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Linear Technology Electronic Components Datasheet

LT1399 Datasheet

Low Cost Dual and Triple 300MHz Current Feedback Amplifiers with Shutdown

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FEATURES
s 300MHz Bandwidth on ± 5V (AV = 1, 2 and –1)
s 0.1dB Gain Flatness: 150MHz (AV = 1, 2 and –1)
s Completely Off in Shutdown, 0µA Supply Current
s High Slew Rate: 800V/µs
s Wide Supply Range:
±2V(4V) to ±6V(12V) (LT1398/LT1399)
±2V (4V) to ±7.5V (15V) (LT1399HV)
s 80mA Output Current
s Low Supply Current: 4.6mA/Amplifier
s Fast Turn-On Time: 30ns
s Fast Turn-Off Time: 40ns
s 16-Pin Narrow SO/Narrow SSOP Packages
U
APPLICATIO S
s RGB Cable Drivers
s LCD Drivers
s Spread Spectrum Amplifiers
s MUX Amplifiers
s Composite Video Cable Drivers
s Portable Equipment
TYPICAL APPLICATIO
3-Input Video MUX Cable Driver
VIN A
RG
200
A
CHANNEL
SELECT
+ EN A
1/3 LT1399
RF
324
BC
97.6
75
CABLE
VIN B
RG
200
+ EN B
1/3 LT1399
RF
324
97.6
VOUT
75
VIN C
RG
200
+ EN C
1/3 LT1399
RF
324
97.6
1399 TA01
LT1398/LT1399/LT1399HV
Low Cost Dual and Triple
300MHz Current Feedback
Amplifiers with Shutdown
DESCRIPTIO
The LT®1399 and LT1399HV contain three independent
300MHz current feedback amplifiers, each with a shut-
down pin. The LT1399HV is a higher voltage version of the
LT1399. The LT1398 is a two amplifier version of the
LT1399.
The LT1398/LT1399 operate on all supplies from a single
4V to ±6V. The LT1399HV operates on all supplies from 4V
to ±7.5V.
Each amplifier draws 4.6mA when active. When disabled
each amplifier draws zero supply current and its output be-
comes high impedance. The amplifiers turn on in only 30ns
and turn off in 40ns, making them ideal in spread spectrum
and portable equipment applications.
The LT1398/LT1399/LT1399HV are manufactured on Lin-
ear Technology’s proprietary complementary bipolar pro-
cess. The LT1399/LT1399HV are pin-for-pin upgrades to
the LT1260 optimized for use on ±5V/±7.5V supplies.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Square Wave Response
OUTPUT
200mV/DIV
RL = 100
RF = RG = 324
f = 10MHz
TIME (10ns/DIV)
1398/99 TA02
1


Linear Technology Electronic Components Datasheet

LT1399 Datasheet

Low Cost Dual and Triple 300MHz Current Feedback Amplifiers with Shutdown

No Preview Available !

LT1398/LT1399/LT1399HV
ABSOLUTE AXI U RATI GS (Note 1)
Total Supply Voltage (V + to V )
LT1398/LT1399 ................................................ 12.6V
LT1399HV ....................................................... 15.5V
Input Current (Note 2) ....................................... ±10mA
Output Current ................................................. ±100mA
Differential Input Voltage (Note 2) ........................... ±5V
Output Short-Circuit Duration (Note 3) ........ Continuous
Operating Temperature Range ............... – 40°C to 85°C
Specified Temperature Range (Note 4) .. – 40°C to 85°C
Storage Temperature Range ................ – 65°C to 150°C
Junction Temperature (Note 5) ............................ 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
PACKAGE/ORDER I FOR ATIO
TOP VIEW
–IN A 1
+IN A 2
*GND 3
*GND 4
*GND 5
*GND 6
+IN B 7
–IN B 8
A
B
16 EN A
15 OUT A
14 V+
13 GND*
12 GND*
11 V
10 OUT B
9 EN B
S PACKAGE
16-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 100°C/W
ORDER PART
NUMBER
LT1398CS
TOP VIEW
–IN R 1
+IN R 2
*GND 3
–IN G 4
+IN G 5
*GND 6
+IN B 7
–IN B 8
R
G
B
16 EN R
15 OUT R
14 V+
13 EN G
12 OUT G
11 V
10 OUT B
9 EN B
GN PACKAGE
S PACKAGE
16-LEAD PLASTIC SSOP 16-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 120°C/W (GN)
TJMAX = 150°C, θJA = 100°C/W (S)
ORDER PART
NUMBER
LT1399CGN
LT1399CS
LT1399HVCS
GN PART MARKING
1399
*Ground pins are not internally connected. For best channel isolation, connect to ground. Consult factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS (LT1398/LT1399)
The q denotes specifications which apply over the specified operating temperature range, otherwise specifications are at TA = 25°C.
For each amplifier: VCM = 0V, VS = ±5V, EN = 0V, pulse tested, unless otherwise noted. (Note 4)
SYMBOL
VOS
VOS/T
IIN+
IIN–
en
+ in
– in
RIN
CIN
COUT
VINH
PARAMETER
Input Offset Voltage
Input Offset Voltage Drift
Noninverting Input Current
Inverting Input Current
Input Noise Voltage Density
Noninverting Input Noise Current Density
Inverting Input Noise Current Density
Input Resistance
Input Capacitance
Output Capacitance
Input Voltage Range, High
CONDITIONS
MIN TYP MAX
UNITS
1.5 10
mV
q 12 mV
q 15
µV/°C
10 25
µA
q 30 µA
10 50
µA
q 60 µA
f = 1kHz, RF = 1k, RG = 10, RS = 0
f = 1kHz
4.5 nV/Hz
6 pA/Hz
f = 1kHz
25 pA/Hz
VIN = ±3.5V
Amplifier Enabled
Amplifier Disabled
q 0.3
1
2.0
2.5
M
pF
pF
Amplifier Disabled
8.5 pF
VS = ±5V
VS = 5V, 0V
q 3.5 4.0
4.0
V
V
2


Part Number LT1399
Description Low Cost Dual and Triple 300MHz Current Feedback Amplifiers with Shutdown
Maker Linear Technology
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LT1399 Datasheet PDF






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