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PDF LT1795 Data sheet ( Hoja de datos )
| Número de pieza | LT1795 | |
| Descripción | Dual 500mA/50MHz Current Feedback Line Driver Amplifier | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LT1795 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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FEATURES
s 500mA Output Drive Current
s 50MHz Bandwidth, AV = 2, RL = 25Ω
s 900V/µs Slew Rate, AV = 2, RL = 25Ω
s Low Distortion: –75dBc at 1MHz
s High Input Impedance, 10MΩ
s Wide Supply Range, ±5V to ±15V
s Full Rate, Downstream ADSL Supported
s Power Enhanced Small Footprint Packages
TSSOP-20, S0-20 Wide
s Low Power Shutdown Mode
s Power Saving Adjustable Supply Current
Us Stable with CL = 10,000pF
APPLICATIO S
s ADSL HDSL2, G.lite Drivers
s Buffers
s Test Equipment Amplifiers
s Video Amplifiers
s Cable Drivers
LT1795
Dual 500mA/50MHz
Current Feedback Line Driver
Amplifier
DESCRIPTIO
The LT®1795 is a dual current feedback amplifier with high
output current and excellent large signal characteristics.
The combination of high slew rate, 500mA output drive
and up to ±15V operation enables the device to deliver
significant power at frequencies in the 1MHz to 2MHz
range. Short-circuit protection and thermal shutdown
insure the device’s ruggedness. The LT1795 is stable with
large capacitive loads and can easily supply the large
currents required by the capacitive loading. A shutdown
feature switches the device into a high impedance, low
current mode, reducing power dissipation when the de-
vice is not in use. For lower bandwidth applications, the
supply current can be reduced with a single external
resistor.
The LT1795 comes in the very small, thermally enhanced,
20-lead TSSOP package for maximum port density in line
driver applications.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATION
Low Loss, High Power Central Office ADSL Line Driver
V+
+IN +
1/2
LT1795
–
1k
165Ω
1k
12.5Ω
1:2*
100Ω
–
1/2
LT1795
–IN +
12.5Ω
V–
* MIDCOM 50215 OR EQUIVALENT
1795 TA01
1
1 page  
LT1795
TYPICAL PERFOR A CE CHARACTERISTICS
Second Harmonic Distortion vs
Frequency
–40
AV = 10 DIFFERENTIAL
–50
VOUT = 20VP-P
VS = ±15V
RLOAD = 50Ω
–60 IQ PER AMPLIFIER
IQ = 20mA
–70
–80
IQ = 15mA
–90
IQ = 10mA
IQ = 5mA
–100
10k
100k
FREQUENCY (Hz)
1M
LT1795 G07
Third Harmonic Distortion vs
Frequency
–40
AV = 2 DIFFERENTIAL
–50
VOUT = 20VP-P
VS = ±12V
RLOAD = 50Ω
–60 IQ PER AMPLIFIER
IQ = 5mA
–70
IQ = 20mA
–80
–90
IQ = 10mA
–100
10k
100k
FREQUENCY (Hz)
IQ = 15mA
1M
LT1795 G10
Second Harmonic Distortion vs
Frequency
–40
AV = 2 DIFFERENTIAL
–50
VOUT = 4VP-P
VS = ±12V
RLOAD = 50Ω
–60 IQ PER AMPLIFIER
–70
–80
–90 IQ = 20mA
IQ = 5mA
IQ = 10mA
IQ = 15mA
–100
10k
100k
FREQUENCY (Hz)
1M
LT1795 G13
Third Harmonic Distortion vs
Frequency
–40
AV = 10 DIFFERENTIAL
–50
VOUT = 20VP-P
VS = ±15V
RLOAD = 50Ω
–60 IQ PER AMPLIFIER
–70 IQ = 5mA
–80
–90
–100
10k
IQ = 10mA
IQ = 20mA
IQ = 15mA
100k
FREQUENCY (Hz)
1M
LT1795 G08
Second Harmonic Distortion vs
Frequency
–40
AV = 10 DIFFERENTIAL
–50
VOUT = 20VP-P
VS = ±12V
RLOAD = 50Ω
–60 IQ PER AMPLIFIER
–70
IQ = 20mA
–80 IQ = 10mA
–90 IQ = 15mA
IQ = 5mA
–100
10k
100k
FREQUENCY (Hz)
1M
LT1795 G11
Third Harmonic Distortion vs
Frequency
–40
AV = 2 DIFFERENTIAL
–50
VOUT = 4VP-P
VS = ±12V
RLOAD = 50Ω
–60 IQ PER AMPLIFIER
IQ = 5mA
IQ = 10mA
–70
–80
–90
–100
10k
IQ = 15mA
IQ = 20mA
100k
FREQUENCY (Hz)
1M
LT1795 G14
Second Harmonic Distortion vs
Frequency
–40
AV = 2 DIFFERENTIAL
–50
VOUT = 20VP-P
VS = ±12V
RLOAD = 50Ω
–60 IQ PER AMPLIFIER
–70
–80
–90
–100
10k
IQ = 10mA
IQ = 5mA
IQ = 15mA
IQ = 20mA
100k
FREQUENCY (Hz)
1M
LT1795 G09
Third Harmonic Distortion vs
Frequency
–40
AV = 10 DIFFERENTIAL
–50
VOUT = 20VP-P
VS = ±12V
RLOAD = 50Ω
–60 IQ PER AMPLIFIER
IQ = 5mA
–70
–80
–90
–100
10k
IQ = 10mA
IQ = 20mA
IQ = 15mA
100k
FREQUENCY (Hz)
1M
LT1795 G12
Second Harmonic Distortion vs
Frequency
–40
AV = 10 DIFFERENTIAL
–50
VOUT = 4VP-P
VS = ±12V
RLOAD = 50Ω
–60 IQ PER AMPLIFIER
–70 IQ = 10mA
–80 IQ = 5mA
–90 IQ = 20mA
IQ = 15mA
–100
10k
100k
FREQUENCY (Hz)
1M
LT1795 G15
5
5 Page 
PACKAGE DESCRIPTIO Dimensions in millimeters (inches) unless otherwise noted.
LT1795
FE Package
20-Lead Plastic TSSOP (4.4mm)
(LTC DWG # 05-08-1663)
6.40 – 6.60*
(0.252 – 0.260)
20 19 18 17 16 15 14 13 12 11
3.0
(0.118)
6.25 – 6.50
(0.246 – 0.256)
4.30 – 4.48**
(0.169 – 0.176)
0° – 8°
1 2 3 4 5 6 7 8 9 10
5.12
(0.202)
1.15
(0.453)
MAX
0.09 – 0.18
(0.0035 – 0.0071)
0.50 – 0.70
(0.020 – 0.028)
NOTE: DIMENSIONS ARE IN MILLIMETERS
*DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.152mm (0.006") PER SIDE
**DIMENSIONS DO NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.254mm (0.010") PER SIDE
0.65
(0.0256)
BSC
0.18 – 0.30
(0.0071 – 0.0118)
0.05 – 0.15
(0.002 – 0.006)
FE20 TSSOP 0200
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet LT1795.PDF ] | |
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