LT1187 Datasheet, PDF (1/12 Pages) Linear Technology – Low Power Video Difference Amplifier

LT1187
Low Power
Video Difference Amplifier
FEATURES
s _{Differential or Single-Ended Gain Block (Adjustable)}
s _{–3dB Bandwidth, AV = ± 2}
s _{Slew Rate}
50MHz
165V/µs
s _{Low Supply Current}
13mA
s _{Output Current}
± 20mA
s _{CMRR at 10MHz}
40dB
s _{LT1193 Pin Compatible}
s _{Low Cost}
s _{Single 5V Operation}
s _{Drives Cables Directly}
s _{Output Shutdown}
APPLICATI S
s _{Line Receivers}
s _{Video Signal Processing}
s _{Cable Drivers}
s _{Tape and Disc Drive Systems}
DESCRIPTIO
The LT1187 is a difference amplifier optimized for opera-
tion on ±5V, or a single 5V supply, and gain ≥2. This
versatile amplifier features uncommitted high input im-
pedance (+) and (–) inputs, and can be used in differential
or single-ended configurations. Additionally, a second set
of inputs give gain adjustment and DC control to the
difference amplifier.
The LT1187’s high slew rate, 165V/µs, wide bandwidth,
50MHz, and ±20mA output current require only 13mA of
supply current. The shutdown feature reduces the power
dissipation to a mere 15mW, and allows multiple amplifi-
ers to drive the same cable.
The LT1187 is a low power version of the popular LT1193,
and is available in 8-pin miniDIPs and SO packages. For
applications with gains of 10 or more, see the LT1189
data sheet.
TYPICAL APPLICATI
Cable Sense Amplifier for Loop Through Connections
with DC Adjust
V_IN
CABLE
V_DC
5V
3
+
2
7
–
6
1
LT1187
+
8–
4
–5V
1k
V_OUT
1k
LT1187 • TA01
Closed-Loop Gain vs Frequency
40
V_S = ±5V
R_L = 1k
30
20
10
0
–10
0.1
1
10
FREQUENCY (MHz)
100
LT1187 • TA02
1