MAX4020EEE-T [MAXIM]
Video Amplifier, 1 Channel(s), 4 Func, PDSO16, 0.150 INCH, 0.025 INCH PITCH, MO-137AB, QSOP-16;
| 型号： | MAX4020EEE-T |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Video Amplifier, 1 Channel(s), 4 Func, PDSO16, 0.150 INCH, 0.025 INCH PITCH, MO-137AB, QSOP-16 放大器 光电二极管 |
| 文件： | 总17页 (文件大小：806K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-1246; Rev 3; 8/04
Low-Cost, High-Speed, Single-Supply
Op Amps with Rail-to-Rail Outputs
General Description
____________________________Features
♦ Low-Cost
The MAX4012 single, MAX4016 dual, MAX4018 triple,
and MAX4020 quad op amps are unity-gain-stable
devices that combine high-speed performance with Rail-
to-Rail outputs. The MAX4018 has a disable feature that
reduces power-supply current to 400µA and places its
outputs into a high-impedance state. These devices
operate from a 3.3V to 10V single supply or from 1.6ꢀV
to ꢀV dual supplies. The common-mode input voltage
range extends beyond the negative power-supply rail
(ground in single-supply applications).
♦ High Speed:
200MHz -3dB Bandwidth (MAX4012)
150MHz -3dB Bandwidth
(MAX4016/MAX4018/MAX4020)
30MHz 0.1dB Gain Flatness
600V/µs Slew Rate
♦ Single 3.3V/5.0V Operation
♦ Rail-to-Rail Outputs
These devices require only ꢀ.ꢀmA of quiescent supply
current while achieving a 200MHz -3dB bandwidth and
a 600V/µs slew rate. These parts are an excellent solu-
tion in low-power/low-voltage systems that require wide
bandwidth, such as video, communications, and instru-
mentation. In addition, when disabled, their high-output
impedance makes them ideal for multiplexing
applications.
♦ Input Common-Mode Range Extends Beyond V
♦ Low Differential Gain/Phase: 0.02%/0.02°
EE
♦ Low Distortion at 5MHz:
-78dBc SFDR
-75dB Total Harmonic Distortion
♦ High-Output Drive: 120mA
The MAX4012 comes in a miniature ꢀ-pin SOT23 and 8-
pin SO package, while the MAX4016 comes in 8-pin
♦ 400µA Shutdown Capability (MAX4018)
♦ High-Output Impedance in Off State (MAX4018)
®
µMAX and SO packages. The MAX4018/MAX4020 are
available in a space-saving 16-pin QSOP, as well as a
14-pin SO.
♦ Space-Saving SOT23, SO, µMAX, or QSOP
Packages
Applications
Set-Top Boxes
Ordering Information
Surveillance Video Systems
Battery-Powered Instruments
Video Line Driver
Analog-to-Digital Converter Interface
CCD Imaging Systems
TEMP
RANGE
PIN-
PACKAGE
TOP
MARK
PART
MAX4012EUK-T -40°C to +8ꢀ°C
ꢀ SOT23-ꢀ
8 SO
ABZP
—
MAX4012ESA
MAX4016ESA
MAX4016EUA
-40°C to +8ꢀ°C
-40°C to +8ꢀ°C
-40°C to +8ꢀ°C
8 SO
—
Video Routing and Switching Systems
8 µMAX
—
Ordering Information continued at end of data sheet.
Typical Operating Circuit
Pin Configurations
TOP VIEW
R
F
24Ω
MAX4012
R
50Ω
TO
1
5
4
1
2
3
4
8
7
6
5
V
N.C.
IN-
N.C.
OUT
CC
V
OUT
V
Z
O
= 50Ω
CC
MAX4012
MAX4012
2
3
V
EE
R
50Ω
IN
OUT
N.C.
O
IN+
R
TIN
V
EE
IN+
IN-
50Ω
SO
UNITY-GAIN LINE DRIVER
(R = R + R
SOT23-5
)
TO
L
O
Pin Configurations continued at end of data sheet.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Low-Cost, High-Speed, Single-Supply
Op Amps with Rail-to-Rail Outputs
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V
to V )..................................................12V
8-Pin µMAX (derate 4.1mW/°C above +70°C) ............330mW
14-Pin SO (derate 8.3mW/°C above +70°C)...............667mW
16-Pin QSOP (derate 8.3mW/°C above +70°C)..........667mW
Operating Temperature Range ...........................-40°C to +8ꢀ°C
Storage Temperature Range.............................-6ꢀ°C to +1ꢀ0°C
Lead Temperature (soldering, 10s) .................................+300°C
CC
EE
IN_-, IN_+, OUT_, EN_.....................(V - 0.3V) to (V
+ 0.3V)
EE
CC
Output Short-Circuit Duration to V
or V ............. Continuous
CC
EE
Continuous Power Dissipation (T = +70°C)
A
ꢀ-Pin SOT23 (derate 7.1mW/°C above +70°C)...........ꢀ71mW
8-Pin SO (derate ꢀ.9mW/°C above +70°C).................471mW
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 at 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
= ꢀV, V = 0, EN_ = ꢀV, R =
to V /2, V
= V /2, T = T
OUT
to T
, unless otherwise noted. Typical values are at T
MAX A
CC
EE
L
CC
CC
A
MIN
∞
= +2ꢀ°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
Guaranteed by CMRR test
MIN
TYP
MAX
UNITS
V
Input Common-Mode
Voltage Range
V
EE
-
V
-
CC
V
CM
0.20
2.2ꢀ
Input Offset Voltage (Note 2)
V
4
8
20
mV
OS
Input Offset Voltage
Temperature Coefficient
TC
µV/°C
VOS
Any channels for MAX4016/MAX4018/
MAX4020
Input Offset Voltage Matching
1
mV
Input Bias Current
Input Offset Current
I
(Note 2)
(Note 2)
ꢀ.4
0.1
70
20
20
µA
µA
B
I
OS
Differential mode (-1V ≤ V ≤ +1V)
Common mode (-0.2V ≤ V
kΩ
MΩ
dB
IN
Input Resistance
R
IN
≤ +2.7ꢀV)
3
CM
Common-Mode Rejection Ratio
CMRR
(V - 0.2V) ≤ V
≤ (V - 2.2ꢀV)
70
ꢀ2
100
61
EE
CM
CC
0.2ꢀV ≤ V
0.ꢀV ≤ V
1.0V ≤ V
≤ 4.7ꢀV, R = 2kΩ
L
≤ 4.ꢀV, R = 1ꢀ0Ω
≤ 4V, R = ꢀ0Ω
OUT
Open-Loop Gain (Note 2)
A
ꢀ9
dB
VOL
OUT
OUT
L
ꢀ7
L
V
V
V
V
V
V
V
V
- V
0.06
0.06
0.30
0.30
0.6
0.6
1.1
0.0ꢀ
120
CC
OL
CC
OL
CC
OL
CC
OL
OH
R = 2kΩ
L
- V
- V
EE
OH
EE
R = 1ꢀ0Ω
L
- V
- V
Output Voltage Swing
(Note 2)
V
V
OUT
1.ꢀ
1.ꢀ
OH
EE
R = 7ꢀΩ
L
- V
- V
2.0
OH
EE
R = 7ꢀΩ
L
to ground
- V
0.ꢀ0
T
A
A
= +2ꢀ°C
70
60
R = 20Ω to V
or
CC
L
Output Current
I
mA
OUT
V
EE
T
= T
to T
MIN MAX
Output Short-Circuit Current
Open-Loop Output Resistance
I
Sinking or sourcing
1ꢀ0
8
mA
SC
R
Ω
OUT
2
_______________________________________________________________________________________
Low-Cost, High-Speed, Single-Supply
Op Amps with Rail-to-Rail Outputs
DC ELECTRICAL CHARACTERISTICS (continued)
(V
= ꢀV, V = 0, EN_ = ꢀV, R =
to V /2, V
= V /2, T = T
OUT
to T
, unless otherwise noted. Typical values are at T
MAX
CC
EE
L
CC
CC
A
MIN
A
∞
= +2ꢀ°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
= ꢀV, V = 0, V = 2.0V
MIN
46
TYP
ꢀ7
MAX
UNITS
V
CC
V
CC
V
CC
EE
CM
Power-Supply Rejection Ratio
(Note 3)
PSRR
= ꢀV, V = -ꢀV, V
= 0
ꢀ4
66
dB
EE
CM
CM
= 3.3V, V = 0, V
= 0.90V
4ꢀ
EE
Operating Supply-Voltage
Range
V
V
to V
EE
3.1ꢀ
28
11.0
V
S
CC
Disabled Output Resistance
EN_ Logic-Low Threshold
EN_ Logic-High Threshold
R
EN_ = 0, 0 ≤ V
≤ ꢀV (Note 4)
OUT
3ꢀ
kΩ
V
OUT (OFF)
V
V
- 2.6
IL
CC
V
V
- 1.6
V
IH
CC
(V + 0.2V) ≤ EN_ ≤ V
0.ꢀ
200
0.ꢀ
EE
CC
EN_ Logic Input Low Current
EN_ Logic Input High Current
I
µA
µA
IL
EN_ = 0
EN_ = ꢀV
Enabled
400
10
I
IH
ꢀ.ꢀ
7.0
Quiescent Supply Current
(per Amplifier)
I
mA
S
MAX4018, disabled (EN_ = 0)
0.40
0.6ꢀ
_______________________________________________________________________________________
3
Low-Cost, High-Speed, Single-Supply
Op Amps with Rail-to-Rail Outputs
AC ELECTRICAL CHARACTERISTICS
(V
= ꢀV, V = 0, V
= 2.ꢀV, EN_ = ꢀV, R = 24Ω, R = 100Ω to V /2, V
= V /2, A
= 1, T = +2ꢀ°C, unless otherwise
VCL A
CC
EE
CM
F
L
CC
OUT
CC
noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX4012
200
Small-Signal -3dB Bandwidth
Large-Signal -3dB Bandwidth
BW
BW
V
= 20mV
MHz
SS
OUT
P-P
MAX4016/MAX4018/
MAX4020
1ꢀ0
140
30
V
V
= 2V
MHz
MHz
LS
OUT
OUT
P-P
Bandwidth for 0.1dB Gain
Flatness
BW
= 20mV
(Note ꢀ)
6
0.1dB
P-P
Slew Rate
SR
V
V
V
= 2V step
= 2V step
600
4ꢀ
1
V/µs
ns
OUT
OUT
OUT
Settling Time to 0.1%
Rise/Fall Time
t
S
t , t
R
= 100mV
P-P
ns
F
Spurious-Free Dynamic
Range
SFDR
f
= ꢀMHz, V
= 2V
P-P
-78
dBc
dBc
dB
C
OUT
2nd harmonic
-78
-82
3rd harmonic
f
V
= ꢀMHz,
C
Harmonic Distortion
HD
= 2V
P-P
OUT
Total harmonic
distortion
-7ꢀ
3ꢀ
Two-Tone, Third-Order
Intermodulation Distortion
IP3
f1 = 10.0MHz, f2 = 10.1MHz, V
= 1V
dBc
OUT
P-P
Input 1dB Compression Point
Differential Phase Error
Differential Gain Error
f
= 10MHz, A
= 2
VCL
11
0.02
0.02
10
1.3
1
dBm
degrees
%
C
DP
NTSC, R = 1ꢀ0Ω
L
DG
NTSC, R = 1ꢀ0Ω
L
Input Noise-Voltage Density
Input Noise-Current Density
Input Capacitance
e
n
f = 10kHz
f = 10kHz
nV/√Hz
pA/√Hz
pF
i
n
C
IN
OUT (OFF)
Disabled Output Capacitance
Output Impedance
C
MAX4018, EN_ = 0
f = 10MHz
2
pF
Ω
Z
6
OUT
Amplifier Enable Time
t
MAX4018
100
1
ns
ON
Amplifier Disable Time
t
MAX4018
µs
OFF
MAX4016/MAX4018/MAX4020,
Amplifier Gain Matching
Amplifier Crosstalk
0.1
-9ꢀ
dB
dB
f = 10MHz, V
= 20mV
OUT
P-P
MAX4016/MAX4018/MAX4020,
f = 10MHz, V = 2V , R = ꢀ0Ω to ground
X
TALK
OU
P-P
T
S
Note 1: The MAX4012EUT is 100% production tested at T = +2ꢀ°C. Specifications over temperature limits are guaranteed by
A
design.
Note 2: Tested with V
= 2.ꢀV.
CM
Note 3: PSR for single ꢀV supply tested with V = 0, V
= 4.ꢀV to ꢀ.ꢀV; for dual ꢀV supply with V = -4.ꢀV to -ꢀ.ꢀV,
EE
EE
CC
V
= 4.ꢀV to ꢀ.ꢀV; and for single 3.3V supply with V = 0, V
= 3.1ꢀV to 3.4ꢀV.
CC
EE
CC
Note 4: Does not include the external feedback network’s impedance.
Note 5: Guaranteed by design.
4
_______________________________________________________________________________________
Low-Cost, High-Speed, Single-Supply
Op Amps with Rail-to-Rail Outputs
Typical Operating Characteristics
(V
= ꢀV, V = 0, A
= 1, R = 24Ω, R = 100Ω to V /2, T = +2ꢀ°C, unless otherwise noted.)
F L CC
A
CC
EE
VCL
MAX4012
SMALL-SIGNAL GAIN vs. FREQUENCY
(A = 1)
MAX4012
SMALL-SIGNAL GAIN vs. FREQUENCY
MAX4016/MAX4018/MAX4020
SMALL-SIGNAL GAIN vs. FREQUENCY
(A
= 2)
VCL
VCL
(A
= 1)
VCL
4
3
9
8
3
2
A
V
= 2
= 20mV
A
V
= 1
= 20mV
VCL
OUT
VCL
OUT
A
V
= 1
= 20mV
VCL
OUT
P-P
P-P
P-P
2
1
7
6
5
4
3
2
1
0
1
0
0
-1
-2
-3
-4
-5
-6
-1
-2
-3
-4
-5
-6
-1
-7
100k
1M
10M
FREQUENCY (Hz)
100M
1G
100k
1M
10M
100M
1G
100k
1M
10M
FREQUENCY (Hz)
100M
1G
FREQUENCY (Hz)
MAX4016/MAX4018/MAX4020
SMALL-SIGNAL GAIN vs. FREQUENCY
(A = 2)
MAX4012
GAIN FLATNESS vs. FREQUENCY
LARGE-SIGNAL GAIN vs. FREQUENCY
VCL
4
0.7
0.6
9
V
V
= 2V
P-P
OUT
A
V
= 1
= 20mV
VCL
OUT
3
A
V
= 2
= 20mV
VCL
OUT
= 1.75V
OUT BIAS
8
P-P
P-P
2
1
0.5
0.4
0.3
0.2
0.1
0
7
6
5
4
3
2
1
0
0
-1
-2
-3
-4
-5
-0.1
-0.2
-6
-0.3
-1
100k
1M
10M
FREQUENCY (Hz)
100M
1G
0.1M
1M
10M
FREQUENCY (Hz)
100M
1G
100k
1M
10M
FREQUENCY (Hz)
100M
1G
MAX4016/MAX4018/MAX4020
GAIN FLATNESS vs. FREQUENCY
MAX4016/MAX4018/MAX4020
CROSSTALK vs. FREQUENCY
CLOSED-LOOP OUTPUT IMPEDANCE
vs. FREQUENCY
1000
100
10
0.5
0.4
50
A
V
= 1
R
= 50Ω
VCL
S
30
= 20mV
P-P
OUT
0.3
0.2
10
-10
0.1
-30
0
-50
-0.1
-0.2
-0.3
-0.4
-70
-90
1
-110
-130
-0.5
-150
0.1
0.1M
1M
10M
FREQUENCY (Hz)
100M
1G
100k
1M
10M
100M
1G
0.1M
1M
10M
100M
FREQUENCY (Hz)
FREQUENCY (Hz)
_______________________________________________________________________________________
5
Low-Cost, High-Speed, Single-Supply
Op Amps with Rail-to-Rail Outputs
Typical Operating Characteristics (continued)
(V
= ꢀV, V = 0, A
= 1, R = 24Ω, R = 100Ω to V /2, T = +2ꢀ°C, unless otherwise noted.)
VCL F L
A
CC
EE
HARMONIC DISTORTION
vs. FREQUENCY (A = 1)
CC
HARMONIC DISTORTION
vs. FREQUENCY (A = 2)
HARMONIC DISTORTION
vs. FREQUENCY (A = 5)
VCL
VCL
VCL
0
0
0
V
A
= 2V
= 1
V
A
= 2V
= 2
V
A
= 2V
P-P
= 5
OUT
VCL
P-P
OUT
VCL
P-P
OUT
VCL
-10
-10
-10
-20
-30
-40
-50
-60
-70
-80
-90
-20
-30
-40
-50
-60
-70
-80
-90
-20
-30
-40
-50
-60
-70
-80
-90
2ND HARMONIC
3RD
HARMONIC
2ND HARMONIC
2ND HARMONIC
3RD HARMONIC
10M
3RD HARMONIC
10M
-100
-100
-100
100k
1M
100M
100k
1M
100M
100k
1M
10M
100M
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
DIFFERENTIAL GAIN AND PHASE
HARMONIC DISTORTION
vs. LOAD
HARMONIC DISTORTION
vs. OUTPUT SWING
0.03
V
= 1.35V
0
CM
0
0.02
0.01
f = 5MHz
= 2V
f
= 5MHz
O
-10
-10
V
OUT
P-P
-20
-30
-40
-50
-60
-20
-30
-40
-50
-60
0.00
-0.01
0
100
IRE
0.03
0.02
0.01
0.00
-0.01
V
= 1.35V
CM
-70
-80
-90
-70
-80
-90
2rd HARMONIC
2ND HARMONIC
3RD HARMONIC
3rd HARMONIC
200
-100
0
100
-100
0
400
600
800
1000
IRE
0.5
1.0
1.5
2.0
LOAD (Ω)
OUTPUT SWING (Vp-p)
OUTPUT SWING
vs. LOAD RESISTANCE
COMMON-MODE REJECTION
vs. FREQUENCY
POWER-SUPPLY REJECTION
vs. FREQUENCY
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0
20
10
R to V /2
L
CC
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
-10
-20
-30
-40
-50
-60
-70
R to GROUND
L
A
= 2
VCL
-100
-80
25
50
75
100
125
150
100k
1M
10M
100M
100k
1M
10M
100M
LOAD RESISTANCE (Ω)
FREQUENCY (Hz)
FREQUENCY (Hz)
6
_______________________________________________________________________________________
Low-Cost, High-Speed, Single-Supply
Op Amps with Rail-to-Rail Outputs
Typical Operating Characteristics (continued)
(V
= ꢀV, V = 0, A
= 1, R = 24Ω, R = 100Ω to V /2, T = +2ꢀ°C, unless otherwise noted.)
VCL F L
A
CC
EE
SMALL-SIGNAL PULSE RESPONSE
(A = 1)
CC
SMALL-SIGNAL PULSE RESPONSE
(A = 2)
SMALL-SIGNAL PULSE RESPONSE
(C = 5pF, A = 1)
VCL
L
VCL
VCL
MAX4012-20
MAX4012-21
MAX4012-19
IN
(25mV/
div)
IN
(50mV/
div)
IN
(50mV/
div)
OUT
(25mV/
div)
OUT
(25mV/
div)
OUT
(25mV/
div)
20ns/div
20ns/div
= 1.75V, R = 100Ω to GROUND
20ns/div
V
= 1.25V, R = 100Ω to GROUND
V
V
= 2.5V, R = 100Ω to GROUND
CM
L
CM
L
CM
L
LARGE-SIGNAL PULSE RESPONSE
(A = 2)
LARGE-SIGNAL PULSE RESPONSE
(A = 1)
LARGE-SIGNAL PULSE RESPONSE
(C = 5pF, A = 2)
VCL
VCL
L
VCL
MAX4012-23
MAX4012-22
MAX4012-24
IN
(1V/
div)
IN
(500mV/
div)
IN
(1V/div)
OUT
(500mV/
div)
OUT
(1V/div)
OUT
(500mV/
div)
20ns/div
20ns/div
20ns/div
V
= 0.9V, R = 100Ω to GROUND
V
= 1.75V, R = 100Ω to GROUND
CM
L
V
= 1.75V, R = 100Ω to GROUND
CM
L
CM
L
VOLTAGE-NOISE DENSITY
vs. FREQUENCY
CURRENT-NOISE DENSITY
vs. FREQUENCY
ENABLE RESPONSE TIME
MAX4012-27
100
10
1
10
5.0V
(ENABLE)
EN_
OUT
0
(DISABLE)
1V
0
1
1µs/div
1
10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
1
10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
V
= 1.0V
IN
_______________________________________________________________________________________
7
Low-Cost, High-Speed, Single-Supply
Op Amps with Rail-to-Rail Outputs
Typical Operating Characteristics (continued)
= 1, R = 24Ω, R = 100Ω to V /2, T = +2ꢀ°C, unless otherwise noted.)
VCL F L CC
A
(V
= ꢀV, V = 0, A
CC
EE
OPEN-LOOP GAIN
vs. LOAD RESISTANCE
CLOSED-LOOP BANDWIDTH
vs. LOAD RESISTANCE
OFF-ISOLATION vs. FREQUENCY
10
0
70
60
50
40
30
20
400
350
300
250
200
150
100
50
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
100k
1M
10M
100M
0
200
400
600
800
1k
0
100
200
300
400
500
600
FREQUENCY (Hz)
LOAD RESISTANCE (Ω)
LOAD RESISTANCE (Ω)
SUPPLY CURRENT
vs. TEMPERATURE
INPUT BIAS CURRENT
vs. TEMPERATURE
INPUT OFFSET CURRENT
vs. TEMPERATURE
7
6
5
4
3
6.0
5.5
5.0
4.5
4.0
0.20
0.16
0.12
0.08
0.04
0
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
OUTPUT VOLTAGE SWING
vs. TEMPERATURE
5
4
3
2
1
0
5.0
4.8
4.6
4.4
4.2
4.0
10
8
R = 150Ω TO V /2
L
CC
6
4
2
0
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
3
4
5
6
7
8
9
10 11
TEMPERATURE (°C)
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
8
_______________________________________________________________________________________
Low-Cost, High-Speed, Single-Supply
Op Amps with Rail-to-Rail Outputs
Pin Description
PIN
NAME
FUNCTION
MAX4012 MAX4012
MAX4018
MAX4020
MAX4016
SO/µMAX
SO-8
SOT23
SO
QSOP
8, 9
—
SO
QSOP
8, 9
—
No Connection. Not internally connected. Tie
to ground or leave open.
1, ꢀ, 8
6
—
1
—
—
4
—
—
11
—
—
11
N.C.
OUT
Amplifier Output
Negative Power Supply or Ground (in single-
supply operation)
4
2
13
13
V
EE
3
3
—
—
8
—
—
4
—
—
4
—
—
4
—
—
4
IN+
IN-
Noninverting Input
Inverting Input
2
4
7
ꢀ
V
Positive Power Supply
CC
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1
7
7
1
1
OUTA Amplifier A Output
2
6
6
2
2
INA-
Amplifier A Inverting Input
3
ꢀ
ꢀ
3
3
INA+ Amplifier A Noninverting Input
OUTB Amplifier B Output
7
8
10
11
12
16
1ꢀ
14
—
—
—
—
1
7
7
6
9
6
6
INB-
Amplifier B Inverting Input
ꢀ
10
14
13
12
—
—
—
—
1
ꢀ
ꢀ
INB+ Amplifier B Noninverting Input
OUTC Amplifier C Output
—
—
—
—
—
—
—
—
—
—
8
10
11
12
16
1ꢀ
14
—
—
—
—
9
INC-
Amplifier C Inverting Input
10
14
13
12
—
—
—
—
INC+ Amplifier C Noninverting Input
OUTD Amplifier D Output
IND-
Amplifier D Inverting Input
IND+ Amplifier D Noninverting Input
EN
Enable Amplifier
Enable Amplifier A
Enable Amplifier B
Enable Amplifier C
ENA
ENB
ENC
3
3
2
2
_______________________________________________________________________________________
9
Low-Cost, High-Speed, Single-Supply
Op Amps with Rail-to-Rail Outputs
cuit formed by the parasitic feedback capacitance and
inductance.
Detailed Description
The MAX4012/MAX4016/MAX4018/MAX4020 are sin-
gle-supply, rail-to-rail, voltage-feedback amplifiers that
employ current-feedback techniques to achieve
600V/µs slew rates and 200MHz bandwidths. Excellent
harmonic distortion and differential gain/phase perfor-
mance make these amplifiers an ideal choice for a wide
variety of video and RF signal-processing applications.
Inverting and Noninverting Configurations
Select the gain-setting feedback (R ) and input (R )
F
G
resistor values to fit your application. Large resistor val-
ues increase voltage noise and interact with the amplifi-
er’s input and PC board capacitance. This can
generate undesirable poles and zeros and decrease
bandwidth or cause oscillations. For example, a nonin-
The output voltage swing comes to within ꢀ0mV of each
supply rail. Local feedback around the output stage
assures low open-loop output impedance to reduce
gain sensitivity to load variations. This feedback also
produces demand-driven current bias to the output
transistors for 120mA drive capability, while constrain-
ing total supply current to less than 7mA. The input
stage permits common-mode voltages beyond the nega-
tive supply and to within 2.2ꢀV of the positive supply rail.
verting gain-of-two configuration (R = R ) using 1kΩ
F
G
resistors, combined with 1pF of amplifier input capaci-
tance and 1pF of PC board capacitance, causes a pole
at 1ꢀ9MHz. Since this pole is within the amplifier band-
width, it jeopardizes stability. Reducing the 1kΩ resis-
tors to 100Ω extends the pole frequency to 1.ꢀ9GHz,
but could limit output swing by adding 200Ω in parallel
with the amplifier’s load resistor. Table 1 shows sug-
gested feedback, gain resistors, and bandwidth for
several gain values in the configurations shown in
Figures 1a and 1b.
Applications Information
Choosing Resistor Values
Layout and Power-Supply Bypassing
These amplifiers operate from a single 3.3V to 11V power
supply or from dual supplies to ꢀ.ꢀV. For single-supply
Unity-Gain Configuration
The MAX4012/MAX4016/MAX4018/MAX4020 are inter-
nally compensated for unity gain. When configured for
operation, bypass V
to ground with a 0.1µF capacitor
CC
unity gain, the devices require a 24Ω resistor (R ) in
F
as close to the pin as possible. If operating with dual sup-
plies, bypass each supply with a 0.1µF capacitor.
series with the feedback path. This resistor improves
AC response by reducing the Q of the parallel LC cir-
R
F
R
F
R
G
R
G
IN
R
TIN
R
TO
R
TO
V
OUT
V
OUT
MAX40_ _
MAX40_ _
IN
R
O
R
O
V
OUT
= [1+ (R / R )] V
F G IN
V
OUT
= -(R / R ) V
F G
IN
R
S
R
TIN
Figure 1a. Noninverting Gain Configuration
Figure 1b. Inverting Gain Configuration
10 ______________________________________________________________________________________
Low-Cost, High-Speed, Single-Supply
Op Amps with Rail-to-Rail Outputs
Maxim recommends using microstrip and stripline tech-
The output swings to within 60mV of either power-
supply rail with a 2kΩ load. The input ground-sensing
and the rail-to-rail output substantially increase the
dynamic range. With a symmetric input in a single ꢀV
niques to obtain full bandwidth. To ensure that the PC
board does not degrade the amplifier’s performance,
design it for a frequency greater than 1GHz. Pay care-
ful attention to inputs and outputs to avoid large para-
sitic capacitance. Whether or not you use a constant-
impedance board, observe the following guidelines
when designing the board:
application, the input can swing 2.9ꢀV , and the out-
P-P
put can swing 4.9V
with minimal distortion.
P-P
Enable Input and Disabled Output
The enable feature (EN_) allows the amplifier to be
placed in a low-power, high-output-impedance state.
• Don’t use wire-wrap boards because they are too
inductive.
Typically, the EN_ logic low input current (I ) is small.
IL
• Don’t use IC sockets because they increase parasitic
capacitance and inductance.
However, as the EN voltage (V ) approaches the nega-
IL
tive supply rail, I increases (Figure 2). A single resis-
IL
tor connected as shown in Figure 3 prevents the rise in
the logic-low input current. This resistor provides a
• Use surface-mount instead of through-hole compo-
nents for better high-frequency performance.
feedback mechanism that increases V as the logic
IL
• Use a PC board with at least two layers; it should be
as free from voids as possible.
input is brought to V . Figure 4 shows the resulting
EE
input current (I ).
IL
• Keep signal lines as short and as straight as possi-
ble. Do not make 90° turns; round all corners.
When the MAX4018 is disabled, the amplifier’s output
impedance is 3ꢀkΩ. This high resistance and the low
2pF output capacitance make this part ideal in
RF/video multiplexer or switch applications. For larger
arrays, pay careful attention to capacitive loading. See
the Output Capacitive Loading and Stability section for
more information.
Rail-to-Rail Outputs,
Ground-Sensing Input
The input common-mode range extends from
(V - 200mV) to (V
EE
- 2.2ꢀV) with excellent common-
CC
mode rejection. Beyond this range, the amplifier output
is a nonlinear function of the input, but does not under-
go phase reversal or latchup.
Table 1. Recommended Component Values
GAIN (V/V)
COMPONENT
+1
24
-1
ꢀ00
ꢀ00
0
+2
ꢀ00
ꢀ00
—
-2
ꢀ00
2ꢀ0
0
+5
ꢀ00
124
—
-5
ꢀ00
100
0
+10
ꢀ00
ꢀ6
-10
ꢀ00
ꢀ0
+25
ꢀ00
20
-25
1200
ꢀ0
R (Ω)
F
R
(Ω)
∞
G
R (Ω)
S
—
—
0
—
0
R
R
(Ω)
(Ω)
49.9
49.9
200
ꢀ6
49.9
49.9
10ꢀ
62
49.9
49.9
2ꢀ
100
49.9
33
49.9
49.9
11
∞
49.9
49.9
6
∞
TIN
TO
49.9
90
49.9
60
49.9
2ꢀ
49.9
10
Small-Signal -3dB Bandwidth (MHz)
Note: = R + R ; R and R
R
are calculated for ꢀ0Ω applications. For 7ꢀΩ systems, R
TO
= 7ꢀΩ; calculate R from the
TIN
L
O
TO
TIN
TO
following equation:
7ꢀ
R
=
Ω
TIN
7ꢀ
1-
R
G
______________________________________________________________________________________ 11
Low-Cost, High-Speed, Single-Supply
Op Amps with Rail-to-Rail Outputs
20
ENABLE
0
-20
10kΩ
EN_
-40
IN-
IN+
-60
-80
OUT
MAX40_ _
-100
-120
-140
-160
0
50 100 150 200 250 300 350 400 450 500
mV ABOVE V
Figure 3. Circuit to Reduce Enable Logic-Low Input Current
EE
To implement the mux function, the outputs of multiple
amplifiers can be tied together, and only the amplifier
with the selected input will be enabled. All of the other
amplifiers will be placed in the low-power shutdown
mode, with their high output impedance presenting
very little load to the active amplifier output. For gains
of +2 or greater, the feedback network impedance of
all the amplifiers used in a mux application must be
considered when calculating the total load on the
active amplifier output
Figure 2. Enable Logic-Low Input Current vs. V
IL
0
-1
-2
-3
-4
Output Capacitive Loading and Stability
The MAX4012/MAX4016/MAX4018/MAX4020 are opti-
mized for AC performance. They are not designed to
drive highly reactive loads, which decreases phase
margin and may produce excessive ringing and oscilla-
tion. Figure ꢀ shows a circuit that eliminates this prob-
lem. Figure 6 is a graph of the optimal isolation resistor
-5
-6
-7
-8
-9
(R ) vs. capacitive load. Figure 7 shows how a capaci-
S
-10
0
50 100 150 200 250 300 350 400 450 500
mV ABOVE V
tive load causes excessive peaking of the amplifier’s
frequency response if the capacitor is not isolated from
the amplifier by a resistor. A small isolation resistor
(usually 20Ω to 30Ω) placed before the reactive load
prevents ringing and oscillation. At higher capacitive
loads, AC performance is controlled by the interaction
of the load capacitance and the isolation resistor.
Figure 8 shows the effect of a 27Ω isolation resistor on
closed-loop response.
EE
Figure 4. Enable Logic-Low Input Current vs. V with 10kΩ
Series Resistor
IL
Coaxial cable and other transmission lines are easily
driven when properly terminated at both ends with their
characteristic impedance. Driving back-terminated
transmission lines essentially eliminates the line’s
capacitance.
12 ______________________________________________________________________________________
Low-Cost, High-Speed, Single-Supply
Op Amps with Rail-to-Rail Outputs
30
25
R
F
R
G
20
R
ISO
15
10
5
V
OUT
MAX40_ _
V
IN
C
L
50Ω
R
TIN
0
0
50
100
150
200
250
CAPACITIVE LOAD (pF)
Figure 5. Driving a Capacitive Load through an Isolation Resistor
Figure 6. Capacitive Load vs. Isolation Resistance
6
5
3
R
ISO
= 27Ω
2
1
C = 47pF
L
C = 15pF
L
4
3
0
C = 68pF
L
C = 10pF
L
2
-1
-2
-3
-4
-5
-6
-7
1
C = 120pF
L
0
C = 5pF
-1
-2
-3
-4
L
100k
1M
10M
100M
1G
100k
1M
10M
100M
1G
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 7. Small-Signal Gain vs. Frequency with Load
Capacitance and No Isolation Resistor
Figure 8. Small-Signal Gain vs. Frequency with Load
Capacitance and 27Ω Isolation Resistor
______________________________________________________________________________________ 13
Low-Cost, High-Speed, Single-Supply
Op Amps with Rail-to-Rail Outputs
Pin Configurations (continued)
TOP VIEW
OUTC
OUTD
14
ENA
1
2
3
4
5
6
7
14
OUTA
INA-
1
2
3
4
5
6
7
ENC
ENB
13 INC-
12 INC+
13 IND-
12 IND+
INA+
V
CC
11
10
9
V
V
CC
11
10
9
V
EE
MAX4018
MAX4020
EE
INB+
INB-
INC+
INC-
INA+
INA-
INB+
INB-
OUTB
OUTC
OUTA
8
OUTB
8
SO
SO
OUTA
INA-
8
7
6
5
V
CC
1
2
3
4
OUTB
INB-
MAX4016
INA+
V
EE
INB+
SO/µMAX
1
16 OUTC
ENA
ENC
ENB
1
2
3
4
5
6
7
8
16 OUTD
OUTA
INA-
INC-
INC+
2
3
4
5
6
7
8
15
14
13
IND-
IND+
15
14
INA+
V
V
CC
MAX4018
V
V
CC
MAX4020
EE
13
12
EE
12 INB+
INA+
INA-
INC+
INC-
OUTC
N.C.
INB+
INB-
INB-
OUTB
N.C.
11
10
9
11
10
9
OUTA
N.C.
OUTB
N.C.
QSOP
QSOP
14 ______________________________________________________________________________________
Low-Cost, High-Speed, Single-Supply
Op Amps with Rail-to-Rail Outputs
Ordering Information (continued)
___________________Chip Information
MAX4012 TRANSISTOR COUNT: 9ꢀ
MAX4016 TRANSISTOR COUNT: 190
MAX4018 TRANSISTOR COUNT: 299
MAX4020 TRANSISTOR COUNT: 362
TEMP
RANGE
PIN-
PACKAGE
TOP
MARK
PART
MAX4018ESD
MAX4018EEE
MAX4020ESD
MAX4020EEE
-40°C to +8ꢀ°C
-40°C to +8ꢀ°C
-40°C to +8ꢀ°C
-40°C to +8ꢀ°C
14 SO
—
—
—
—
16 QSOP
14 SO
16 QSOP
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages.)
PACKAGE OUTLINE, SOT-23, 5L
1
21-0057
E
1
______________________________________________________________________________________ 15
Low-Cost, High-Speed, Single-Supply
Op Amps with Rail-to-Rail Outputs
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages.)
4X S
8
8
MILLIMETERS
INCHES
DIM MIN
MAX
MAX
MIN
-
-
0.043
0.006
0.037
0.014
0.007
0.120
1.10
0.15
0.95
0.36
0.18
3.05
A
0.002
0.030
0.010
0.005
0.116
0.05
0.75
0.25
0.13
2.95
A1
A2
b
E
H
ÿ 0.50 0.1
c
D
e
0.0256 BSC
0.65 BSC
0.6 0.1
E
H
0.116
0.188
0.016
0∞
0.120
2.95
4.78
0.41
0∞
3.05
5.03
0.66
6∞
0.198
0.026
6∞
L
1
1
α
S
0.6 0.1
0.0207 BSC
0.5250 BSC
D
BOTTOM VIEW
TOP VIEW
A1
A2
A
c
α
e
L
b
SIDE VIEW
FRONT VIEW
PROPRIETARY INFORMATION
TITLE:
PACKAGE OUTLINE, 8L uMAX/uSOP
APPROVAL
DOCUMENT CONTROL NO.
REV.
1
21-0036
J
1
PACKAGE OUTLINE, QSOP .150", .025" LEAD PITCH
1
21-0055
E
1
16 ______________________________________________________________________________________
Low-Cost, High-Speed, Single-Supply
Op Amps with Rail-to-Rail Outputs
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages.)
INCHES
MILLIMETERS
DIM
A
MIN
MAX
0.069
0.010
0.019
0.010
MIN
1.35
0.10
0.35
0.19
MAX
1.75
0.25
0.49
0.25
0.053
0.004
0.014
0.007
N
A1
B
C
e
0.050 BSC
1.27 BSC
E
0.150
0.228
0.016
0.157
0.244
0.050
3.80
5.80
0.40
4.00
6.20
1.27
E
H
H
L
VARIATIONS:
INCHES
1
MILLIMETERS
DIM
D
MIN
MAX
0.197
0.344
0.394
MIN
4.80
8.55
9.80
MAX
5.00
N
8
MS012
AA
TOP VIEW
0.189
0.337
0.386
D
8.75 14
10.00 16
AB
D
AC
D
C
A
B
0∞-8∞
e
A1
L
FRONT VIEW
SIDE VIEW
PROPRIETARY INFORMATION
TITLE:
PACKAGE OUTLINE, .150" SOIC
APPROVAL
DOCUMENT CONTROL NO.
REV.
1
21-0041
B
1
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
17 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2004 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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