_______________General Desc ription
The MAX4177/MAX4277 are wide-bandwidth, fast-settling
buffer amplifiers featuring high slew rate, high precision,
high output current, and low differential gain and phase
errors. The MAX4177 is preset for unity voltage gain
(0dB), and has a small-signal -3dB bandwidth of 380MHz.
The MAX4277 is preset for a voltage gain of +2 (6dB),
and has a small-signal -3dB bandwidth of 350MHz.
The MAX4177/MAX4277 feature the high slew rate and
low power of current-mode feedback amplifiers.
However, unlike conventional current-mode 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 of architectures results in low input
offset voltage and bias current, and high gain precision
and power-supply rejection.
The MAX4177/MAX4277 are ideally suited for driving
50
or 75
loads. They are the perfect choice for high-
speed cable-driving applications such as video routing.
In addition, the devices incorporate a shutdown mode
that can be used to disable the output in multiplexer
applications and to conserve power. The MAX4177/
MAX4277 are available in 8-pin DIP, SO and μMAX
packages.
________________________Applic ations
Broadcast and High-Definition TV Systems
Video Switching and Routing
High-Speed Cable Drivers
Communications
Medical Imaging
Precision High-Speed DAC/ADC Buffers
____________________________Features
o
High Speed:
380MHz -3dB Bandwidth (MAX4177)
350MHz -3dB Bandwidth (MAX4277)
200MHz Full-Power Bandwidth (MAX4177,
V
OUT
= 2Vp-p)
150MHz Full-Power Bandwidth (MAX4277,
V
OUT
= 2Vp-p)
150MHz 0.1dB Flatness Bandwidth (MAX4177)
120MHz 0.1dB Flatness Bandwidth (MAX4277)
o
Low Differential Gain and Phase Error: 0.01%/0.01°
o
High Slew Rate: 1800V/μs (MAX4177)
o
Low Power: 8mA Quiescent Supply Current
400μA in Shutdown Mode
o
High-Impedance Output in Shutdown Mode
o
Low Input Bias Current: 2μA
o
Low Input Offset Voltage: 0.5mV
o
Low Input-Referred Voltage Noise: 5nV
√
Hz
o
High Gain Precision: 1.5% Max with 50
Load
o
High PSRR: 75dB
M
380MHz, Gain of +1/Gain of +2
High-S peed Buffers
________________________________________________________________ Maxim Integrated Products
Call toll free 1-800-998-8800 for free samples or literature.
1
DIP/SO/
μ
MAX
TOP VIEW
OUT
INPUT
N.C.
V-
1
2
8
7
N.C.
V+
GND
SHDN
MAX4177
MAX4277
3
4
6
5
MAX4277
V
IN
75
75
V
OUT
75
GAIN OF +2 CABLE DRIVER
__________________Pin Configuration
__________Typic al Operating Circ uit
PART
MAX4177
CPA
MAX4177CSA
MAX4177CUA
0°C to +70°C
0°C to +70°C
0°C to +70°C
TEMP. RANGE
PIN-PACKAGE
8 Plastic DIP
8 SO
8 μMAX
ADVANCE INFORMATION
All information in this data sheet is preliminary
and subject to change.
6/95
______________Ordering Information
Ordering Information continued on next page.