MAXIM MAX4216, MAX4218, MAX4220 Technical data

General Description

The MAX4212/MAX4213 single, MAX4216 dual,
MAX4218 triple, and MAX4220 quad op amps are
unity-gain-stable devices that combine high-speed per­formance with rail-to-rail outputs. The MAX4213/
MAX4218 have a disable feature that reduces power­supply current to 400µA and places the outputs into a
high-impedance state. These devices operate from a
+3.3V to +10V single supply or from ±1.65V to ±5V
dual supplies. The common-mode input voltage range
extends beyond the negative power-supply rail (ground
in single-supply applications).

These devices require only 5.5mA of quiescent supply
current while achieving a 300MHz -3dB bandwidth and
a 600V/µs slew rate. Input voltage noise is only
10nV/√Hz and input current noise is only 1.3pA/√Hz for
either the inverting or noninverting input. These parts
are an excellent solution in low-power/low-voltage sys­tems that require wide bandwidth, such as video, com­munications, and instrumentation. In addition, when
disabled, their high output impedance makes them
ideal for multiplexing applications.

The MAX4212 comes in a miniature 5-pin SOT23 pack­age, while the MAX4213/MAX4216 come in 8-pin µMAX
and SO packages. The MAX4218/MAX4220 are avail­able in a space-saving 16-pin QSOP, as well as a
14-pin SO.

Applications

Battery-Powered Instruments
Video Line Driver
Analog-to-Digital Converter Interface
CCD Imaging Systems
Video Routing and Switching Systems

Features

♦ High Speed:

300MHz -3dB Bandwidth (MAX4212/13)
200MHz -3dB Bandwidth (MAX4216/18/20)
50MHz 0.1dB Gain Flatness (MAX4212/13)
600V/µs Slew Rate

♦ Single 3.3V/5.0V Operation
♦ Rail-to-Rail Outputs
♦ Input Common-Mode Range Extends Beyond V

EE

♦ Low Differential Gain/Phase: 0.02%/0.02°
♦ Low Distortion at 5MHz:

-78dBc SFDR

-75dB Total Harmonic Distortion

♦ High Output Drive: ±100mA
♦ 400µA Shutdown Capability (MAX4213/18)
♦ High Output Impedance in Off State (MAX4213/18)
♦ Space-Saving SOT23-5, µMAX, or QSOP Packages

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

Miniature, 300MHz, Single-Supply,

Rail-to-Rail Op Amps with Enable

________________________________________________________________

Maxim Integrated Products

1

V

EE

IN-

IN+

1

5

V

CC

OUT

MAX4212

SOT23-5

TOP VIEW

2

3

4

OUT

N.C.

V

EE

1
2

8

7

EN
V

CC

IN-

IN+

N.C.

µMAX/SO

3

4

6

5

MAX4213

Pin Configuration

R

O

50Ω

IN

V

OUT

ZO = 50Ω

UNITY-GAIN LINE DRIVER

(R

L

= RO + RTO)

R

F

24Ω

R

TO

50Ω

R

TIN

50Ω

MAX4212

Typical Operating Circuit

19-1178; Rev 1; 6/98

EVALUATION KIT MANUAL

FOLLOWS DATA SHEET

Ordering Information

Ordering Information continued at end of data sheet.

Pin Configurations continued at end of data sheet.

For free samples & the latest literature: http://www.maxim-ic.com, or phone [phone].
For small orders, phone [phone].

—-40°C to +85°C

MAX4213ESA

8 SO

—

ABAF

SOT
TOP

MARK

-40°C to +85°CMAX4213EUA

-40°C to +85°C

MAX4212EUK

8 µMAX

5 SOT23-5

PIN-

PACKAGE

TEMP.

RANGE

PART

查询MAX4212供应商

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

Miniature, 300MHz, Single-Supply,
Rail-to-Rail Op Amps with Enable

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(VCC= +5V, VEE= 0V, EN_ = +5V, RL= 2kΩ to VCC/ 2, V

OUT

= VCC/ 2, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values

are at T

A

= +25°C.)

Supply Voltage (V

CC

to VEE)................................................+12V

IN_-, IN_+, OUT_, EN_.....................(V

EE

- 0.3V) to (VCC+ 0.3V)

Output Short-Circuit Duration to V

CC

or VEE............. Continuous

Continuous Power Dissipation (T

A

= +70°C)

5-Pin SOT23 (derate 7.1mW/°C above +70°C)...........571mW

8-Pin SO (derate 5.9mW/°C above +70°C).................471mW

8-Pin µMAX (derate 4.5mW/°C above +70°C) ............221mW

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 +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 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.

VOL- V

EE

VCC- V

OH

VOL- V

EE

VCC- V

OH

VOL- V

EE

VCC- V

OH

VOL- V

EE

VCC- V

OH

0.60

0.70

RL= 50Ω

0.30 0.50

0.30 0.50

RL= 150Ω

0.06 0.20

0.06 0.20

RL= 2kΩ

0.05

Output Voltage Swing V

OUT

V

0.05

RL= 10kΩ

57

1.0V ≤ V

OUT

≤ 4V, RL= 50Ω

52 59

0.5V ≤ V

OUT

≤ 4.5V, RL= 150Ω

55 61

0.25V ≤ V

OUT

≤ 4.75V, RL= 2kΩ

3

MΩ

Common mode (-0.2V ≤ VCM≤ +2.75V)

49MAX42_ _ES_, MAX42_ _EEE

PARAMETER SYMBOL MIN TYP MAX UNITS

Input Resistance R

IN

70

kΩ

Input Offset Current I

OS

0.1 1.0 µA

Input Bias Current I

B

5.4 9.0 µA

Input Offset Voltage Matching ±1 mV

Common-Mode Rejection Ratio CMRR 70 100 dB

Open-Loop Gain (Note 1) A

VOL

dB

Input Offset Voltage (Note 1)

Input Common-Mode
Voltage Range

V

CM

VEE-V

CC

-

0.20 2.25

V

V

OS

412

mV

Input Offset Voltage
Temperature Coefficient

TC

VOS

8 µV/°C

CONDITIONS

Differential mode (-1V ≤ VIN≤ +1V)

(Note 1)

(Note 1)

Any channels for MAX4216/MAX4218/
MAX4220

(V

EE

- 0.2V) ≤ V

CM

≤ (V

CC

- 2.25V)

Guaranteed by CMRR test
MAX4212EUK, MAX421_EUA

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

Miniature, 300MHz, Single-Supply,

Rail-to-Rail Op Amps with Enable

_______________________________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS (continued)

(VCC= +5V, VEE= 0V, EN_ = +5V, RL= 2kΩ to VCC/ 2, V

OUT

= VCC/ 2, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values

are at T

A

= +25°C.)

EN_ = 0V

EN_ Logic Input Low Current I

IL

200 300

µA

(VEE+ 0.2V) ≤ EN_ ≤ V

CC

Output Current I

OUT

±100 ±120 mA

RL= 20Ω to VCCor V

EE

0.40 0.55Disabled (EN_ = 0V)

Quiescent Supply Current
(per Amplifier)

I

S

5.5 7.0
mA

Enabled

EN_ Logic Input High Current I

IH

0.5 10 µAEN_ = 5V

0.5

EN_ Logic-High Threshold V

IH

V

CC

- 1.6 V

EN_ Logic-Low Threshold V

IL

VCC- 2.6 V

Disabled Output Resistance R

OUT (OFF)

20 35

kΩ

EN_ = 0V, 0V ≤ V

OUT

≤ 5V (Note 3)

45VCC= 3.3V, VEE= 0V, VCM= +0.90V

PARAMETER SYMBOL MIN TYP MAX UNITS

Operating Supply-Voltage
Range

V

S

3.15 11.0 V

60 66

Power-Supply Rejection Ratio
(Note 2)

PSRR

52 57

dB

Output Short-Circuit Current I

SC

±150 mA

Open-Loop Output Resistance R

OUT

8

Ω

CONDITIONS

VCCto V

EE

VCC= 5V, VEE= -5V, VCM= 0V

VCC= 5V, VEE= 0V, VCM= +2.0V

Sinking or sourcing

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

Miniature, 300MHz, Single-Supply,
Rail-to-Rail Op Amps with Enable

4 _______________________________________________________________________________________

Note 1: Tested with VCM= +2.5V.
Note 2: PSR for single +5V supply tested with V

EE

= 0V, VCC= +4.5V to +5.5V; for dual ±5V supply with VEE= -4.5V to -5.5V,

V

CC

= +4.5V to +5.5V; and for single +3.3V supply with VEE= 0V, VCC= +3.15V to +3.45V.

Note 3: Does not include the external feedback network’s impedance.

AC ELECTRICAL CHARACTERISTICS

(VCC= +5V, VEE= 0V, VCM= 2.5V, EN_ = +5V, RF= 24Ω, RL= 100Ω to VCC/ 2, V

OUT

= VCC/ 2, A

VCL

= +1, TA= +25°C, unless

otherwise noted.)

MAX4216/MAX4218/MAX4220,
f = 10MHz, V

OU

T

= 2Vp-p

dB-95X

TALK

Amplifier Crosstalk

MAX4216/MAX4218/MAX4220,
f = 10MHz, V

OUT

= 20mVp-p

dB0.1Amplifier Gain Matching

µs1t

OFF

Amplifier Disable Time

fC= 5MHz, V

OUT

= 2Vp-p dBc-78SFDR

Spurious-Free Dynamic
Range

Total harmonic
distortion

3rd harmonic

2nd harmonic

MAX4216/MAX4218/
MAX4220

MAX4212/MAX4213

MAX4216/MAX4218/
MAX4220

MAX4212/MAX4213

f = 10MHz

EN_ = 0V

f = 10kHz

f = 10kHz

V

OUT

= 20mVp-p

NTSC, RL= 150Ω

NTSC, RL= 150Ω

fC= 10MHz, A

VCL

= +2

fC= 5MHz,
V

OUT

= 2Vp-p

V

OUT

= 100mVp-p

f1 = 10.0MHz, f2 = 10.1MHz, V

OUT

= 1Vp-p

V

OUT

= 2V step

V

OUT

= 2V step

V

OUT

= 2Vp-p

V

OUT

= 20mVp-p

CONDITIONS

ns100t

ON

Amplifier Enable Time

Ω

6Z

OUT

Output Impedance

pF2C

OUT (OFF)

Disabled Output Capacitance

pF1C

IN

Input Capacitance

pA/√Hz

1.3i

n

Input Noise-Current Density

nV/√Hz

10e

n

Input Noise-Voltage Density

%0.02DGDifferential Gain Error

degrees0.02DPDifferential Phase Error

dBm11Input 1dB Compression Point

dBc35IP3

Two-Tone, Third-Order
Intermodulation Distortion

dB-75

-82

HDHarmonic Distortion

200

MHz

300

BW

SS

Small-Signal -3dB Bandwidth

dBc

-78

ns1tR, t

F

Rise/Fall Time

ns45t

S

Settling Time to 0.1%

V/µs600SRSlew Rate

MHz180BW

LS

Large-Signal -3dB Bandwidth

MHz

50

BW

0.1dB

Bandwidth for 0.1dB Gain
Flatness

35

UNITSMIN TYP MAXSYMBOLPARAMETER

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

Miniature, 300MHz, Single-Supply,

Rail-to-Rail Op Amps with Enable

_______________________________________________________________________________________

5

4

-6
100k 1M 10M 100M 1G

MAX4212/13

SMALL-SIGNAL GAIN vs. FREQUENCY

-4

MAX4212/3/6/8/20-01

FREQUENCY (Hz)

GAIN (dB)

-2

0

2

3

-5

-3

-1

1

V

OUT

= 20mVp-p

3

-7
100k 1M 10M 100M 1G

MAX4216/18/20

SMALL-SIGNAL GAIN vs. FREQUENCY

-5

MAX4212/3/6/8/20-02

FREQUENCY (Hz)

GAIN (dB)

-3

-1

1

2

-6

-4

-2

0

V

OUT

= 20mVp-p

9

-1
100k 1M 10M 100M 1G

MAX4212/13

SMALL-SIGNAL GAIN vs. FREQUENCY

1

MAX4212/3/6/8/20-03

FREQUENCY (Hz)

GAIN (dB)

3

5

7

8

0

2

4

6

A

VCL

= +2

V

OUT

= 20mVp-p

9

-1
100k 1M 10M 100M 1G

MAX4216/18/20

SMALL-SIGNAL GAIN vs. FREQUENCY

1

MAX4212/3/6/8/20-04

FREQUENCY (Hz)

GAIN (dB)

3

5

7

8

0

2

4

6

A

VCL

= +2

V

OUT

= 20mVp-p

0.5

-0.5

0.1M 1M 10M 100M 1G

MAX4216/18/20

GAIN FLATNESS vs. FREQUENCY

-0.3

MAX4212/3/6/8/20-07

FREQUENCY (Hz)

GAIN (dB)

-0.1

0.1

0.3

0.4

-0.4

-0.2

0

0.2

4

-6
100k 1M 10M 100M 1G

LARGE-SIGNAL GAIN vs. FREQUENCY

-4

MAX4212/3/6/8/20-05

FREQUENCY (Hz)

GAIN (dB)

-2

0

2

3

-5

-3

-1

1

V

OUT

= 2Vp-p

V

OUT BIAS

= 1.75V

0.7

-0.3

0.1M 1M 10M 100M 1G

MAX4212/13

GAIN FLATNESS vs. FREQUENCY

-0.1

MAX4212/3/6/8/20-06

FREQUENCY (Hz)

GAIN (dB)

0.1

0.3

0.5

0.6

-0.2

0

0.2

0.4

50

-150
100k 1M 10M 100M 1G

MAX4216/18/20

CROSSTALK vs. FREQUENCY

-110

MAX4212/3/6/8/20-08

FREQUENCY (Hz)

CROSSTALK (dB)

-70

-30

10

30

-130

-90

-50

-10

1000

0.1

0.1M 1M 10M 100M

CLOSED-LOOP OUTPUT IMPEDANCE

vs. FREQUENCY

MAX4212/3/6/8/20-09

FREQUENCY (Hz)

IMPEDANCE (Ω)

100

1

10

__________________________________________Typical Operating Characteristics

(VCC= +5V, VEE= 0V, A

VCL

= +1, RF= 24Ω, RL= 100Ω to VCC/ 2, TA = +25°C, unless otherwise noted.)

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

Miniature, 300MHz, Single-Supply,
Rail-to-Rail Op Amps with Enable

6 _______________________________________________________________________________________

0

-100
100k 1M 10M 100M

HARMONIC DISTORTION

vs. FREQUENCY (A

VCL

= +1)

-80

MAX4212/3/6/8/20-10

FREQUENCY (Hz)

HARMONIC DISTORTION (dBc)

-60

-40

-20

-10

-90

-70

-50

-30

V

OUT

= 2Vp-p

2ND HARMONIC

3RD HARMONIC

0

-100
100k 1M 10M 100M

HARMONIC DISTORTION

vs. FREQUENCY (A

VCL

= +2)

-80

MAX4212/3/6/8/20-11

FREQUENCY (Hz)

HARMONIC DISTORTION (dBc)

-60

-40

-20

-10

-90

-70

-50

-30

V

OUT

= 2Vp-p

A

VCL

= +2

2ND HARMONIC

3RD HARMONIC

0

-100
100k 1M 10M 100M

HARMONIC DISTORTION

vs. FREQUENCY (A

VCL

= +5)

-80

MAX4212/3/6/8/20-12

FREQUENCY (Hz)

HARMONIC DISTORTION (dBc)

-60

-40

-20

-10

-90

-70

-50

-30

V

OUT

= 2Vp-p

A

VCL

= +5

2ND HARMONIC

3RD
HARMONIC

0

-10

-20

-30

-60

-70

-90

-80

-40

-50

-100

MAX4212/3/6/8/20-13

LOAD (Ω)

0 200 400 600 800 1000

HARMONIC DISTORTION

vs. LOAD

HARMONIC DISTORTION (dBc)

f = 5MHz
V

OUT

= 2Vp-p

3RD HARMONIC

2ND HARMONIC

0

-100
100k 1M 10M 100M

COMMON-MODE REJECTION

vs. FREQUENCY

-80

MAX4212/3/6/8/20-16

FREQUENCY (Hz)

CMR (dB)

-60

-40

-20

-10

-90

-70

-50

-30

0

-10

-20

-30

-60

-70

-90

-80

-40

-50

-100

MAX4212/3/6/8/20-14

OUTPUT SWING (Vp-p)

0.5

1.0

1.5 2.0

HARMONIC DISTORTION

vs. OUTPUT SWING

HARMONIC DISTORTION (dBc)

fO = 5MHz

3RD HARMONIC

2ND HARMONIC

-0.01
0 100

0 100

DIFFERENTIAL GAIN AND PHASE

-0.01

0.00

0.00

0.01

0.01

0.02

0.02

0.03

0.03

IRE

IRE

DIFF. PHASE (deg)

DIFF. GAIN (%)

MAX4212/3/6/8/20-15

VCM = +1.35V

VCM = +1.35V

20

-80
100k 1M 10M 100M

POWER-SUPPLY REJECTION

vs. FREQUENCY

-60

MAX4212/3/6/8/20-17

FREQUENCY (Hz)

POWER-SUPPLY REJECTION (dB)

-40

-20

0

10

-70

-50

-30

-10

4.5

4.0

3.5

2.5

2.0

1.5

3.0

1.0

MAX4212/3/6/8/20-18

LOAD RESISTANCE (Ω)

25 50 75 100 125 150

OUTPUT SWING

vs. LOAD RESISTANCE (R

L

)

OUTPUT SWING (Vp-p)

A

VCL

= +2

____________________________Typical Operating Characteristics (continued)

(VCC= +5V, VEE= 0V, A

VCL

= +1, RF= 24Ω, RL= 100Ω to VCC/ 2, TA = +25°C, unless otherwise noted.)

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

Miniature, 300MHz, Single-Supply,

Rail-to-Rail Op Amps with Enable

_______________________________________________________________________________________ 7

IN

(50mV/

div)

OUT

(25mV/

div)

VOLTAGE

SMALL-SIGNAL PULSE RESPONSE

(A

VCL

= +1)

MAX4212/3/6/8/20-19

TIME (20ns/div)

V

CM

= +2.5V, RL = 100Ω to GROUND

IN

(25mV/

div)

OUT

(25mV/

div)

VOLTAGE

SMALL-SIGNAL PULSE RESPONSE

(A

VCL

= +2)

MAX4212/3/6/8/20-20

TIME (20ns/div)

VCM = +1.25V, RL = 100Ω to GROUND

IN

(50mV/

div)

OUT

(25mV/

div)

VOLTAGE

SMALL-SIGNAL PULSE RESPONSE

(C

L

= 5pF, A

VCL

= +1)

MAX4212/3/6/8/20-21

TIME (20ns/div)

V

CM

= +1.75V, RL = 100Ω to GROUND

IN

(1V/div)

OUT

(1V/div)

VOLTAGE

LARGE-SIGNAL PULSE RESPONSE

(A

VCL

= +1)

MAX4212/3/6/8/20-22

TIME (20ns/div)

V

CM

= +1.75V, RL = 100Ω to GROUND

100

10

1

1 10 1k 10M1M

MAX4213

VOLTAGE NOISE DENSITY

vs. FREQUENCY

MAX4212/3/6/8/20-25

FREQUENCY (Hz)

NOISE (nV/√Hz)

100 10k 100k

IN

(500mV/

div)

OUT

(500mV/

div)

VOLTAGE

LARGE-SIGNAL PULSE RESPONSE

(A

VCL

= +2)

MAX4212/3/6/8/20-23

TIME (20ns/div)

V

CM

= 0.9V, RL = 100Ω to GROUND

IN

(1V/

div)

OUT

div)

VOLTAGE

LARGE-SIGNAL PULSE RESPONSE

(C

L

= 5pF, A

VCL

= +2)

MAX4212/3/6/8/20-24

TIME (20ns/div)

V

CM

= +1.75V, RL = 100Ω to GROUND

10

1

1 10 1k 10M1M

MAX4218

CURRENT NOISE DENSITY

vs. FREQUENCY

MAX4212/3/6/8/20-26

FREQUENCY (Hz)

NOISE (pA/ √Hz)

100 10k 100k

EN_

5.0V
(ENABLE)

0V
(DISABLE)

1V

0V

OUT

ENABLE RESPONSE TIME

MAX4212/3/6/8/20-27

TIME (1µs/div)

VIN = +1.0V

____________________________Typical Operating Characteristics (continued)

(VCC= +5V, VEE= 0V, A

VCL

= +1, RF= 24Ω, RL= 100Ω to VCC/ 2, TA = +25°C, unless otherwise noted.)

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

Miniature, 300MHz, Single-Supply,
Rail-to-Rail Op Amps with Enable

8 _______________________________________________________________________________________

70

50

60

40

30

20

MAX4212/3/6/8/20-28

LOAD RESISTANCE (Ω)

0 200 400 600 800 1k

OPEN-LOOP GAIN

vs. LOAD RESISTANCE

OPEN-LOOP GAIN (dB)

400
350
300
250

150

50

100

200

0

MAX4212/3/6/8/20-29

LOAD RESISTANCE (Ω)

1000 200 500400300 600

CLOSED-LOOP BANDWIDTH

vs. LOAD RESISTANCE

CLOSED-LOOP BANDWIDTH (MHz)

10

-90
100k 10M 100M1M

OFF ISOLATION vs. FREQUENCY

-80

MAX4212/3/6/8/20-30

FREQUENCY (Hz)

OFF ISOLATION (dB)

-70

-60

-50

-40

-30

-20

-10

0

7

6

4

5

3

MAX4212/3/6/8/20-31

TEMPERATURE (°C)

-25-50 0 755025 100

POWER-SUPPLY CURRENT

vs. TEMPERATURE

POWER-SUPPLY CURRENT (mA)

10

8

6

4

2

0

MAX4212/3/6/8/20-34

POWER-SUPPLY VOLTAGE (V)

43 567891011

POWER-SUPPLY CURRENT

vs. POWER-SUPPLY VOLTAGE

POWER-SUPPLY CURRENT (mA)

6.0

5.5

4.5

5.0

4.0

MAX4212/3/6/8/20-32

TEMPERATURE (°C)

-25-50 0 755025 100

INPUT BIAS CURRENT

vs. TEMPERATURE

INPUT BIAS CURRENT (µA)

0.20

0.16

0.12

0.04

0.08

0

MAX4212/3/6/8/20-33

TEMPERATURE (°C)

-25-50 0 755025 100

INPUT OFFSET CURRENT

vs. TEMPERATURE

INPUT OFFSET CURRENT (µA)

5

4

3

1

2

0

MAX4212/3/6/8/20-35

TEMPERATURE (°C)

-25-50 0 755025 100

INPUT OFFSET VOLTAGE

vs. TEMPERATURE

INPUT OFFSET VOLTAGE (mV)

5.0

4.8

4.6

4.2

4.4

4.0

MAX4212/3/6/8/20-36

TEMPERATURE (°C)

-25-50 0 755025 100

VOLTAGE SWING vs. TEMPERATURE

VOLTAGE SWING (Vp-p)

RL = 150Ω TO V

CC

/ 2

____________________________Typical Operating Characteristics (continued)

(VCC= +5V, VEE= 0V, A

VCL

= +1, RF= 24Ω, RL= 100Ω to VCC/ 2, TA = +25°C, unless otherwise noted.)

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

Miniature, 300MHz, Single-Supply,

Rail-to-Rail Op Amps with Enable

_______________________________________________________________________________________ 9

______________________________________________________________Pin Description

QSOPSOQSOPSO

MAX4218

MAX4216

SO/µMAX

MAX4220

MAX4213

SO/µMAX

MAX4212

SOT23-5

ENC—2 2— —— — Enable Amplifier C

ENB—3 3— —— — Enable Amplifier B

ENA—1 1— —— — Enable Amplifier A

EN—— —— —— 8 Enable Amplifier

IND+14— —— 12— — Amplifier D Noninverting Input

IND-15— —— 13— — Amplifier D Inverting Input

OUTD16— —— 14— — Amplifier D Output

INC+1212 14— 10— — Amplifier C Noninverting Input

INC-1113 15— 9— — Amplifier C Inverting Input

NAME

N.C.

OUT

V

EE

IN+

INA-

OUTA

V

CC

IN-

OUTC

INB+

INB-

OUTB

INA+

8, 9

—

13

—

2

1

4

—

10

5

6

7

3

—

—

11

—

6

7

4

—

14

10

9

8

5

8, 9

—

13

—

6

7

4

—

16

12

11

10

5

—

—

4

—

2

1

8

—

—

5

6

7

3

—

—

11

—

2

1

4

—

8

5

6

7

3

FUNCTION

— 1, 5

No Connect. Not internally connected.
Tie to ground or leave open.

1 6 Amplifier Output

PIN

2 4

Negative Power Supply or Ground (in
single-supply operation)

3 3 Noninverting Input

— — Amplifier A Inverting Input

— — Amplifier A Output

5 7 Positive Power Supply

4 2 Inverting Input

— — Amplifier C Output

— — Amplifier B Noninverting Input

— — Amplifier B Inverting Input

— — Amplifier B Output

— — Amplifier A Noninverting Input

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

_______________Detailed Description

The MAX4212/MAX4213/MAX4216/MAX4218/MAX4220
are single-supply, rail-to-rail, voltage-feedback ampli­fiers that employ current-feedback techniques to
achieve 600V/µs slew rates and 300MHz bandwidths.
Excellent harmonic distortion and differential gain/
phase performance make these amplifiers an ideal
choice for a wide variety of video and RF signal­processing applications.

The output voltage swing comes to within 50mV 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 ±100mA drive capability, while constrain­ing total supply current to less than 7mA. The input
stage permits common-mode voltages beyond the nega­tive supply and to within 2.25V of the positive supply rail.

__________Applications Information

Choosing Resistor Values

Unity-Gain Configuration

The MAX4212/MAX4213/MAX4216/MAX4218/MAX4220
are internally compensated for unity gain. When config­ured for unity gain, the devices require a 24Ω resistor
(RF) in series with the feedback path. This resistor

improves AC response by reducing the Q of the parallel
LC circuit formed by the parasitic feedback capaci­tance and inductance.

Inverting and Noninverting Configurations

Select the gain-setting feedback (RF) and input (RG)
resistor values to fit your application. Large resistor val­ues increase voltage noise and interact with the amplifi­er’s input and PC board capacitance. This can
generate undesirable poles and zeros and decrease
bandwidth or cause oscillations. For example, a nonin­verting gain-of-two configuration (RF= RG) using 1kΩ
resistors, combined with 1pF of amplifier input capaci­tance and 1pF of PC board capacitance, causes a pole
at 159MHz. Since this pole is within the amplifier band­width, it jeopardizes stability. Reducing the 1kΩ resis-
tors to 100Ω extends the pole frequency to 1.59GHz,
but could limit output swing by adding 200Ω in parallel
with the amplifier’s load resistor. Table 1 shows sug­gested feedback, gain resistors, and bandwidth for
several gain values in the configurations shown in
Figures 1a and 1b.

Layout and Power-Supply Bypassing

These amplifiers operate from a single +3.3V to +11V
power supply or from dual supplies to ±5.5V. For single­supply operation, bypass VCCto ground with a 0.1µF
capacitor as close to the pin as possible. If operating with
dual supplies, bypass each supply with a 0.1µF capacitor.

Miniature, 300MHz, Single-Supply,
Rail-to-Rail Op Amps with Enable

10 ______________________________________________________________________________________

IN

R

G

V

OUT

= [1+ (RF / RG)] V

IN

R

F

R

TO

R

TIN

R

O

V

OUT

Figure 1a. Noninverting Gain Configuration Figure 1b. Inverting Gain Configuration

R

IN

R

TIN

G

R

S

R

F

V

OUT

= -(RF / RG) V

R

TO

IN

V

OUT

R

O

Maxim recommends using microstrip and stripline tech­niques 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 care­ful attention to inputs and outputs to avoid large para­sitic capacitance. Whether or not you use a constant­impedance board, observe the following guidelines
when designing the board:

• Don’t use wire-wrap boards because they are too
inductive.

• Don’t use IC sockets because they increase parasitic
capacitance and inductance.

• Use surface-mount instead of through-hole compo­nents for better high-frequency performance.

• Use a PC board with at least two layers; it should be
as free from voids as possible.

• Keep signal lines as short and as straight as possi­ble. Do not make 90° turns; round all corners.

Rail-to-Rail Outputs,

Ground-Sensing Input

The input common-mode range extends from
(VEE- 200mV) to (VCC- 2.25V) with excellent common­mode rejection. Beyond this range, the amplifier output
is a nonlinear function of the input, but does not under­go phase reversal or latchup.

The output swings to within 50mV of either power­supply rail with a 10kΩ load. The input ground-sensing
and the rail-to-rail output substantially increase the
dynamic range. With a symmetric input in a single +5V
application, the input can swing 2.95Vp-p, and the out­put can swing 4.9Vp-p with minimal distortion.

Enable Input and Disabled Output

The enable feature (EN_) allows the amplifier to be
placed in a low-power, high-output-impedance state.
Typically, the EN_ logic low input current (IIL) is small.
However, as the EN voltage (VIL) approaches the nega­tive supply rail, IILincreases (Figure 2). A single resis­tor connected as shown in Figure 3 prevents the rise in
the logic-low input current. This resistor provides a
feedback mechanism that increases VILas the logic
input is brought to VEE. Figure 4 shows the resulting
input current (IIL).

When the MAX4213/MAX4218 are disabled, the amplifi­er’s output impedance is 35kΩ. This high resistance
and the low 2pF output capacitance make these parts
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.

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

Miniature, 300MHz, Single-Supply,

Rail-to-Rail Op Amps with Enable

______________________________________________________________________________________ 11

Table 1. Recommended Component Values

Note: RL= RO+ RTO; R

TIN

and RTOare calculated for 50Ω applications. For 75Ω systems, RTO= 75Ω; calculate R

TIN

from the

following equation:

R =

75

1-

75

R

TIN

G

Ω

-25

+25-10+10-5+5-2+2-1

+1

49.9
10

∞

0

50

1200

GAIN (V/V)

49.9
6

49.9

—

20

500

49.9
25

∞

0

50

500

49.9
11

49.9

—

56

500

49.9
33

100

0

100

500

49.9
25

49.9

—

124

500

49.9
60

62

0

250

500

49.9
105

49.9

—

500

500

49.949.9

RTO(Ω)

90300Small-Signal -3dB Bandwidth (MHz)

5649.9

R

TIN

(Ω)

0—

RS(Ω)

COMPONENT

500

∞

RG(Ω)

50024

RF(Ω)

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

Output Capacitive Loading and Stability

The MAX4212/MAX4213/MAX4216/MAX4218/MAX4220
are optimized for AC performance. They are not
designed to drive highly reactive loads, which de­creases phase margin and may produce excessive
ringing and oscillation. Figure 5 shows a circuit that
eliminates this problem. Figure 6 is a graph of the opti­mal isolation resistor (RS) vs. capacitive load. Figure 7
shows how a capacitive 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.

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.

Miniature, 300MHz, Single-Supply,
Rail-to-Rail Op Amps with Enable

12 ______________________________________________________________________________________

OUT

IN-

EN_

IN+

10k

ENABLE

MAX42_ _

Figure 2. Enable Logic-Low Input Current vs. V

IL

Figure 4. Enable Logic-Low Input Current vs. V

IL

with 10k

Ω

Series Resistor

Figure 3. Circuit to Reduce Enable Logic-Low Input Current

20

0

-20

-40

-60

-80

-100

INPUT CURRENT (µA)

-120

-140

-160
0 50 100 150 300 350 500

0

-1

-2

-3

-4

-5

-6

INPUT CURRENT (µA)

-7

-8

-9

-10
0 50 100 150 300 350 500

200 250 400 450

mV ABOVE V

200 250 400 450

mV ABOVE V

EE

EE

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

Miniature, 300MHz, Single-Supply,

Rail-to-Rail Op Amps with Enable

______________________________________________________________________________________ 13

R

G

R

F

R

ISO

50Ω

C

L

V

OUT

V

IN

R

TIN

MAX42_ _

Figure 5. Driving a Capacitive Load through an Isolation Resistor

30

25

20

5

10

15

0

CAPACITIVE LOAD (pF)

500 100 200150 250

ISOLATION RESISTANCE, R

ISO

(Ω)

Figure 6. Capacitive Load vs. Isolation Resistance

6

-4
100k 10M 100M1M 1G

-2

FREQUENCY (Hz)

GIAN (dB)

0

2

4

5

-3

-1

1

3

CL = 10pF

CL = 15pF

CL = 5pF

Figure 7. Small-Signal Gain vs. Frequency with Load
Capacitance and No Isolation Resistor

3

-7
100k 10M 100M1M 1G

-5

FREQUENCY (Hz)

GIAN (dB)

-3

-1

1

2

-6

-4

-2

0

CL = 68pF

R

ISO

= 27Ω

CL = 120pF

CL = 47pF

Figure 8. Small-Signal Gain vs. Frequency with Load
Capacitance and 27

Ω

Isolation Resistor

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

Miniature, 300MHz, Single-Supply,
Rail-to-Rail Op Amps with Enable

14 ______________________________________________________________________________________

TOP VIEW

INB-

INB+

V

EE

1
2

8

7

V

CC

OUTB

INA-

INA+

OUTA

µMAX/SO

3

4

6

5

MAX4216

14
13
12

11
10

9
8

1

2
3
4
5
6
7

OUTC
INC-

INC+
V

EE

V

CC

ENB

ENC

ENA

MAX4218

INB+
INB­OUTB

OUTA

INA-

INA+

SO

14
13
12

11
10

9
8

1

2
3
4
5
6
7

OUTD
IND-

IND+

V

EE

V

CC

INA+

INA-

OUTA

MAX4220

INC+
INC­OUTC

OUTB

INB-

INB+

SO

16
15
14

13

12
11

10

9

1
2
3
4
5
6
7
8

OUTC
INC­INC+
V

EE

INB+
INB­OUTB
N.C.

ENA
ENC
ENB

V

CC

INA+
INA-

OUTA

N.C.

MAX4218

QSOP

16
15
14
13

12
11
10

9

1
2
3
4
5
6
7
8

OUTD

IND-

IND+

V

EE

INC+

INC-

OUTC

N.C.

OUTA

INA­INA+

V

CC

INB+
INB-

OUTB

N.C.

MAX4220

QSOP

_____________________________________________Pin Configurations (continued)

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

Miniature, 300MHz, Single-Supply,

Rail-to-Rail Op Amps with Enable

______________________________________________________________________________________ 15

362MAX4220

299MAX4218

190MAX4216

95MAX4212/MAX4213

TRANSISTOR

COUNT

PART

___________________Chip Information_Ordering Information (continued)

________________________________________________________Package Information

SOT5L.EPS

—

—

—

—

-40°C to +85°CMAX4220EEE

-40°C to +85°C

MAX4220ESD

-40°C to +85°CMAX4218EEE

-40°C to +85°C

MAX4218ESD

16 QSOP

14 SO

16 QSOP

14 SO

8 µMAX

8 SO

PIN-

PACKAGE

—

—

SOT
TOP

MARK

-40°C to +85°CMAX4216EUA

-40°C to +85°C

MAX4216ESA

TEMP.

RANGE

PART

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

Miniature, 300MHz, Single-Supply,
Rail-to-Rail Op Amps with Enable

16 ______________________________________________________________________________________

8LUMAXD.EPS

___________________________________________Package Information (continued)

QSOP.EPS