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19-2813; Rev 3; 9/05
3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current
General Description
The MAX4090 3V/5V, 6dB video buffer with sync-tip clamp, and low-power shutdown mode is available in tiny SOT23, SC70, and DFN packages. The MAX4090 is designed to drive DC-coupled, 150 back-terminated video loads in portable video applications such as digital still cams, portable DVD players, digital camcorders, PDAs, video-enabled cell phones, portable game systems, and notebook computers. The input clamp positions the video waveform at the output and allows the MAX4090 to be used as a DC-coupled output driver. The MAX4090 operates from a single 2.7V to 5.5V supply and consumes only 6.5mA of supply current. The low-power shutdown mode reduces the supply current to 150nA, making the MAX4090 ideal for low-voltage, battery-powered video applications. The MAX4090 is available in tiny 6-pin SOT23, SC70, and DFN packages and is specified over the extended (-40C to +85C) and automotive (-40C to +125C) temperature ranges. Input Sync-Tip Clamp DC-Coupled Output Low-Power Shutdown Mode Reduces Supply Current to 150nA Available in Space-Saving SOT23, SC70 and DFN Packages
Features
Single-Supply Operation from 2.7V to 5.5V
MAX4090
Ordering Information
PART MAX4090EXT-T MAX4090EUT-T MAX4090ELT-T* MAX4090AAXT-T MAX4090AAUT-T MAX4090AALT-T* TEMP RANGE -40C to +85C -40C to +85C -40C to +85C PINPACKAGE 6 SC70-6 6 SOT23-6 6 DFN-6 TOP MARK ABM ABOX AAI ACW ABWQ AAN
Applications
Portable Video/Game Systems/DVD Players Digital Camcorders/Televisions/Still Cameras PDAs Video-Enabled Cell Phones Notebook Computers Portable/Flat-Panel Displays
-40C to +125C 6 SC70-6 -40C to +125C 6 SOT23-6 -40C to +125C 6 DFN-6
*Future product--contact factory for availability.
Pin Configurations
TOP VIEW
VCC
Block Diagram
FB OUT 1 6 FB 6
SHDN 5
OUT 4
MAX4090
IN OUT CLAMP 2.3k FB 580 780 1.2k
GND 2
MAX4090
5
SHDN
MAX4090
IN 3 4 VCC 1 2 GND 3 IN GND
SHDN
SC70/SOT23
VCC
DFN
________________________________________________________________ Maxim Integrated Products
1
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.
3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current MAX4090
ABSOLUTE MAXIMUM RATINGS
VCC to GND ............................................................. -0.3V to +6V OUT, FB, SHDN to GND............................ -0.3V to (VCC + 0.3V) IN to GND (Note 1) ................................... VCLP to (VCC + 0.3V) IN Short-Circuit Duration from -0.3V to VCLP ........................1min Output Short-Circuit Duration to VCC or GND .......... Continuous Continuous Power Dissipation (TA = +70C) 6-Pin SOT23 (derate 8.7mW/C above +70C) ...........695mW 6-Pin SC70 (derate 3.1mW/C above +70C) .............245mW 6-Pin DFN (derate 3.6mW/C above +70C) ..............290mW Operating Temperature Range MAX4090E .......................................................-40C to +85C MAX4090A .....................................................-40C to +125C Junction Temperature .....................................................+150C Storage Temperature Range ............................-65C to +150C Lead Temperature (soldering, 10s) ................................+300C
Note 1: VCLP is the input clamp voltage as defined in the DC Electrical Characteristics table.
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.
DC ELECTRICAL CHARACTERISTICS
(VCC = 3.0V, GND = 0V, CIN = 0.1F from IN to GND, RL = infinity to GND, FB shorted to OUT, SHDN = 3.0V, TA = -40C to +85C (MAX4090E), TA = -40C to +125C (MAX4090A). Typical values are at TA = +25C, unless otherwise noted.) (Note 2)
PARAMETER Supply Voltage Range Quiescent Supply Current Shutdown Supply Current Input Clamp Voltage Input Voltage Range Input Bias Current Input Resistance Voltage Gain Power-Supply Rejection Ratio Output-Voltage High Swing Output-Voltage Low Swing Output Current Output Short-Circuit Current SHDN Logic-Low Threshold SHDN Logic-High Threshold SHDN Input Current Shutdown Output Impedance AV PSRR VOH VOL IOUT ISC VIL VIH IIH At DC ROUT
(Disabled)
SYMBOL VCC ICC ISHDN VCLP VIN IBIAS
CONDITIONS Guaranteed by PSRR VIN = VCLP SHDN = 0V Input referred Inferred from voltage gain (Note 3) VIN = 1.45V VCLP + 0.5V < VIN < VCLP + 1V RL = 150, 0.5V < VIN < 1.45V (Note 4) 2.7V < VCC < 5.5V RL = 150 to GND RL = 150 to GND Sourcing, RL = 20 to GND Sinking, RL = 20 to VCC OUT shorted to VCC or GND VCC = 3V VCC = 5V VCC = 3V VCC = 5V
MIN 2.7
TYP 6.5 6.5 0.15
MAX 5.5 10 10 1 0.47 1.45 35 2.1
UNITS V mA A V V A M V/V dB V
0.27 VCLP
0.38 22.5 3
1.9 60 2.55 4.3 45 40
2 80 2.7 4.6 VCLP 85 85 110
0.47
V mA mA
VCC x 0.3 VCC x 0.7 0.003 4 2 SHDN = 0V At 3.58MHz or 4.43MHz 1
V V A k
2
_______________________________________________________________________________________
3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current
AC ELECTRICAL CHARACTERISTICS
(VCC = 3.0V, GND = 0V, FB shorted to OUT, CIN = 0.1F, RIN = 75 to GND, RL = 150 to GND, SHDN = VCC, TA = +25C, unless otherwise noted.)
PARAMETER Small-Signal -3dB Bandwidth Large-Signal -3dB Bandwidth Small-Signal 0.1dB Gain Flatness Large-Signal 0.1dB Gain Flatness Slew Rate Settling Time to 0.1% Power-Supply Rejection Ratio Output Impedance Differential Gain Differential Phase Group Delay Peak Signal to RMS Noise Droop SHDN Enable Time SHDN Disable Time tON tOFF SYMBOL BWSS BWLS VOUT = 2VP-P CONDITIONS VOUT = 100mVP-P MIN TYP 55 45 25 17 275 25 50 2.5 VCC = 3V VCC = 5V VCC = 3V VCC = 5V 1 0.5 0.8 0.5 20 65 2 250 50 3 MAX UNITS MHz MHz MHz MHz V/s ns dB % Degrees ns dB % ns ns
MAX4090
BW0.1dBSS VOUT = 100mVP-P BW0.1dBLS VOUT = 2VP-P SR VOUT = 2V step tS PSRR ZOUT DG DP D/dT SNR VOUT = 2V step f = 100kHz f = 5MHz NTSC NTSC
f = 3.58MHz or 4.43MHz VIN = 1VP-P, 10MHz BW CIN = 0.1F (Note 4) VIN = VCLP + 1V, SHDN = 3V, VOUT settled to within 1% of the final voltage VIN = VCLP + 1V, SHDN = 0V, VOUT settled to below 1% of the output voltage
Note 2: All devices are 100% production tested at TA = +25C. Specifications over temperature limits are guaranteed by design. Note 3: Voltage gain (AV) is referenced to the clamp voltage, i.e., an input voltage of VIN = VCLP + VI would produce an output voltage of VOUT = VCLP + AV x VI. Note 4: Droop is guaranteed by the Input Bias Current specification.
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3
3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current MAX4090
Typical Operating Characteristics
(VCC = 3.0V, GND = 0V, FB shorted to OUT, CIN = 0.1F, RIN = 75 to GND, RL = 150 to GND, SHDN = VCC, TA = +25C, unless otherwise noted.)
SMALL-SIGNAL GAIN vs. FREQUENCY
MAX4090 toc01
SMALL-SIGNAL GAIN FLATNESS vs. FREQUENCY
MAX4090 toc02
SMALL-SIGNAL GAIN vs. FREQUENCY
2 1 0 GAIN (dB) -1 -2 -3
MAX4090 toc03
3 2 1 0 GAIN (dB) -1 -2 -3 -4 -5 -6 AV = 2 VCC = 3V VOUT = 100mVP-P 100k 1M 10M
0.3 0.2 0.1 0 GAIN (dB) -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 AV = 2 VCC = 3V VOUT = 100mVP-P 100k 1M 10M
3
-4 -5 -6 100M
AV = 2 VCC = 5V VOUT = 100mVP-P 100k 1M 10M 100M
100M
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
SMALL-SIGNAL GAIN FLATNESS vs. FREQUENCY
MAX4090 toc04
LARGE-SIGNAL GAIN vs. FREQUENCY
MAX4090 toc05
LARGE-SIGNAL GAIN FLATNESS vs. FREQUENCY
0.2 0.1 0 GAIN (dB) -0.1 -0.2 -0.3
MAX4090 toc06
0.3 0.2 0.1 0 GAIN (dB) -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 AV = 2 VCC = 5V VOUT = 100mVP-P 100k 1M 10M
3 2 1 0 GAIN (dB) -1 -2 -3 -4 -5 -6 AV = 2 VCC = 3V VOUT = 2VP-P 100k 1M 10M
0.3
-0.4 -0.5 -0.6 100M FREQUENCY (Hz)
AV = 2 VCC = 3V VOUT = 2VP-P 100k 1M 10M 100M
100M
FREQUENCY (Hz)
FREQUENCY (Hz)
LARGE-SIGNAL GAIN vs. FREQUENCY
MAX4090 toc07
LARGE-SIGNAL GAIN FLATNESS vs. FREQUENCY
MAX4090 toc08
POWER-SUPPLY REJECTION RATIO vs. FREQUENCY
VCC = 3V -10 -20 PSRR (dB) -30 -40 -50 -60
MAX4090 toc09
3 2 1 0 GAIN (dB) -1 -2 -3 -4 -5 -6 AV = 2 VCC = 5V VOUT = 2VP-P 100k 1M 10M
0.3 0.2 0.1 0 GAIN (dB) -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 AV = 2 VCC = 5V VOUT = 2VP-P 100k 1M 10M
0
-70 -80 100M 10k 100k 1M FREQUENCY (Hz) 10M 100M FREQUENCY (Hz)
100M
FREQUENCY (Hz)
4
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3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current MAX4090
Typical Operating Characteristics (continued)
(VCC = 3.0V, GND = 0V, FB shorted to OUT, CIN = 0.1F, RIN = 75 to GND, RL = 150 to GND, SHDN = VCC, TA = +25C, unless otherwise noted.)
POWER-SUPPLY REJECTION RATIO vs. FREQUENCY
MAX4090 toc10
QUIESCENT SUPPLY CURRENT vs. TEMPERATURE
MAX4090 toc11
CLAMP VOLTAGE vs. TEMPERATURE
0.55 0.50 VCLAMP (V)
MAX4090 toc12
0 -10 -20 PSRR (dB) -30 -40 -50 -60 -70 -80 10k 100k 1M FREQUENCY (Hz) 10M VCC = 5V
6.8 6.7 SUPPLY CURRENT (mA) 6.6 VCC = 5V 6.5 6.4 6.3 6.2 6.1 VCC = 3V
0.60
0.45 0.40 0.35 0.30 0.25 0.20
100M
-40 -20
0
20
40
60
80 100 120 140
-40 -20
0
20
40
60
80 100 120 140
TEMPERATURE (C)
TEMPERATURE (C)
VOLTAGE GAIN vs. TEMPERATURE
MAX4090 toc13
OUTPUT-VOLTAGE HIGH SWING vs. TEMPERATURE
2.9 OUTPUT-VOLTAGE HIGH (V) 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 VCC = 3V
MAX4090 toc14
2.10
3.0
2.05 GAIN (V/V)
2.00
1.95
1.90 -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE (C)
2.0 -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE (C)
OUTPUT-VOLTAGE HIGH SWING vs. TEMPERATURE
4.9 OUTPUT-VOLTAGE HIGH (V) 4.8 4.7 4.6 4.5 4.4 4.3 4.2 4.1 4.0 -40 -20 0 20 40 60 80 100 120 140 VOUT 1V/div VCC = 5V
MAX4090 toc15
LARGE-SIGNAL PULSE RESPONSE
MAX4090 toc16
5.0
VIN 500mV/div
10ns/div
TEMPERATURE (C)
_______________________________________________________________________________________
5
3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current MAX4090
Typical Operating Characteristics (continued)
(VCC = 3.0V, GND = 0V, FB shorted to OUT, CIN = 0.1F, RIN = 75 to GND, RL = 150 to GND, SHDN = VCC, TA = +25C, unless otherwise noted.)
SMALL-SIGNAL PULSE RESPONSE
MAX4090 toc17
DIFFERENTIAL GAIN AND PHASE
DIFFERENTIAL GAIN (%) 1.0 0 -1.0 -2.0 1.0 DIFFERENTIAL PHASE () 0 1 2 3 4 5 6
MAX4090 toc18
2.0
VIN 25mV/div
VOUT 50mV/div
0.5 0 -0.5 -1.0 0 1 2 3 4 5 6
10ns/div
Pin Description
PIN SOT23/ SC70 1 2 3 DFN 4 2 3 NAME OUT GND IN FUNCTION Video Output Ground Video Input Power-Supply Voltage. Bypass with a 0.1F capacitor to ground as close to pin as possible. Shutdown. Pull SHDN low to place the MAX4090 in lowpower shutdown mode. Feedback. Connect to OUT.
RIN IN
Typical Application Circuit
VCC
MAX4090
OUT CLAMP RL
4
1
VCC
FB
5 6
5 6
SHDN FB
SHDN
GND
6
_______________________________________________________________________________________
3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current MAX4090
Detailed Description
The MAX4090 3V/5V, 6dB video buffer with sync-tip clamp and low-power shutdown mode is available in tiny SOT23 and SC70 packages. The MAX4090 is designed to drive DC-coupled, 150 back-terminated video loads in portable video applications such as digital still cams, portable DVD players, digital camcorders, PDAs, videoenabled cell phones, portable game systems, and notebook computers. The input clamp positions the video waveform at the output and allows the MAX4090 to be used as a DC-coupled output driver. The MAX4090 operates from a single 2.7V to 5.5V supply and consumes only 6.5mA of supply current. The low-power shutdown mode reduces the supply current to 150nA, making the MAX4090 ideal for low-voltage, battery-powered video applications. The input signal to the MAX4090 is AC-coupled through a capacitor into an active sync-tip clamp circuit, which places the minimum of the video signal at approximately 0.38V. The output buffer amplifies the video signal while still maintaining the 0.38V clamp voltage at the output. For example, if VIN = 0.38V, then VOUT = 0.38V. If VIN = (0.38V + 1V) = 1.38V, then VOUT = (0.38V + 2 X (1V)) = 2.38V. The net result is that a 2V video output signal swings within the usable output voltage range of the output buffer when VCC = 3V. The active sync-tip clamp also requires that the input impedance seen by the input capacitor be less than 100 typically to function properly. This is easily met by the 75 input resistor prior to the input-coupling capacitor and the back termination from a prior stage. Insufficient input resistance to ground causes the MAX4090 to appear to oscillate. Never operate the MAX4090 in this mode.
Using the MAX4090 with the Reconstruction Filter
In most video applications, the video signal generated from the DAC requires a reconstruction filter to smooth out the signal and attenuate the sampling aliases. The MAX4090 is a direct DC-coupled output driver, which can be used after the reconstruction filter to drive the video signal. The driving load from the video DAC can be varied from 75 to 300. A low input impedance (<100) is required by the MAX4090 in normal operation, special care must be taken when a reconstruction filter is used in front of the MAX4090. For standard video signal, the video passband is about 6MHz and the system oversampling frequency is at 27MHz. Normally, a 9MHz BW lowpass filter can be used for the reconstruction filter. This section demonstrates the methods to build simple 2nd- and 3rd-order passive butterworth lowpass filters at the 9MHz cutoff frequency and the techniques to use them with the MAX4090 (Figures 1 and 4). 2nd-Order Butterworth Lowpass Filter Realization Table 1 shows the normalized 2nd-order butterworth LPF component values at 1rad/s with a source/load impedance of 1. With the following equations, the L and C can be calculated for the cutoff frequency at 9MHz. Table 2 shows the appropriated L and C values for different source/ load impedance, the bench measurement values for the -3dB BW and attenuation at 27MHz. There is approximately 20dB attenuation at 27MHz, which effectively attenuates the sampling aliases. The MAX4090 requires low input impedance for stable operation and it does not like the reactive input impedance. For R1/R2 greater than 100, a series resistor R IS (Figure 1)
Shutdown Mode
The MAX4090 features a low-power shutdown mode (ISHDN = 150nA) for battery-powered/portable applications. Pulling the SHDN pin high enables the output. Connecting the SHDN pin to ground (GND) disables the output and places the MAX4090 into a low-power shutdown mode.
Applications Information
Input Coupling the MAX4090
The MAX4090 input must be AC-coupled because the input capacitor stores the clamp voltage. The MAX4090 requires a typical value of 0.1F for the input clamp to meet the Line Droop specification. A minimum of a ceramic capacitor with an X7R temperature coefficient is recommended to avoid temperature-related problems with Line Droop. For extended temperature operation, such as outdoor applications, or where the impressed voltage is close to the rated voltage of the capacitor, a film dielectric is recommended. Increasing the capacitor value slows the clamp capture time. Values above 0.5F should be avoided since they do not improve the clamp's performance.
Table 1. 2nd-Order Butterworth Lowpass Filter Normalized Values
Rn1 = Rn2 () 1 Cn1 (F) 1.414 Ln1 (H) 1.414
_______________________________________________________________________________________
7
3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current MAX4090
between 20 to 100 is needed to isolate the input capacitor (C4) to the filter to prevent the oscillation problem. C= Cn LR L= n L 2fCRL 2fC 3rd-Order Butterworth Lowpass Filter Realization If more flat passband and more stopband attenuation are needed, a 3rd-order LPF can be used. The design procedures are similar to the 2nd-order butterworth LPF. Table 3 shows the normalized 3rd-order butterworth lowpass filter with the cutoff frequency at 1 rad/s and the stopband frequency at 3 rad/s. Table 4 shows the appropriated L and C values for different source/load impedance and the bench measurement values for -3dB BW and attenuation at 27MHz. The attenuation is over 40dB at 27MHz. At 6MHz, the attenuation is approximately 0.6dB for R1 = R2 = 150 (Figure 5).
VCC
Figure 2 shows the frequency response for R1 = R2 = 150. At 6MHz, the attenuation is about 1.4dB. The attenuation at 27MHz is about 20dB. Figure 3 shows the multiburst response for R1 = R2 = 150.
C7 1F 2-POLE RECONSTRUCTION LPF VIDEO CURRENT DAC R1 150 L1 3.9H RIS 49.9 C4 0.1F IN C1 150pF R2 150 VCC OUT R3 75 VOUT
MAX4090
SHDN GND VCC FB
Figure 1. 2nd-Order Butterworth LPF with MAX4090
FREQUENCY RESPONSE
0 -10 -20 GAIN (dB) -30 -40 -50 -60 0.1 1 10 100 FREQUENCY (MHz) VOUT 500mV/div
VIN 500mV/div
10s/div
Figure 2. Frequency Response
Figure 3. Multiburst Response
8
_______________________________________________________________________________________
3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current MAX4090
VCC 3-POLE RECONSTRUCTION LPF C3 6.8pF C7 1F
VIDEO CURRENT DAC R1 150
L1 4.7H
RIS 49.9
C4 0.1F IN
VCC OUT
R3 75
VOUT
C1 120pF
C2 120pF
R2 150 SHDN
MAX4090
FB GND VCC
Figure 4. 3rd-Order Butterworth LPF with MAX4090
Table 2. Bench Measurement Values
R1 = R2 () 75 150 200 300 C1 (p f) 330 150 120 82 L1 (H) 1.8 3.9 4.7 8.2 RIS () 0 50 50 100 3dB BW (MHz) 8.7 9.0 9.3 8.7 ATTENUATION AT 27MHz (dB) 20 20 22 20
Table 3. 3rd-Order Butterworth Lowpass Filter Normalized Values
Rn1 = Rn2 () 1 Cn1 (F) 0.923 Cn2 (F) 0.923 Cn3 (F) 0.06 Ln1 (H) 1.846
Table 4. Bench Measurement Values
R1 = R2 () 75 150 300 C1 (pF) 220 120 56 C2 (pF) 220 120 56 C3 (pF) 15.0 6.8 3.3 L (H) 2.2 4.7 10.0 RIS () 0 50 100 3dB BW (MHz) 9.3 8.9 9.0 ATTENUATION AT 27MHz (dB) 43 50 45
Sag Correction In a 5V application, the MAX4090 can use the sag configuration if an AC-coupled output video signal is required. Sag correction refers to the low-frequency compensation for the highpass filter formed by the 150 load and the output capacitor. In video applications, the cutoff frequency must be low enough to pass the vertical sync interval to avoid field tilt. This cutoff frequency should be less than 5Hz, and the coupling capacitor must be very large in normal configuration,
typically > 220F. In sag configuration, the MAX4090 eliminates the need for large coupling capacitors, and instead requires two 22F capacitors (Figure 6) to reach the same performance as the large capacitor. Bench experiments show that increasing the output coupling capacitor C5 beyond 47F does not improve the performance. If the supply voltage is less than 4.5V, the sag correction is not recommended for the MAX4090.
_______________________________________________________________________________________
9
3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current MAX4090
FREQUENCY RESPONSE
0 -10 -20 GAIN (dB) -30 -40 -50 -60 0.1 1 10 100 FREQUENCY (MHz)
Layout and Power-Supply Bypassing
The MAX4090 operates from single 2.7V to 5.5V supply. Bypass the supply with a 0.1F capacitor as close to the pin as possible. Maxim recommends using microstrip and stripline techniques to obtain full bandwidth. To ensure that the PC board does not degrade the device's performance, design it for a frequency greater than 1GHz. Pay careful attention to inputs and outputs to avoid large parasitic capacitance. Whether or not you use a constant-impedance board, observe the following design guidelines: * Do not use wire-wrap boards; they are too inductive. * Do not use IC sockets; they increase parasitic capacitance and inductance. * Use surface-mount instead of through-hole components for better, high-frequency performance. * Use a PC board with at least two layers; it should be as free from voids as possible. * Keep signal lines as short and as straight as possible. Do not make 90 turns; round all corners.
Figure 5. Frequency Response for R1 = R2 = 150
VCC 3-POLE RECONSTRUCTION LPF C3 6.8pF C7 1F
VIDEO CURRENT DAC R1 150
L1 4.7H
RIS 49.9
C4 0.1F IN
VCC OUT
C5 22F
R3 75
VOUT
C1 120pF
C2 120pF
R2 150 SHDN
MAX4090
FB GND VCC
C6 22F
Figure 6. Sag Correction Configuration
10
______________________________________________________________________________________
3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current MAX4090
VCC = 2.7V TO 5.5V VCC CBYP 0.1F SHDN ROUT 75
RSOURCE 75
CIN 0.1F IN
MAX4090
ESIGNAL
RIN 75 CLAMP
OUT
EOUT RL 75
FB
GND
Figure 7. Typical Operating Circuit
VCC = 2.7V TO 5.5V VCC CBYP 0.1F SHDN ROUT 75
RSOURCE 75
CIN 0.1F IN
MAX4090
ESIGNAL
RIN 75 CLAMP
OUT
330F EOUT RL 75
FB
GND
Figure 8. AC-Coupled Output Circuit
Chip Information
TRANSISTOR COUNT: 755 PROCESS: BiCMOS
______________________________________________________________________________________ 11
3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current MAX4090
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.)
6LSOT.EPS
PACKAGE OUTLINE, SOT 6L BODY
21-0058
G
1
1
12
______________________________________________________________________________________
3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current
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.)
MAX4090
D
A
e
b
N
XXXX XXXX XXXX
SOLDER MASK COVERAGE
E
PIN 1 0.10x45
L
PIN 1 INDEX AREA SAMPLE MARKING 7 1 A A
L1
(N/2 -1) x e)
C L
C L
b A A2 A1
L e
EVEN TERMINAL
L e
ODD TERMINAL
PACKAGE OUTLINE, 6, 8, 10L uDFN, 2x2x0.80 mm
-DRAWING NOT TO SCALE-
21-0164
A
1
2
______________________________________________________________________________________
6, 8, 10L UDFN.EPS
13
3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current MAX4090
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.)
COMMON DIMENSIONS SYMBOL A A1 A2 D E L L1 MIN. 0.70 0.15 0.020 1.95 1.95 0.30 NOM. 0.75 0.20 0.025 2.00 2.00 0.40 0.10 REF. MAX. 0.80 0.25 0.035 2.05 2.05 0.50
PACKAGE VARIATIONS PKG. CODE L622-1 L822-1 L1022-1 N 6 8 10 e 0.65 BSC 0.50 BSC 0.40 BSC b 0.300.05 0.250.05 0.200.03 (N/2 -1) x e 1.30 REF. 1.50 REF. 1.60 REF.
PACKAGE OUTLINE, 6, 8, 10L uDFN, 2x2x0.80 mm
-DRAWING NOT TO SCALE-
21-0164
A
2
2
14
______________________________________________________________________________________
3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current
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.)
MAX4090
PACKAGE OUTLINE, 6L SC70
21-0077
C
1
1
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 (c) 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc.
SC70, 6L.EPS

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