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General Description
The MAX4265MAX4270 single-supply, voltage-feedback
op amps are capable of driving a 100
load while main-
taining ultra-low distortion over a wide bandwidth. They
offer superior spurious-free dynamic range (SFDR) perfor-
mance: -90dBc or better at frequencies below 5MHz and
-60dBc at a 100MHz frequency. Additionally, input voltage
noise density is 8nV/
Hz while operating from a single
+4.5V to +8.0V supply or from dual 2.25V to 4.0V sup-
plies. These features make the MAX4265MAX4270 ideal
for use in high-performance communications and signal-
processing applications that require low distortion and
wide bandwidth.
The MAX4265 single and MAX4268 dual unity-gain-stable
amplifiers have up to a 300MHz gain-bandwidth product.
The MAX4266 single and MAX4269 dual amplifiers have
up to a 350MHz bandwidth at a minimum stable gain of
+2V/V. The MAX4267 single and MAX4270 dual amplifiers
have a 200MHz bandwidth at a minimum stable gain of
+5V/V.
For additional power savings, these amplifiers feature a
low-power disable mode that reduces supply current to
1.6mA and places the outputs in a high-impedance state.
The MAX4265/MAX4266/MAX4267 are available in a
space-saving 8-pin MAX package, and the MAX4268/
MAX4269/MAX4270 are available in a 16-pin QSOP pack-
age.
Applications
Base-Station Amplifiers
IF Amplifiers
High-Frequency ADC Drivers
High-Speed DAC Buffers
RF Telecom Applications
High-Frequency Signal Processing
Features
o +4.5V to +8.0V Single-Supply Operation
o Superior SFDR with 100 Load
-90dBc (f
C
= 5MHz )
-60dBc (f
C
= 100MHz)
o 35dBm IP3 (f
C
= 20MHz)
o 8nV/Hz Voltage Noise Density
o 100MHz 0.1dB Gain Flatness (MAX4268)
o 900V/s Slew Rate
o 45mA Output Driving Capability
o Shutdown Mode Places Outputs in High-
Impedance State
MAX4265MAX4270
Ultra-Low-Distortion, Single-Supply,
300MHz Op Amps with Enable
________________________________________________________________ Maxim Integrated Products
1
-20
-100
0.1M
10M
100M
-80
-90
-70
-60
-50
-40
-30
MAX4268/70 toc10
FREQUENCY (Hz)
SFDR (dBc)
1M
V
OUT
= 1Vp-p
MAX4269
MAX4270
MAX4268
R
L
= 100
to V
CC
/2
19-1552; Rev 0; 10/99
Selector Guide
SFDR vs. Input Frequency
Ordering Information
*Future product--contact factory for availability.
14 SO
-40C to +85C
MAX4270ESD
16 QSOP
14 SO
16 QSOP
14 SO
-40C to +85C
-40C to +85C
-40C to +85C
-40C to +85C
MAX4270EEE
MAX4269ESD
MAX4269EEE
MAX4268ESD
16 QSOP
8 SO
8 MAX
8 SO
-40C to +85C
-40C to +85C
-40C to +85C
-40C to +85C
MAX4268EEE
MAX4267ESA*
MAX4267EUA*
MAX4266ESA*
8 MAX
PIN-PACKAGE
TEMP. RANGE
-40C to +85C
MAX4266EUA*
PART
200
5
2
MAX4270
350
2
2
MAX4269
300
1
2
MAX4268
200
5
1
MAX4267
350
2
1
MAX4266
300
1
1
MAX4265
BANDWIDTH
(MHz)
MIN GAIN
(V/V)
NO. OF
OP AMPS
PART
8 SO
-40C to +85C
MAX4265ESA*
8 MAX
-40C to +85C
MAX4265EUA*
Pin Configurations appear at end of data sheet.
MAX4265MAX4270
Ultra-Low-Distortion, Single-Supply,
300MHz Op Amps with Enable
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +5V, V
EE
= 0, R
L
= 100
to V
CC
/2, V
CM
= V
CC
/2, T
A
= T
MIN
to T
MAX
, typical values are at T
A
= +25C, unless otherwise noted.)
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
)...............................................+8.5V
Voltage on Any Other Pin .................(V
EE
- 0.3V) to (V
CC
+ 0.3V)
Short-Circuit Duration (V
OUT
to V
CC
or V
EE
) ..............Continuous
Continuous Power Dissipation (T
A
= +70C)
16-Pin QSOP (derate 8.33mW/C above +70C)........667mW
8-Pin MAX (derate 4.10mW/C above +70C) ..........330mW
8-Pin SO (derate 5.9mW/C above +70C).................471mW
14-Pin SO (derate 8.33mW/C above +70C).............667mW
Operating Temperature Range ...........................-40C to +85C
Storage Temperature Range .............................-65C to +150C
Junction Temperature ......................................................+150C
Lead Temperature (soldering, 10s) .................................+300C
EN_ Logic Input High Current
1
30
A
V
EN_
= 5V
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Input Offset Current
I
OS
0.1
5.5
A
Input Bias Current
I
B
3.5
40
A
Input Offset Voltage Channel
Matching
1
mV
Input Offset Voltage Drift
TCV
OS
1.5
V/C
Common-Mode Input
Resistance
R
INCM
1
M
Differential Input Resistance
R
INDIFF
40
k
Common-Mode Rejection Ratio
CMRR
60
85
dB
Power-Supply Rejection Ratio
PSRR
60
85
dB
Common-Mode Input Voltage
Operating Supply Voltage
Range
V
CC
4.5
8.0
V
V
CM
V
EE
+ 1.6
V
CC
- 1.6
V
Input Offset Voltage
V
OS
1
9
mV
Open-Loop Voltage Gain
A
OL
60
95
dB
Output Current Drive
I
OUT
30 45
mA
Output Short-Circuit Current
I
SC
100
mA
Closed-Loop Output Resistance
R
OUT
0.035
Power-Up Time
t
PWRUP
10
s
Quiescent Supply Current
I
S
28
32
1.6
5
Disable Output Leakage Current
0.2
5
A
EN_ Logic Low Threshold
V
CC
- 3.5
V
EN_ Logic High Threshold
V
CC
- 1.5
V
EN_ Logic Input Low Current
5 100
A
CONDITIONS
1.75V
V
OUT
3.25V
MAX4268/MAX4269/MAX4270
Either input, (V
EE
+ 1.6)
V
CM
(V
CC
- 1.6)
-10mV
V
IN
10mV
R
L
= 20
(V
EE
+ 1.6V)
V
CM
(V
CC
- 1.6V), no load
V
CC
= 4.5V to 8.0V
Sinking or sourcing to V
CC
or V
EE
V
O
= 1V step, 0.1% settling time
Inferred from PSRR test
Normal mode, EN_ = 5V or floating
Inferred from CMRR test
Disable mode, EN_ = 0
V
EN_
= 0, V
EE
V
OUT
V
CC
V
EN_
= 0
Output Voltage Swing
V
OUT
1.1
1.5
dB
V
CC
- V
OH
, V
OL
- V
EE
mA
V
OUT
= 1V step
MAX4265MAX4270
Ultra-Low-Distortion, Single-Supply,
300MHz Op Amps with Enable
_______________________________________________________________________________________
3
AC ELECTRICAL CHARACTERISTICS
(V
CC
= +5V, V
EE
= 0, R
L
= 100
to V
CC
/2, V
CM
= V
CC
/2, MAX4265/MAX4268 A
V
= +1V/V, MAX4266/MAX4269 A
V
= +2V/V,
MAX4267/MAX4270 A
V
= +5V/V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25C.)
f
C
= 100MHz
68
f
C
= 60MHz
72
Third Harmonic
Distortion
dBc
f
C
= 20MHz
86
f
C
= 10MHz
92
f
C
= 5MHz
95
f
C
= 1MHz
96
V
OUT
= 1Vp-p
(MAX4269)
f
C
= 100MHz
60
f
C
= 60MHz
68
Second Harmonic
Distortion
dBc
f
C
= 20MHz
78
f
C
= 10MHz
87
f
C
= 5MHz
90
f
C
= 1MHz
88
V
OUT
= 1Vp-p
(MAX4269)
Settling Time (0.1%)
t
S
,
0.1
15
ns
V
OUT
= 1V step
Rise/Fall Times
t
R
, t
F
1
ns
V
OUT
= 1V step
Slew Rate
SR
900
V/s
V
OUT
= 1V step
All-Hostile Crosstalk
85
dB
f = 10MHz
MAX4267/MAX4270
MAX4266/MAX4269
MAX4265/MAX4268
0.1dB Gain Flatness
BW
0.1dB
100
MHz
35
35
V
OUT
= 100mVp-p
MAX4267/MAX4270
MAX4266/MAX4269
MAX4265/MAX4268
Full-Power Bandwidth
FPBW
175
MHz
200
200
V
OUT
= 1Vp-p
f
C
= 100MHz
60
f
C
= 60MHz
68
f
C
= 20MHz
78
f
C
= 10MHz
87
f
C
= 5MHz
90
Spurious-Free Dynamic
Range
SFDR
dBc
f
C
= 1MHz
88
V
OUT
= 1Vp-p
(MAX4269)
MAX4267/MAX4270
MAX4266/MAX4269
MAX4265/MAX4268
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Small-Signal -3dB Bandwidth
BW
-3dB
300
MHz
350
200
CONDITIONS
V
OUT
= 100mVp-p
4
-6
0.1M
1M
10M
100M
1G
SMALL-SIGNAL BANDWIDTH
-4
MAX4268/70 toc01a
FREQUENCY (Hz)
GAIN (dB)
-2
0
2
1
-1
-3
-5
3
V
OUT
= 100mVp-p
MAX4270
MAX4269
MAX4268
Typical Operating Characteristics
(V
CC
= +5V, V
EE
= 0, EN_ = 5V, R
L
= 100
to V
CC
/2, MAX4268 A
V
= +1V/V, MAX4269 A
V
= +2V/V, MAX4270 A
V
= +5V/V, T
A
=+25C,
unless otherwise noted.)
MAX4265MAX4270
Ultra-Low-Distortion, Single-Supply,
300MHz Op Amps with Enable
4
_______________________________________________________________________________________
NTSC, f = 3.58MHz, R
L
= 150
to V
CC
/2
f
C
= 20MHz
V
OUT
= 1Vp-p, f
CA
= 20MHz,
f
CB
= 21.25MHz (MAX4269)
No sustained
oscillation
V
IN
= 1V
f = 10MHz
V
EN_
= 0
f = 1kHz
V
IN
= 1V
f = 1kHz
CONDITIONS
pA/
Hz
1
i
n
Input Current Noise Density
nV/
Hz
8
e
n
Input Voltage Noise Density
%
0.015
D
G
Differential Gain
dBm
12
dBm
35
IP3
Two-Tone, Third-Order
Intercept Distortion
Input -1dB Compression Point
22
15
pF
15
Capacitive Load Stability
s
750
t
DIS
Disable Time
pF
2
C
IN
Input Capacitance
1
R
OUT
Output Impedance
pF
5
Disabled Output Capacitance
ns
100
t
EN
Enable Time
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
MAX4265/MAX4268
MAX4266/MAX4269
MAX4267/MAX4270
NTSC, f = 3.58MHz, R
L
= 150
to V
CC
/2
degrees
0.03
D
P
Differential Phase
AC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +5V, V
EE
= 0, R
L
= 100
to V
CC
/2, V
CM
= V
CC
/2, MAX4265/MAX4268 A
V
= +1V/V, MAX4266/MAX4269 A
V
= +2V/V,
MAX4267/MAX4270 A
V
= +5V/V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25C.)
4
-6
0.1M
1M
10M
100M
1G
LARGE-SIGNAL GAIN
vs. FREQUENCY
-4
MAX4268/70 toc02a
FREQUENCY (Hz)
GAIN (dB)
-2
0
2
1
-1
-3
-5
3
V
OUT
= 1Vp-p
MAX4269
MAX4270
MAX4268
0.4
-0.6
0.1M
1M
10M
100M
1G
GAIN FLATNESS vs. FREQUENCY
-0.4
MAX4268/70 toc3
FREQUENCY (Hz)
GAIN (dB)
-0.2
0
0.2
0.1
-0.1
-0.3
-0.5
0.3
MAX4268
MAX4270
MAX4269
MAX4265MAX4270
Ultra-Low-Distortion, Single-Supply,
300MHz Op Amps with Enable
_______________________________________________________________________________________
5
Typical Operating Characteristics (continued)
(V
CC
= +5V, V
EE
= 0, EN_ = 5V, R
L
= 100
to V
CC
/2, MAX4268 A
V
= +1V/V, MAX4269 A
V
= +2V/V, MAX4270 A
V
= +5V/V, T
A
=+25C,
unless otherwise noted.)
-20
-100
0.1M
10M
100M
MAX4268
DISTORTION vs. FREQUENCY
-80
-90
-70
-60
-50
-40
-30
MAX4268/70 toc04
FREQUENCY (Hz)
DISTORTION (dBc)
1M
2ND HARMONIC
3RD HARMONIC
V
OUT
= 1Vp-p
-20
-100
0.1M
10M
100M
MAX4269
DISTORTION vs. FREQUENCY
-80
-90
-70
-60
-50
-40
-30
MAX4268/70 toc05
FREQUENCY (Hz)
DISTORTION (dBc)
1M
V
OUT
= 1Vp-p
3RD HARMONIC
2ND HARMONIC
-20
-100
0.1M
10M
100M
MAX4270
DISTORTION vs. FREQUENCY
-80
-90
-70
-60
-50
-40
-30
MAX4268/70 toc06
FREQUENCY (Hz)
DISTORTION (dBc)
1M
V
OUT
= 1Vp-p
3RD HARMONIC
2ND HARMONIC
-100
-90
-80
-70
-60
-50
-40
-30
-20
0
200
100
300
400
500
600
MAX4268
DISTORTION vs. LOAD
MAX4268/70 toc07
RESISTIVE LOAD (
)
DISTORTION (dBc)
f
O
= 5MHz
V
OUT
= 1Vp-p
3RD HARMONIC
2ND HARMONIC
-100
-90
-80
-70
-60
-50
-40
-30
-20
0
200
100
300
400
500
600
MAX4269
DISTORTION vs. LOAD
MAX4268/70 toc08
RESISTIVE LOAD (
)
DISTORTION (dBc)
f
O
= 5MHz
V
OUT
= 1Vp-p
3RD HARMONIC
2ND HARMONIC
-100
-90
-80
-70
-60
-50
-40
-30
-20
0
200
100
300
400
500
600
MAX4270
DISTORTION vs. LOAD
MAX4268/70 toc09
RESISTIVE LOAD (
)
DISTORTION (dBc)
f
O
= 5MHz
V
OUT
= 1Vp-p
3RD HARMONIC
2ND HARMONIC
-100
-80
-90
-70
-40
-30
-50
-60
-20
0
0.5
1.0
1.5
2.0
2.5
MAX4268
DISTORTION vs. VOLTAGE SWING
MAX4268/70 toc10
VOLTAGE SWING (Vp-p)
DISTORTION (dBc)
f
O
= 5MHz
3RD HARMONIC
2ND HARMONIC
-100
-80
-90
-70
-40
-30
-50
-60
-20
0
0.5
1.0
1.5
2.0
2.5
MAX4269
DISTORTION vs. VOLTAGE SWING
MAX4268/70 toc11
VOLTAGE SWING (Vp-p)
DISTORTION (dBc)
f
O
= 5MHz
3RD HARMONIC
2ND HARMONIC
-100
-80
-90
-70
-40
-30
-50
-60
-20
0
0.5
1.0
1.5
2.0
2.5
MAX4270
DISTORTION vs. VOLTAGE SWING
MAX4268/70 toc12
VOLTAGE SWING (Vp-p)
DISTORTION (dBc)
f
O
= 5MHz
3RD HARMONIC
2ND HARMONIC
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