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19-0468; Rev 1; 5/97
UAL IT MAN TION K SHEET VALUA E TA WS DA FOLLO
330MHz, Gain of +1/Gain of +2 Closed-Loop Buffers
____________________________Features
o High Speed: 330MHz -3dB Bandwidth (MAX4178) 310MHz -3dB Bandwidth (MAX4278) 250MHz Full-Power Bandwidth (VOUT = 2Vp-p) 150MHz 0.1dB Flatness Bandwidth 1300V/s Slew Rate (MAX4178) 1600V/s Slew Rate (MAX4278) o Low Differential Phase/Gain Error: 0.01/0.04% o 8mA Supply Current o 1A Input Bias Current o 0.5mV Input Offset Voltage o 5nV/Hz Input-Referred Voltage Noise o 2pA/Hz Input-Referred Current Noise o 1.0% Max Gain Error with 100 Load o Short-Circuit Protected o 8000V ESD Protection o Available in Space-Saving SOT23 Package
_______________General Description
The MAX4178/MAX4278 are 5V, wide-bandwidth, fastsettling, closed-loop buffers featuring high slew rate, high precision, high output current, low noise, and low differential gain and phase errors. The MAX4178, with a -3dB bandwidth of 330MHz, is preset for unity voltage gain (0dB). The MAX4278 is preset for a voltage gain of +2 (6dB) and has a 310MHz -3dB bandwidth. The MAX4178/MAX4278 feature the high slew rate and low power that are characteristic of current-mode feedback amplifiers. However, unlike conventional currentmode feedback amplifiers, these devices have a unique input stage that combines the benefits of current-feedback topology with those of the traditional voltage-feedback topology. This combination results in low input offset voltage and bias current, low noise, and high gain precision and power-supply rejection. The MAX4178/MAX4278 are ideally suited for driving 50 or 75 loads. They are the perfect choice for highspeed cable-driving applications, such as video routing. The MAX4178/MAX4278 are available in DIP, SO, and space-saving MAX and SOT23 packages.
MAX4178/MAX4278
________________________Applications
Broadcast and High-Definition TV Systems Video Switching and Routing High-Speed Cable Drivers Communications Medical Imaging Precision High-Speed DAC/ADC Buffers
______________Ordering Information
PART MAX4178EPA MAX4178ESA MAX4178EUA MAX4178EUK-T MAX4178MJA TEMP. RANGE -40C to +85C -40C to +85C -40C to +85C -40C to +85C -55C to +125C PINPACKAGE 8 Plastic DIP 8 SO 8 MAX 5 SOT23 8 CERDIP SOT TOP MARK - - - ABYX -
Ordering Information continued at end of data sheet.
__________Typical Operating Circuit
_________________Pin Configurations
TOP VIEW
75 VIN
VOUT
OUT 1
5
VCC
N.C. 1 GND 2 IN 3
8
N.C. VCC OUT N.C.
MAX4278
VEE 2
MAX4178 MAX4278
4 GND
MAX4178 MAX4278
7 6 5
75
75 IN 3 VIDEO/RF CABLE DRIVER
VEE 4
SOT23-5
DIP/SO/MAX
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 408-737-7600 ext. 3468.
330MHz, Gain of +1/Gain of +2 Closed-Loop Buffers MAX4178/MAX4278
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC to VEE) ..................................................12V Input Voltage....................................(VCC + 0.3V) to (VEE - 0.3V) Output Short-Circuit Duration (to GND) .....................Continuous Continuous Power Dissipation (TA = +70C) Plastic DIP (derate 9.09mW/C above +70C) ...........727mW SO (derate 5.88mW/C above +70C) ........................471mW MAX (derate 4.10mW/C above +70C) ...................330mW CERDIP (derate 8.00mW/C above +70C) ................640mW SOT23 (derate 7.10mW/C above +70C) ..................571mW Operating Temperature Ranges (Note 1) MAX4178E_A/MAX4278E_A ...........................-40C to +85C MAX4178EUK/MAX4278EUK .........................-40C to +85C MAX4178MJA/MAX4278MJA .......................-55C to +125C Storage Temperature Range .............................-65C to +160C Lead Temperature (soldering, 10sec) .............................+300C
Note 1: Specifications for the MAX4_78EUK(SOT23 packages) are 100% tested at TA = +25C, and guaranteed by design over temperature.
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 = +5V, VEE = -5V, VOUT = 0V, RL = , TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER Input Voltage Range SYMBOL VIN MAX4178 MAX4278 TA = +25C Input Offset Voltage VOS TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX 1 VS = 4.5V to 5.5V MAX4178 (Note 2) Voltage Gain AV MAX4278 (Note 3) Gain Linearity Output Resistance Minimum Output Current Short-Circuit Output Current Output Voltage Swing AV(LIN) ROUT IOUT ISC VOUT VOUT = 1mV to 2V f = DC TA = -40C to +85C Short to GND RL = 100 RL = 50 TA = +25C TA = TMIN to TMAX MAX4_78E_ _ MAX4_78MJA 2.5 2.0 70 RL = 100 RL = 50 RL = 100 RL = 50 70 0.990 0.985 1.98 1.97 0.01 0.1 100 150 3.0 2.5 8 10 12 14 90 1.000 1.000 2.01 2.01 MAX4_78ESA/EPA/EUA/MJA MAX4_78EUK MAX4_78ESA/EPA/EUA/MJA MAX4_78EUK 2 1 3 5 CONDITIONS MIN 2.5 1.25 TYP 3.0 1.5 0.5 0.5 2.0 3.0 3.0 5.0 V/C A M dB mV MAX UNITS V
Input Offset Voltage Drift Input Bias Current Input Resistance Power-Supply Rejection Ratio
TCVOS IB RIN PSRR
V/V
% mA mA V
Quiescent Supply Current
ISY
mA
Note 2: Voltage Gain = (VOUT - VOS) / VIN measured at VIN = 2.5V. Note 3: Voltage Gain = (VOUT - VOS) / VIN measured at VIN = 1.25V.
2
_______________________________________________________________________________________
330MHz, Gain of +1/Gain of +2 Closed-Loop Buffers
AC ELECTRICAL CHARACTERISTICS
(VCC = +5V, VEE = -5V, RL = 100, TA = +25C, unless otherwise noted.) PARAMETER Small-Signal, -3dB Bandwidth (Note 4) Small-Signal, 0.1dB Bandwidth (Note 4) Full-Power Bandwidth Slew Rate (Note 4) Settling Time Rise/Fall Times Input Capacitance Input Voltage Noise Density Input Current Noise Density Differential Gain (Note 5) Differential Phase (Note 5) Total Harmonic Distortion Spurious-Free Dynamic Range Third-Order Intercept SYMBOL BW BW(0.1dB) FPBW SR tS tR, tF CIN en in DG DP THD SFDR IP3 f = 10MHz f = 10MHz f = 3.58MHz f = 3.58MHz fC = 10MHz, VOUT = 2Vp-p f = 5MHz, VOUT = 2Vp-p fC = 10MHz, VOUT = 2Vp-p MAX4178 MAX4278 MAX4178 MAX4278 MAX4178 MAX4278 MAX4178 MAX4278 MAX4178 MAX4278 VOUT 0.1Vp-p VOUT 0.1Vp-p VOUT = 2Vp-p VOUT = 2Vp-p VOUT = 2V step VOUT = 2V step CONDITIONS MAX4178 MAX4278 MAX4178 MAX4278 MAX4178 MAX4278 MAX4178 MAX4278 to 0.1% to 0.01% 800 900 MIN 240 230 30 30 TYP 330 310 150 150 250 250 1300 1600 10 12 2 1 5 2 0.04 0.04 0.01 0.01 -58 -59 -81 -74 36 31 MAX UNITS MHz MHz MHz MHz V/s ns ns pF nV/Hz pA/Hz % degrees dB dBC dBm
MAX4178/MAX4278
Note 4: Minimum AC specifications are guaranteed by sample test on the MAX4_78ESA only. Note 5: Tested with a 3.58MHz video test signal with an amplitude of 40IRE superimposed on a linear ramp (0 to 100IRE). An IRE is a unit of video signal amplitude developed by the Institute of Radio Engineers. 140IRE = 1V in color systems.
_______________________________________________________________________________________
3
330MHz, Gain of +1/Gain of +2 Closed-Loop Buffers MAX4178/MAX4278
__________________________________________Typical Operating Characteristics
(VCC = +5V, VEE = -5V, RL = 100, CL = 0pF, TA = +25C, unless otherwise noted.)
MAX4178 SMALL-SIGNAL GAIN vs. FREQUENCY
MAX4178/4278-01
MAX4178 GAIN FLATNESS vs. FREQUENCY
MAX4178/4278-02
MAX4178 LARGE-SIGNAL GAIN vs. FREQUENCY
2 1 0 GAIN (dB) -1 -2 -3 -4 -5 -6 -7 VO = 2Vp-p
MAX4178/4278-03
2 1 0 -1 GAIN (dB) -2 -3 -4 -5 -6 -7 -8 1M 10M 100M
0.2 0.1 0 -0.1 GAIN (dB) -0.2 -0.3 -0.4 -0.5 -0.6 -0.7 -0.8
3
1G
1M
10M
100M
1G
1M
10M
100M
1G
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
MAX4278 SMALL-SIGNAL GAIN vs. FREQUENCY
MAX4178/4278-04
MAX4278 GAIN FLATNESS vs. FREQUENCY
MAX4178/4278-05
MAX4278 LARGE-SIGNAL GAIN vs. FREQUENCY
10 8 6 GAIN (dB) 4 2 0 -2 -4 -6 -8 VO = 2Vp-p
MAX4178/4278-06
8 7 6 5 GAIN (dB) 4 3 2 1 0 -1 -2 1M 10M 100M
6.2 6.1 6.0 5.9 GAIN (dB) 5.8 5.7 5.6 5.5 5.4 5.3 5.2
12
1G
1M
10M
100M
1G
1M
10M
100M
1G
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
MAX4178 SMALL-SIGNAL PULSE RESPONSE (CL = 0pF)
MAX4178/4278-07
MAX4178 LARGE-SIGNAL PULSE RESPONSE (CL = 0pF)
MAX4178/4278-08
MAX4278 SMALL-SIGNAL PULSE RESPONSE (CL = 0pF)
MAX4178/4278-09
VOLTAGE (100mV/div)
VOLTAGE (2V/div)
IN
GND
IN
GND
OUT
GND
OUT
GND
OUT (100mV/ div)
VOLTAGE
IN (50mV/ div)
GND
GND
TIME (10ns/div)
TIME (10ns/div)
TIME (10ns/div)
4
_______________________________________________________________________________________
330MHz, Gain of +1/Gain of +2 Closed-Loop Buffers
____________________________Typical Operating Characteristics (continued)
(VCC = +5V, VEE = -5V, RL = 100, CL = 0pF, TA = +25C, unless otherwise noted.)
MAX4178/MAX4278
MAX4278 LARGE-SIGNAL PULSE RESPONSE (CL = 0pF)
MAX4178/4278-10
MAX4178 SMALL-SIGNAL PULSE RESPONSE (CL = 50pF)
MAX4178/4278-11
MAX4178 LARGE-SIGNAL PULSE RESPONSE (CL = 50pF)
MAX4178/4278-12
VOLTAGE (100mV/div)
OUT (2V/div)
GND
OUT
GND
VOLTAGE (2V/div)
IN (1V/div) VOLTAGE
GND
IN
GND
IN
GND
OUT
GND
TIME (10ns/div)
TIME (20ns/div)
TIME (20ns/div)
MAX4178 SMALL-SIGNAL PULSE RESPONSE (CL = 100pF)
MAX4178/4278-13
MAX4178 LARGE-SIGNAL PULSE RESPONSE (CL = 100pF)
MAX4178/4278-14
MAX4278 SMALL-SIGNAL PULSE RESPONSE (CL = 50pF)
MAX4178/4278-15
VOLTAGE (100mV/div)
VOLTAGE (2V/div)
IN
GND
IN
GND
OUT
GND
OUT
GND
OUT (100mV/ div)
VOLTAGE
IN (50mV/ div)
GND
GND
TIME (20ns/div)
TIME (20ns/div)
TIME (20ns/div)
MAX4278 LARGE-SIGNAL PULSE RESPONSE (CL = 50pF)
MAX4178/4278-16
MAX4278 SMALL-SIGNAL PULSE RESPONSE (CL = 100pF)
MAX4178/4278-17
MAX4278 LARGE-SIGNAL PULSE RESPONSE (CL = 100pF)
MAX4178/4278-18
VOLTAGE
IN (1V/div) VOLTAGE
GND
IN (50mV/ div)
GND
IN (1V/div) VOLTAGE
GND
OUT (2V/div)
GND
OUT (100mV/ div)
GND
OUT (2V/div)
GND
TIME (20ns/div)
TIME (20ns/div)
TIME (20ns/div)
_______________________________________________________________________________________
5
330MHz, Gain of +1/Gain of +2 Closed-Loop Buffers MAX4178/MAX4278
____________________________Typical Operating Characteristics (continued)
(VCC = +5V, VEE = -5V, RL = 100, CL = 0pF, TA = +25C, unless otherwise noted.)
MAX4178 DIFFERENTIAL PHASE/GAIN
MAX4178/4278-19
MAX4278 DIFFERENTIAL PHASE/GAIN
0.02 0.01 0.00 -0.01 -0.02 -0.03 -0.04 -0.05 RL = 150 -0.06 0 0.002 0.000 -0.002 -0.004 -0.006 0 IRE 100 RL = 150 -100 1k
MAX4178/4278-20
MAX4178 HARMONIC DISTORTION vs. FREQUENCY
MAX4178/4278-21
DIFF GAIN (%)
0.00 -0.02 -0.04 -0.06 0 0.002 0.000 -0.002 -0.004 -0.006 -0.008 RL = 150 -0.010 0 IRE 100 RL = 150
DIFF GAIN (%)
0.02
-20
-40 DISTORTION (dB)
IRE
100
-60
TOTAL HARMONIC DISTORTION SECOND HARMONIC THIRD HARMONIC
DIFF PHASE (deg)
DIFF PHASE (deg)
-80
IRE
100
10k
100k
1M
10M
100M
FREQUENCY (Hz)
MAX4278 HARMONIC DISTORTION vs. FREQUENCY
MAX4178/4278-22
POWER-SUPPLY REJECTION vs. FREQUENCY
MAX4178/4278-23
OUTPUT IMPEDANCE vs. FREQUENCY
MAX4178/4278-24
-40 2nd HARMONIC -50 TOTAL HARMONIC DISTORTION DISTORTION (dB) -60 -70 -80 -90 -100 10k 100k 1M FREQUENCY (Hz) 10M 3rd HARMONIC
-20 POWER-SUPPLY REJECTION (dB) -30 -40 -50 -60 -70 -80 -90 -100 -110 MAX4178 MAX4278
1k
OUTPUT IMPEDANCE ()
100
10
1 MAX4278 MAX4178 0.1
100M
30k
100k
1M FREQUENCY (Hz)
10M
100M
100k
1M
10M
100M
500M
FREQUENCY (Hz)
INPUT OFFSET VOLTAGE (VOS) vs. TEMPERATURE
MAX4178/4278-25
QUIESCENT SUPPLY CURRENT (ISY) vs. TEMPERATURE
MAX4178/4278-26
INPUT BIAS CURRENT (IB) vs. TEMPERATURE
VIN = 0V 3.0 INPUT BIAS CURRENT (A) 2.5 2.0 1.5 1.0 0.5 0 -50
MAX4178/4278-27
400 VIN = 0V INPUT OFFSET VOLTAGE (V) 300 200 100 0 -100 -200 -300 -50 -25 0 25 50 75 100
14 QUIESCENT SUPPLY CURRENT (mA) 12 10 8 6 4 2 0
3.5
125
-50
-25
0
25
50
75
100
125
-25
0
25
50
75
100
125
TEMPERATURE (C)
TEMPERATURE (C)
TEMPERATURE (C)
6
_______________________________________________________________________________________
330MHz, Gain of +1/Gain of +2 Closed-Loop Buffers
____________________________Typical Operating Characteristics (continued)
(VCC = +5V, VEE = -5V, RL = 100, CL = 0pF, TA = +25C, unless otherwise noted.)
MAX4178/MAX4278
OUTPUT VOLTAGE SWING vs. TEMPERATURE
MAX4178/4278-28
INPUT VOLTAGE RANGE vs. TEMPERATURE
MAX4178/4278-29
4.5 4.0 INPUT VOLTAGE RANGE (V) 3.5 3.0 2.5 2.0 1.5 MAX4278 MAX4178
OUTPUT VOLTAGE SWING (V)
4.0
RL =
8
3.5
RL = 100 RL = 50
3.0
2.5 -50
1.0 -25 0 25 50 75 100 125 -50 -25 0 25 50 75 100 125 TEMPERATURE (C) TEMPERATURE (C)
_____________________Pin Description
PIN SO/MAX/DIP 1, 5, 8 2 3 4 6 7 SOT23 -- 4 3 2 1 5 NAME N.C. GND IN VEE OUT VCC FUNCTION No Connection Ground Input Negative Power Supply. Connect to -5V. Output Positive Power Supply. Connect to +5V.
_______________Detailed Description
The MAX4178/MAX4278 are 5V, wide-bandwidth, fast-settling, closed-loop buffers featuring high slew rate, high precision, high output current, low noise, and low differential gain and phase errors. The MAX4178, with a -3dB bandwidth of 330MHz, is preset for unity voltage gain (0dB). The MAX4278 is preset for a voltage gain of +2 (6dB) and has a 310MHz -3dB bandwidth. These devices have a unique input stage that combines the benefits of a current-mode-feedback topology (high slew rate and low power) with those of a traditional voltage-feedback topology. This combination of architectures results in low input offset voltage and bias current, and high gain precision and power-supply rejection. Under short-circuit conditions, the output current is typically limited to 150mA. This is low enough that a short to ground of any duration will not cause permanent damage to the chip. However, a short to either supply will create double the allowable power dissipation and may cause permanent damage if allowed to exist for longer than approximately 10 seconds. The high output-current capability is an advantage in systems that transmit a signal to several loads. See HighPerformance Video Distribution Amplifier in the Applications Information section.
_______________________________________________________________________________________
7
330MHz, Gain of +1/Gain of +2 Closed-Loop Buffers MAX4178/MAX4278
__________Applications Information
Grounding, Bypassing, and PC Board Layout
In order to obtain the MAX4178/MAX4278's full 330MHz/ 310MHz bandwidths, Micro-Strip and Stripline techniques are recommended in most cases. To ensure that the PC board does not degrade the amplifier's performance, it's a good idea to design the board for a frequency greater than 1GHz. Even with very short traces, it's good practice to use these techniques at critical points, such as inputs and outputs. Whether you use a constant-impedance board or not, observe the following guidelines when designing the board: * Do not use wire-wrap boards. They are too inductive. * Do not use IC sockets. They increase parasitic capacitance and inductance. * In general, surface-mount components have shorter leads and lower parasitic reactance, giving better high-frequency performance than through-hole components. * The PC board should have at least two layers, with one side a signal layer and the other a ground plane. * Keep signal lines as short and straight as possible. Do not make 90 turns; round all corners. * The ground plane should be as free from voids as possible. On Maxim's evaluation kit, the ground plane has been removed from areas where keeping the trace capacitance to a minimum is more important than maintaining ground continuity. capacitor combine to add a pole and excess phase to the loop response. If the frequency of this pole is low enough and if phase margin is degraded sufficiently, oscillations may occur. A second problem when driving capacitive loads results from the amplifier's output impedance, which looks inductive at high frequency. This inductance forms an L-C resonant circuit with the capacitive load, which causes peaking in the frequency response and degrades the amplifier's gain margin. The MAX4178/MAX4278 drive capacitive loads up to 100pF without oscillation. However, some peaking (in the frequency domain) or ringing (in the time domain) may occur. This is shown in Figures 2a and 2b and the in the Small- and Large-Signal Pulse Response graphs in the Typical Operating Characteristics. To drive larger-capacitance loads or to reduce ringing, add an isolation resistor between the amplifier's output and the load, as shown in Figure 1. The value of RISO depends on the circuit's gain and the capacitive load. Figures 3a and 3b show the Bode plots that result when a 20 isolation resistor is used with a voltage follower driving a range of capacitive loads. At the higher capacitor values, the bandwidth is dominated by the RC network, formed by RISO and CL; the bandwidth of the amplifier itself is much higher. Note that adding an isolation resistor degrades gain accuracy. The load and isolation resistor form a divider that decreases the voltage delivered to the load.
Driving Capacitive Loads
The MAX4178/MAX4278 provide maximum AC performance with no output load capacitance. This is the case when the MAX4178/MAX4278 are driving a correctly terminated transmission line (e.g., a back-terminated 75 cable). However, the MAX4178/MAX4278 are capable of driving capacitive loads up to 100pF without oscillations, but with reduced AC performance Driving large capacitive loads increases the chance of oscillations in most amplifier circuits. This is especially true for circuits with high loop gains, such as voltage followers. The amplifier's output resistance and the load
RISO VIN VOUT CL RL
MAX4178 MAX4278
Figure 1. Capacitive-Load Driving Circuit
8
_______________________________________________________________________________________
330MHz, Gain of +1/Gain of +2 Closed-Loop Buffers
FREQUENCY WITH CAPACITIVE LOAD
MAX4178/4278-2a
MAX4278 SMALL SIGNAL GAIN vs. FREQUENCY WITH CAPACITIVE LOAD
21 16 11 GAIN (dB) 6 1 -4 -9 RISO = 0 CL = 100pF CL = 47pF CL = 22pF
MAX4178/4278-2b
MAX4178/MAX4278
20 15 10 5 GAIN (dB) 0 -5 -10 -15 -20 -25 -30 1M 10M 100M CL = 0pF RISO = 0 CL = 100pF CL = 47pF CL = 22pF
26
-14 -19 -24 1G 1M 10M
CL = 0pF
100M
1G
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 2a. MAX4178 Small-Signal Gain vs. Frequency with Capacitive Load
Figure 2b. MAX4278 Small-Signal Gain vs. Frequency with Capacitive Load
AND ISOLATION RESISTOR
MAX4178/4278-3a
AND ISOLATION RESISTOR
7 6 5 GAIN (dB) CL = 47pF CL = 100pF RISO = 20 CL = 22pF CL = 0pF
MAX4178/4278-3b
2 1 0 -1 GAIN (dB) -2 -3 -4 -5 -6 -7 -8 1M 10M CL = 47pF CL = 100pF RISO = 20
CL = 22pF CL = 0pF
8
4 3 2 1 0 -1 -2
100M
1G
1M
10M
100M
1G
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 3a. MAX4178 Small-Signal Gain vs. Frequency with Capacitive Load and Isolation Resistor (RISO)
Figure 3b. MAX4278 Small-Signal Gain vs. Frequency with Capacitive Load and Isolation Resistor (RISO)
_______________________________________________________________________________________
9
330MHz, Gain of +1/Gain of +2 Closed-Loop Buffers MAX4178/MAX4278
Flash ADC Preamp
The MAX4178/MAX4278's high current-drive capability makes them well suited for buffering the low-impedance input of a high-speed flash ADC. With their low output impedance, these buffers can drive the inputs of the ADC with no loss of accuracy. Figure 4 shows a preamp for digitizing video, using the 250Msps MAX100 and the 500Msps MAX101 flash ADCs. Both of these ADCs have a 50 input resistance and a 1.2GHz input bandwidth.
High-Performance Video Distribution Amplifier
The MAX4278 (AV = +2) makes an excellent driver for multiple back-terminated 75 video coaxial cables (Figure 5). The high current-output capability allows the attachment of up to six 2Vp-p, 150 loads to the MAX4278 at +25C. With the output limited to 1Vp-p, the number of loads may double. For multiple gain-of-2 video line drivers in a single package, see the MAX496/MAX497data sheet.
_Ordering Information (continued)
PART MAX4278EPA
VIDEO IN
TEMP. RANGE -40C to +85C -40C to +85C -40C to +85C -40C to +85C -55C to +125C
PINPACKAGE 8 Plastic DIP 8 SO 8 MAX 5 SOT23 8 CERDIP
SOT TOP MARK - - - ABYY -
MAX4178 MAX4278
FLASH ADC (MAX100/MAX101)
MAX4278ESA MAX4278EUA MAX4278EUK-T MAX4278MJA
Figure 4. Preamp for Video Digitizer
___________________Chip Information
TRANSISTOR COUNT: 175 SUBSTRATE CONNECTED TO VEE
75 VIDEO IN
75 OUT1 75
MAX4278
75
75 OUT2 75
75
75 OUTN 75
Figure 5. High-Performance Video Distribution Amplifier
10 ______________________________________________________________________________________
330MHz, Gain of +1/Gain of +2 Closed-Loop Buffers
________________________________________________________Package Information
PDIPN.EPS
MAX4178/MAX4278
______________________________________________________________________________________
SOICN.EPS
11
330MHz, Gain of +1/Gain of +2 Closed-Loop Buffers MAX4178/MAX4278
___________________________________________Package Information (continued)
8LUMAXD.EPS
12
______________________________________________________________________________________
SOT5L.EPS

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