MAX4028 Maxim, MAX4028 Datasheet

no-image

MAX4028

Manufacturer Part Number
MAX4028
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)
Manufacturer
Maxim
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MAX4028EWE+
Manufacturer:
Maxim Integrated Products
Quantity:
135
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
them ideal for high-speed video switching applications
such as on-screen display (OSD) insertion.
The MAX4028/MAX4029 have a -3dB large-signal (2V
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.
19-3240; Rev 0; 3/04
Pin Configurations appear at end of data sheet.
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.
MAX4028
MAX4029
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
PART
Multiplexer-Amplifiers with Input Clamps
________________________________________________________________ Maxim Integrated Products
P-P
MUX-AMPS
NO. OF 2:1
General Description
switching transients, making
3
4
Selector Guide
Applications
GAIN
2V/V
2V/V
P-P
)
♦ Single +5V Operation
♦ Independently Selectable Sync-Tip or
♦ Adjustable Key-Clamp Voltage
♦ 130MHz Large-Signal -3dB Bandwidth
♦ 210MHz Small-Signal -3dB Bandwidth
♦ 300V/µs Slew Rate
♦ 20ns Switching Time
♦ Ultra-Low ±10mV
♦ 0.2% Differential Gain/0.4° Phase Error
♦ Low-Power, High-Impedance Disable Mode
MAX4028EUE
MAX4028EWE
MAX4029EUP
MAX4029EWP
75Ω CABLE
75Ω CABLE
75Ω CABLE
75Ω CABLE
Triple/Quad, 2:1 Video
Key-Clamp Inputs
R
KEYREF
PART
75Ω
75Ω
75Ω
75Ω
6kΩ
0.1µF
0.1µF
0.1µF
0.1µF
C
C
C
C
IN
IN
IN
IN
IN1A
IN1B
IN2A
KEYREF
Typical Operating Circuit
IN2B
CLAMP
CLAMP
CLAMP
CLAMP
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
P-P
Ordering Information
A/B
KEY/CLAMP
Switching Transient
CONTROL
1kΩ
1kΩ
MAX4028
MAX4029
1kΩ
1kΩ
V
CC
16 TSSOP
16 Wide SO
20 TSSOP
20 Wide SO
PIN-PACKAGE
0.1µF
OUT1
OUT2
Features
DISABLE
CLAMP/KEY_2
75Ω
75Ω
+5V
75Ω CABLE
75Ω CABLE
0.01µF
1

Related parts for MAX4028

MAX4028 Summary of contents

Page 1

... 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. ...

Page 2

... Operating Temperature Range ...........................-40°C to +85°C CC Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C = +5V 6kΩ, C DISABLE KEYREF IN CONDITIONS V Guaranteed by PSRR CC = ∞ MAX4028 ∞ MAX4029 MAX4028 DISABLE MAX4029 Clamp (Note 3) V CLAMP ...

Page 3

Multiplexer-Amplifiers with Input Clamps AC ELECTRICAL CHARACTERISTICS (V = +5V, GND = 0V 150Ω to GND Typical values are +25°C.) A PARAMETER Small-Signal -3dB Bandwidth Large-Signal -3dB Bandwidth Small-Signal 0.1dB Gain Flatness ...

Page 4

Triple/Quad, 2:1 Video Multiplexer-Amplifiers with Input Clamps (V = +5V, GND = 0V +5V, R DISABLE CC noted.) SMALL-SIGNAL BANDWIDTH vs. FREQUENCY 100mV OUT P ...

Page 5

... V OUT 1V/div 100k 1M 10ns/div CHANNEL-SWITCHING TIME (CHA = 1.5VDC, CHB = 1VDC) MAX4028 toc14 5VDC A/B 2.5V/div 0VDC V OUT 500mV/div 20ns/div OPTIMAL ISOLATION RESISTANCE vs. CAPACITIVE LOAD 100M 100 C LOAD MAX4028 toc12 1.6VDC MAX4028 toc15 5VDC 0VDC 150 200 250 (pF) 5 ...

Page 6

... Triple/Quad, 2:1 Video Multiplexer-Amplifiers with Input Clamps (V = +5V, GND = 0V +5V, R DISABLE CC noted.) CLAMP VOLTAGE vs. TEMPERATURE 0.43 0.42 0.41 0.40 0.39 0.38 0.37 -50 - TEMPERATURE (°C) PIN NAME MAX4028 MAX4029 — 1 IN4A 1 2 IN3A 2 3 IN2A 3 4 IN1A KEYREF 6 7 IN1B 7 8 IN2B 8 9 IN3B — ...

Page 7

... OSD insertion. The MAX4028/MAX4029 have a -3dB large-signal (2V bandwidth of 130MHz, a -3dB small-signal bandwidth of 210MHz, and a 300V/µs slew rate. Low differential gain OUT3 and phase errors of 0.2% and 0.4° ...

Page 8

... KEY-CLAMP REFERENCE VOLTAGE vs. R KEYREF 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0 (kΩ) KEYREF Figure 2. Key-Clamp Reference Voltage vs. R Table 1. MAX4028 Clamp Settings for Video Formats INPUT FORMAT 1 Cvbs1 2 Cvbs2 3 Cvbs3 INPUT FORMAT 1 G’ 2 B’ 3 R’ have sync on all. INPUT FORMAT 1 Gs ...

Page 9

... Cvbs 4 Cvbs The MAX4028/MAX4029 have a fixed gain of +2V/V that is internally set with two 1kΩ thin-film resistors. The impedance of the internal feedback resistors must be taken into account when operating multiple MAX4028/ MAX4029s in large multiplexer applications. Applications Information Video Line Driver The MAX4028/MAX4029 are well suited to drive coaxial ...

Page 10

... MAX4028 MAX4029 Figure 5. Using an Isolation Resistor (R ISO ) for a High- Capacitive Load Although the MAX4028/MAX4029 are optimized for AC performance and are not designed to drive highly capacitive loads, they are capable of driving up to 15pF without oscillations. However, some peaking may occur in the frequency domain (Figure 4). To drive larg- er capacitive loads or to reduce ringing, add an isola- tion resistor between the amplifier’ ...

Page 11

... V plane, located as close to the package as possible. Optionally, place a 10µF capacitor at the power supply’s point-of-entry to the PC board to ensure the integrity of incoming supplies. The power-supply traces should lead TOP VIEW IN3A 1 IN2A 2 IN1A 3 MAX4028 A/B 4 KEYREF 5 IN1B 6 IN2B 7 IN3B 8 TSSOP/SO ...

Page 12

... Triple/Quad, 2:1 Video Multiplexer-Amplifiers with Input Clamps (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) 12 ______________________________________________________________________________________ Package Information PACKAGE OUTLINE, TSSOP 4.40mm BODY 1 21-0066 I 1 ...

Page 13

... A1 FRONT VIEW Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 © ...

Related keywords