MAX9658 Maxim, MAX9658 Datasheet

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MAX9658

Manufacturer Part Number
MAX9658
Description
The MAX9657 is a small, low-power, quad video amplifier with input sync-tip clamps
Manufacturer
Maxim
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
MAX9658AEE
Manufacturer:
MAXIM/美信
Quantity:
20 000
Part Number:
MAX9658AEE+T
Manufacturer:
LT
Quantity:
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The MAX9657 is a small, low-power, quad video ampli-
fier with input sync-tip clamps. It features a bandwidth
of 15MHz, making it suitable for not only standard-defi-
nition video signals, but also video graphics array
(VGA) signals with a 640 x 480 resolution at up to 85Hz
refresh rate.
The MAX9658 is a quad video amplifier with integrated
lowpass filters and input sync-tip clamps. The lowpass
filters typically have ±1dB passband flatness out to
9.5MHz and 47dB attenuation at 27MHz. Specially suit-
ed for composite video signals, the MAX9658 is ideal
for performing anti-alias filtering at the inputs of a digital
video recorder or for performing reconstruction filtering
at the outputs of a SCART set-top box.
Both devices require that the incoming video signals be
AC-coupled to the inputs. The input sync-tip clamps set
the internal DC level of the video signals.
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 MAX9657/MAX9658 feature a low-power shut-
down mode, in which supply current is reduced to
35µA.
The MAX9657/MAX9658 operate from a single 2.7V to
3.6V supply, are specified over the -40°C to +125°C
automotive temperature range, and are offered in a
small, 16-pin QSOP package.
19-4453; Rev 0; 2/09
Typical Application Circuits and Pin Configuration appear
at end of data sheet.
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.
Set-Top Boxes
Digital Video Recorders
________________________________________________________________ Maxim Integrated Products
Quad Video (Filter) Amplifiers with Input
General Description
Applications
♦ Quad Channel
♦ 9.5MHz, ±1dB Passband (MAX9658)
♦ 47dB Attenuation at 27MHz (MAX9658)
♦ Fixed Gain of 2V/V
♦ Low Power: 21mA
♦ 2.7V to 3.6V Single-Supply Operation
Note: All devices are specified over the -40°C to +125°C oper-
ating temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
MAX9657AEE+
MAX9658AEE+
UNKNOWN
BIAS
PART
Sync-Tip Clamps
*LOWPASS FILTER IN MAX9658 ONLY.
PIN-PACKAGE
16 QSOP
16 QSOP
SHDN
IN0
IN1
IN2
IN3
CLAMPREF
CLAMPREF
CLAMPREF
CLAMPREF
Ordering Information
Functional Diagram
MAX9657/MAX9658
LPF*
LPF*
LPF*
LPF*
GND
STANDARD-DEFINITION
A
A
A
A
V
V
V
V
= 2V/V
= 2V/V
= 2V/V
= 2V/V
VIDEO FILTER
OUT0
OUT1
OUT2
OUT3
300mV
Features
Yes
No
1

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MAX9658 Summary of contents

Page 1

... The MAX9658 is a quad video amplifier with integrated lowpass filters and input sync-tip clamps. The lowpass filters typically have ±1dB passband flatness out to 9 ...

Page 2

... Input Pins......................................................................±20mA 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 ...

Page 3

... P (MAX9657 only) OUT P-P MAX9657 only Settled to within 0.1% of final value (MAX9657 only reference frequency is OUT P-P 100kHz ±1dB passband flatness (MAX9658 only 5.5MHz reference OUT P 9.5MHz frequency is 100kHz f = 10MHz (MAX9658 only 27MHz 5-step modulated staircase of 129mV step size and 286mV peak-to-peak subcarrier DG amplitude ...

Page 4

Quad Video (Filter) Amplifiers with Input Sync-Tip Clamps ELECTRICAL CHARACTERISTICS (continued 3.3V 0V SHDN DD GND +25°C.) (Note 1) A PARAMETER SYMBOL LOGIC SIGNALS (SHDN) Logic-Low Threshold Logic-High Threshold Logic ...

Page 5

Quad Video (Filter) Amplifiers with Input Typical Operating Characteristics (MAX9657) (continued 3.3V SHDN DD GND DD VIDEO PSRR vs. FREQUENCY 3.3V + 100mV DD P-P -10 -20 ...

Page 6

Quad Video (Filter) Amplifiers with Input Sync-Tip Clamps Typical Operating Characteristics (MAX9657) (continued 3.3V SHDN DD GND DD VIDEO SYNC-TIP CLAMP VOLTAGE vs. TEMPERATURE 0.37 0.36 0.35 0.34 0.33 0.32 ...

Page 7

... Quad Video (Filter) Amplifiers with Input Typical Operating Characteristics (MAX9658) (continued 3.3V SHDN DD GND DD SMALL-SIGNAL GAIN vs. FREQUENCY 50mV IN P-P 5 NOTE: GAIN IS NORMALIZED TO 0dB 0 -5 -10 -15 -20 -25 -30 -35 -40 -45 -50 100k 1M 10M 100M FREQUENCY (Hz) LARGE-SIGNAL GAIN FLATNESS vs. FREQUENCY ...

Page 8

... Quad Video (Filter) Amplifiers with Input Sync-Tip Clamps Typical Operating Characteristics (MAX9658) (continued 3.3V SHDN DD GND DD DIFFERENTIAL GAIN AND PHASE 0.1 0 -0.1 -0.2 -0.3 -0.4 -0 0.8 0.6 0.4 0.2 0 -0.2 -0 12.5T RESPONSE 400ns/div FIELD SQUARE WAVE 2ms/div 8 _______________________________________________________________________________________ = 150Ω to GND +25°C 4.43MHz ...

Page 9

... Quad Video (Filter) Amplifiers with Input Typical Operating Characteristics (MAX9658) (continued 3.3V SHDN DD GND DD 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 - 100 125 TEMPERATURE (°C) PIN NAME 1 IN0 Video Input Channel 0 2 IN1 Video Input Channel 1 3 IN2 ...

Page 10

... The sync- tip voltage is internally set to 300mV. In shutdown mode, the inputs to the MAX9657/ MAX9658 do not distort the video signal in case the video source is driving video signals to another video circuit such as a video multiplexer. The inputs in shut- ...

Page 11

... GRAPHICS PROCESSING UNIT OR MPEG DECODER LUMA DAC 75Ω CHROMA DAC 75Ω CVBS DAC 75Ω Figure 1. AC-Coupled Outputs Table 1. Quiescent and Average Power Consumption for MAX9657/MAX9658 MEASUREMENT Quiescent power consumption Average power consumption ______________________________________________________________________________________ MAX9657/ MAX9658 0.1μF IN0 LPF* A CLAMPREF 0.1μF IN1 ...

Page 12

Quad Video (Filter) Amplifiers with Input Sync-Tip Clamps SHDN 0.1μF IN0 75Ω 0.1μF IN1 75Ω CVBS INPUTS 0.1μF IN2 75Ω 0.1μF IN3 75Ω NOTE: FOUR MAX9657s ARE REQUIRED BEFORE THE 16x16 CROSSPOINT. 12 ______________________________________________________________________________________ +3.3V 0.1μ MAX9657 OUT0 ...

Page 13

... CLAMPREF 0.1μF IN1 75Ω CVBS CLAMPREF INPUTS 0.1μF IN2 75Ω CLAMPREF 0.1μF IN3 75Ω CLAMPREF ______________________________________________________________________________________ Sync-Tip Clamps Typical Application Circuits (continued) +3.3V 0.1μ MAX9658 75Ω OUT0 LPF 75Ω 2V/V V 75Ω OUT1 LPF 75Ω 2V/V V 75Ω OUT2 LPF 75Ω 2V/V V 75Ω ...

Page 14

... Quad Video (Filter) Amplifiers with Input Sync-Tip Clamps Pin Configuration + IN0 1 IN1 2 IN2 3 MAX9657 MAX9658 IN3 4 N.C. 5 N.C. 6 N.C. 7 N.C. 8 QSOP 14 ______________________________________________________________________________________ PROCESS: BiCMOS N.C. 14 OUT0 13 OUT1 12 OUT2 11 OUT3 10 SHDN 9 GND Chip Information ...

Page 15

... PACKAGE TYPE 16 QSOP 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 ____________________ 15 © ...

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