Datasheet LT1398, LT1399, LT1399HV (Analog Devices)

LT1398/LT1399/LT1399HV Low Cost Dual and Triple 300MHz Current Feedback Amplifiers with Shutdown
U FEATURES DESCRIPTIO
■
300MHz Bandwidth on
±
5V (AV = 1, 2 and –1)
The LT®1399 and LT1399HV contain three independent ■
0.1dB Gain Flatness: 150MHz (AV = 1, 2 and –1)
300MHz current feedback amplifiers, each with a shut- ■
Completely Off in Shutdown, 0
µ
A Supply Current
down pin. The LT1399HV is a higher voltage version of the ■ High Slew Rate: 800V/µs LT1399. The LT1398 is a two amplifier version of the ■ Wide Supply Range: LT1399. ±2V(4V) to ±6V(12V) (LT1398/LT1399) The LT1398/LT1399 operate on all supplies from a single ±2V (4V) to ±7.5V (15V) (LT1399HV) 4V to ■ ±6V. The LT1399HV operates on all supplies from 4V 80mA Output Current to ■ ±7.5V. Low Supply Current: 4.6mA/Amplifier ■ Fast Turn-On Time: 30ns Each amplifier draws 4.6mA when active. When disabled ■ Fast Turn-Off Time: 40ns each amplifier draws zero supply current and its output be- ■ 16-Pin Narrow SO/Narrow SSOP Packages comes high impedance. The amplifiers turn on in only 30ns
U
and turn off in 40ns, making them ideal in spread spectrum
APPLICATIO S
and portable equipment applications. ■ RGB Cable Drivers The LT1398/LT1399/LT1399HV are manufactured on Lin- ■ LCD Drivers ear Technology’s proprietary complementary bipolar pro- ■ Spread Spectrum Amplifiers cess. The LT1399/LT1399HV are pin-for-pin upgrades to ■ MUX Amplifiers the LT1260 optimized for use on ±5V/±7.5V supplies. ■ Composite Video Cable Drivers , LTC and LT are registered trademarks of Linear Technology Corporation. ■ Portable Equipment
U TYPICAL APPLICATIO 3-Input Video MUX Cable Driver
CHANNEL A B C SELECT EN A
Square Wave Response
VIN A + 97.6Ω RG 1/3 LT1399 200Ω – R 75Ω F 324Ω CABLE VOUT OUTPUT EN B 75Ω 200mV/DIV VIN B + 97.6Ω RG 1/3 LT1399 200Ω – RF 324Ω 1398/99 TA02 R TIME (10ns/DIV) L = 100Ω RF = RG = 324Ω EN C f = 10MHz VIN C + 97.6Ω RG 1/3 LT1399 1399 TA01 200Ω – RF 324Ω sn13989 13989fas 1