20
LT1969
PART NUMBER DESCRIPTION COMMENTS
LT1207 Dual 250mA, 60MHz Current Feedback Amplifier Shutdown/Current Set Function
LT1396 Dual 400MHz, 800V/µs Current Feedback Amplifier 4.6mA Supply Current Set, 80mA I
OUT
LT1497 Dual 125mA, 50MHz Current Feedback Amplifier 900V/µs Slew Rate
LT1795 Dual 500mA, 50MHz Current Feedback Amplifier Shutdown/Current Set Function, ADSL CO Driver
LT1886 Dual 700MHz, 200mA Op Amp Gain of 10 Stable, Low Distortion
LINEAR TECHNOLOGY CORPORATION 2001
1969f LT/TP 0301 4K • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear-tech.com
RELATED PARTS
Split Supply ±5V ADSL CPE Line Driver
TYPICAL APPLICATIO
U
–
+
6.19Ω
2
1
5V
5
7
–5V
–5V
1k
866Ω
2k
0.47µF**
BAV99**
–5V
5V
5V
–5V
2k
866Ω
–
+
V
IN
–
+
V
L
*COILCRAFT X8390-A OR EQUIVALENT
**SEE TEXT REGARDING FAULT PROTECTION
–
+
6
13k
49.9k
–5V
6.19Ω
1/2 LT1969
1/2 LT1969
1969 TA02
1k
100pF
1:2*
100Ω
130Ω
4
3
10
9
8
0.47µF**
100pF
130Ω
= 5 (ASSUME 0.5dB TRANSFORMER POWER LOSS)
REFLECTED LINE IMPEDANCE = 100Ω / 2
2
= 25Ω
EFFECTIVE TERMINATION = 2 • 6.19 •
EACH AMPLIFIER: 0.56V
RMS
, 29.9mA
RMS
±3V PEAK, ±160mA PEAK
= 24.8Ω
V
L
V
IN
2kΩ
1kΩ
BAV99**