2646
!"(029)822-9180
!"(0592)516-4701
!"(0532)582-1322
(852)2370-3247
(010)8519-1865
(021)6317-3446
(0755)8366-4330
(028)8652-8253
(027)8732-2729
(029)825-8595
(0592)516-4702
(0532)583-8372
dn308f 0303 34K • PRINTED IN CHINA
 LINEAR TECHNOLOGY CORPORATION 2003