19-0468; Rev 1; 5/97
3 3 0 MHz, Ga in o f +1 /Ga in o f +2
Clo s e d -Lo o p Bu ffe rs
1/MAX4278
_______________Ge n e ra l De s c rip t io n
____________________________Fe a t u re s
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 differen-
tial 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.
♦ High Speed:
330MHz -3dB Bandwidth (MAX4178)
310MHz -3dB Bandwidth (MAX4278)
250MHz Full-Power Bandwidth (V
150MHz 0.1dB Flatness Bandwidth
1300V/µs Slew Rate (MAX4178)
1600V/µs Slew Rate (MAX4278)
= 2Vp-p)
OUT
The MAX4178/MAX4278 feature the high slew rate and
low power that are characteristic of current-mode feed-
back amplifiers. However, unlike conventional current-
mod e fe e d b a c k a mp lifie rs , the s e d e vic e s ha ve a
unique input stage that combines the benefits of cur-
rent-feedback topology with those of the traditional volt-
age-feedback topology. This combination results in low
input offset voltage and bias current, low noise, and
high gain precision and power-supply rejection.
♦ Low Differential Phase/Gain Error: 0.01°/0.04%
♦ 8mA Supply Current
♦ 1µA Input Bias Current
♦ 0.5mV Input Offset Voltage
Hz Input-Referred Voltage Noise
♦ 5nV/
√
♦ 2pA/ Hz Input-Referred Current Noise
√
♦ 1.0% Max Gain Error with 100Ω Load
♦ Short-Circuit Protected
The MAX4178/MAX4278 are ideally suited for driving
50Ω or 75Ω loads. They are the perfect choice for high-
speed cable-driving applications, such as video routing.
The MAX4178/MAX4278 are available in DIP, SO, and
space-saving µMAX and SOT23 packages.
♦ 8000V ESD Protection
♦ Available in Space-Saving SOT23 Package
________________________Ap p lic a t io n s
Broadcast and High-Definition TV Systems
Video Switching and Routing
______________Ord e rin g In fo rm a t io n
PIN-
SOT
PART
TEMP. RANGE
PACKAGE TOP MARK
High-Speed Cable Drivers
MAX4178EPA
MAX4178ESA
MAX4178EUA
-40°C to +85°C 8 Plastic DIP
-40°C to +85°C 8 SO
–
Communications
–
Medical Imaging
-40°C to +85°C 8 µMAX
–
ABYX
–
Precision High-Speed DAC/ADC Buffers
MAX4178EUK-T -40°C to +85°C 5 SOT23
MAX4178MJA -55°C to +125°C 8 CERDIP
Ordering Information continued at end of data sheet.
_________________P in Co n fig u ra t io n s
__________Typ ic a l Op e ra t in g Circ u it
TOP VIEW
1
2
3
4
8
7
6
5
N.C.
OUT
1
2
3
5
4
V
N.C.
GND
IN
75Ω
CC
V
OUT
V
IN
V
CC
MAX4278
MAX4178
MAX4278
MAX4178
MAX4278
V
EE
OUT
N.C.
75Ω
75Ω
V
EE
IN
GND
VIDEO/RF CABLE DRIVER
DIP/SO/µMAX
SOT23-5
________________________________________________________________ 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.
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