MAX4028EWE 查看數據表（PDF） - Maxim Integrated
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MAX4028EWE Datasheet PDF : 12 Pages
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MAX4028/MAX4029
EVALUATION KIT AVAILABLE
Triple/Quad, 2:1 Video
Multiplexer-Amplifiers with Input Clamps
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
signal, 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
selectable. Selectable clamp/key-clamp inputs and fixed-
gain video output buffers make the MAX4028/MAX4029
ideal for video-source switching applications such as
entertainment systems, video projectors, and displays/
TVs. Both devices have 20ns channel switching times
and low ±10mVP-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 (2VP-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
●● Blade Servers
●● Security Systems
●● Video Projectors
●● Displays and Digital Televisions
●● Broadcast and Graphics Video
●● Set-Top Boxes
●● Notebook Computers
●● Video Crosspoint Switching
Selector Guide
PART
MAX4028
MAX4029
NO. OF 2:1
MUX-AMPS
3
4
GAIN
2V/V
2V/V
Pin Configurations appear at end of data sheet.
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 ±10mVP-P Switching Transient
●● 0.2% Differential Gain/0.4° Phase Error
●● Low-Power, High-Impedance Disable Mode
Ordering Information
PART
TEMP RANGE
MAX4028EUE
-40°C to +85°C
MAX4028EWE
-40°C to +85°C
MAX4029EUP
-40°C to +85°C
MAX4029EWP
-40°C to +85°C
PIN-PACKAGE
16 TSSOP
16 Wide SO
20 TSSOP
20 Wide SO
Typical Operating Circuit
75Ω CABLE
CIN
0.1µF
IN1A
75Ω
75Ω CABLE
CLAMP
CIN
0.1µF
IN1B
75Ω
75Ω CABLE
CLAMP
CIN
0.1µF
IN2A
A/B
MAX4028
MAX4029
1kΩ
1kΩ
VCC
0.1µF
+5V
0.01µF
OUT1 75Ω 75Ω CABLE
75Ω
75Ω CABLE
CLAMP
CIN
0.1µF
IN2B
75Ω
CLAMP
1kΩ
1kΩ
RKEYREF
6kΩ
KEYREF
KEY/CLAMP
CONTROL
OUT2 75Ω 75Ω CABLE
DISABLE
CLAMP/KEY_2
19-3240; Rev 1; 4/15
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