lt1739 Linear Technology Corporation, lt1739 Datasheet - Page 6
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lt1739
Manufacturer Part Number
lt1739
Description
Dual 500ma, 200mhz Xdsl Line Driver Amplifier
Manufacturer
Linear Technology Corporation
Datasheet
1.LT1739.pdf
(20 pages)
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LT1739
TYPICAL PERFOR A CE CHARACTERISTICS
6
TEST CIRCUIT
E
IN
49.9
MINICIRCUITS
–40
–45
–50
–55
–60
–65
–70
–75
–80
–85
SPLITTER
ZSC5-2-2
2
Differential Harmonic Distortion
vs Supply Current
3
I
SUPPLY
4
W
OUT (+)
OUT (–)
f = 100kHz, HD2
5
PER AMPLIFIER (mA)
f = 100kHz, HD3
f = 1MHz, HD3
f = 1MHz, HD2
U
6
10k
10k
7
8
V
V
A
R
+IN A
–IN A
–IN B
+IN B
O
S
V
L
9
= 12V
= 10
= 50
= 10V
110
110
1739 G18
–12V
10
V
–12V
12V
+
+
–
–
+
P-P
11
A
B
V
–
0.01 F
SHDN
R
SHDNREF
1k
1k
BIAS
OUT A
OUT B
R
L
V
OUT(P-P)
50
15
20
10
*COILCRAFT X8390-A OR EQUIVALENT
V
DISTORTION MEASURED ACROSS LINE LOAD
5
0
100k
OUTP-P
1739 TC
Undistorted Output Swing
vs Frequency
12.7
12.7
SFDR > 40dB
T
V
A
R
I
S
A
S
V
L
PER AMPLIFIER = 10mA
1:2*
= 25 C
= 12V
= 10
= 50
AMPLITUDE SET AT EACH AMPLIFIER OUTPUT
300k
FREQUENCY (Hz)
0.1 F
0.1 F
1M
100 LINE LOAD
SUPPLY BYPASSING
+
+
4.7 F
4.7 F
3M
+
1739 G19
10M
4.7 F
0.1 F
1739fas, sn1739
12V
–12V