MAX457CPA+ ,Dual, 70MHz Video AmplifierFeatures
. Unity-Gain Bandwidth of 70MHz
. Low Input Capacitance: 4pF
. No Frequency Compe ..
MAX457CSA ,Dual CMOS Video AmplifierApplications
Driving Flash Converters
Video Distribution Amplifiers
Wplcll Operating Circuit
..
MAX457CSA+ ,Dual, 70MHz Video AmplifierGeneral Description
The MAX457 contains two unity-gain stable video
amplifiers that are capable ..
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MAXIM
Dual CMOS Vldeo Amplifier
GeneralDeocrIpuon
The MAX457 cont ..
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MAX8678ETE+ ,White LED Charge Pump with 1.1W Audio AmplifierApplications PART PIN-PACKAGE TOP MARK PKG CODECell Phones and Smartphones16 Thin QFNMAX8678ETE+ AF ..
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MAX867ESA ,3.3V/5V or Adjustable-Output / Single-Cell DC-DC ConvertersMAX866/MAX86719-0374; Rev 1; 5/963.3V/5V or Adjustable-Output, Single-Cell DC-DC Converters________ ..
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MAX457CPA+-MAX457CSA+
Dual, 70MHz Video Amplifier
19-1318;Rev 1; 11/04
2AYIL4] Diet fl 2f'lyll
Dual CMOS Video Amplifier
General Description
The MAX457 contains two unity-gain stable video
amplifiers that are capable of driving 75n loads with
a -3dB bandwidth of 70MHz, The amplifiers operate
from iSV supplies and together consume about
350mW of power. Closed loop gain is set by two
external resistors. The pinout of the MAX457 follows
that of conventional 8-pin, dual op amps.
The amplifiers require no external compensation and
because of the CMOS process offer low input bias
current of typically 100pA. The isolation between the
amplifiers is typically 72dB at 5MHz and differential
phase and gain are 0.2 degrees and 0.5% respectively.
Applications
750 Cable Drivers
Output Amplifiers for Video Crosspoint
Switches
High Speed, Low Gain Applications
Driving Flash Converters
Video Distribution Amplifiers
1ypical Operating Circuit
o--) l T -
INPUT r MAX457 T -
I I T .t1Vp-p
1 I OUTPUTS
5 t INTO mn
MAX457 Dual Video 70MHz Distribution Amplifier
Features
Unlty-Gain Bandwidth of 70MHz
Low Input Capacitance: 4pF
No Frequency Compensation Required
Low Input Bias Current: 100pA
Directly Drives 750 Cables
High Isolation Between Amplifiers: 72dB at 5MHe
Low Offset Voltage: 2mV
Ordering Information
PART TEMP. RANGE PACKAGE
MAX457CPA 0°C to +70°C 8 Lead Plastic DIP
MAX457CSA 0°C to '70''C 8 Lead SO
MAX457C/D 0''C to +7ty'C Dice
MAX457EPA -40°C to +85°c 8 Lead Plastic DIP
MAX457EJA -4tPC to +85°c 8 Lead CERDIP
Pin Configuration
Top View
oun [I M Er) w
4m fE - ' E cm
Hm E E -IN2
‘r E MAX457 Ettre
IVI/JXI/l/I
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 .
htttr.//www.datasheetCataloa.com/
£91wi
Dual CMOS Video Amplifier
ABSOLUTE MAXIMUM RATINGS
N Total Supply Voltage iv' to Ir) ..................... 12V Lead temperature (Soldering 10 sec) ............ +300°C
ttt Analog Input Voltage ........... (V' +0.3V) to (V' -0.3V) Duration of Output Short Circuit to Ground . Indefinite
sr Storage Temperature Range ............ -65"C to +150°C Input Current, power on or off .................. iSOmA
', Operating Temperature Range Continuous Total Power Dissipation at 70°C
MAX457CPA, MAX457CSA, Plastic DIP (derate 8.3mW/°C above 70° C) ..... 660mW
st MAX457C/D ............................. tPC to +70°C CERDIP (derate 8.0mW/°C above 70''C) ........ 640mW
E MAX457EPA. MAX457EJA .............. -40°C to +85°C Small Outline (derate 5.9mW/“C above 70°C) ... 470mW
Stresses above 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 above those indicated in the operational sections of the specification vs no:
implied. Exposure to absolute maximum rating conditions for extended periods may affect dewce reliability.
ELECTRICAL CHARACTERISTICS .
(V' = +5V, V" = -5V, -2V S Ile: S. +2V, Output Load Resistor x 1500, TA = +25°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Voltage Range Vm Over Temperature Range -2 +2 V
Input Offset Voltage Vos -5 i2 +5 mV
Offset Voltage Drift dVos/dT 20 100 pV/°C
TA = +25°C 0.1 1
Input Bias Current l3 T, = +70°C 5 40 nA
TA -- +85°C 15 100
Input Resistance Rm TA = +25°C 10 GO
Input Capacitance Cm Plastic Package 4 pF
fh. = 10000 200 300
Open Loop Voltage Gain AVOL RL = 1500 45 65 V/V
RL = 750 25 35
t,''/,'/,'1,eetru'',e1t,ne2,ilt,nt dAvoc/dT R" = 1500 -0.6 %/°C
30mm" Mode Rejection CMRR -2V 5 Vm s +2V 54 66 dB
:23 Supply Rejection PSRR :4.5v to 15.5v 54 66 dB
Slew Rate SR (Note 1) 150 300 V/ps
-3dB Bandwidth GBW1 Av = OdB, R = 750 (Note 1) 50 70 MHz
-3dB Bandwidth GBW2 Av = 6dB, RL = 1500 (Note 1) 35 50 MHz
Differential Phase Error DP (Notes 1, 2) 0.2 deg
Differential Gain Error DG (Notes I, 2) 0.5 %
Settling Time to 1% ts RL = 1500. Av = 6dB 50 ns
Output Impedance ROUT f = 100kHz, Av = MB 2 n
Full Scale Output Current Iour Ru = 1500 t15 120 _ mA
Output Voltage Swing VouT RL = 1500 12.1 $2.5 V
Input Noise, DC to 50MHz VN (Note 1) 0.15 0.5 mVnMs
2t1itt,'rst'tvveer1 ISOL f = 5MHz (Note 1) 60 72 dB
Operating Supply Voltage V', V' $4.5 $5.5 V
Supply Current Is 't , :gg:g Both Amplifiers ie ifl fi mA
Note 1: Guaranteed by design.
Note 2: Input test signal: 3.58MHz sine wave of amplitude 40 IRE superimposed on a linear ramp (0 to 100 IRE). The amplifier
is operated at a gain of 2VN while driving a 1500 load. 140 IRE = 1.0V.
2 lVl/J XI/Vl
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