19-3676; Rev 0; 5/05 DirectDrive Video Amplifier with Reconstruction Filter Features The MAX9503 filters and amplifies standard-definition video signals. Maxim’s DirectDrive™ technology eliminates large output-coupling capacitors and sets the video black level to ground. The input of the MAX9503 can be directly connected to the output of a video digital-to-analog converter (DAC). The MAX9503 provides a compact, integrated, and low-power solution. ♦ DC-Coupled Output An internal reconstruction filter smoothes the steps and reduces the spikes on the video signal from the DAC. The reconstruction filter typically has 3dB attenuation at 9MHz and 50dB attenuation at 27MHz, and ±1dB passband flatness to 5.5MHz. Maxim’s DirectDrive uses an integrated charge pump and a linear regulator to create a clean negative power supply to drive the sync below ground. The charge pump injects so little noise into the video output that the picture is visibly flawless. The MAX9503 is available with +6dB (MAX9503G) and +12dB (MAX9503M) gains. The device operates from a 2.7V to 3.6V single supply and features a 10nA lowpower shutdown mode. ♦ Preset Gain 6dB (MAX9503G) 12dB (MAX9503M) The MAX9503 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. Applications ♦ Direct Connection to Video DAC ♦ Video Output Black Level Set to Ground ♦ Video Reconstruction Filter with 50dB Attenuation at 27MHz ♦ 10nA Shutdown Supply Current ♦ 2.7V to 3.6V Single-Supply Operation Ordering Information PINPACKAGE PART* PKG CODE TOP MARK MAX9503GEEE 16 QSOP E16-4 — MAX9503GETE 16 TQFN T1633-4 ACU MAX9503MEEE 16 QSOP E16-4 — MAX9503METE 16 TQFN T1633-4 ACV *All devices are specified over the -40°C to +85°C operating temperature range. Digital Still Cameras Mobile Phones/Smartphones Functional Diagram/Typical Operating Circuit and Pin Configurations appear at end of data sheet. Security Cameras Portable Media Players Space-Constrained, Low-Power Portable Devices Block Diagram 0 TO 50mV -0.1V TO +0.1V MAX9503 0V BUFFER 0V VIDIN LOWPASS FILTER AMP LINEAR REGULATOR CHARGE PUMP VIDOUT MAX9503G: 6dB MAX9503M: 12dB ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX9503 General Description MAX9503 DirectDrive Video Amplifier with Reconstruction Filter ABSOLUTE MAXIMUM RATINGS VDD to SGND............................................................-0.3V to +4V VIDIN to SGND .........................................................-0.3V to +4V BIAS to SGND ..............................................-0.3V to (VDD + .3V) SHDN to SGND ........................................................-0.3V to +4V VIDOUT to SGND........................(The greater of VSS and -2V) to (VDD + 0.3V) CPVDD to CPGND ....................................................-0.3V to +4V C1P, C1N, CPVSS .............................Capacitor Connection Only CPGND, SGND, GND............................................-0.1V to +0.1V CPVSS to VSS ..................................................................-0.1V to +0.1V VIDOUT Short Circuit to VDD, SGND and the Greater of (VSS and -2V) ...........................Continuous Continuous Current VIDIN, BIAS, SHDN ......................................................±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 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 = CPVDD = SHDN = 3.0V, SGND = GND = CPGND = 0V, C1 = C2 = C3 = C4 = 1µF, RBIAS = 100kΩ, TA = TMIN to TMAX. RL = 150Ω to SGND, unless otherwise noted. VVIDIN = 286mV (MAX9503G), VVIDIN = 143mV (MAX9503M). Typical values are at VDD = CPVDD = SHDN = 3.0V, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER Supply Voltage Range SYMBOL VDD, CPVDD Quiescent Supply Current IDD Shutdown Supply Current ISHDN Bias Voltage VBIAS CONDITIONS Guaranteed by DC voltage gain and quiescent current MIN TYP MAX UNITS 3.6 V 12 15 mA 0.01 1 µA 2.7 VDD = 3.6V (IDD = IVDD + ICPVDD, RL = ∞) VDD = 3.6V (ISHDN = IVDD + ICPVDD), SHDN = SGND 1 V VIDEO AMPLIFIER Input Voltage Range VRANGE Input Current IIN Input Resistance RIN DC Voltage Gain (Note 2) AV Output Black Level (Note 3) Output Short-Circuit Current Output Resistance Shutdown Output Impedance 2 Guaranteed by DC voltage gain, VDD = 2.7V MAX9503G -0.10 +1.05 MAX9503M -0.050 +0.525 Guaranteed by DC voltage gain, VDD = 3V MAX9503G -0.10 +1.28 MAX9503M -0.05 +0.64 -2.5 +2.5 VDD = 2.7V 1 VDD = 2.7V to 3.6V VDD = 2.7V ISC ROUT 5.5 6 6.5 MAX9503M 11.5 12 12.5 MAX9503G -0.1 0 +0.1 MAX9503M -0.15 0 +0.15 50 MAX9503G 0.01 MAX9503M 0.02 ROUTSHDN SHDN = SGND MAX9503G 4.2 MAX9503M 8.2 _______________________________________________________________________________________ µA MΩ MAX9503G Sinking or sourcing V dB V mA Ω kΩ DirectDrive Video Amplifier with Reconstruction Filter (VDD = CPVDD = SHDN = 3.0V, SGND = GND = CPGND = 0V, C1 = C2 = C3 = C4 = 1µF, RBIAS = 100kΩ, TA = TMIN to TMAX. RL = 150Ω to SGND, unless otherwise noted. VVIDIN = 286mV (MAX9503G), VVIDIN = 143mV (MAX9503M). Typical values are at VDD = CPVDD = SHDN = 3.0V, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 150 250 300 kHz 0.5 V 1 µA CHARGE PUMP Switching Frequency LOGIC SIGNALS Logic-Low Threshold VIL VDD = 2.7V to 3.6V Logic-High Threshold VIH VDD = 2.7V to 3.6V Logic Input Current IIL 1.5 V AC ELECTRICAL CHARACTERISTICS (VDD = CPVDD = SHDN = 3.0V, SGND = GND = CPGND = 0V, C1 = C2 = C3 = C4 = 1µF, RBIAS = 100kΩ, TA = TMIN to TMAX. RL = 150Ω to SGND, unless otherwise noted. VVIDIN = 286mV (MAX9503G), VVIDIN = 143mV (MAX9503M). Typical values are at VDD = CPVDD = SHDN = 3.0V, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS Passband Flatness VDD = 2.7V, f = 100kHz to 5.5MHz Attenuation VDD = 2.7V, VIDOUT= 2VP-P, attenuation is referred to 100kHz Power-Supply Rejection Ratio PSRR f = 100kHz Output Impedance ZOUT f = 5MHz Differential Gain Error DG NTSC, VIDOUT = 2VP-P Differential Phase Error DP NTSC, VIDOUT = 2VP-P MIN TYP MAX UNITS -1 0 +1 dB f = 9.1MHz 3 dB f = 27MHz 35 50 MAX9503G 62 MAX9503M 56 MAX9503G 0.5 MAX9503M 0.65 MAX9503G 0.1 MAX9503M 0.1 MAX9503G 0.2 MAX9503M 0.2 dB Ω % degrees 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 -0.3 K% 2T Pulse Response 2T = 250ns 0.3 K% 2T Bar Response 2T = 250ns, bar time is 18µs, the beginning 2.5% and the ending 2.5% of the bar time are ignored 0.7 K% Nonlinearity 5-step staircase 0.2 % Group-Delay Distortion DDt 100kHz to 5.5MHz 10 ns VIDOUT Capacitive-Load Stability CL VOUT = 2VP-P, no sustained oscillations 20 pF _______________________________________________________________________________________ 3 MAX9503 ELECTRICAL CHARACTERISTICS (continued) AC ELECTRICAL CHARACTERISTICS (continued) (VDD = CPVDD = SHDN = 3.0V, SGND = GND = CPGND = 0V, C1 = C2 = C3 = C4 = 1µF, RBIAS = 100kΩ, TA = TMIN to TMAX. RL = 150Ω to SGND, unless otherwise noted. VVIDIN = 286mV (MAX9503G), VVIDIN = 143mV (MAX9503M). Typical values are at VDD = CPVDD = SHDN = 3.0V, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Peak Signal-to-RMS Noise SNR 100kHz to 5.5MHz MAX9503G 64 MAX9503M 58 Enable Time tON VIDIN = 0.5V, VIDOUT settled to within 1% of the final voltage 0.2 ms Disable Time tOFF VIDIN = 0.5V, VIDOUT settled to below 1% of the output voltage 0.1 ms dB 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. Typical Operating Characteristics (VDD = CPVDD = SHDN = 3.0V, SGND = GND = CPGND = 0V, no load, C1 = C2 = C3 = C4 = 1µF, RBIAS = 100kΩ, TA = TMIN to TMAX. RIN = 150Ω to SGND, unless otherwise noted. VVIDIN = 286mV (MAX9503G), VVIDIN = 143mV (MAX9503M). Typical values are at TA = +25°C, unless otherwise noted.) 0 -20 -20 GAIN (dB) -10 -30 -40 -50 -30 -40 -50 -60 -60 VVIDOUT = 100mVP-P GAIN = 6dB -70 1 10 FREQUENCY (MHz) 100 7 6 5 4 -80 0.1 VVIDOUT = 100mVP-P GAIN = 6dB VVIDOUT = 100mVP-P GAIN = 12dB -70 -80 8 GAIN FLATNESS (dB) 0 10 -10 MAX9503G SMALL-SIGNAL GAIN FLATNESS vs. FREQUENCY MAX9503 toc02 10 4 20 MAX9503 toc01 20 MAX9503M SMALL-SIGNAL GAIN vs. FREQUENCY MAX9503 toc03 MAX9503G SMALL-SIGNAL GAIN vs. FREQUENCY GAIN (dB) MAX9503 DirectDrive Video Amplifier with Reconstruction Filter 3 0.1 1 10 FREQUENCY (MHz) 100 0.1 1 FREQUENCY (MHz) _______________________________________________________________________________________ 10 DirectDrive Video Amplifier with Reconstruction Filter (VDD = CPVDD = SHDN = 3.0V, SGND = GND = CPGND = 0V, no load, C1 = C2 = C3 = C4 = 1µF, RBIAS = 100kΩ, TA = TMIN to TMAX. RIN = 150Ω to SGND, unless otherwise noted. VVIDIN = 286mV (MAX9503G), VVIDIN = 143mV (MAX9503M). Typical values are at TA = +25°C, unless otherwise noted.) MAX9503G LARGE-SIGNAL GAIN vs. FREQUENCY 0 11 -10 -20 -20 -30 -40 -80 0.1 1 100 10 0.1 1 FREQUENCY (MHz) FREQUENCY (MHz) 14 VVIDOUT = 2VP-P GAIN = 12dB 13 GAIN FLATNESS (dB) 7 6 5 MAX9503 toc08 VVIDOUT = 2VP-P GAIN = 6dB 100 MAX9503M LARGE-SIGNAL GAIN FLATNESS vs. FREQUENCY MAX9503 toc07 8 10 FREQUENCY (MHz) MAX9503G LARGE-SIGNAL GAIN FLATNESS vs. FREQUENCY 4 12 11 10 3 9 0.1 10 1 0.1 FREQUENCY (MHz) MAX9503G GROUP DELAY MAX9503M GROUP DELAY 150 MAX9503 toc09 150 VVIDOUT = 2VP-P VVIDOUT = 2VP-P 125 GROUP DELAY (ns) 125 10 1 FREQUENCY (Hz) 100 75 50 25 MAX9503 toc10 GAIN FLATNESS (dB) VVIDOUT = 2VP-P GAIN = 12dB -70 -80 10 1 -40 -60 VVIDOUT = 2VP-P GAIN = 6dB -70 0.1 -30 -50 -60 9 0 -10 -50 10 10 GAIN (dB) GAIN (dB) 12 GROUP DELAY (ns) GAIN FLATNESS (dB) 10 13 20 MAX9503 toc05 VVIDOUT = 100mVP-P GAIN = 12dB 14 20 MAX9503 toc04 15 MAX9503M LARGE-SIGNAL GAIN vs. FREQUENCY MAX9503 toc06 MAX9503M SMALL-SIGNAL GAIN FLATNESS vs. FREQUENCY 100 75 50 25 0 0 0.1 1 10 FREQUENCY (MHz) 100 0.1 1 10 100 FREQUENCY (MHz) _______________________________________________________________________________________ 5 MAX9503 Typical Operating Characteristics (continued) Typical Operating Characteristics (continued) (VDD = CPVDD = SHDN = 3.0V, SGND = GND = CPGND = 0V, no load, C1 = C2 = C3 = C4 = 1µF, RBIAS = 100kΩ, TA = TMIN to TMAX. RIN = 150Ω to SGND, unless otherwise noted. VVIDIN = 286mV (MAX9503G), VVIDIN = 143mV (MAX9503M). Typical values are at TA = +25°C, unless otherwise noted.) -20 PSRR (dB) -40 -60 -40 -60 -80 -80 -100 -100 -120 -120 0.01 0.1 10 1 0.1 10 1 -40 -15 10 60 TEMPERATURE (°C) MAX9503G VOLTAGE GAIN vs. TEMPERATURE MAX9503M VOLTAGE GAIN vs. TEMPERATURE MAX9503G OUTPUT VOLTAGE vs. INPUT VOLTAGE 12.2 4 3 OUTPUT VOLTAGE (V) 6.0 12.1 12.0 11.9 11.7 -15 10 35 85 60 2 1 0 11.8 5.8 -1 -40 -15 10 35 60 85 -0.2 0.3 0.8 1.3 1.8 2.3 MAX9503 toc17 3 2 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 1 1 0 -1 -2 0 0.2 0.4 0.6 0.8 1.0 1.2 1 2 2 3 3 4 4 5 5 6 6 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 0.4 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 2.8 MAX9503 toc19 MAX9503M DIFFERENTIAL GAIN AND PHASE DIFFERENTIAL GAIN (%) MAX9503G DIFFERENTIAL GAIN AND PHASE DIFFERENTIAL PHASE (deg) MAX9503M OUTPUT VOLTAGE vs. INPUT VOLTAGE MAX9503 toc18 INPUT VOLTAGE (V) DIFFERENTIAL GAIN (%) TEMPERATURE (°C) DIFFERENTIAL PHASE (deg) TEMPERATURE (°C) 4 85 MAX9503 toc16 MAX9503 toc14 12.3 5.9 1 2 3 4 5 6 1 2 3 4 5 6 INPUT VOLTAGE (V) 6 35 FREQUENCY (MHz) VOLTAGE GAIN (dB) VOLTAGE GAIN (dB) MAX9503G 10 0.01 6.1 -0.2 MAX9503M 12 FREQUENCY (MHz) 6.2 -40 13 11 MAX9503 toc15 PSRR (dB) SUPPLY CURRENT (mA) 0 -20 14 MAX9503 toc12 0 QUIESCENT SUPPLY CURRENT vs. TEMPERATURE 20 MAX9503 toc11 20 MAX9503M POWER-SUPPLY REJECTION RATIO vs. FREQUENCY MAX9503 toc13 MAX9503G POWER-SUPPLY REJECTION RATIO vs. FREQUENCY OUTPUT VOLTAGE (V) MAX9503 DirectDrive Video Amplifier with Reconstruction Filter _______________________________________________________________________________________ DirectDrive Video Amplifier with Reconstruction Filter (VDD = CPVDD = SHDN = 3.0V, SGND = GND = CPGND = 0V, no load, C1 = C2 = C3 = C4 = 1µF, RBIAS = 100kΩ, TA = TMIN to TMAX. RIN = 150Ω to SGND, unless otherwise noted. VVIDIN = 286mV (MAX9503G), VVIDIN = 143mV (MAX9503M). Typical values are at TA = +25°C, unless otherwise noted.) MAX9503G 2T RESPONSE MAX9503M 2T RESPONSE MAX9503 toc20 MAX9503G 12.5T RESPONSE MAX9503 toc21 VIDIN 200mV/div MAX9503 toc22 VIDIN 100mV/div VIDIN 250mV/div 300mV VIDOUT 400mV/div VIDOUT 400mV/div VIDOUT 500mV/div 0V 100ns/div 400ns/div 100ns/div MAX9503G OUT RESPONSE TO NTC-7 VIDEO TEST SIGNAL MAX9503M 12.5T RESPONSE MAX9503 toc23 MAX9503M OUT RESPONSE TO NTC-7 VIDEO TEST SIGNAL MAX9503 toc24 VIDIN 100mV/div MAX9503 toc25 VIDIN 500mV/div VIDIN 250mV/div 0V 0V VIDOUT 1V/div 0V VIDOUT 1V/div 0V 150mV VIDOUT 400mV/div 0V 400ns/div 10µs/div 10µs/div MAX9503G OUT RESPONSE TO BLACKTO-WHITE VIDEO TEST SIGNAL MAX9503M OUT RESPONSE TO BLACKTO-WHITE VIDEO TEST SIGNAL MAX9503 toc26 MAX9503 toc27 VIDIN 500mV/div 0V VIDIN 250mV/div 0V VIDOUT 1V/div 0V 2ms/div VIDOUT 1V/div 0V 2ms/div _______________________________________________________________________________________ 7 MAX9503 Typical Operating Characteristics (continued) DirectDrive Video Amplifier with Reconstruction Filter MAX9503 Pin Description PIN NAME FUNCTION QSOP TQFN 1 15 VSS 2 16 CPVSS 3 1 C1N 4 2 CPGND 5 3 C1P 6 4 CPVDD 7 5 BIAS 8 6 SGND Signal Ground. Connect to GND. Video Input Negative Power Supply. Connect to CPVSS. Charge-Pump Negative Power Supply. Bypass with a 1µF capacitor to CPGND. Charge-Pump Flying Capacitor Negative Terminal. Connect a 1µF capacitor from C1P to C1N. Charge-Pump Power Ground Charge-Pump Flying Capacitor Positive Terminal. Connect a 1µF capacitor from C1P to C1N. Charge-Pump Positive Power Supply. Bypass with a 1µF capacitor to CPGND. Common-Mode Voltage. Connect a 100kΩ resistor from BIAS to SGND. 9 7 VIDIN 10, 14, 15 8, 12, 14 N.C. No Connection. Not internally connected. Connect to SGND. 11 9 SHDN Active-Low Shutdown. Connect to VDD for normal operation. 12 10 GND Ground. Connect to SGND. 13 11 VDD Positive Power Supply. Bypass with a 1µF capacitor to SGND. 16 13 VIDOUT — EP EP Video Output Exposed Paddle. Connect to GND. Detailed Description The MAX9503 completely eliminates the need for capacitors in the video output by using Maxim’s DirectDrive technology that includes an inverting charge pump and linear regulator. The charge pump and linear regulator create a clean negative supply allowing the amplifier output to swing below ground. The amplifier output can swing both positive and negative so that the video signal black level can be placed at ground. The MAX9503 features a six-pole, Butterworth filter to perform reconstruction filtering on the video input signal from the DAC. DirectDrive Background Integrated video filter/amplifier circuits operating from a single, positive supply usually create video output signals that are level-shifted above ground to keep the signal within the linear range of the output amplifier. For applications in which the positive DC level shift of the video signal is not acceptable, a series capacitor can be inserted in the 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 varies 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. 8 The series capacitor creates a highpass filter. Since the lowest frequency in video is the frame rate, which can be between 24Hz and 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 space-constrained equipment, the series capacitor is unacceptable. Changing from a single series capacitor to a SAG network that requires two smaller capacitors can only reduce 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 connection of the MAX9503 does not have a series capacitor, the MAX9503 will not be damaged if the connector is shorted to a supply or to ground (see the Short-Circuit Protection section). Video Amplifier Typically, the black level of the video signal created by the video DAC is around 300mV. The MAX9503 shifts the black level to ground at the output so that the active video is above ground, and 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. _______________________________________________________________________________________ DirectDrive Video Amplifier with Reconstruction Filter MAX9503 INPUT 500mV/div INPUT 500mV/div 0V OUTPUT 500mV/div 2ms/div Figure 1. AC-Coupled Output The MAX9503 has an integrated charge pump and linear regulator to create a low-noise negative supply from the positive supply voltage. The charge pump inverts the positive supply to create a raw negative voltage that is then fed into the linear regulator, which outputs -2V. The linear regulator filters out the charge-pump noise. Comparison Between DirectDrive Output vs. AC-Coupled Output The actual level of the video signal varies less with a DirectDrive output than an AC-coupled output. The video signal average can change greatly depending upon the picture content. With an AC-coupled output, the average will change according to the time constant formed by the series capacitor and series resistance (usually 150Ω). For example, Figure 1 shows an ACcoupled video signal alternating between a completely black screen and a completely white screen. Notice the excursion of the video signal as the screen changes. With the DirectDrive amplifier, the black level is held at ground. The video signal is constrained between -0.3V to +0.7V. Figure 2 shows the video signal from a DirectDrive amplifier with the same input signal as the AC-coupled system. 0V OUTPUT 1V/div 2ms/div Figure 2. DirectDrive Output Video Reconstruction Filter Before the video signal from the DAC can be amplified, it must be lowpass filtered to smooth the steps and to reduce the spikes created whenever the DAC output changes value. In the frequency domain, the steps and spikes cause images of the video signal to appear at multiples of the sampling clock. The MAX9503 contains a six-pole Butterworth lowpass filter. The passband extends to 5.5MHz, and the minimum attenuation is 35dB at 27MHz. Short-Circuit Protection The MAX9503 typical application circuit includes a 75Ω back-termination resistor that limits short-circuit current if an external short is applied to the video output. The MAX9503 features internal output, short-circuit protection to prevent device damage in prototyping and applications where the amplifier output can be directly shorted. Shutdown The MAX9503 features a low-power shutdown mode for battery-powered/portable applications. Shutdown reduces the quiescent current to less than 10nA. Connecting SHDN to ground (SGND) disables the outputs and places the MAX9503 into a low-power shutdown mode. In shutdown mode, the amplifier, charge pump, and linear regulator are turned off and the video output impedance is 4kΩ. _______________________________________________________________________________________ 9 Applications Information Power-Supply Bypassing and Ground Management The MAX9503 operates from a 2.7V to 3.6V single supply and requires proper layout and bypassing. For the best performance, place the components as close to the device as possible. Proper grounding improves performance and prevents any switching noise from coupling into the video signal. Connect GND and SGND together at a single point on the PC board. Route all traces that carry switching tran- sients away from SGND. Return SGND to the lowest impedance ground available. Route CPGND and all traces carrying switching transients away from SGND, GND, and other traces and components in the video signal path. Bypass the analog supply (VDD) with a 1µF capacitor to SGND, placed as close to the device as possible. Bypass the charge-pump supply (CPV DD) with a 1µF capacitor to CPGND, placed as close to the device as possible. Connect CPVSS to VSS and bypass with a 1µF capacitor to CPGND as close to the device as possible. VIDOUT VDD GND SHDN TOP VIEW N.C. Pin Configurations 12 11 10 9 13 VSS 1 8 N.C. 16 VIDOUT CPVSS 2 15 N.C. C1N 3 N.C. 14 7 VIDIN MAX9503 VSS 15 6 SGND CPVSS 16 5 BIAS 14 N.C. MAX9503 CPGND 4 13 VDD C1P 5 12 GND CPVDD 6 4 CPVDD 3 C1P 2 CPGND 1 C1N MAX9503 DirectDrive Video Amplifier with Reconstruction Filter 11 SHDN BIAS 7 10 N.C. SGND 8 9 VIDIN QSOP 3mm x 3mm TQFN 10 ______________________________________________________________________________________ DirectDrive Video Amplifier with Reconstruction Filter BIAS 1V 100kΩ MAX9503G (MAX9503M) VDD SHDN VDD SHUTDOWN CIRCUIT 6dB (12dB) VIDEO ASIC BUFFER VIDIN DAC SGND 1µF RECONSTRUCTION FILTER AMP GND 75Ω 75Ω DC LEVEL SHIFT VDD VIDOUT LINEAR REGULATOR CPVDD CHARGE PUMP C3 1µF CPGND C1P C1N CPVSS VSS C1 1µF C2 1µF Chip Information PROCESS: BICMOS ______________________________________________________________________________________ 11 MAX9503 Functional Diagram/Typical Operating Circuit Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) QSOP.EPS MAX9503 DirectDrive Video Amplifier with Reconstruction Filter PACKAGE OUTLINE, QSOP .150", .025" LEAD PITCH 21-0055 12 ______________________________________________________________________________________ E 1 1 DirectDrive Video Amplifier with Reconstruction Filter 12x16L QFN THIN.EPS D2 0.10 M C A B b D D2/2 D/2 E/2 E2/2 CL (NE - 1) X e E E2 L k e CL (ND - 1) X e CL 0.10 C CL 0.08 C A A2 L A1 L e e PACKAGE OUTLINE 12, 16L, THIN QFN, 3x3x0.8mm E 21-0136 PKG 12L 3x3 MIN. NOM. MAX. MIN. NOM. MAX. A 0.70 0.75 0.80 0.70 0.75 0.80 EXPOSED PAD VARIATIONS PKG. CODES MIN. NOM. MAX. 1.25 0.95 1.10 1.25 0.35 x 45∞ WEED-1 NO T1233-3 0.95 1.10 1.25 0.95 1.10 1.25 0.35 x 45∞ WEED-1 YES T1633-1 0.95 1.10 1.25 0.95 1.10 1.25 0.35 x 45∞ WEED-2 NO T1633-2 0.95 1.10 1.25 0.95 1.10 1.25 0.35 x 45∞ WEED-2 YES T1633F-3 0.65 0.80 0.95 0.65 0.80 0.95 0.225 x 45∞ WEED-2 N/A T1633-4 0.95 1.10 1.25 0.95 1.10 1.25 0.35 x 45∞ NO 0.20 0.25 0.30 3.10 2.90 3.00 3.10 T1233-1 E e 2.90 3.00 3.10 2.90 3.00 3.10 L 0.45 0.30 0.40 N 12 ND 3 4 NE 3 4 16 0 0.02 0.05 0 0.02 0.05 0.25 0.20 REF - - 0.25 0.20 REF - - A2 k 0.50 DOWN BONDS ALLOWED MAX. 1.10 0.30 0.65 JEDEC NOM. 0.25 3.00 0.50 BSC. PIN ID MIN. 0.20 2.90 0.50 BSC. E2 D2 0.95 b D A1 2 16L 3x3 REF. 0.55 1 WEED-2 NOTES: 1. DIMENSIONING & TOLERANCING CONFORM TO ASME Y14.5M-1994. 2. ALL DIMENSIONS ARE IN MILLIMETERS. ANGLES ARE IN DEGREES. 3. N IS THE TOTAL NUMBER OF TERMINALS. 4. THE TERMINAL #1 IDENTIFIER AND TERMINAL NUMBERING CONVENTION SHALL CONFORM TO JESD 95-1 SPP-012. DETAILS OF TERMINAL #1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED WITHIN THE ZONE INDICATED. THE TERMINAL #1 IDENTIFIER MAY BE EITHER A MOLD OR MARKED FEATURE. 5. DIMENSION b APPLIES TO METALLIZED TERMINAL AND IS MEASURED BETWEEN 0.20 mm AND 0.25 mm FROM TERMINAL TIP. 6. ND AND NE REFER TO THE NUMBER OF TERMINALS ON EACH D AND E SIDE RESPECTIVELY. 7. DEPOPULATION IS POSSIBLE IN A SYMMETRICAL FASHION. 8. COPLANARITY APPLIES TO THE EXPOSED HEAT SINK SLUG AS WELL AS THE TERMINALS. 9. DRAWING CONFORMS TO JEDEC MO220 REVISION C. PACKAGE OUTLINE 12, 16L, THIN QFN, 3x3x0.8mm 21-0136 E 2 2 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 ____________________ 13 © 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc. MAX9503 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.)