Electronics
Semiconductor Division
RC6704
Triple Fixed Gain Video Amplifier
with Separate Enable Inputs
Features
Description
• Triple video amplifier with internal resistors to set gains to
+2, +1, and -1
• Independently enabled amplifiers
The RC6704 consists of three low power, wide band voltage
feedback operational amplifiers. Internal thin-film gain set-
ting resistors provide gains of +2, +1 and -1. Each channel is
capable of delivering a load current of at least 35mA.
• 60 MHz -3 dB Bandwidth (A = 2)
V
• 20 MHz ±0.1 dB gain flatness
• 0.06% differential gain (A = 2, R = 150Ω)
Each amplifier can be independently enabled or disabled
with a TTL or CMOS signal. When disabled, the amplifier is
in a high impedance output state, presenting a very high
input to output isolation. The layout is optimized for low
channel to channel crosstalk.
V
L
• 0.06° differential phase (A = 2, R = 150Ω)
V
L
• High CMRR (75 dB), High PSRR (70 dB)
• Dual ±5V power supply
• Low offset 2.0 mV
• 16-pin narrow SOIC package
• 300 V/µs slew rate
• Fast settling time: 0.1% in 35 ns
• Voltage gain accuracy better than 0.5%
• TTL or CMOS compatible enable inputs
The amplifiers are optimized for video applications where
low differential gain and low phase distortion are significant
requirements.
Applications
• RGB amplifier
• 3:1 crosspoint switch
• RGB switch
Block Diagram
R
R
R
R
• Video instrumentation amplifier
• Selectable gain amplifier
• Programmable filter
• Active filter
IN1–
IN1+
V
CCO
R/2
OUT1
EN1
V
CC
R
IN2–
IN2+
OUT2
EN2
R/2
V
OUT3
EN3
EE
R
IN3–
IN3+
R/2
V
EEO
65-7450
R = 500Ω
Rev. 1.0.1