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MAX4028EWE+

P1-P3P4-P6P7-P9P10-P12P13-P13
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
75Ω
75Ω
IN1A
V
CC
OUT1
CLAMP
A/B
+5V
C
IN
0.1µF
0.01µF
0.1µF
1kΩ
1kΩ
C
IN
0.1µF
IN1B
CLAMP
75Ω
75Ω
IN2A
OUT2
DISABLE
CLAMP/KEY_2
CLAMP
C
IN
0.1µF
R
KEYREF
6kΩ
1kΩ
1kΩ
C
IN
0.1µF
IN2B
KEYREF
CLAMP
KEY/CLAMP
CONTROL
75Ω CABLE
75Ω CABLE
75Ω CABLE
75Ω CABLE
75Ω
75Ω CABLE
75Ω
75Ω 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.
EVALUATION KIT
AVAILABLE
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
MAX4028/MAX4029
Triple/Quad, 2:1 Video
Multiplexer-Amplifiers with Input Clamps
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +5V, GND = 0V, R
L
= 150Ω to GND, V
DISABLE
= +5V, R
KEYREF
= 6kΩ, C
IN
= 0.1µF to GND, T
A
= T
MIN
to T
MAX
, unless otherwise
noted. Typical values are at T
A
= +25°C.) (Note 2)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Supply Voltage (V
CC
to GND) ..................................-0.3V to +6V
IN_A, IN_B, OUT_.......................................-0.3V to (V
CC
+ 0.3V)
DISABLE, A/B, KEYREF, CLAMP/KEY_......-0.3V to (V
CC
+ 0.3V)
Current Into IN_A, IN_B ...................................................±0.5mA
Short-Circuit Duration (V
OUT
to GND)........................Continuous
Short-Circuit Duration (V
OUT
to V
CC
) .............................(Note 1)
Continuous Power Dissipation (T
A
= +70°C)
16-Pin TSSOP (derate 9.4mW/°C above +70°C) .........755mW
16-Pin Wide SO (derate 9.5mW/°C above +70°C) ......762mW
20-Pin TSSOP (derate 11mW/°C above +70°C) ..........879mW
20-Pin Wide SO (derate 10mW/°C above +70°C) .......800mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER
SYMBOL
CONDITIONS MIN TYP MAX
UNITS
Operating Supply Voltage Range V
CC
Guaranteed by PSRR 4.5 5.5 V
MAX4028, R
L
= ∞ 29 40
Quiescent Supply Current I
CC
MAX4029, R
L
= ∞ 38 55
mA
MAX4028 9 15
Disable Supply Current V
DISABLE
= 0V
MAX4029 11 20
mA
Clamp (Note 3) 0.32 0.4 0.48
Output Clamp Voltage V
CLAMP
Key clamp (Note 4) 1.1
V
Input Clamping Current I
IN
Input voltage = input clamp + 0.5V 5 18 µA
Clamp Voltage Matching
∆V
CLAMP
Measured at output 10 mV
Clamp Voltage Drift
TC
VCLAMP
Measured at output 80
µV/°C
Input Resistance R
IN
7
MΩ
Output Resistance R
OUT
0.7 Ω
Disable Output Resistance R
OUT
V
DISABLE
= 0V 2 kΩ
Power-Supply Rejection Ratio PSRR 4.5V < V
CC
< 5.5V (Note 5) 48 58 dB
Voltage Gain A
VCL
1.9 2.0 2.1 V/V
Channel-to-Channel Gain Matching
∆A
VCL
±1 ±2 %
Output-Voltage High V
OH
V
CLAMP
+ 2.4
V
Output-Voltage Low V
OL
V
CLAMP
V
Output Current I
OUT
30 mA
LOGIC INPUT CHARACTERISTICS (DISABLE , A/B, CLAMP/KEY_)
Logic-Low Threshold V
IL
0.8 V
Logic-High Threshold V
IH
2.0 V
Logic-Low Input Current I
IL
V
IL
= 0V 6.6 25 µA
Logic-High Input Current I
IH
V
IH
= V
CC
1.2 25 µA
Note 1: Do not short V
OUT
to V
CC
.
MAX4028/MAX4029
Triple/Quad, 2:1 Video
Multiplexer-Amplifiers with Input Clamps
_______________________________________________________________________________________ 3
AC ELECTRICAL CHARACTERISTICS
(V
CC
= +5V, GND = 0V, R
L
= 150Ω to GND, V
DISABLE
= +5V, R
KEYREF
= 6kΩ, C
IN
= 0.1µF, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are at T
A
= +25°C.)
Note 2: All devices are 100% production tested at T
A
= +25°C. Specifications over temperature are guaranteed by design.
Note 3: The clamp voltage at the input is V
CLAMP
(measured at the output) divided by gain + V
BE
.
Note 4: The key-clamp voltage is above the sync-tip clamp voltage by approximately 0.7V, and is adjusted by varying R
KEYREF
.
Note 5: Measured at f = 100Hz at thermal equilibrium.
PARAMETER
CONDITIONS MIN TYP MAX
UNITS
Small-Signal -3dB Bandwidth BW
SS
V
OUT
= 100mV
P-P
210
MHz
Large-Signal -3dB Bandwidth BW
LS
V
OUT
= 2V
P-P
130
MHz
Small-Signal 0.1dB Gain Flatness
Bandwidth
BW
0.1dBSS
V
OUT
= 100mV
P-P
30
MHz
Large-Signal 0.1dB Gain Flatness
Bandwidth
BW
0.1dBLS
V
OUT
= 2V
P-P
30
MHz
Slew Rate SR V
OUT
= 2V
P-P
300 V/µs
Settling Time to 0.1% t
S
V
OUT
= 2V step 20 ns
Power-Supply Rejection Ratio PSRR f = 100kHz 55 dB
Output Impedance Z
O
f = 100kHz 0.7 Ω
Differential Gain Error DG 5-step modulated staircase 0.2 %
Differential Phase Error DP 5-step modulated staircase 0.4
degrees
Group Delay D/dT f = 3.58MHz or 4.43MHz 1.0 ns
Peak Signal to RMS Noise SNR 100kHz to 30MHz 70 dB
Channel-to-Channel Crosstalk X
TALK
f = 100kHz 73 dB
A/B Crosstalk
X
TALKAB
f = 100kHz 91 dB
Off-Isolation A
ISO
V
OUT_
= 2V
P-P
, f = 100kHz 108 dB
Droop D
R
Guaranteed by input clamp current 2 %
SWITCHING CHARACTERISTICS
Channel Switching Time t
SW
20 ns
Enable Time t
ON
0.1 µs
Disable Time t
OFF
0.1 µs
Switching Transient ±10
mV
P-P
P1-P3P4-P6P7-P9P10-P12P13-P13

MAX4028EWE+

Mfr. #:
Buy MAX4028EWE+
Manufacturer:
Maxim Integrated
Description:
Video Amplifiers Triple & Quad 2:1 Video MUX-Amplifie
Lifecycle:
New from this manufacturer.
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