LT6554_15 Datasheet, PDF (1/12 Pages) Linear Technology – 650MHz Gain of 1 Triple Video Buffer

LT6554
650MHz Gain of 1
Triple Video Buffer
FEATURES
■ _{650MHz –3dB Small Signal Bandwidth}
■ _{400MHz –3dB 2VP-P Large Signal Bandwidth}
■ _{100MHz ±0.1dB Bandwidth}
■ _{High Slew Rate: 2500V/µs}
■ _{Fixed Gain of 1 Requires No External Resistors}
■ _{90dB Channel Separation at 10MHz}
■ _{60dB Channel Separation at 100MHz}
■ _{–82dBc 2nd Harmonic Distortion at 10MHz, 2VP-P}
■ _{–96dBc 3rd Harmonic Distortion at 10MHz, 2VP-P}
■ _{Low Supply Current: 8mA per Amplifier}
■ _{6ns 0.1% Settling Time for 2V Step}
■ _{TTL Compatible Enable: ISS ≤ 100µA When Disabled}
■ _{Differential Gain of 0.022%, Differential}
Phase of 0.006°
■ _{Wide Supply Range: ±2.25V (4.5V) to ±6V (12V)}
■ _{Available in 16-Lead SSOP Package}
U
APPLICATIO S
■ _{RGB Buffers}
■ _{A/D Drivers}
■ _{LCD Projectors}
DESCRIPTIO
The LT^®6554 is a high-speed triple video buffer with an
internally fixed gain of 1. The individual buffers are opti-
mized for performance with a 1k load and feature a
2V_P–P full signal bandwidth of 400MHz, making them ideal
for driving very high-resolution video signals. Separate
power supply pins for each amplifier boost channel sepa-
ration to 90dB, allowing the LT6554 to excel in many high-
speed applications.
While the performance of the LT6554 is optimized for dual
supply operation, it can also be used on a single supply as
low as 4.5V. Using dual 5V supplies, each amplifier draws
only 8mA. When disabled, the amplifiers draw less than
100µA and the outputs become high impedance. Further-
more, the amplifiers are capable of turning on in less than
50ns, making them suitable for multiplexing and portable
applications.
The LT6554 is manufactured on Linear Technology’s
proprietary low voltage complementary bipolar process
and is available in the 16-lead SSOP package that fits in the
same PCB area as an SO-8 package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
Triple Video Buffer and A/D Driver
5V
1
16
2
LT6554
15
3
R_IN
4
5
G_IN
6
7
B_IN
8
–5V
+
–
480Ω
480Ω
–
+
480Ω
–
+
14
1k
13
–5V
12
1k
11
5V
10
9 _–5V
1k
6554 TA01a
Large Signal Transient Response
1.5 _{VOUT = 2VP–P}
V_S = ±5V
1.0 ^RL ^{= 1k}
T_A = 25°C
0.5
0
–0.5
–1.0
–1.5
0 2 4 6 8 10 12 14 16 18 20
TIME (ns)
6554 TA01b
6554fa
1