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Linear Technology Electronic Components Datasheet

LT1497 Datasheet

Dual 125mA/ 50MHz Current Feedback Amplifier

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LT1497
Dual 125mA, 50MHz
Current Feedback Amplifier
FEATURES
s Minimum Output Current: ±125mA
s Maximum Supply Current per Amp: 7mA, VS = ±5V
s Bandwidth: 50MHz, VS = ±15V
s Slew Rate: 900V/µs, VS = ±15V
s Wide Supply Range: VS = ±2.5V to ±15V
(Enhanced θJA 16-Pin SO Package)
s Enhanced θJA SO-8 Package for ±5V Operation
s 0.02% Differential Gain: AV = 2, RL = 150
s 0.015° Differential Phase: AV = 2, RL = 150
s ±13V Output Swing: IL = 100mA, VS = ±15V
s ±3.1V Output Swing: IL = 100mA, VS = ±5V
s 55ns Settling Time to 0.1%, 10V Step
s Thermal Shutdown Protection
U
APPLICATIONS
s Twisted-Pair Drivers
s Video Amplifiers
s Cable Drivers
s Test Equipment Amplifiers
s Buffers
DESCRIPTION
The LT®1497 dual current feedback amplifier features low
power, high output drive, excellent video characteristics
and outstanding distortion performance. From a low 7mA
maximum supply current per amplifier, the LT1497 drives
±100mA with only 1.9V of headroom. Twisted pairs can be
driven differentially with – 70dBc distortion up to 1MHz for
±40mA peak signals.
The LT1497 is available in a low thermal resistance 16-pin
SO package for operation with supplies up to ±15V. For
±5V operation the device is also available in a low thermal
resistance SO-8 package. The device has thermal and
current limit circuits that protect against fault conditions.
The LT1497 is manufactured on Linear Technology’s
complementary bipolar process. The device has charac-
teristics that bridge the performance between the LT1229
and LT1207 dual current feedback amplifiers. The LT1229
has 30mA output drive, 100MHz bandwidth and 12mA
supply current. The LT1207 has 250mA output drive,
60MHz bandwidth and 40mA supply current.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATION
HDSL2 Single Pair Line Driver
560
560
1/2 LT1497
+
VIN
560
560
1/2 LT1497
+
68.1
1:1*
68.1*MIDCOM 671-7807
135
1419 TA01
2nd and 3rd Harmonic Distortion of
HDSL2 Single Pair Line Driver
– 40
VS = ± 5V
VIN = ±1.25V
– 50 VOUT = ± 2.5V
– 60
– 70 2ND
3RD
– 80
– 90
100k
1M
FREQUENCY (Hz)
2M
1497 TA02
1


Linear Technology Electronic Components Datasheet

LT1497 Datasheet

Dual 125mA/ 50MHz Current Feedback Amplifier

No Preview Available !

LT1497
ABSOLUTE MAXIMUM RATINGS
Total Supply Voltage (V+ to V )
LT1497CS8.......................................................... 14V
LT1497CS............................................................ 36V
Noninverting Input Current ................................... ±2mA
Output Short-Circuit Duration (Note 1) .......... Continuous
Operating Temperature Range (Note 2) ... – 40°C to 85°C
Specified Temperature Range ...................... 0°C to 70°C
Maximum Junction Temperature (See Below) ....... 150°C
Storage Temperature Range .................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................... 300°C
PACKAGE/ORDER INFORMATION
OUT A 1
–IN A 2
+IN A 3
V4
TOP VIEW
A
B
8 V+
7 OUT B
6 –IN B
5 +IN B
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 80°C/ W (NOTE 3)
ORDER PART
NUMBER
LT1497CS8
S8 PART MARKING
1497
Consult factory for Industrial and Military grade parts.
V1
NC 2
OUT A 3
–IN A 4
+IN A 5
V6
NC 7
V8
TOP VIEW
16 V
15 NC
14 V+
13 OUT B
A
12 –IN B
B
11 +IN B
10 NC
9 V
S PACKAGE
16-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 40°C/ W (NOTE 3)
ORDER PART
NUMBER
LT1497CS
ELECTRICAL CHARACTERISTICS
VCM = 0V, ±2.5V VS ≤ ±15V (LT1497CS), ±2.5V VS ≤ ±5V (LT1497CS8), pulse tested unless otherwise noted.
SYMBOL
VOS
IIN+
IIN–
en
+ in
– in
RIN
CIN
PARAMETER
Input Offset Voltage
Input Offset Voltage Matching
Input Offset Voltage Drift
Noninverting Input Current
Noninverting Input Current Matching
Inverting Input Current
Inverting Input Current Matching
Input Noise Voltage Density
Noninverting Input Noise Current Density
Inverting Input Noise Current Density
Input Resistance
Input Capacitance
CONDITIONS
TA = 25°C
TA = 25°C
TA = 25°C
TA = 25°C
TA = 25°C
TA = 25°C
f = 1kHz, RF = 1k, RG = 10, RS = 0
f = 1kHz, RF = 1k, RG = 10, RS = 10k
f = 1kHz, RF = 1k, RG = 10, RS = 10k
VIN = ±13V, VS = ±15V
VIN = ±3V, VS = ±5V
VIN = ±0.5V, VS = ±2.5V
MIN TYP MAX UNITS
±3 ±10
mV
q ±15 mV
±1 ±3.5
mV
q ±5.0 mV
q 10
µV/°C
±1 ±3
µA
q ±10 µA
±0.3 ±1.0
µA
q ±1.5 µA
±7 ±20
µA
q ±40 µA
±3 ±10
µA
q ±15 µA
3 nV/Hz
2 pA/Hz
20 pA/Hz
q 1.5 10
q 1.5
8
q 1.5
8
M
M
M
3 pF
2


Part Number LT1497
Description Dual 125mA/ 50MHz Current Feedback Amplifier
Maker Linear Technology
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LT1497 Datasheet PDF






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