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Part: MAX4090EXT-T
Category:
Multimedia
-> Audio/Video
Description: MAX4090 3V/5V, 6dB Video Buffer With Sync-tip Clamp, Output Sag Correction, And 150nA Shutdown Current
Company: Maxim Integrated Products
Datasheet: Download MAX4090EXT-T datasheet File size : 595 kB
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Datasheet text preview:
19-2813; Rev 0; 4/03
3V/5V, 6dB Video Buffer with Sync-Tip Clamp, Output Sag Correction, and 150nA Shutdown Current
General Description
The MAX4090 3V/5V, 6dB video buffer with sync-tip clamp, output sag correction, and low-power shutdown mode is available in tiny SOT23 and SC70 packages. The sag-corrected output of the MAX4090 is designed t o drive AC-coupled, 150 b a c k - t e r m i n a t e d 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 sag correction feature introduces low-frequency compensation that reduces the value of the normally bulky and expensive 330µF A C - c o u p l i n g capacitor to two small, less expensive 22µF capacitors. The input clamp positions the video waveform at the output and allows the MAX4090 to be used as either an AC- or 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. T h e MAX4090 is available in tiny 6-pin SOT23 and SC70 packages and is specified over the extended -40°C to +85°C temperature range. o Input Sync-Tip Clamp o AC- or DC-Coupled Output o Low-Power Shutdown Mode Reduces Supply Current to 150nA o SAG Correction Reduces Output-Coupling Capacitors from 330µF to 22µF o Available in Space-Saving SOT23 and SC70 Packages
Features
o Single-Supply Operation from 2.7V to 5.5V
MAX4090
Ordering Information
PART MAX4090EXT-T MAX4090EUT-T TEMP RANGE -40°C to +85°C -40°C to +85°C PINPACKAGE 6 SC70-6 6 SOT23-6 TOP MARK ABM ABOX
Applications
Portable Video/Game Systems/DVD Players Digital Camcorders/Televisions/Still Cameras PDAs Video-Enabled Cell Phones Notebook Computers Portable/Flat-Panel Displays
Block Diagram
TOP VIEW
VCC
Pin Configuration
TOP VIEW
MAX4090
IN OUT CLAMP 2.3k SAG
OUT 1
6
SAG 580 780 SHDN
GND 2
MAX4090
5
SHDN
1.2k
IN 3
4
VCC GND
SC70/SOT23
________________________________________________________________ Maxim Integrated Products
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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, Output Sag Correction, and 150nA Shutdown Current MAX4090
ABSOLUTE MAXIMUM RATINGS
VCC to GND .... -0.3V to +6V OUT, SAG, 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 = +70°C) 6-Pin SOT23 (derate 8.7mW/°C above +70°C) ..695mW 6-Pin SC70 (derate 3.1mW/°C above +70°C) ....245mW 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
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 = 0.1µF from IN to GND, RL = infinity to GND, SAG shorted to OUT, SHDN = 3.0V, TA = -40°C to +85°C. Typical values are at TA = +25°C, 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
( D i s a b l e d)
SYMBOL VCC ICC ISHDN V CLP VIN IB I A S
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 RL = 150 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 µA V V µA M V/V dB V
0.27 V CLP
0.38 22.5 3
1.9 60 2.55 4.3 45 40
2 80 2.7 4.6 V CLP 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 µA k
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3V/5V, 6dB Video Buffer with Sync-Tip Clamp, Output Sag Correction, and 150nA Shutdown Current
AC ELECTRICAL CHARACTERISTICS
(VCC = 3.0V, GND = 0V, COUT = CSAG = 22µF, CIN = 0.1µF, RIN = 75 to GND, RL = 150 to GND, SHDN = VCC, TA = +25°C, 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/µs ns dB % Degrees ns dB % ns ns
MAX4090
BW0.1dBSS VOUT = 100mVP-P BW0.1dBLS VOUT = 2VP-P SR tS PSRR Z OUT DG DP D/dT SNR VOUT = 2V step VOUT = 2V step f = 100kHz f = 5MHz NTSC NTSC
f = 3.58MHz or 4.43MHz VIN = 1VP-P, 10MHz BW CIN = 0.1µF (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 = +25°C. 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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