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MAX9505ETE+T
DirectDrive Video Amplifier with Reconstruction Filter and Analog Switch
General DescriptionThe MAX9505 filters and amplifies standard-definition
video signals. Maxim’s DirectDrive™ technology elimi-
nates large output-coupling capacitors and sets the
video black level to ground. An internal reconstruction
filter smoothes the steps and reduces the spikes on the
video signal from the video digital-to-analog converter
(DAC). The input of the MAX9505 can be directly con-
nected to the output of a DAC. The MAX9505 provides
a compact, integrated, and low-power solution.
The reconstruction filter typically has 3dB attenuation at
9MHz and 50dB attenuation at 27MHz, and ±1dB pass-
band flatness to 5.5MHz.
Maxim’s DirectDrive uses an integrated charge pump
and a linear regulator to create a negative power supply
to drive the sync below ground. The charge pump injects
so little noise into the video output that the picture is visi-
bly flawless.
The MAX9505 features an internal 1.7Ωanalog switch
that interfaces with a 4-pole multimedia jack. This
switch allows one of the poles to be set as a video
input, a video output, or a microphone input.
The MAX9505 is offered in space-saving 16-pin QSOP
and 16-pin TQFN packages and is specified over the
-40°C to +85°C extended temperature range.
ApplicationsMobile Phones/Smartphones
Space-Constrained, Low-Power Audio/Video
Portable Devices
FeaturesDC-Coupled OutputDirect Connection to Video DACVideo Output Black Level Set to GroundVideo Reconstruction Filter with 50dB
Attenuation at 27MHz6dB Gain1.7ΩRONAnalog Switch10nA Shutdown Supply Current2.7V to 3.6V Single-Supply Operation
MAX9505
DirectDrive Video Amplifier with
Reconstruction Filter and Analog Switch
Ordering Information0 TO 50mV-0.1V TO
+0.1V
MAX9505
AMP
LINEAR
REGULATOR
CHARGE
PUMP
BUFFER
VIDOUTVIDIN6dB
SOUTSIN
LOWPASS
FILTER0V
Block Diagram19-3675; Rev 1; 8/05
PART*PIN-
PACKAGEPKG CODETOP MARKMAX9505EEE16 QSOPE16-4—
MAX9505ETE16 TQFNT1633-4ACW
Functional Diagram/Typical Operating Circuit and Pin
Configurations appear at end of data sheet.*All devices are specified over the -40°C to +85°C operating
temperature range.
MAX9505
DirectDrive Video Amplifier with
Reconstruction Filter and Analog Switch
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(VDD= CPVDD= MODE1 = 3.0V, MODE0 = SGND = GND = CPGND = 0V, C1 = C2 = C3 = C4 = 1µF, RBIAS = 100kΩ, TA= TMINto
TMAX. RL= 150Ωto SGND, unless otherwise noted. VVIDIN= 286mV, gain = 6dB. Typical values are at VDD= CPVDD = MODE1 = 3.0V,= +25°C, unless otherwise noted.) (Note 1)
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.
VDDto SGND............................................................-0.3V to +4V
VIDIN to SGND.........................................................-0.3V to +4V
BIAS to SGND............................................-0.3V to (VDD+ 0.3V)
MODE0, MODE1 to SGND.......................................-0.3V to +4V
SIN, SOUT, VIDOUT to SGND(The greater of VSSand -2V)
to (VDD+ 0.3V)
CPVDDto CPGND....................................................-0.3V to +4V
C1P, C1N, CPVSS.............................Capacitor Connection Only
CPGND, SGND, GND............................................-0.1V to +0.1V
CPVSSto VSS..................................................................-0.1V to +0.1V
VIDOUT Short Circuit to VDD, SGND
and the Greater of (VSSand -2V)...........................Continuous
Continuous Current
VIDIN, BIAS, MODE0, MODE1, SIN, SOUT...................±20mA
Continuous Power Dissipation (TA= +70°C)
16-Pin QSOP (derate 8.3mW/°C above +70°C)...........667mW
16-Pin TQFN (derate 15.6mW/°C above +70°C).......1349mW
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
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSSupply Voltage RangeVDD,
CPVDD
Guaranteed by DC voltage gain and
quiescent supply current2.73.6V
Quiescent Supply CurrentIDDVDD = 3.6V (IDD = IVDD + ICPVDD, RL = ∞)1215mA
Shutdown Supply CurrentISHDNVDD = 3.6V (ISHDN = IVDD + ICPVDD),
SHDN = SGND0.011µA
Bias VoltageVBIAS1V
VIDEO AMPLIFIERGuaranteed by DC voltage gain,
VDD = 2.7V-0.10+1.05Input Voltage RangeVRANGE
Guaranteed by DC voltage gain, VDD = 3V-0.10+1.28
Input CurrentIINVDD = 2.7V-2.5+2.5µA
Input ResistanceRIN1MΩ
DC Voltage Gain (Note 2)AVVDD = 2.7V to 3.6V5.566.5dB
Output Black Level (Note 3)VDD = 2.7V-0.10+0.1V
Guaranteed by DC voltage gain, VDD = 2.7V2.162Output Voltage SwingGuaranteed by DC voltage gain, VDD = 3V2.594VP-P
Output Short-Circuit CurrentISCSinking or sourcing50mA
Output ResistanceROUT0.01Ω
Shutdown Output ImpedanceMODE1 = MODE0 = SGND4kΩ
MODE1 = MODE0 = VDD0.01VIDOUT Leakage Current
MODE1 = SGND and MODE0 = VDD0.01
MAX9505
DirectDrive Video Amplifier with
Reconstruction Filter and Analog Switch
ELECTRICAL CHARACTERISTICS (continued)(VDD= CPVDD= MODE1 = 3.0V, MODE0 = SGND = GND = CPGND = 0V, C1 = C2 = C3 = C4 = 1µF, RBIAS = 100kΩ, TA= TMINto
TMAX. RL= 150Ωto SGND, unless otherwise noted. VVIDIN= 286mV, gain = 6dB. Typical values are at VDD= CPVDD = MODE1 = 3.0V,= +25°C, unless otherwise noted.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
ANALOG SWITCHMODE1 = VDD1.74.4On-ResistanceRONMODE0 = VDD,
ISIN = 10mAMODE1 = SGND1.22.5Ω
MODE1 = VDD0.50.9On-Resistance Flatness (Note 4)MODE0 = VDD,
ISIN = 10mA, VDD = 3VMODE1 = SGND0.30.5Ω
SOUT Off-Leakage Current
(Note 5)
MODE0 = SGND, VDD = 3.6V, VSIN = 0.3V,
3.3V, VSOUT = 3.3V, 0.3V-1+1nA
SIN On-Leakage Current (Note 5)MODE0 = VDD, VDD = 3.6V, VSIN = 0.3V,
3.3V, VSOUT = 3.3V, 0.3V-1+1nA
Turn-On TimeVSIN = 1.5V, RL = 300Ω, CL = 35pF,
Figure 1; VIH = 1.5V, VIL = 0V3560ns
Turn-Off TimeVSIN = 1.5V; RL = 300Ω, CL = 35pF,
Figure 1; VIH = 1.5V, VIL = 0V5080ns
Charge InjectionVGEN = 1.5V, RGEN = 0Ω, CL = 1nF,
Figure 220pC
MODE0 = SGND, f = 10MHz;
VSOUT = 1VP-P, RL = 50Ω, CL = 5pF30
Off-IsolationMODE0 = SGND, f = 1MHz; VSOUT = 1VP-P,
RL = 50Ω, CL = 5pF50
On-Channel -3dB BandwidthMODE0 = VDD, signal = 0dBm, RL = 50Ω,
CL = 5pF200MHz
Total Harmonic DistortionMODE0 = VDD, VSIN = 2VP-P, RL = 600Ω0.025%
SOUT Off-CapacitanceMODE0 = SGND, f = 1MHz18pF
Switch On-CapacitanceMODE0 = VDD, f = 1MHz60pF
CROSSTALK (VIDEO TO AUDIO)VIDIN to SINMODE1 = MODE0 = VDD, f = 20kHz,
1VP-P at VIDIN100dB
VIDOUT to SINMODE1 = VDD, MODE0 = SGND,
f = 20kHz, 2VP-P at VIDOUT85dB
CHARGE PUMPSwitching Frequency150250300kHz
LOGIC SIGNALS (MODE0, MODE1)Logic-Low ThresholdVILVDD = 2.7V to 3.6V0.5V
Logic-High ThresholdVIHVDD = 2.7V to 3.6V1.5V
Logic Input CurrentIIL1µA
MAX9505
DirectDrive Video Amplifier with
Reconstruction Filter and Analog Switch
AC ELECTRICAL CHARACTERISTICS(VDD = CPVDD = MODE1 = 3.0V, MODE0 = SGND = GND = CPGND = 0V, C1 = C2 = C3 = C4 = 1µF, RBIAS= 100kΩ, TA= TMINto
TMAX. RL = 150Ωto SGND, unless otherwise noted. VVIDIN= 286mV, gain = 6dB. Typical values are at VDD= CPVDD = MODE1 = 3.0V, = +25°C, unless otherwise noted.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSPassband FlatnessVDD = 2.7V, f = 100kHz to 5.5MHz-10+1dB
f = 9.1MHz3
Attenuation
VDD = 2.7V,
VIDOUT= 2VP-P, attenuation
is referred to 100kHzf = 27MHz3550
Power-Supply Rejection RatioPSRRf = 100kHz62dB
Output ImpedanceZOUTf = 5MHz0.5Ω
Differential Gain ErrorDGNTSC, VIDOUT = 2VP-P0.1%
Differential Phase ErrorDPNTSC, VIDOUT = 2VP-P0.2degrees
2T Pulse-to-Bar K Rating
2T = 250ns, bar time is 18µs, the beginning
2.5% and the ending 2.5% of the bar time
are ignored
-0.3K%
2T Pulse Response2T = 250ns0.3K%
2T Bar Response
2T = 250ns, bar time is 18µs, the beginning
2.5% and the ending 2.5% of the bar time
are ignored
0.7K%
Nonlinearity5-step staircase0.2%
Group Delay DistortionDDt100kHz to 5.5MHz10ns
VIDOUT Capacitive-Load StabilityCLVOUT = 2VP-P, no sustained oscillations20pF
Peak Signal-to-RMS NoiseSNR100kHz to 5.5MHz64dB
Enable TimetONVIDIN = 0.5V, VIDOUT settled to within 1%
of the final voltage0.2ms
Disable TimetOFFVIDIN = 0.5V, VIDOUT settled to below 1%
of the output voltage0.1ms
Note 1:All devices are 100% production tested at TA= +25°C. Specifications over temperature are guaranteed by design.
Note 2:Voltage gain (AV) is a two-point measurement in which the output voltage swing is divided by the input voltage swing.
Note 3:With an output load attached, this offset will directly contribute to quiescent current.
Note 4:Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the
specified analog signal ranges.
Note 5:Guaranteed by design.
MAX9505
DirectDrive Video Amplifier with
Reconstruction Filter and Analog Switch
Timing DiagramsVDD
VDD
SINSOUT
MODE0
SGND
LOGIC
INPUT
VNOVOUTCL
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
VOUT = VNO (RL / (RL + RON))
MODE0
SWITCH OUTPUT
VIL
0.9 x VOUT
50%
VIH
0.9 x VOUTVOUT
tON
tOFF
tR < 5ns
tF < 5ns
Figure 1. Analog Switch Turn-On/Off Time
VDD
VDD
SINSOUT
SGND
VOUT
MODE0
RGEN
VGEN
VIL TO VIH
∆VOUT
OFFOFF
VOUTQ = (∆VOUT) (CL)
Figure 2. Charge Injection
Typical Operating Characteristics(VDD= CPVDD = MODE1 = 3.0V, MODE0 = SGND = GND = CPGND = 0V, no load, C1 = C2 = C3 = C4 = 1µF, RBIAS = 100kΩ, TA=
TMINto TMAX. RIN = 150Ωto SGND, unless otherwise noted. VVIDIN= 286mV, gain = 6dB. Typical values are at TA= +25°C, unless
otherwise noted.)
SMALL-SIGNAL GAIN vs. FREQUENCYMAX9505 toc01
FREQUENCY (MHz)
GAIN (dB)1
VVIDOUT = 100mVP-P
GAIN = 6dB
SMALL-SIGNAL GAIN FLATNESS
vs. FREQUENCYMAX9505 toc02
FREQUENCY (MHz)
GAIN FLATNESS (dB)
VVIDOUT = 100mVP-P
GAIN = 6dB
LARGE-SIGNAL GAIN vs. FREQUENCYMAX9505 toc03
FREQUENCY (MHz)
GAIN (dB)1
VVIDOUT = 2VP-P
GAIN = 6dB
LARGE-SIGNAL GAIN FLATNESS
vs. FREQUENCYMAX9505 toc04
FREQUENCY (MHz)
GAIN FLATNESS (dB)
VVIDOUT = 2VP-P
GAIN = 6dB
GROUP DELAYMAX9505 toc05
FREQUENCY (MHz)
GROUP DELAY (ns)1
VVIDOUT = 2VP-P
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCYMAX9505 toc06
FREQUENCY (MHz)
PSRR (dB)0.1
QUIESCENT SUPPLY CURRENT
vs. TEMPERATURE (VIDEO MODE)
MAX9505 toc07
TEMPERATURE (°C)
SUPPLY CURRENT (mA)3510-15
MODE0 = SGND, MODE1 = VDD
VOLTAGE GAIN vs. TEMPERATUREMAX9505 toc08
TEMPERATURE (°C)
VOLTAGE GAIN (dB)3510-15
OUTPUT VOLTAGE vs. INPUT VOLTAGE
MAX9505 toc09
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
MAX9505
DirectDrive Video Amplifier with
Reconstruction Filter and Analog Switch
MAX9505
DirectDrive Video Amplifier with
Reconstruction Filter and Analog Switch
Typical Operating Characteristics (continued)(VDD= CPVDD = MODE1 = 3.0V, MODE0 = SGND = GND = CPGND = 0V, no load, C1 = C2 = C3 = C4 = 1µF, RBIAS = 100kΩ, TA=
TMINto TMAX. RIN = 150Ωto SGND, unless otherwise noted. VVIDIN= 286mV, gain = 6dB. Typical values are at TA= +25°C, unless
otherwise noted.)
DIFFERENTIAL GAIN AND PHASEMAX9505 toc10
DIFFERENTIAL GAIN (%)5432
DIFFERENTIAL PHASE (deg)5432
2T RESPONSE
MAX9505 toc11
VIDIN
200mV/div
VIDOUT
400mV/div
100ns/div
12.5T RESPONSEMAX9505 toc12
VIDIN
250mV/div
VIDOUT
500mV/div
400ns/div
OUT RESPONSE
TO NTC-7 VIDEO TEST SIGNALMAX9505 toc13
VIDIN
500mV/div
VIDOUT
1V/div
10μs/div
FIELD SQUARE-WAVE RESPONSEMAX9505 toc14
VIDIN
500mV/div
VIDOUT
1V/div
2ms/div
ON-RESISTANCE vs. VSOUTMAX9505 toc15
VSOUT (V)
ON-RESISTANCE (
MODE0 = MODE1 = VDD
VDD = 2.7V
VDD = 3.0V
VDD = 3.6V
MAX9505
DirectDrive Video Amplifier with
Reconstruction Filter and Analog Switch
Typical Operating Characteristics (continued)(VDD= CPVDD = MODE1 = 3.0V, MODE0 = SGND = GND = CPGND = 0V, no load, C1 = C2 = C3 = C4 = 1µF, RBIAS = 100kΩ, TA=
TMINto TMAX. RIN = 150Ωto SGND, unless otherwise noted. VVIDIN= 286mV, gain = 6dB. Typical values are at TA= +25°C, unless
otherwise noted.)
CHARGE INJECTION vs. VSOUTMAX9505 toc18
VSOUT (V)
CHARGE INJECTION (pC)
CL = 1nF
SUPPLY CURRENT vs. TEMPERATURE
(NORMAL SWITCH MODE)MAX9505 toc19
TEMPERATURE (°C)
SUPPLY CURRENT (nA)3510-15
VDD = 3V
MODE0 = MODE1 = VDD
ON-RESISTANCE vs. VSOUTMAX9505 toc16
VSOUT (V)
ON-RESISTANCE (
MODE0 = MODE1 = VDD
TA = +85°C
TA = +25°CTA = -40°C
SWITCH LEAKAGE CURRENT
vs. TEMPERATUREMAX9505 toc17
TEMPERATURE (°C)
LEAKAGE CURRENT (pA)3510-15
SIN ON-LEAKAGE
SOUT OFF-LEAKAGE
ON-RESPONSE, OFF-ISOLATION,
CROSSTALK vs. FREQUENCYMAX9505 toc20
FREQUENCY (MHz)
LOSS (dB)0.1
ON-RESPONSE
VIDOUT CROSSTALK
VIDIN CROSSTALK
OFF-ISOLATION
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCYMAX9505 toc21
FREQUENCY (kHz)
THD+N (%)10.1
VSIN = 2VP-P
RL = 600Ω
