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19-1230; Rev 2a; 6/97
EVAALVUAAILTAIOBNLEKIT
1GHz, Low-Power, SOT23,
Current-Feedback Amplifiers with Shutdown
_______________General Description
The MAX4223–MAX4228 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 350µA 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 MAX4223–MAX4228 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/µs 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 -40°C to +85°C 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
_________________Pin Configurations
TOP VIEW
OUT 1
6 VCC
VEE 2
5 SHDN
IN+ 3
Pin Configurations
continued at end
of data sheet.
SOT23-6
4 IN-
MAX4223
MAX4224
____________________________Features
o Ultra-High Speed and Fast Settling Time:
1GHz -3dB Bandwidth (MAX4223, Gain = +1)
600MHz -3dB Bandwidth (MAX4224, Gain = +2)
1700V/µs 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 (fc = 10MHz)
42dBm Third-Order Intercept (f = 30MHz)
o 6.0mA Quiescent Supply Current (per amplifier)
o Shutdown Mode:
350µA Supply Current (per amplifier)
100kOutput Impedance
o High Output Drive Capability:
80mA Output Current
Drives up to 4 Back-Terminated 75Loads to
±2.5V while Maintaining Excellent Differential
Gain/Phase Characteristics
o Available in Tiny 6-Pin SOT23 and 10-Pin µMAX
Packages
______________Ordering Information
PART
TEMP. RANGE
PIN-
PACKAGE
SOT
TOP MARK
MAX4223EUT-T -40°C to +85°C 6 SOT23
MAX4223ESA -40°C to +85°C 8 SO
AAAD
Ordering Information continued at end of data sheet.
_____________________Selector Guide
PART
MAX4223
MAX4224
MAX4225
MAX4226
MAX4227
MAX4228
MIN.
GAIN
1
2
1
1
2
2
AMPS
PER
PKG.
1
1
2
2
2
2
SHUT-
DOWN
MODE
Yes
Yes
No
Yes
No
Yes
PIN-
PACKAGE
6 SOT23, 8 SO
6 SOT23, 8 SO
8 SO
10 µMAX,
14 SO
8 SO
10 µMAX,
14 SO
________________________________________________________________ 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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1GHz, Low-Power, SOT23,
Current-Feedback Amplifiers with Shutdown
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC to VEE) ..................................................12V
Analog Input Voltage .......................(VEE - 0.3V) to (VCC + 0.3V)
Analog Input Current ........................................................±25mA
SHDN Input Voltage.........................(VEE - 0.3V) to (VCC + 0.3V)
Short-Circuit Duration
OUT to GND ...........................................................Continuous
OUT to VCC or VEE............................................................5sec
Continuous Power Dissipation (TA = +70°C)
6-Pin SOT23 (derate 7.1mW/°C above +70°C).............571mW
8-Pin SO (derate 5.9mW/°C above +70°C)...................471mW
10-Pin µMAX (derate 5.6mW/°C above +70°C) ............444mW
14-Pin SO (derate 8.3mW/°C above +70°C).................667mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
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, SHDN = 5V, VCM = 0V, RL = , TA = TMIN to TMAX, unless otherwise noted. Typical values are at
TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Input Offset Voltage
TA = +25°C
VOS
TA = TMIN to TMAX
MAX4223/MAX4224
MAX4225–MAX4228
MAX4223/MAX4224
MAX4225–MAX4228
±0.5
±0.5
±4
±5
±6
±7
mV
Input Offset Voltage Drift
Input Bias Current
(Positive Input)
Input Bias Current
(Negative Input)
TCVOS
IB+
IB-
TA = +25°C
TA = TMIN to TMAX
TA = +25°C
TA = TMIN to TMAX
MAX4223/MAX4224
MAX4225–MAX4228
MAX4223/MAX4224
MAX4225–MAX4228
±2 µV/°C
±2 ±10
µA
±15
±4 ±20
±4 ±25
µA
±30
±35
Input Resistance (Positive Input)
Input Resistance (Negative Input)
RIN+
RIN-
700 k
45
Input Common-Mode
Voltage Range
VCM Inferred from CMRR test
±2.5 ±3.2
V
Common-Mode Rejection Ratio CMRR VCM = ±2.5V
TA = +25°C
TA = TMIN to TMAX
55 61
50
dB
Operating Supply Voltage
Range
VCC/VEE Inferred from PSRR test
±2.85
±5.5
V
Power-Supply Rejection Ratio
Quiescent Supply Current
(per Amplifier)
Open-Loop Transresistance
Output Voltage Swing
Output Current (Note 2)
Short-Circuit Output Current
SHDN Logic Low
SHDN Logic High
PSRR
ISY
TR
VOUT
IOUT
ISC
VIL
VIH
VCC = 2.85V to 5.5V,
VEE = -2.85V to -5.5V
TA = +25°C
TA = TMIN to TMAX
Normal mode (SHDN = 5V)
Shutdown mode (SHDN = 0V)
VOUT = ±2.5V
RL =
RL = 50
RL = 50
VOUT = ±2.5V
RL = short to ground
68
63
0.7
0.3
±2.5
60
74
6.0
0.35
1.5
0.8
±2.8
80
140
2.0
9.0
0.55
0.8
dB
mA
M
V
mA
mA
V
V
2 _______________________________________________________________________________________

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1GHz, Low-Power, SOT23,
Current-Feedback Amplifiers with Shutdown
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC = +5V, VEE = -5V, SHDN = 5V, VCM = 0V, RL = , TA = TMIN to TMAX, unless otherwise noted. Typical values are at
TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
SHDN Input Current
IIL/IIH SHDN = 0V or 5V
25 70 µA
Shutdown Mode Output
Impedance
SHDN = 0V, VOUT = -2.5V to +2.5V
(Note 3)
10 100
k
AC ELECTRICAL CHARACTERISTICS
(VCC = +5V, VEE = -5V, SHDN = 5V, VCM = 0V, AV = +1V/V for MAX4223/MAX4225/MAX4226, AV = +2V/V for MAX4224/MAX4227/
MAX4228, RL = 100, TA = +25°C, unless otherwise noted.) (Note 4)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
-3dB Small-Signal Bandwidth
(Note 5)
Bandwidth for ±0.1dB
Gain Flatness (Note 5)
Gain Peaking
Large-Signal Bandwidth
Slew Rate (Note 5)
Settling Time to 0.1%
Rise and Fall Time
Off Isolation
Crosstalk
Turn-On Time from Shutdown
Turn-Off Time to Shutdown
Power-Up Time
Differential Gain Error
Differential Phase Error
Total Harmonic Distortion
BW
BW0.1dB
BWLS
SR
tS
tr, tf
XTALK
tON
tOFF
tUP
DG
DP
THD
VOUT = 20mVp-p
MAX4223/5/6
MAX4224/7/8
VOUT = 20mVp-p
MAX4223/5/6
MAX4224/7/8
MAX4223/5/6
MAX4224/7/8
VOUT = 2Vp-p
MAX4223/5/6
MAX4224/7/8
VOUT = 4V step
Rising edge
Falling edge
MAX4223/5/6
MAX4224/7/8
MAX4223/5/6
MAX4224/7/8
VOUT = 2V step
MAX4223/5/6
MAX4224/7/8
VOUT = 2V step
MAX4223/5/6
MAX4224/7/8
SHDN = 0V, f = 10MHz, MAX4223/4/6/8
f = 30MHz,
RS = 50
MAX4225/6
MAX4227/8
MAX4223/4/6/8
MAX4223/4/6/8
VCC, VEE = 0V to ±5V step
RL = 150(Note 6)
MAX4223/5/6
MAX4224/7/8
RL = 150(Note 6)
MAX4223/5/6
MAX4224/7/8
VOUT = 2Vp-p,
fC = 10MHz
RL = 100
RL = 1k
MAX4223/5/6
MAX4224/7/8
MAX4223/5/6
MAX4224/7/8
750
325
100
60
850
1400
625
1100
1000
600
300
200
1.5
0.1
250
330
1100
1700
800
1400
8
5
1.5
1.0
65
-68
-72
2
300
100
0.01
0.02
0.02
0.01
-60
-61
-65
-78
MHz
MHz
dB
MHz
V/µs
ns
ns
dB
dB
µs
ns
ns
%
degrees
dBc
_______________________________________________________________________________________ 3

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1GHz, Low-Power, SOT23,
Current-Feedback Amplifiers with Shutdown
AC ELECTRICAL CHARACTERISTICS (continued)
(VCC = +5V, VEE = -5V, SHDN = 5V, VCM = 0V, AV = +1V/V for MAX4223/MAX4225/MAX4226, AV = +2V/V for MAX4224/MAX4227/
MAX4228, RL = 100, TA = +25°C, unless otherwise noted.) (Note 4)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Output Impedance
ZOUT f = 10kHz
2
Third-Order Intercept
IP3
f = 30kHz
fz = 30.1MHz
MAX4223/5/6
MAX4224/7/8
42
dBm
36
Spurious-Free Dynamic Range SFDR f = 10kHz
MAX4223/5/6
MAX4224/7/8
-61
dB
-62
1dB Gain Compression
f = 10kHz
20 dBm
Input Noise Voltage Density
en f = 10kHz
2 nV/Hz
Input Noise Current Density
in+, in- f = 10kHz
IN+
IN-
3 pA/Hz
20
Input Capacitance (Note 7)
SO-8, SO-14
packages
CIN
SOT23-6, 10-pin µMAX
packages
Pin to pin
Pin to GND
Pin to pin
Pin to GND
0.3
1.0
pF
0.3
0.8
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
The MAX422_EUT is 100% production tested at TA = +25°C. Specifications over temperature limits are guaranteed by design.
Absolute Maximum Power Dissipation must be observed.
Does not include impedance of external feedback resistor network.
AC specifications shown are with optimal values of RF and RG. These values vary for product and package type, and are
tabulated in the Applications Information section of this data sheet.
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.
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.
Assumes printed circuit board layout similar to that of Maxim’s evaluation kit.
__________________________________________Typical Operating Characteristics
(VCC = +5V, VEE = -5V, RL = 100, TA = +25°C, unless otherwise noted.)
MAX4223
SMALL-SIGNAL GAIN vs. FREQUENCY
(AVCL = +1)
4
VIN = 20mVp-p
3
SO-8 PACKAGE
2 RF = 560
1
0
-1
SOT23-6
-2 RF = 470
-3
-4
-5
-6
1
10 100
FREQUENCY (MHz)
1000
MAX4223
SMALL-SIGNAL GAIN vs. FREQUENCY
(AVCL = +2/+5)
4
VIN = 20mVp-p
3
2 AV = +2V/V
1 RF = RG = 200
0
-1
-2 AV = +5V/V
-3
RF = 100
RG = 25
-4
-5
-6
1
10 100
FREQUENCY (MHz)
1000
MAX4223/MAX4225/MAX4226
LARGE-SIGNAL GAIN vs. FREQUENCY
(AVCL = +1)
4
3 AV = +1V/V
RF = 560
2 VOUT = 2Vp-p
1
0
-1
-2
-3
-4
-5
-6
1
10 100
FREQUENCY (MHz)
1000
4 _______________________________________________________________________________________

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1GHz, Low-Power, SOT23,
Current-Feedback Amplifiers with Shutdown
____________________________Typical Operating Characteristics (continued)
(VCC = +5V, VEE = -5V, RL = 100, TA = +25°C, unless otherwise noted.)
MAX4224
SMALL-SIGNAL GAIN vs. FREQUENCY
(AVCL = +2)
4
VIN = 20mVp-p
3
2
1
0
-1
-2
-3
-4
-5
-6
1
SO-8 PACKAGE
RF = RG = 470
SOT23-6 PACKAGE
RF = RG = 470
10 100
FREQUENCY (MHz)
1000
MAX4224
SMALL-SIGNAL GAIN vs. FREQUENCY
(AVCL = +5/+10)
4
3 VIN = 20mVp-p
2
AVCL = +5V/V
RF = 240
1 RG = 62
0
-1
-2 AVCL = +10V/V
-3
RF = 130
RG = 15
-4
-5
-6
1
10 100
FREQUENCY (MHz)
1000
MAX4224/MAX4227/MAX4228
LARGE-SIGNAL GAIN vs. FREQUENCY
(AVCL = +2)
4
3
AVCL = +2V/V
RF = RG = 470
2 VOUT = 2Vp-p
1
0
-1
-2
-3
-4
-5
-6
1
10 100
FREQUENCY (MHz)
1000
MAX4225/MAX4226
SMALL-SIGNAL GAIN vs. FREQUENCY
(AVCL = +1)
4
3
VIN = 20mVp-p
AVCL = +1V/V
2 RF = 560
1
0
-1
-2
-3
-4
-5
-6
1
10 100
FREQUENCY (MHz)
1000
MAX4227/MAX4228
GAIN MATCHING vs. FREQUENCY
(AVCL = +2)
0.4
0.3
VIN = 20mVp-p
AVCL = +2V/V
0.2 RF = RG = 470
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
0.1
1 10
FREQUENCY (MHz)
100
MAX4225/MAX4226
GAIN MATCHING vs. FREQUENCY
(AVCL = +1)
0.4
0.3 VIN = 2OmVp-p
AVCL = +1V/V
0.2 RF = 560
AMPLIFIER A
0.1
0
-0.1
-0.2
AMPLIFIER B
-0.3
-0.4
-0.5
-0.6
1
10 100
FREQUENCY (MHz)
MAX4225/MAX4226
CROSSTALK vs. FREQUENCY
0
-10
RS = 50
VOUT = 2Vp-p
-20
-30
-40
-50
-60
-70
-80
-90
-100
1
10 100
FREQUENCY (MHz)
1000
MAX4227/MAX4228
SMALL-SIGNAL GAIN vs. FREQUENCY
(AVCL = +2)
4
3
VIN = 20mVp-p
AVCL = +2V/V
2 RF = RG = 470
1
0
-1
-2
-3
-4
-5
-6
1
10 100
FREQUENCY (MHz)
1000
MAX4227/MAX4228
CROSSTALK vs. FREQUENCY
0
-10
RS = 50
VOUT = 2Vp-p
-20
-30
-40
-50
-60
-70
-80
-90
-100
1
10 100
FREQUENCY (MHz)
1000
_______________________________________________________________________________________ 5