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PDF MAX9541 Data sheet ( Hoja de datos )
| Número de pieza | MAX9541 | |
| Descripción | (MAX9541 / MAX9542) Mux Amplifiers | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX9541 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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19-4457; Rev 0; 2/09
Quadruple, 2:1, Mux Amplifiers for
Standard-Definition and VGA Signals
General Description
The MAX9541/MAX9542 are quadruple-channel, 2:1
video mux amplifiers with input sync tip clamps. These
devices select between two video sources and support
up to four channels on each source. The MAX9541 has
integrated lowpass filters that are optimized for standard-
definition video signals such as composite and red,
green, blue (RGB). The filters typically have ±1dB pass-
band flatness out to 9.5MHz and 47dB attenuation at
27MHz. The MAX9542 has a wider bandwidth of 15MHz
because it does not have integrated lowpass filters, mak-
ing it suitable for not only standard-definition video sig-
nals, but also video graphics array (VGA) signals with a
640 x 480 resolution at up to 85Hz refresh rate.
Video signals are AC-coupled to the inputs of the
MAX9541/MAX9542. The input sync-tip clamps set the
internal DC level.
The amplifiers have 2V/V gain, and the outputs can be
DC-coupled to a 75Ω load, which is the equivalent of two
video loads, or AC-coupled to a 150Ω load.
Both the MAX9541/MAX9542 feature a low-power shut-
down mode, in which supply current is reduced to 35µA.
Applications
Automotive Infotainment
Features
♦ Quad 2:1 Video Mux Amplifiers
♦ Reconstruction Filters with 9.5MHz Passband and
47dB Attenuation at 27MHz (MAX9541)
♦ Fixed Gain of 2V/V
♦ Input Sync-Tip Clamps
♦ Shutdown
♦ 2.7V to 3.6V Single-Supply Operation
Ordering Information
PART
PIN-PACKAGE
STANDARD-
DEFINITION
VIDEO FILTER
MAX9541AEE+
16 QSOP
Yes
MAX9542AEE+
16 QSOP
No
Note: All devices are specified over the -40°C to +125°C oper-
ating temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
Functional Diagram
www.DataSheet4U.com
UNKNOWN
BIAS
SHDN
A/B
IN0A
IN1A
IN2A
IN3A
IN0B
IN1B
IN2B
IN3B
VDD
MAX9541
0 MAX9542
1
CLAMPREF
0
1
OUT0
LPF* 2V/V
300mV
LPF* 2V/V OUT1
CLAMPREF
0
1 LPF* 2V/V OUT2
CLAMPREF
0
1
CLAMPREF
OUT3
LPF* 2V/V
*LOWPASS FILTER IN MAX9541 ONLY.
GND
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1 page  
Quadruple, 2:1, Mux Amplifiers for
Standard-Definition and VGA Signals
Typical Operating Characteristics (continued) (MAX9541)
(VDD = 3.3V, VGND = 0, SHDN = VDD, A/B = VDD, RL = 150Ω to GND, TA = +25°C.)
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
0
DIFFERENTIAL GAIN
f = 4.43MHz
1234
DIFFERENTIAL PHASE
5
f = 4.43MHz
12345
2T RESPONSE
MAX9541 toc11
IN
200mV/div
100ns/div
OUT
400mV/div
12.5T RESPONSE
MAX9541 toc12
IN
200mV/div
400ns/div
OUT
400mV/div
NTC-7 VIDEO TEST SIGNAL
MAX9541 toc13
IN
500mV/div
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10μs/div
OUT
1V/div
FIELD SQUARE WAVE
MAX9541 toc14
IN
500mV/div
OUT
1V/div
2ms/div
VIDEO SYNC-TIP CLAMP VOLTAGE
vs. TEMPERATURE
0.37
0.36
0.35
0.34
0.33
0.32
0.31
0.30
0.29
0.28
-50 -25
0 25 50 75 100 125
TEMPERATURE (°C)
VIDEO SYNC-TIP CLAMP CURRENT
vs. TEMPERATURE
1.06
1.04
1.02
1.00
0.98
0.96
0.94
0.92
0.90
-50 -25
0 25 50 75 100 125
TEMPERATURE (°C)
SYNC-TIP CLAMP CURRENT
vs. INPUT VOLTAGE
500
400
300
200
100
0
-100
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
INPUT VOLTAGE (V)
QUIESCENT SUPPLY CURRENT
vs. TEMPERATURE
22.0
21.5
21.0
20.5
20.0
19.5
19.0
18.5
18.0
-50 -25
0 25 50 75 100 125
TEMPERATURE (°C)
_______________________________________________________________________________________ 5
5 Page 
Quadruple, 2:1, Mux Amplifiers for
Standard-Definition and VGA Signals
VDD
PC NO. 1
RED
GREEN
BLUE
NOT
USED
RED
GREEN
www.DataSheet4U.cBoLUmE
PC NO. 2
NOT
USED
0.1μF
IN0A
75Ω
CLAMPREF
0.1μF
IN1A
75Ω
CLAMPREF
0.1μF
IN2A
75Ω
CLAMPREF
0.1μF
IN3A
75Ω
CLAMPREF
0.1μF
IN0B
75Ω
CLAMPREF
0.1μF
IN1B
75Ω
CLAMPREF
0.1μF
IN2B
75Ω
CLAMPREF
0.1μF
IN3B
75Ω
CLAMPREF
Figure 2. The MAX9542 Selecting Between Two VGA Sources
MAX9542
2V/V
A/B
OUT0
75Ω
MONITOR
RED
OUT1
2V/V
75Ω
GREEN
2V/V OUT2
75Ω
BLUE
OUT3
2V/V
75Ω
NOT
USED
GND
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet MAX9541.PDF ] | |
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