Document
19-1028; Rev 0; 11/07
KIT ATION EVALU E L B A AVAIL
1.8V DirectDrive Video Filter Amplifier with Load Detection and Dual SPST Analog Switches
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General Description
Features
o 1.8V or 2.5V Single-Supply Operation o Low Power Consumption (5.8mW Quiescent, 11.7mW Average) o Video Load Detection o DirectDrive Sets Video Output Black Level Near Ground o o o Dual SPST Analog Switches Transparent Input Sync-Tip Clamp I2C Control
MAX9507
The MAX9507 amplifies and filters standard-definition video signals and only consumes 5.8mW quiescent power and 11.7mW average power. The MAX9507 leverages Maxim’s DirectDrive™ technology to generate a clean, internal negative supply. Combining the internal negative power supply with the external positive 1.8V supply, the MAX9507 is able to drive a 2VP-P video signal into a 150Ω load. The MAX9507 provides an I2C interface for easy configuration and access to the load status. The MAX9507 can detect, report, and act upon the change of a video load. This feature helps reduce overall power consumption by allowing the system to turn on the video encoder and driver only when a video load is connected to the MAX9507. With a high power-supply rejection ratio (47dB at 100kHz), the MAX9507 can be powered directly from a 1.8V digital supply. The two integrated single-pole/single-throw (SPST) analog switches are ideal for routing audio, video, or digital signals. The input of the MAX9507 can be directly connected to the output of a video DAC. The MAX9507 also features a transparent input sync-tip clamp, allowing AC-coupling of input signals with different DC biases. The MAX9507 has an internal fixed gain of 8. The input full-scale video signal is nominally 0.25VP-P, and the output full-scale video signal is nominally 2VP-P.
Applications
Mobile Phones Portable Media Players (PMP)
Ordering Information
PART MAX9507ATE+ PIN-PACKAGE 16 TQFN-EP* PKG CODE T1633+4 TOP MARK AFH
Note: This device is specified over the -40°C to +125°C operating temperature range. +Denotes lead-free package. *EP = Exposed pad. Pin Configuration appears at end of data sheet.
Block Diagram
MAX9507
IN LPF 250mVP-P VIDEO TRANSPARENT CLAMP LCF I2C
LOAD DETECT
AV = 8V/V
OUT
2VP-P VIDEO LINEAR REGULATOR 0V CHARGE PUMP COM1 COM2
NO1 NO2
________________________________________________________________ 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.
1.8V DirectDrive Video Filter Amplifier with Load Detection and Dual SPST Analog Switches MAX9507
ABSOLUTE www.datasheet4u.com MAXIMUM RATINGS
Duration of OUT Short Circuit to VDD, GND, and VSS.............................................Continuous Continuous Current IN, SDA, SCL, DEV_ADDR, LCF ....................................±20mA NO_, COM_ .................................................................±100mA Continuous Power Dissipation (TA = +70°C) 16-Pin TQFN (derate 15.6mW/°C above +70°C) ........1250mW Operating Temperature Range .........................-40°C to +125°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C (Voltages with respect to GND.) VDD ...........................................................................-0.3V to +3V CPGND..................................................................-0.1V to +0.1V IN ................................................................-0.3V to (VDD + 0.3V) OUT, NO_, COM_ .................(The greater of VSS and -1V) to (VDD + 0.3V) SDA, SCL, DEV_ADDR, LCF ....................................-0.3V to +4V C1P.............................................................-0.3V to (VDD + 0.3V) C1N .............................................................(VSS - 0.3V) to +0.3V VSS............................................................................-3V to +0.3V
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.
ELECTRICAL CHARACTERISTICS
(VDD = +1.8V, GND = 0V, OUT has RL = 150Ω connected to GND, transparent sync-tip clamp enabled, C1 = C2 = 1µF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER Supply Voltage Range Supply Current Sleep-Mode Supply Current Shutdown Supply Current Switch-Only Supply Current Output Load Detect Threshold DC-COUPLED INPUT Input Voltage Range Input Current Input Resistance Output Level AC-COUPLED INPUT Sync-Tip Clamp Level Input-Voltage Swing VCLP CIN = 0.1µF Guaranteed by.