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MAX9516ALB+T
1.8V, Ultra-Low-Power, DirectDrive Video Filter Amplifier with Load Detect
General DescriptionOperating at 1.8V from a single power supply, the
MAX9516 amplifies standard-definition video signals and
only consumes 6mW quiescent power and 12mW average
power. The MAX9516 leverages Maxim’s DirectDrive™
technology. Combining DirectDrive® with the external pos-
itive 1.8V supply, the MAX9516 is able to drive a 2VP-P video signal into a 150Ω load. The MAX9516 has the abil-
ity to detect and report the presence of a video load and
reduce power consumption when the load is not present.
The MAX9516 can detect the presence of a video load
and report a change in load through the LOAD flag. This
feature helps reduce overall system power consumption
because the video encoder and the MAX9516 only need
to be turned on when a video load is connected. If no load
is connected, the MAX9516 is placed in an active-detect mode and only consumes 31μW.
Maxim’s DirectDrive technology eliminates large output-
coupling capacitors and sets the output video black level
near ground. DirectDrive requires an integrated charge
pump and an internal linear regulator to create a clean
negative power supply so that the amplifier can pull the
sync below ground. The charge pump injects so little noise
into the video output that the picture is visibly flawless.
The MAX9516 features an internal reconstruction filter that
smoothes the steps and reduces the spikes on the video
signal from the video digital-to-analog converter (DAC).
The reconstruction filter typically has ±1dB passband flat-
ness of 7.5MHz, and 46dB (typ) attenuation at 27MHz.
The input of the MAX9516 can be directly connected to
the output of a video DAC. The MAX9516 also features a
transparent input sync-tip clamp, allowing AC-coupling of
input signals with different DC biases.
The MAX9516 has an internal fixed gain of 8. The input
full-scale video signal is nominally 0.25VP-P, and the out-
put full-scale video signal is nominally 2VP-P.
Applications●Digital Still Cameras (DSC)●Digital Video Cameras (DVC)●Mobile Phones●Portable Media Players (PMP)●Security/CCTV Cameras
Features●1.8V or 2.5V Single-Supply Operation●Low Power Consumption (6mW Quiescent,
12mW Average)●Video Load Detect●Reconstruction Filter with 5.5MHz Passband●DirectDrive Sets Video Output Black Level Near
Ground●DC-Coupled Input/Output●Transparent Input Sync-Tip Clamp
Pin Configuration appears at end of data sheet.DirectDrive is a registered trademark of Maxim Integrated
Products, Inc.
Note: This device operates over the -40°C to +125°C operating temperature range.
+Denotes lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
PARTPIN-PACKAGE PKG CODETOP
MARKMAX9516ALB+T10 FDFN-10L1022+1AAN
2VP-P VIDEO
MAX9516AV =
8V/V
LINEAR
REGULATOR
CHARGE
PUMP
LOAD
SENSE
TRANSPARENT
CLAMP
OUT
LOAD
SHDN
250mVP-P
VIDEO
LPF
SHUTDOWN
CIRCUIT
MAX95161.8V, Ultra-Low-Power, DirectDrive
Video Filter Amplifier with Load Detect
Block Diagram
Ordering Information
EVALUATION KIT AVAILABLE
(Voltages with respect to GND.)
VDD ..........................................................................-0.3V to +3V
CPGND .................................................................-0.1V to +0.1V
IN ..............................................................-0.3V to (VDD + 0.3V)
OUT ....................(The greater of VSS and -1V) to (VDD + 0.3V)
SHDN ......................................................................-0.3V to +4V
C1P ...........................................................-0.3V to (VDD + 0.3V)
C1N ...........................................................(VSS - 0.3V) to +0.3V
VSS .........................................................................-3V to +0.3V
Duration of OUT Short Circuit to VDD,GND, and VSS .......................................................Continuous
Continuous Current
IN, SHDN, LOAD ..........................................................±20mA
Continuous Power Dissipation (TA = +70°C) 10-Pin μDFN (derate 5mW/°C above +70°C) .............403mW
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
(VDD = SHDN = +1.8V, GND = 0V, OUT has RL = 150Ω connected to GND, C1 = C2 = 1μF, TA = TMIN to TMAX, unless otherwise noted.
Typical values are at VDD = 1.8V, TA = +25°C.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSSupply Voltage RangeVDDGuaranteed by PSRR1.7002.625V
Supply CurrentIDDAmpliier ON, SHDN
= VDD
Full operation mode,
VIN = 0mV (Note 2)3.15.3mA
Active-detect mode,
no load3µA
Shutdown Supply CurrentISHDNSHDN = GND0.0110µA
Output Load Detect ThresholdRL to GND200Ω
Output LevelIN = 80mV-85+9+85mV
DC-COUPLED INPUT Input Voltage RangeGuaranteed by
output-voltage swing
1.7V ≤ VDD ≤ 2.625V0262.52.375V ≤ VDD ≤ 2.625V0325
Input CurrentIBIN = 130mV23.5µA
Input ResistanceRIN10mV ≤ IN ≤ 250mV295kΩ
AC-COUPLED INPUT Sync-Tip Clamp LevelVCLPCIN = 0.1µF-80+11mV
Input-Voltage SwingGuaranteed by
output-voltage swing
1.7V ≤ VDD ≤ 2.625V252.5
mVP-P2.375V ≤ VDD ≤ 2.625V325
Sync CrushPercentage reduction in sync pulse at output,
RSOURCE = 37.5Ω, CIN = 0.1µF1.3%
Input Clamping CurrentIN = 130mV23.5µA
Line Time DistortionCIN = 0.1µF0.2%
Minimum Input Source
Resistance25Ω
MAX95161.8V, Ultra-Low-Power, DirectDrive Video Filter Ampliier with Load Detect
Absolute Maximum RatingsStresses 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 = SHDN = +1.8V, GND = 0V, OUT has RL = 150Ω connected to GND, C1 = C2 = 1μF, TA = TMIN to TMAX, unless otherwise noted.
Typical values are at VDD = 1.8V, TA = +25°C.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
DC CHARACTERISTICSDC Voltage Gain AVGuaranteed by output-voltage swing
(Note 3)7.8488.16V/V
Output-Voltage Swing
1.7V ≤ VDD ≤ 2.625V
0 ≤ VIN ≤ 262.5mV,
DC-coupled input2.0582.12.142
VP-P0 ≤ VIN ≤ 252.5mVP-P,
AC-coupled input1.9792.022.061
2.375V ≤ VDD ≤
2.625V0 ≤ VIN ≤ 325mV2.5482.62.652
Power-Supply Rejection Ratio1.7V P VDD ≤ 2.625V, measured between 75Ω
load resistors4858dB
Shutdown Input Resistance0V ≤ IN ≤ VDD, SHDN = GND2.5MΩ
Output ResistanceROUTOUT = 0V, -5mA ≤ ILOAD ≤ +5mA0.02Ω
Shutdown Output Resistance0V ≤ OUT ≤ VDD, SHDN = GND10.0MΩ
OUT Leakage CurrentSHDN = GND1µA
Output Short-Circuit Current
Sourcing81Sinking45
AC CHARACTERISTICSStandard-Deinition
Reconstruction Filter
OUT = 2VP-P,
reference frequency
is 100kHz
±1dB passband latness7.5MHz
f = 5.5MHz-0.2f = 8.5MHz-3.0
f = 27MHz-48.7
Differential GainDG
f = 3.58MHz1.05f = 4.43MHz1.1
Differential PhaseDP
f = 3.58MHz0.4
Degreesf = 4.43MHz0.45
Group-Delay Distortion100kHz ≤ f ≤ 5MHz, OUT = 2VP-P16ns
Peak Signal to RMS Noise100kHz ≤ f ≤ 5MHz64dB
Power-Supply Rejection RatioPSRRf = 100kHz, VRIPPLE = 100mVP-P54dB
2T Pulse-to-Bar K Rating
2T = 200ns, bar time is 18µs, the beginning
2.5% and the ending 2.5% of the bar time is
ignored
0.1K%
2T Pulse Response2T = 200ns0.3K%
2T Bar Response
2T = 200ns, bar time is 18µs, the beginning
2.5% and the ending 2.5% of the bar time is
ignored
0.1K%
MAX95161.8V, Ultra-Low-Power, DirectDrive Video Filter Ampliier with Load Detect
Electrical Characteristics (continued)
(VDD = SHDN = +1.8V, GND = 0V, OUT has RL = 150Ω connected to GND, C1 = C2 = 1μF, TA = TMIN to TMAX, unless otherwise noted.
Typical values are at VDD = 1.8V, TA = +25°C.) (Note 1)
Note 1: All devices are 100% production tested at TA = +25°C. Specifications over temperature limits are guaranteed by design.
Note 2: Supply current does not include current supplied to VOUT load.
Note 3: Voltage gain (AV) is a two-point measurement in which the output-voltage swing is divided by the input-voltage swing.
(VDD = SHDN = 1.8V, GND = 0V, video output has RL = 150Ω connected to GND, TA = +25°C, unless otherwise noted.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSNonlinearity5-step staircase0.2%
Output Impedancef = 5MHz, IN = 80mV7.5Ω
VOUT-to-VIN IsolationSHDN = GND, f ≤ 5.5MHz-78dB
VIN-to-VOUT IsolationSHDN = GND, f ≤ 5.5MHz-79dB
CHARGE PUMPSwitching Frequency3256251150kHz
LOGIC SIGNALSLogic-Low ThresholdVILSHDN, VDD = 1.7V to 2.625V0.5V
Logic-High ThresholdVIHSHDN, VDD = 1.7V to 2.625V1.4V
Logic Input CurrentIIL, IIHSHDN10µA
Output High VoltageVOHLOAD, IOH = 3mAVDD - 0.4V
Output Low VoltageVOLLOAD, IOL = 3mA0.4V
SMALL-SIGNAL GAIN FLATNESS
vs. FREQUENCYMAX9516 toc02
FREQUENCY (MHz)
GAIN (dB)1
VOUT = 100mVP-P
LARGE-SIGNAL GAIN
vs. FREQUENCYMAX9516 toc03
FREQUENCY (MHz)
GAIN (dB)1
VOUT = 2VP-P
SMALL-SIGNAL GAIN
vs. FREQUENCYMAX9516 toc01
FREQUENCY (MHz)
GAIN (dB)1
VOUT = 100mVP-P
MAX95161.8V, Ultra-Low-Power, DirectDrive Video Filter Ampliier with Load Detect
Electrical Characteristics (continued)
Typical Operating Characteristics
(VDD = SHDN = 1.8V, GND = 0V, video output has RL = 150Ω connected to GND, TA = +25°C, unless otherwise noted.)
LARGE-SIGNAL GAIN FLATNESS
vs. FREQUENCYMAX9516 toc04
FREQUENCY (MHz)
GAIN (dB)1
VOUT = 2VP-P
GROUP DELAY
vs. FREQUENCYMAX9516 toc05
FREQUENCY (MHz)
DELAY (ns)1
VOUT = 2VP-P
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCYMAX9516 toc06
FREQUENCY (MHz)
PSSR (dB)1
VRIPPLE = 100mVP-P
QUIESCENT SUPPLY CURRENT
vs. TEMPERATUREMAX9516 toc07
TEMPERATURE (°C)
QUIESCENT SUPPLY CURRENT (mA)
VOLTAGE GAIN
vs. TEMPERATURE
MAX9516 toc08
TEMPERATURE (°C)
VOLTAGE GAIN (V/V)
OUTPUT VOLTAGE
vs. INPUT VOLTAGE
MAX9516 toc09
INPUT VOLTAGE (mV)
OUTPUT VOLTAGE (V)
MAX95161.8V, Ultra-Low-Power, DirectDrive Video Filter Ampliier with Load Detect
Typical Operating Characteristics (continued)
(VDD = SHDN = 1.8V, GND = 0V, video output has RL = 150Ω connected to GND, TA = +25°C, unless otherwise noted.)
DIFFERENTIAL GAIN AND PHASEMAX9516 toc10
DIFFERENTIAL
GAIN (%)
DIFFERENTIAL
PHASE (deg)
2T RESPONSE
MAX9516 toc11
100ns/div
50mV/div
OUT
400mV/div
12.5T RESPONSEMAX9516 toc12
400ns/div
50mV/div
400mV/div
OUT
NTC-7 VIDEO TEST SIGNALMAX9516 toc13
10µs/div
100mV/div
800mV/div
OUT
FIELD SQUARE-WAVE (AC-COUPLED)MAX9516 toc14
2ms/div
100mV/div
800mV/div
OUT
MAX95161.8V, Ultra-Low-Power, DirectDrive Video Filter Ampliier with Load Detect
Typical Operating Characteristics (continued)
Detailed DescriptionThe MAX9516 represents Maxim’s second-generation of
DirectDrive video amplifiers, which meet the requirements
of current and future portable equipment:●1.8V operation. Engineers want to eliminate the 3.3V
supply in favor of lower supply voltages.●Lower power consumption. The MAX9516 reduces
average power consumption by up to 75% com-
pared to the 3.3V first-generation devices (MAX9503/
MAX9505).●Internal fixed gain of 8. As the supply voltages drop for
system chips on deep submicron processes, the video
DAC can no longer create a 1VP-P signal at its output,
and the gain of 2 found in the previous generation of
video filter amps is not enough.●Active-detect mode reduces power consumption.
DirectDrive technology is necessary for a voltage-mode
amplifier to output a 2VP-P video signal from a 1.8V sup-
ply. The integrated inverting charge pump creates a nega-
tive supply that increases the output range and gives the
video amplifier enough headroom to drive a 2VP-P video signal with a 150Ω load.
DirectDrive
BackgroundIntegrated video filter amplifier circuits operate from a
single supply. The positive power supply usually creates
video output signals that are level-shifted above ground
to keep the signal within the linear range of the output
amplifier. For applications where the positive DC level is
output connection in an attempt to eliminate the positive
DC level shift. The series capacitor cannot truly level-shift
a video signal because the average level of the video var-
ies with picture content. The series capacitor biases the
video output signal around ground, but the actual level of
the video signal can vary significantly depending upon the
RC time constant and the picture content.
The series capacitor creates a highpass filter. Since the
lowest frequency in video is the frame rate, which can be
from 24Hz to 30Hz, the pole of the highpass filter should
ideally be an order of magnitude lower in frequency than
the frame rate. Therefore, the series capacitor must be very large, typically from 220μF to 3000μF. For spac
constrained equipment, the series capacitor is unaccept-
able. Changing from a single-series capacitor to a SAG
network that requires two smaller capacitors only reduces
space and cost slightly.
The series capacitor in the usual output connection also
prevents damage to the output amplifier if the connector is
shorted to a supply or to ground. While the output connec-
tion of the MAX9516 does not have a series capacitor, the
MAX9516 will not be damaged if the connector is shorted to a
supply or to ground (see the Short-Circuit Protection section).
Video AmpliierIf the full-scale video signal from a video DAC is 250mV,
the black level of the video signal created by the video
DAC is approximately 75mV. The MAX9516 shifts the
black level to near ground at the output so that the active
video is above ground and the sync is below ground. The
amplifier needs a negative supply for its output stage to
remain in its linear region when driving sync below ground.
PINNAMEFUNCTIONVSSCharge-Pump Negative Power Supply. Bypass with a 1µF capacitor to GND.C1NCharge-Pump Flying Capacitor Negative Terminal. Connect a 1µF capacitor from C1P to C1N.CPGNDCharge-Pump GroundC1PCharge-Pump Flying Capacitor Positive Terminal. Connect a 1µF capacitor from C1P to C1N.VDDPositive Power Supply. Bypass with a 0.1µF capacitor to GND.LOADLoad-Detect Output. LOAD goes high when an output video load is detected.GNDGroundINVideo InputSHDNActive-Low Shutdown. Connect to VDD for normal operation.OUTVideo Output
MAX95161.8V, Ultra-Low-Power, DirectDrive Video Filter Ampliier with Load Detect
Pin Description
