Rainbow Electronics MAX4029 - Manual

General Description
The MAX4028/MAX4029 are 5V, triple/quad, 2:1 voltage-
feedback multiplexer-amplifiers with input clamps and a
fixed gain of +2V/V (6dB). Channel 1 (IN1A and IN1B)
inputs are clamped to the video sync tip of the input sig-
nal, while the remaining inputs can be clamped to either
the video sync tip or the video sync of channel 1 (IN1_).
The latter is referred to as a key clamp and is pin selec-
table. Selectable clamp/key-clamp inputs and fixed-gain
video output buffers make the MAX4028/MAX4029 ideal
for video-source switching applications such as automo-
tive entertainment systems, video projectors, and dis-
plays/TVs. Both devices have 20ns channel switching
times and low ±10mV
P-P switching transients, making
them ideal for high-speed video switching applications
such as on-screen display (OSD) insertion.
The MAX4028/MAX4029 have a -3dB large-signal (2V P-P )
bandwidth of 130MHz, a -3dB small-signal bandwidth of
210MHz, and a 300V/µs slew rate. Low differential gain
and phase errors of 0.2% and 0.4°, respectively, make
these devices ideal for broadcast video applications.
The MAX4028/MAX4029 are specified over the -40°C to
+85°C extended temperature range and are offered in
16-pin and 20-pin TSSOP/SO packages.
Applications
In-Car Navigation/Entertainment
Blade Servers
Security Systems
Video Projectors
Displays and Digital Televisions
Broadcast and Graphics Video
Set-Top Boxes
Notebook Computers
Video Crosspoint Switching
Features
♦ Single +5V Operation
♦ Independently Selectable Sync-Tip or
Key-Clamp Inputs
♦ Adjustable Key-Clamp Voltage
♦ 130MHz Large-Signal -3dB Bandwidth
♦ 210MHz Small-Signal -3dB Bandwidth
♦ 300V/µs Slew Rate
♦ 20ns Switching Time
♦ Ultra-Low ±10mV
P-P Switching Transient
♦ 0.2% Differential Gain/0.4° Phase Error
♦ Low-Power, High-Impedance Disable Mode
MAX4028/MAX4029
Triple/Quad, 2:1 Video
Multiplexer-Amplifiers with Input Clamps
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
MAX4028
MAX4029
75 Ω
75 Ω
IN1A
V CC
OUT1
CLAMP
A/B +5V
C IN
0.1 µF
0.01 µF 0.1 µF
1k Ω
1k Ω
C IN
0.1 µF
IN1B
CLAMP
75 Ω
75 Ω
IN2A
OUT2
DISABLE
CLAMP/KEY_2
CLAMP
C IN
0.1 µF
R KEYREF
6k Ω
1k Ω
1k Ω
C IN
0.1 µF
IN2B
KEYREF
CLAMP
KEY/CLAMP
CONTROL
75 Ω CABLE
75 Ω CABLE
75 Ω CABLE
75 Ω CABLE
75 Ω 75 Ω CABLE
75 Ω 75 Ω CABLE
Typical Operating Circuit
19-3240; Rev 0; 3/04
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Pin Configurations appear at end of data sheet.
PART TEMP RANGE PIN-PACKAGE
MAX4028EUE -40°C to +85°C 16 TSSOP
MAX4028EWE -40°C to +85°C 16 Wide SO
MAX4029EUP -40°C to +85°C 20 TSSOP
MAX4029EWP -40°C to +85°C 20 Wide SO
Selector Guide
PART
NO. OF 2:1
MUX-AMPS
GAIN
MAX4028 3 2V/V
MAX4029 4 2V/V