_______________General Description
The MAX4223MAX4228 current-feedback amplifiers
combine ultra-high-speed performance, low distortion,
and excellent video specifications with low-power oper-
ation. The MAX4223/MAX4224/MAX4226/MAX4228
have a shutdown feature that reduces power-supply
current to 350A and places the outputs into a high-
impedance state. These devices operate with dual sup-
plies ranging from 2.85V to 5.5V and provide a
typical output drive current of 80mA. The MAX4223/
MAX4225/MAX4226 are optimized for a closed-loop
gain of +1 (0dB) or more and have a -3dB bandwidth of
1GHz, while the MAX4224/MAX4227/MAX4228 are
compensated for a closed-loop gain of +2 (6dB) or
more, and have a -3dB bandwidth of 600MHz (1.2GHz
gain-bandwidth product).
The MAX4223MAX4228 are ideal for professional video
applications, with differential gain and phase errors of
0.01% and 0.02, 0.1dB gain flatness of 300MHz, and a
1100V/s slew rate. Total harmonic distortion (THD) of
-60dBc (10MHz) and an 8ns settling time to 0.1% suit
these devices for driving high-speed analog-to-digital
inputs or for data-communications applications. The low-
power shutdown mode on the MAX4223/MAX4224/
MAX4226/MAX4228 makes them suitable for portable
and battery-powered applications. Their high output
impedance in shutdown mode is excellent for multiplex-
ing applications.
The single MAX4223/MAX4224 are available in space-
saving 6-pin SOT23 packages. All devices are available
in the extended -40C to +85C temperature range.
________________________Applications
ADC Input Buffers
Data Communications
Video Cameras
Video Line Drivers
Video Switches
Video Multiplexing
Video Editors
XDSL Drivers
RF Receivers
Differential Line Drivers
____________________________Features
o
Ultra-High Speed and Fast Settling Time:
1GHz -3dB Bandwidth (MAX4223, Gain = +1)
600MHz -3dB Bandwidth (MAX4224, Gain = +2)
1700V/s Slew Rate (MAX4224)
5ns Settling Time to 0.1% (MAX4224)
o
Excellent Video Specifications (MAX4223):
Gain Flatness of 0.1dB to 300MHz
0.01%/0.02 DG/DP Errors
o
Low Distortion:
-60dBc THD (f
c
= 10MHz)
42dBm Third-Order Intercept (f = 30MHz)
o
6.0mA Quiescent Supply Current (per amplifier)
o
Shutdown Mode:
350A Supply Current (per amplifier)
100k
Output Impedance
o
High Output Drive Capability:
80mA Output Current
Drives up to 4 Back-Terminated 75
Loads to
2.5V while Maintaining Excellent Differential
Gain/Phase Characteristics
o
Available in Tiny 6-Pin SOT23 and 10-Pin MAX
Packages
MAX4223MAX4228
1GHz, Low-Power, SOT23,
Current-Feedback Amplifiers with Shutdown
________________________________________________________________
Maxim Integrated Products
1
V
EE
IN-
IN+
1
6
V
CC
5
SHDN
OUT
MAX4223
MAX4224
SOT23-6
TOP VIEW
2
3
4
_________________Pin Configurations
19-1230; Rev 2a; 6/97
PART
MAX4223
EUT-T
MAX4223ESA
-40C to +85C
-40C to +85C
TEMP. RANGE
PIN-
PACKAGE
6 SOT23
8 SO
EVALUATION KIT
AVAILABLE
______________Ordering Information
_____________________Selector Guide
Pin Configurations
continued at end
of data sheet.
Ordering Information continued at end of data sheet.
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.
SOT
TOP MARK
AAAD
--
10 MAX,
14 SO
8 SO
10 MAX,
14 SO
8 SO
6 SOT23, 8 SO
6 SOT23, 8 SO
PIN-
PACKAGE
Yes
No
Yes
No
Yes
Yes
SHUT-
DOWN
MODE
2
2
2
2
1
1
AMPS
PER
PKG.
2
2
MAX4227
MAX4228
1
PART
1
MAX4225
MAX4226
2
1
MAX4223
MAX4224
MIN.
GAIN
MAX4223MAX4228
1GHz, Low-Power, SOT23,
Current-Feedback Amplifiers with Shutdown
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +5V, V
EE
= -5V, SHDN = 5V, V
CM
= 0V, R
L
=
, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25C.) (Note 1)
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.
Supply Voltage (V
CC
to V
EE
) ..................................................12V
Analog Input Voltage .......................(V
EE
- 0.3V) to (V
CC
+ 0.3V)
Analog Input Current ........................................................25mA
SHDN Input Voltage.........................(V
EE
- 0.3V) to (V
CC
+ 0.3V)
Short-Circuit Duration
OUT to GND ...........................................................Continuous
OUT to V
CC
or V
EE
............................................................5sec
Continuous Power Dissipation (T
A
= +70C)
6-Pin SOT23 (derate 7.1mW/C above +70C).............571mW
8-Pin SO (derate 5.9mW/C above +70C)...................471mW
10-Pin MAX (derate 5.6mW/C above +70C) ............444mW
14-Pin SO (derate 8.3mW/C above +70C).................667mW
Operating Temperature Range ...........................-40C to +85C
Storage Temperature Range .............................-65C to +150C
Lead Temperature (soldering, 10sec) .............................+300C
CONDITIONS
0.5
4
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
mV
0.5
5
V
OS
Input Offset Voltage
2
10
Input Bias Current
(Positive Input)
7
T
A
= T
MIN
to T
MAX
A
15
T
A
= +25C
45
R
IN-
Input Resistance (Negative Input)
k
700
R
IN+
Input Resistance (Positive Input)
55
61
Inferred from CMRR test
V
2.5
3.2
V
CM
Input Common-Mode
Voltage Range
Inferred from PSRR test
V
2.85
5.5
V
CC
/V
EE
V
CM
= 2.5V
Operating Supply Voltage
Range
68
74
dB
50
CMRR
Common-Mode Rejection Ratio
V
CC
= 2.85V to 5.5V,
V
EE
= -2.85V to -5.5V
dB
63
PSRR
Power-Supply Rejection Ratio
Shutdown mode (SHDN = 0V)
mA
0.35
0.55
R
L
= 50
I
SY
Quiescent Supply Current
(per Amplifier)
Normal mode (SHDN = 5V)
6.0
9.0
V
2.5
2.8
V
OUT
Output Voltage Swing
V
OUT
= 2.5V
M
0.3
0.8
T
R
Open-Loop Transresistance
V
OUT
= 2.5V
mA
60
80
I
OUT
Output Current (Note 2)
0.7
1.5
R
L
= short to ground
mA
140
I
SC
Short-Circuit Output Current
V
0.8
V
IL
SHDN Logic Low
4
20
T
A
= +25C
A
4
25
I
B+
T
A
= +25C
T
A
= T
MIN
to T
MAX
T
A
= +25C
T
A
= T
MIN
to T
MAX
R
L
=
R
L
= 50
V
2.0
V
IH
SHDN Logic High
6
T
A
= T
MIN
to T
MAX
MAX4223/MAX4224
MAX4223/MAX4224
MAX4225MAX4228
V/C
2
TCV
OS
Input Offset Voltage Drift
MAX4225MAX4228
T
A
= T
MIN
to T
MAX
30
Input Bias Current
(Negative Input)
35
I
B-
T
A
= +25C
MAX4223/MAX4224
MAX4225MAX4228
MAX4223/MAX4224
MAX4225MAX4228
MAX4223MAX4228
1GHz, Low-Power, SOT23,
Current-Feedback Amplifiers with Shutdown
_______________________________________________________________________________________
3
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +5V, V
EE
= -5V, SHDN = 5V, V
CM
= 0V, R
L
=
, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25C.) (Note 1)
AC ELECTRICAL CHARACTERISTICS
(V
CC
= +5V, V
EE
= -5V, SHDN = 5V, V
CM
= 0V, A
V
= +1V/V for MAX4223/MAX4225/MAX4226, A
V
= +2V/V for MAX4224/MAX4227/
MAX4228, R
L
= 100
, T
A
= +25C, unless otherwise noted.) (Note 4)
10
100
CONDITIONS
25
70
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
A
I
IL
/I
IH
SHDN Input Current
SHDN = 0V or 5V
SHDN = 0V, V
OUT
= -2.5V to +2.5V
(Note 3)
Shutdown Mode Output
Impedance
k
MAX4224/7/8
MAX4223/5/6
60
200
100
300
MAX4223/5/6
0.1
V
OUT
= 2V step
MAX4224/7/8
THD
850
1100
1.5
Total Harmonic Distortion
R
L
= 1k
1400
1700
250
-65
V
OUT
= 4V step
625
800
dB
CONDITIONS
Gain Peaking
V
OUT
= 2Vp-p
MHz
330
BW
LS
Large-Signal Bandwidth
MAX4223/4/6/8
V
OUT
= 2V step
R
L
= 100
MAX4223/5/6
MAX4223/5/6
s
2
0.02
t
ON
Turn-On Time from Shutdown
SHDN = 0V, f = 10MHz, MAX4223/4/6/8
dB
65
Off Isolation
R
L
= 150
(Note 6)
0.01
degrees
0.01
V
CC
, V
EE
= 0V to 5V step
ns
100
t
UP
MAX4223/4/6/8
Power-Up Time
R
L
= 150
(Note 6)
%
0.02
DG
Differential Gain Error
ns
300
t
OFF
Turn-Off Time to Shutdown
f = 30MHz,
R
S
= 50
MAX4225/6
-60
325
600
dBc
-61
MAX4223/5/6
750
1000
MAX4224/7/8
-78
MAX4224/7/8
DP
Differential Phase Error
MAX4224/7/8
MAX4224/7/8
MAX4223/5/6
MAX4223/5/6
Rising edge
MAX4223/5/6
V
OUT
= 2Vp-p,
f
C
= 10MHz
MAX4224/7/8
MAX4223/5/6
1.0
Falling edge
1100
1400
V/s
SR
Slew Rate (Note 5)
MAX4224/7/8
1.5
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
ns
MAX4224/7/8
t
r
, t
f
Rise and Fall Time
MAX4223/5/6
MAX4223/5/6
MAX4224/7/8
MAX4223/5/6
V
OUT
= 20mVp-p
MHz
MAX4224/7/8
BW
0.1dB
Bandwidth for 0.1dB
Gain Flatness (Note 5)
V
OUT
= 20mVp-p
-72
MAX4227/8
-68
8
dB
ns
5
X
TALK
t
S
Settling Time to 0.1%
Crosstalk
MHz
BW
-3dB Small-Signal Bandwidth
(Note 5)
MAX4224/7/8
MAX4223MAX4228
1GHz, Low-Power, SOT23,
Current-Feedback Amplifiers with Shutdown
4
_______________________________________________________________________________________
Note 1:
The MAX422_EUT is 100% production tested at T
A
= +25C. Specifications over temperature limits are guaranteed by design.
Note 2:
Absolute Maximum Power Dissipation must be observed.
Note 3:
Does not include impedance of external feedback resistor network.
Note 4:
AC specifications shown are with optimal values of R
F
and R
G
. These values vary for product and package type, and are
tabulated in the
Applications Information section of this data sheet.
Note 5:
The AC specifications shown are not measured in a production test environment. The minimum AC specifications given are
based on the combination of worst-case design simulations along with a sample characterization of units. These minimum
specifications are for design guidance only and are not intended to guarantee AC performance (see
AC Testing/
Performance). For 100% testing of these parameters, contact the factory.
Note 6:
Input Test Signal: 3.58MHz sine wave of amplitude 40IRE superimposed on a linear ramp (0IRE to 100IRE). IRE is a unit of
video signal amplitude developed by the International Radio Engineers. 140IRE = 1V.
Note 7:
Assumes printed circuit board layout similar to that of Maxim's evaluation kit.
AC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +5V, V
EE
= -5V, SHDN = 5V, V
CM
= 0V, A
V
= +1V/V for MAX4223/MAX4225/MAX4226, A
V
= +2V/V for MAX4224/MAX4227/
MAX4228, R
L
= 100
, T
A
= +25C, unless otherwise noted.) (Note 4)
__________________________________________Typical Operating Characteristics
(V
CC
= +5V, V
EE
= -5V, R
L
= 100
, T
A
= +25C, unless otherwise noted.)
4
3
-6
1
100
1000
10
MAX4223
SMALL-SIGNAL GAIN vs. FREQUENCY
(A
VCL
= +1)
-4
-5
MAX4223-01
FREQUENCY (MHz)
GAIN (dB)
-2
-3
0
-1
2
1
V
IN
= 20mVp-p
SO-8 PACKAGE
R
F
= 560
SOT23-6
R
F
= 470
4
3
-6
1
100
1000
10
MAX4223
SMALL-SIGNAL GAIN vs. FREQUENCY
(A
VCL
= +2/+5)
-4
-5
MAX4223-02
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
-2
-3
0
-1
2
1
V
IN
= 20mVp-p
A
V
= +2V/V
R
F
= R
G
= 200
A
V
= +5V/V
R
F
= 100
R
G
= 25
4
3
-6
1
100
1000
10
MAX4223/MAX4225/MAX4226
LARGE-SIGNAL GAIN vs. FREQUENCY
(A
VCL
= +1)
-4
-5
MAX4223-03
FREQUENCY (MHz)
GAIN (dB)
-2
-3
0
-1
2
1
A
V
= +1V/V
R
F
= 560
V
OUT
= 2Vp-p
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Input Capacitance (Note 7)
C
IN
0.8
42
Third-Order Intercept
IP3
36
1.0
dBm
SO-8, SO-14
packages
f = 30kHz
fz = 30.1MHz
SOT23-6, 10-pin MAX
packages
0.3
0.3
CONDITIONS
2
Output Impedance
Z
OUT
20
1dB Gain Compression
2
dBm
f = 10kHz
f = 10kHz
3
Input Noise Current Density
i
n
+, i
n
-
20
pA/
Hz
f = 10kHz
Input Noise Voltage Density
pF
e
n
nV/
Hz
f = 10kHz
MAX4223/5/6
MAX4224/7/8
-61
Spurious-Free Dynamic Range
SFDR
-62
dB
f = 10kHz
MAX4223/5/6
MAX4224/7/8
IN+
IN-
Pin to pin
Pin to GND
Pin to pin
Pin to GND
MAX4223MAX4228
1GHz, Low-Power, SOT23,
Current-Feedback Amplifiers with Shutdown
_______________________________________________________________________________________
5
4
3
-6
1
100
1000
10
MAX4224
SMALL-SIGNAL GAIN vs. FREQUENCY
(A
VCL
= +2)
-4
-5
MAX4223-04
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
-2
-3
0
-1
2
1
V
IN
= 20mVp-p
SO-8 PACKAGE
R
F
= R
G
= 470
SOT23-6 PACKAGE
R
F
= R
G
= 470
4
3
-6
1
100
1000
10
MAX4224
SMALL-SIGNAL GAIN vs. FREQUENCY
(A
VCL
= +5/+10)
-4
-5
MAX4223-05
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
-2
-3
0
-1
2
1
V
IN
= 20mVp-p
A
VCL
= +5V/V
R
F
= 240
R
G
= 62
A
VCL
= +10V/V
R
F
= 130
R
G
= 15
4
3
-6
1
100
1000
10
MAX4224/MAX4227/MAX4228
LARGE-SIGNAL GAIN vs. FREQUENCY
(A
VCL
= +2)
-4
-5
MAX4223-06
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
-2
-3
0
-1
2
1
A
VCL
= +2V/V
R
F
= R
G
= 470
V
OUT
= 2Vp-p
4
3
-6
1
100
1000
10
MAX4225/MAX4226
SMALL-SIGNAL GAIN vs. FREQUENCY
(A
VCL
= +1)
-4
-5
MAX4223-07
FREQUENCY (MHz)
GAIN (dB)
-2
-3
0
-1
2
1
V
IN
= 20mVp-p
A
VCL
= +1V/V
R
F
= 560
0.4
0.3
-0.6
0.1
10
100
1
MAX4227/MAX4228
GAIN MATCHING vs. FREQUENCY
(A
VCL
= +2)
-0.4
-0.5
MAX4223-10
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
-0.2
-0.3
0
-0.1
0.2
0.1
V
IN
= 20mVp-p
A
VCL
= +2V/V
R
F
= R
G
= 470
10
100
MAX4225/MAX4226
GAIN MATCHING vs. FREQUENCY
(A
VCL
= +1)
MAX4223-08
FREQUENCY (MHz)
GAIN (dB)
1
AMPLIFIER A
0.4
0.3
-0.6
-0.4
-0.5
-0.2
-0.3
0
-0.1
0.2
0.1
V
IN
= 2OmVp-p
A
VCL
= +1V/V
R
F
= 560
AMPLIFIER B
0
-10
-100
1
100
1000
10
MAX4225/MAX4226
CROSSTALK vs. FREQUENCY
-80
-90
MAX4223-11
FREQUENCY (MHz)
CROSSTALK (dB)
-60
-70
-40
-50
-20
-30
R
S
= 50
V
OUT
= 2Vp-p
0
-10
-100
1
100
1000
10
MAX4227/MAX4228
CROSSTALK vs. FREQUENCY
-80
-90
MAX4223-12
FREQUENCY (MHz)
CROSSTALK (dB)
-60
-70
-40
-50
-20
-30
R
S
= 50
V
OUT
= 2Vp-p
____________________________Typical Operating Characteristics (continued)
(V
CC
= +5V, V
EE
= -5V, R
L
= 100
, T
A
= +25C, unless otherwise noted.)
4
3
-6
1
100
1000
10
MAX4227/MAX4228
SMALL-SIGNAL GAIN vs. FREQUENCY
(A
VCL
= +2)
-4
-5
MAX4223-09
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
-2
-3
0
-1
2
1
V
IN
= 20mVp-p
A
VCL
= +2V/V
R
F
= R
G
= 470
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