19-1230; Rev 2a; 6/97
KIT
ATION
EVALU
BLE
AVAILA
1GHz, Low-Power, SOT23,
Current-Feedback Amplifiers with Shutdown
____________________________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 (f
c
= 10MHz)
42dBm Third-Order Intercept (f = 30MHz)
o
6.0mA Quiescent Supply Current (per amplifier)
o
Shutdown Mode:
350µA Supply Current (per amplifier)
100kΩ Output Impedance
o
High Output Drive Capability:
80mA Output Current
Drives up to 4 Back-Terminated 75Ω Loads to
±2.5V while Maintaining Excellent Differential
Gain/Phase Characteristics
o
Available in Tiny 6-Pin SOT23 and 10-Pin µMAX
Packages
_______________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.
MAX4223–MAX4228
______________Ordering Information
PART
TEMP. RANGE
PIN-
PACKAGE
6 SOT23
8 SO
SOT
TOP MARK
AAAD
—
________________________Applications
ADC Input Buffers
Video Cameras
Video Switches
Video Editors
RF Receivers
Data Communications
Video Line Drivers
Video Multiplexing
XDSL Drivers
Differential Line Drivers
MAX4223EUT-T
-40°C to +85°C
MAX4223ESA
-40°C to +85°C
Ordering Information continued at end of data sheet.
_____________________Selector Guide
PART
MAX4223
MAX4224
MAX4225
MAX4226
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
1
_________________Pin Configurations
TOP VIEW
OUT
1
6
V
CC
V
EE
2
5
SHDN
IN+
3
4
IN-
Pin Configurations
continued at end
of data sheet.
MAX4227
SOT23-6
MAX4223
MAX4224
MAX4228
________________________________________________________________
Maxim Integrated Products
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.
1GHz, Low-Power, SOT23,
Current-Feedback Amplifiers with Shutdown
MAX4223–MAX4228
ABSOLUTE MAXIMUM RATINGS
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
= +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
(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
= +25°C.) (Note 1)
PARAMETER
SYMBOL
T
A
= +25°C
Input Offset Voltage
V
OS
T
A
= T
MIN
to T
MAX
Input Offset Voltage Drift
Input Bias Current
(Positive Input)
Input Bias Current
(Negative Input)
Input Resistance (Positive Input)
Input Resistance (Negative Input)
Input Common-Mode
Voltage Range
Common-Mode Rejection Ratio
Operating Supply Voltage
Range
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
2
TCV
OS
I
B+
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
I
B-
T
A
= T
MIN
to T
MAX
R
IN+
R
IN-
V
CM
CMRR
V
CC
/V
EE
PSRR
I
SY
T
R
V
OUT
I
OUT
I
SC
V
IL
V
IH
2.0
Inferred from CMRR test
V
CM
= ±2.5V
Inferred from PSRR test
V
CC
= 2.85V to 5.5V,
V
EE
= -2.85V to -5.5V
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
±2.5
55
50
±2.85
68
63
6.0
0.35
0.7
0.3
±2.5
60
1.5
0.8
±2.8
80
140
0.8
9.0
0.55
74
±5.5
MAX4223/MAX4224
MAX4225–MAX4228
MAX4223/MAX4224
MAX4225–MAX4228
700
45
±3.2
61
±4
±4
CONDITIONS
MAX4223/MAX4224
MAX4225–MAX4228
MAX4223/MAX4224
MAX4225–MAX4228
±2
±2
±10
±15
±20
±25
±30
±35
kΩ
Ω
V
dB
V
dB
mA
MΩ
V
mA
mA
V
V
µA
MIN
TYP
±0.5
±0.5
MAX
±4
±5
±6
±7
µV/°C
µA
mV
UNITS
Normal mode (SHDN = 5V)
Shutdown mode (SHDN = 0V)
R
L
=
∞
V
OUT
= ±2.5V
R
L
= 50Ω
R
L
= 50Ω
V
OUT
= ±2.5V
R
L
= short to ground
_______________________________________________________________________________________
1GHz, Low-Power, SOT23,
Current-Feedback Amplifiers with Shutdown
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
= +25°C.) (Note 1)
PARAMETER
SHDN
Input Current
Shutdown Mode Output
Impedance
SYMBOL
I
IL
/I
IH
CONDITIONS
SHDN
= 0V or 5V
SHDN
= 0V, V
OUT
= -2.5V to +2.5V
(Note 3)
10
MIN
TYP
25
100
MAX
70
UNITS
µA
kΩ
MAX4223–MAX4228
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
= 100Ω, T
A
= +25°C, unless otherwise noted.) (Note 4)
PARAMETER
-3dB Small-Signal Bandwidth
(Note 5)
Bandwidth for ±0.1dB
Gain Flatness (Note 5)
Gain Peaking
Large-Signal Bandwidth
BW
LS
SYMBOL
BW
BW
0.1dB
CONDITIONS
V
OUT
= 20mVp-p
V
OUT
= 20mVp-p
MAX4223/5/6
MAX4224/7/8
V
OUT
= 2Vp-p
Rising edge
Slew Rate (Note 5)
SR
V
OUT
= 4V step
Falling edge
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
X
TALK
t
ON
t
OFF
t
UP
DG
DP
t
S
t
r
, t
f
V
OUT
= 2V step
V
OUT
= 2V step
MAX4223/5/6
MAX4224/7/8
MAX4223/5/6
MAX4224/7/8
MAX4223/5/6
MAX4224/7/8
MAX4223/5/6
MAX4224/7/8
MAX4223/5/6
MAX4224/7/8
MAX4225/6
MAX4227/8
850
1400
625
1100
MAX4223/5/6
MAX4224/7/8
MAX4223/5/6
MAX4224/7/8
MIN
750
325
100
60
TYP
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
MAX4223/5/6
MAX4224/7/8
MAX4223/5/6
MAX4224/7/8
MAX4223/5/6
MAX4224/7/8
MAX4223/5/6
MAX4224/7/8
0.01
0.02
0.02
0.01
-60
-61
-65
-78
dBc
ns
ns
dB
dB
µs
ns
ns
%
degrees
V/µs
MAX
UNITS
MHz
MHz
dB
MHz
SHDN
= 0V, f = 10MHz, MAX4223/4/6/8
f = 30MHz,
R
S
= 50Ω
MAX4223/4/6/8
MAX4223/4/6/8
V
CC
, V
EE
= 0V to ±5V step
R
L
= 150Ω (Note 6)
R
L
= 150Ω (Note 6)
R
L
= 100Ω
R
L
= 1kΩ
Total Harmonic Distortion
THD
V
OUT
= 2Vp-p,
f
C
= 10MHz
_______________________________________________________________________________________
3
1GHz, Low-Power, SOT23,
Current-Feedback Amplifiers with Shutdown
MAX4223–MAX4228
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
= 100Ω, T
A
= +25°C, unless otherwise noted.) (Note 4)
PARAMETER
Output Impedance
Third-Order Intercept
Spurious-Free Dynamic Range
1dB Gain Compression
Input Noise Voltage Density
Input Noise Current Density
e
n
i
n
+, i
n
-
SYMBOL
Z
OUT
IP3
SFDR
f = 10kHz
f = 30kHz
fz = 30.1MHz
f = 10kHz
f = 10kHz
f = 10kHz
f = 10kHz
SO-8, SO-14
packages
SOT23-6, 10-pin µMAX
packages
IN+
IN-
Pin to pin
Pin to GND
Pin to pin
Pin to GND
MAX4223/5/6
MAX4224/7/8
MAX4223/5/6
MAX4224/7/8
CONDITIONS
MIN
TYP
2
42
36
-61
-62
20
2
3
20
0.3
1.0
0.3
0.8
pF
MAX
UNITS
Ω
dBm
dB
dBm
nV/√Hz
pA/√Hz
Input Capacitance (Note 7)
C
IN
Note 1:
Note 2:
Note 3:
Note 4:
The MAX422_EUT is 100% production tested at T
A
= +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 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.
__________________________________________Typical Operating Characteristics
(V
CC
= +5V, V
EE
= -5V, R
L
= 100Ω, T
A
= +25°C, unless otherwise noted.)
MAX4223
SMALL-SIGNAL GAIN vs. FREQUENCY
(A
VCL
= +1)
MAX4223-01
MAX4223
SMALL-SIGNAL GAIN vs. FREQUENCY
(A
VCL
= +2/+5)
MAX4223-02
MAX4223/MAX4225/MAX4226
LARGE-SIGNAL GAIN vs. FREQUENCY
(A
VCL
= +1)
3
2
1
GAIN (dB)
0
-1
-2
-3
-4
-5
-6
A
V
= +1V/V
R
F
= 560Ω
V
OUT
= 2Vp-p
MAX4223-03
4
3
2
1
GAIN (dB)
0
-1
-2
-3
-4
-5
-6
1
10
100
FREQUENCY (MHz)
1000
SOT23-6
R
F
= 470Ω
V
IN
= 20mVp-p
SO-8 PACKAGE
R
F
= 560Ω
4
3
2
NORMALIZED GAIN (dB)
1
0
-1
-2
-3
-4
-5
-6
1
10
100
FREQUENCY (MHz)
1000
A
V
= +5V/V
R
F
= 100Ω
R
G
= 25Ω
V
IN
= 20mVp-p
A
V
= +2V/V
R
F
= R
G
= 200Ω
4
1
10
100
FREQUENCY (MHz)
1000
4
_______________________________________________________________________________________
1GHz, Low-Power, SOT23,
Current-Feedback Amplifiers with Shutdown
____________________________Typical Operating Characteristics (continued)
(V
CC
= +5V, V
EE
= -5V, R
L
= 100Ω, T
A
= +25°C, unless otherwise noted.)
MAX4224
SMALL-SIGNAL GAIN vs. FREQUENCY
(A
VCL
= +2)
MAX4223-04
MAX4223–MAX4228
MAX4224
SMALL-SIGNAL GAIN vs. FREQUENCY
(A
VCL
= +5/+10)
MAX4223-05
MAX4224/MAX4227/MAX4228
LARGE-SIGNAL GAIN vs. FREQUENCY
(A
VCL
= +2)
3
2
NORMALIZED GAIN (dB)
1
0
-1
-2
-3
-4
-5
-6
A
VCL
= +2V/V
R
F
= R
G
= 470Ω
V
OUT
= 2Vp-p
MAX4223-06
4
3
2
NORMALIZED GAIN (dB)
1
0
-1
-2
-3
-4
-5
-6
1
10
100
FREQUENCY (MHz)
1000
SO-8 PACKAGE
R
F
= R
G
= 470Ω
SOT23-6 PACKAGE
R
F
= R
G
= 470Ω
V
IN
= 20mVp-p
4
3
2
NORMALIZED GAIN (dB)
1
0
-1
-2
-3
-4
-5
-6
1
10
100
FREQUENCY (MHz)
1000
A
VCL
= +10V/V
R
F
= 130Ω
R
G
= 15Ω
V
IN
= 20mVp-p
A
VCL
= +5V/V
R
F
= 240Ω
R
G
= 62Ω
4
1
10
100
FREQUENCY (MHz)
1000
MAX4225/MAX4226
SMALL-SIGNAL GAIN vs. FREQUENCY
(A
VCL
= +1)
MAX4223-07
MAX4225/MAX4226
GAIN MATCHING vs. FREQUENCY
(A
VCL
= +1)
MAX4223-08
MAX4227/MAX4228
SMALL-SIGNAL GAIN vs. FREQUENCY
(A
VCL
= +2)
3
2
NORMALIZED GAIN (dB)
1
0
-1
-2
-3
-4
-5
-6
V
IN
= 20mVp-p
A
VCL
= +2V/V
R
F
= R
G
= 470Ω
MAX4223-09
4
3
2
1
GAIN (dB)
V
IN
= 20mVp-p
A
VCL
= +1V/V
R
F
= 560Ω
0.4
0.3
0.2
0.1
GAIN (dB)
0
-0.1
-0.2
-0.3
-0.4
-0.5
AMPLIFIER B
V
IN
= 2OmVp-p
A
VCL
= +1V/V
R
F
= 560Ω
AMPLIFIER A
4
0
-1
-2
-3
-4
-5
-6
1
10
100
FREQUENCY (MHz)
1000
-0.6
1
10
FREQUENCY (MHz)
100
1
10
100
FREQUENCY (MHz)
1000
MAX4227/MAX4228
GAIN MATCHING vs. FREQUENCY
(A
VCL
= +2)
MAX4223-10
MAX4225/MAX4226
CROSSTALK vs. FREQUENCY
MAX4223-11
MAX4227/MAX4228
CROSSTALK vs. FREQUENCY
-10
-20
CROSSTALK (dB)
-30
-40
-50
-60
-70
-80
-90
-100
R
S
= 50Ω
V
OUT
= 2Vp-p
MAX4223-12
0.4
0.3
0.2
NORMALIZED GAIN (dB)
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
0.1
1
10
FREQUENCY (MHz)
100
V
IN
= 20mVp-p
A
VCL
= +2V/V
R
F
= R
G
= 470Ω
0
-10
-20
CROSSTALK (dB)
-30
-40
-50
-60
-70
-80
-90
-100
1
10
100
FREQUENCY (MHz)
1000
R
S
= 50Ω
V
OUT
= 2Vp-p
0
1
10
100
FREQUENCY (MHz)
1000
_______________________________________________________________________________________
5
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