LT1260 LINER [Linear Technology], LT1260 Datasheet

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LT1260

Manufacturer Part Number
LT1260
Description
Low Cost Dual and Triple 130MHz Current Feedback Amplifiers with Shutdown
Manufacturer
LINER [Linear Technology]
Datasheet

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FEATURES
TYPICAL APPLICATIO
APPLICATIO S
90MHz Bandwidth on 5V
0.1dB Gain Flatness > 30MHz
Completely Off in Shutdown, 0 A Supply Current
High Slew Rate: 1600V/ s
Wide Supply Range: 2V(4V) to 15V(30V)
60mA Output Current
Low Supply Current: 5mA/Amplifier
Differential Gain: 0.016%
Differential Phase: 0.075
Fast Turn-On Time: 100ns
Fast Turn-Off Time: 40ns
14-Pin and 16-Pin Narrow SO Packages
RGB Cable Drivers
Spread Spectrum Amplifiers
MUX Amplifiers
Composite Video Cable Drivers
Portable Equipment
V
V
IN A
IN B
1.6k
1.6k
R
R
G
G
2-Input Video MUX Cable Driver
+
+
1/2 LT1259
1/2 LT1259
U
A
EN A
EN B
CHANNEL
1.6k
1.6k
SELECT
R
R
F
F
B
LT1259/60 • TA01
U
75
75
75
75
CABLE
V
OUT
DESCRIPTIO
The LT
feedback amplifiers, each with a shutdown pin. These
amplifiers are designed for excellent linearity while driving
cables and other low impedance loads. The LT1260 is a
triple version especially suited to RGB video applications.
These amplifiers operate on all supplies from single 5V to
When shut down, the LT1259/LT1260 amplifiers draw
zero supply current and their outputs become high
impedance. Only two LT1260s are required to make a
complete 2-input RGB MUX and cable driver. These
amplifiers turn on in only 100ns and turn off in 40ns,
making them ideal in spread spectrum and portable
equipment applications.
The LT1259/LT1260 amplifiers are manufactured on
Linear Technology’s proprietary complementary bipolar
process.
15V and draw only 5mA per amplifier when active.
130MHz Current Feedback
, LTC and LT are registered trademarks of Linear Technology Corporation.
Amplifiers with Shutdown
Low Cost Dual and Triple
®
R
f = 30MHz
1259 contains two independent 130MHz current
L
= 150
Square Wave Response
U
LT1259/LT1260
LT1259/50 • TA02
1

Related parts for LT1260

LT1260 Summary of contents

Page 1

... These amplifiers are designed for excellent linearity while driving cables and other low impedance loads. The LT1260 is a triple version especially suited to RGB video applications. These amplifiers operate on all supplies from single 5V to 15V and draw only 5mA per amplifier when active ...

Page 2

... 5V ORDER PART NUMBER OUT R + LT1260CN 14 V LT1260CS LT1260IN 12 OUT G – LT1260IS OUT PACKAGE 16-LEAD PLASTIC SOIC = 70 C/W ( 100 C/W (S) JA MIN TYP MAX 0 120 3 ...

Page 3

... 12V 1.5k 150 15V, EN pins = 0V, pulse tested, unless otherwise noted. S CONDITIONS 15V, EN Pin Voltage = 14.5V 150 15V, EN Pin Voltage = 0V S LT1259/LT1260 MIN TYP MAX UNITS 12.0 14.0 V 3.0 3 3.5 10 A/V 10 A/V 4.5 15 ...

Page 4

... FREQUENCY (MHz) 4 Note 5: The supply current of the LT1259/LT1260 has a negative temperature coefficient. See Typical Performance Characteristics. Note 6: Slew rate is measured 10V output signal while operating on 15V supplies with R Note 7: Turn-on delay time is measured while operating on 5V supplies with R from control input to appearance of 0 ...

Page 5

... FREQUENCY (MHz) LT12359/60 • TPC06 Spot Noise Voltage and Current vs Frequency 100 – 100 1k 10k FREQUENCY (Hz) LT1259/60 • TPC09 LT1259/LT1260 = –20 –40 PHASE –60 –80 –100 GAIN –120 –140 = ±5V –160 = 150 = 825 –180 = 90.9 –200 10 ...

Page 6

... LT1259/LT1260 W U TYPICAL PERFOR A CE CHARACTERISTICS Output Impedance in Shutdown vs Frequency 100 V = ± 1. 0.1 100k 1M 10M 100M FREQUENCY (Hz) LT1259/60 • TPC11 Output Saturation Voltage vs Temperature + ±2V V ±18V –0.5 S –1.0 1.0 0.5 – V – 100 125 –25 0 TEMPERATURE (°C) LT1259/60 • TPC14 ...

Page 7

... U U APPLICATIO S I FOR ATIO Feedback Resistor Selection The small-signal bandwidth of the LT1259/ LT1260 are set by the external feedback resistors and the internal junction capacitors result, the bandwidth is a function of the supply voltage, the value of the feedback resistor, the closed-loop gain and the load resistor. The LT1259/LT1260 have been optimized for 5V supply operation and have a – ...

Page 8

... LT1259/LT1260 U U APPLICATIO S I FOR ATIO The input slew rate of the LT1259/LT1260 is approxi- mately 270V/ s and is set by internal currents and capaci- tances. The output slew rate is set by the value of the feedback resistors and internal capacitances gain of 10 with at 1k feedback resistor and 15V supplies, the output slew rate is typically 1600V/ s ...

Page 9

... Demo Board #039A. The board incorporates two LT1260s with outputs summed through 75 resistors as shown in the schematic. There are several things to note about Demo Board #039A: 1. The feedback resistors of the disabled LT1260 load EN A the enabled amplifier and cause a small (1% to 2%) gain error depending on the values of R ...

Page 10

... FREQUENCY (MHz) LT1259/60 • TA06 P-DIP PC Board #039 V+ V– GND EN2 EN1 R13 R14 R4 C3 R15 R16 C7 R9 R10 R17 C8 R18 R11 R12 (408) 432-1900 LT1260 RGB AMPLIFIER DEMONSTRATION BOARD LT1259/60 • TA07 ...

Page 11

... TYP S Package 16-Lead Plastic Small Outline (Narrow 0.150) (LTC DWG # 05-08-1610) 0.004 – 0.010 (0.101 – 0.254) 0.228 – 0.244 (5.791 – 6.197) 0.050 (1.270) TYP LT1259/LT1260 0.770* (19.558) MAX 0.255 0.015 ...

Page 12

... C3 + 0.1 F R15 B 9 – C4 4.7 F C6 – LT1260 C7 13 – – *OPTIONAL COMMENTS 2:1 and Dual 2:1 MUXes with 25ns Switch Time Cascadable Enable 64:1 Multiplexing 1100V/ s Slew Rate, Shutdown Mode Single, Dual and Quad Current Feedback Amplifiers ...

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