MAXIM MAX4212, MAX4213 User Manual

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 space-saving 16-pin QSOP and 14-pin SO packages.

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/MAX4213) 200MHz -3dB Bandwidth (MAX4216/MAX4218/MAX4220) 50MHz 0.1dB Gain Flatness (MAX4212/MAX4213) 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/MAX4218)

♦ High-Output Impedance in Off State

(MAX4213/MAX4218)

♦ Space-Saving SOT23, µMAX, or QSOP Packages

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

Miniature, 300MHz, Single-Supply,

Rail-to-Rail Op Amps with Enable

________________________________________________________________ Maxim Integrated Products 1

Pin Configurations

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 3; 10/03

EVALUATION KIT MANUAL

AVAILABLE

Ordering Information

Ordering Information continued at end of data sheet.

Pin Configurations continued at end of data sheet.

Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.

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.

PART

TEMP

RANGE

TOP

MARK

MAX4212EUK-T

ABAF

MAX4213ESA

8 SO —

MAX4213EUA

8 µMAX —

PACKAGE

-40°C to +85°C 5 SOT23-5

-40°C to +85°C

TOP VIEW

1

OUT

MAX4212

2

V

EE

3

IN+

SOT23-5

5

4

N.C.

IN+

V

1

2

IN-

EE

MAX4213

3

4

µMAX/SO

V

CC

IN-

8

EN

V

7

CC

OUT

6

5

N.C.

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= 0, 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, 10s) .................................+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

RL= 150Ω

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 4.0 µA

Input Bias Current I

B

5.4 20 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

OS

412

mV

Input Offset Voltage Temperature Coefficient

TC

VOS

8 µV/°C

CONDITIONS

Differential mode (-1V ≤ VIN≤ +1V)

(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= 0, 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_ = 0

EN_ Logic Input Low Current I

IL

200 400

µA

(VEE+ 0.2V) ≤ EN_ ≤ V

CC

Output Current I

OUT

mA

TA= +25°C

0.40 0.65Disabled (EN_ = 0)

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_ = 0, 0 ≤ V

OUT

≤ 5V (Note 3)

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

PARAMETER SYMBOL MIN TYP MAX UNITS

Operating Supply-Voltage Range

V

S

3.15 11.0 V

54 66

Power-Supply Rejection Ratio (Note 2)

PSRR

46 57

dB

Output Short-Circuit Current I

SC

±150 mA

Open-Loop Output Resistance R

OUT

8

Ω

VCCto V

EE

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

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

Sinking or sourcing

TA= T

MIN

to T

MAX

±60

±70 ±120

CONDITIONS

RL= 20Ω to VCCor V

EE

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

= 0, 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= 0, VCC= 3.15V to 3.45V.

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

AC ELECTRICAL CHARACTERISTICS

(VCC= 5V, VEE= 0, 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

= 2V

P-P

dB-95X

TALK

Amplifier Crosstalk

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

OUT

= 20mV

P-P

dB0.1Amplifier Gain Matching

µs1t

OFF

Amplifier Disable Time

fC= 5MHz, V

OUT

= 2V

P-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_ = 0

f = 10kHz

V

OUT

= 20mV

P-P

NTSC, RL= 150Ω

fC= 10MHz, A

VCL

= 2

fC= 5MHz, V

OUT

= 2V

P-P

V

OUT

= 100mV

P-P

f1 = 10.0MHz, f2 = 10.1MHz, V

OUT

= 1V

P-P

V

OUT

= 2V step

V

OUT

= 2V step

V

OUT

= 2V

P-P

V

OUT

= 20mV

P-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

GAIN

(dB)

GAIN

(dB)

GAIN

(dB)

)

CROSSTALK

(dB)

)

__________________________________________Typical Operating Characteristics

(VCC= 5V, VEE= 0, A

VCL

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

MAX4212/MAX4213

SMALL-SIGNAL GAIN vs. FREQUENCY

4

V

= 20mV

OUT

3

2

1

0

-1

GAIN (dB)

-2

-3

-4

-5

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

FREQUENCY (Hz)

MAX4216/MAX4218/MAX4220

SMALL-SIGNAL GAIN vs. FREQUENCY

9

A

= 2

VCL

8

V

= 20mV

OUT

7

6

5

4

3

2

1

0

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

FREQUENCY (Hz)

MAX4216/MAX4218/MAX4220

SMALL-SIGNAL GAIN vs. FREQUENCY

P-P

MAX4212/3/6/8/20-01

OUT

2

1

0

-1

-2

-3

-4

-5

-6

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

P-P

FREQUENCY (Hz)

3

V

= 20mV

LARGE-SIGNAL GAIN vs. FREQUENCY

4

V

= 2V

OUT

P-P

MAX4212/3/6/8/20-04

GAIN (dB)

3

2

1

0

-1

-2

-3

-4

-5

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

V

OUT BIAS

P-P

= 1.75V

FREQUENCY (Hz)

MAX4212/3/6/8/20-02

GAIN (dB)

MAX4212/3/6/8/20-05

GAIN (dB)

MAX4212/MAX4213

SMALL-SIGNAL GAIN vs. FREQUENCY

9

A

= 2

VCL

8

V

= 20mV

OUT

7

6

5

4

3

2

1

0

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

P-P

FREQUENCY (Hz)

MAX4212/MAX4213

GAIN FLATNESS vs. FREQUENCY

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

-0.1

-0.2

-0.3

0.1M 1M 10M 100M 1G FREQUENCY (Hz)

MAX4212/3/6/8/20-03

MAX4212/3/6/8/20-06

MAX4216/MAX4218/MAX4220

GAIN FLATNESS vs. FREQUENCY

0.5

0.4

0.3

0.2

0.1

0

-0.1

-0.2

-0.3

-0.4

-0.5

0.1M 1M 10M 100M 1G FREQUENCY (Hz)

MAX4212/3/6/8/20-07

-10

-30

-50

-70

-90

-110

-130

-150

MAX4216/MAX4218/MAX4220

CROSSTALK vs. FREQUENCY

50

30

10

100k 1M 10M 100M 1G

FREQUENCY (Hz

1000

MAX4212/3/6/8/20-08

100

IMPEDANCE (Ω)

CLOSED-LOOP OUTPUT IMPEDANCE

vs. FREQUENCY

10

1

0.1

0.1M 1M 10M 100M FREQUENCY (Hz

MAX4212/3/6/8/20-09

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

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

6 _______________________________________________________________________________________

)

____________________________Typical Operating Characteristics (continued)

(VCC= 5V, VEE= 0, A

VCL

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

HARMONIC DISTORTION

vs. FREQUENCY (A

0

V

= 2V

OUT

-10

-20

-30

-40

-50

-60

-70

-80

HARMONIC DISTORTION (dBc)

-90

-100 100k 1M 10M 100M

P-P

2ND HARMONIC

FREQUENCY (Hz)

3RD HARMONIC

VCL

= 1)

0

-10

-20

MAX4212/3/6/8/20-10

-30

-40

-50

-60

-70

-80

HARMONIC DISTORTION (dBc)

-90

-100 100k 1M 10M 100M

HARMONIC DISTORTION

vs. FREQUENCY (A

V

= 2V

OUT

P-P

A

= 2

VCL

2ND HARMONIC

FREQUENCY (Hz)

= 2)

VCL

3RD HARMONIC

MAX4212/3/6/8/20-11

HARMONIC DISTORTION

0

vs. FREQUENCY (A

V

= 2V

OUT

-10

-20

-30

-40

-50

-60

-70

-80

HARMONIC DISTORTION (dBc)

-90

-100 100k 1M 10M 100M

P-P

A

= 5

VCL

2ND HARMONIC

FREQUENCY (Hz)

VCL

= 5)

3RD HARMONIC

MAX4212/3/6/8/20-12

HARMONIC DISTORTION

= 2V

vs. LOAD

P-P

2ND HARMONIC

LOAD (Ω)

0

f = 5MHz

-10 V

OUT

-20

-30

-40

-50

-60

-70

-80

HARMONIC DISTORTION (dBc)

-90

3RD HARMONIC

-100 0 200 400 600 800 1000

MAX4212/3/6/8/20-13

0

-10

-20

-30

-40

-50

-60

-70

-80

HARMONIC DISTORTION (dBc)

-90

-100

COMMON-MODE REJECTION

vs. FREQUENCY

0

-10

-20

-30

-40

-50

CMR (dB)

-60

-70

-80

-90

-100 100k 1M 10M 100M

FREQUENCY (Hz)

20

10

0

MAX4212/3/6/8/20-16

-10

-20

-30

-40

-50

-60

POWER-SUPPLY REJECTION (dB)

-70

-80

HARMONIC DISTORTION

vs. OUTPUT SWING

fO = 5MHz

2ND HARMONIC

3RD HARMONIC

0.5

1.0

OUTPUT SWING (V

1.5 2.0 )

P-P

POWER-SUPPLY REJECTION

vs. FREQUENCY

100k 1M 10M 100M

FREQUENCY (Hz)

0.03

0.02

0.01

MAX4212/3/6/8/20-14

0.00

DIFF. GAIN (%)

-0.01

0.03

0.02

0.01

0.00

DIFF. PHASE (deg)

-0.01

4.5

4.0

MAX4212/3/6/8/20-17

3.5

3.0

2.5

2.0

OUTPUT SWING (Vp-p)

1.5

1.0

DIFFERENTIAL GAIN AND PHASE

VCM = 1.35V

0 100

VCM = 1.35V

0 100

IRE

OUTPUT SWING

vs. LOAD RESISTANCE (R

A

= 2

VCL

25 50 75 100 125 150

LOAD RESISTANCE (Ω

)

L

MAX4212/3/6/8/20-15

MAX4212/3/6/8/20-18

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

Miniature, 300MHz, Single-Supply,

Rail-to-Rail Op Amps with Enable

_______________________________________________________________________________________ 7

____________________________Typical Operating Characteristics (continued)

(VCC= 5V, VEE= 0, A

VCL

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

SMALL-SIGNAL PULSE RESPONSE

IN

(50mV/

div)

VOLTAGE

OUT

(25mV/

div)

V

= 2.5V, RL = 100Ω to GROUND

CM

LARGE-SIGNAL PULSE RESPONSE

IN

(1V/div)

(A

VCL

20ns/div

(A

VCL

= 1)

MAX4212/3/6/8/20-19

(25mV/

SMALL-SIGNAL PULSE RESPONSE

(A

VCL

IN

div)

VOLTAGE

OUT

div)

20ns/div

VCM = 1.25V, RL = 100Ω to GROUND

= 2)

MAX4212/3/6/8/20-20

LARGE-SIGNAL PULSE RESPONSE

= 2)

(A

= 1)

MAX4212/3/6/8/20-22

(500mV/

div)

IN

VCL

MAX4212/3/6/8/20-23

IN

(50mV/

div)

VOLTAGE

OUT

(25mV/

div)

IN

(1V/

div)

SMALL-SIGNAL PULSE RESPONSE

= 5pF, A

(C

L

= 1.75V, RL = 100Ω to GROUND

V

CM

20ns/div

VCL

= 1)

LARGE-SIGNAL PULSE RESPONSE

(C

= 5pF, A

L

VCL

= 2)

MAX4212/3/6/8/20-21

MAX4212/3/6/8/20-24

VOLTAGE

OUT

(1V/div)

V

= 1.75V, RL = 100Ω to GROUND

CM

MAX4213

VOLTAGE-NOISE DENSITY

vs. FREQUENCY

100

10

NOISE (nV/√Hz)

1

1 10 1k 10M1M

100 10k 100k

FREQUENCY (Hz)

VOLTAGE

OUT

(500mV/

div)

20ns/div

= 1.75V, RL = 100Ω to GROUND

V

CM

20ns/div

VOLTAGE

OUT

(500mV/

div)

20ns/div

V

= 0.9V, RL = 100Ω to GROUND

CM

MAX4218

CURRENT-NOISE DENSITY

10

MAX4212/3/6/8/20-25

NOISE (pA/√Hz)

vs. FREQUENCY

1

1 10 1k 10M1M

100 10k 100k

FREQUENCY (Hz)

EN_

MAX4212/3/6/8/20-26

OUT

ENABLE RESPONSE TIME

VIN = 1.0V

MAX4212/3/6/8/20-27

1µs/div

5.0V (ENABLE)

0 (DISABLE)

1V

0

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

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

8 _______________________________________________________________________________________

____________________________Typical Operating Characteristics (continued)

(VCC= 5V, VEE= 0, A

VCL

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

OPEN-LOOP GAIN

70

60

50

40

OPEN-LOOP GAIN (dB)

30

20

vs. LOAD RESISTANCE

0 200 400 600 800 1k

LOAD RESISTANCE (Ω)

CLOSED-LOOP BANDWIDTH

400

350

MAX4212/3/6/8/20-28

300

250

200

150

100

CLOSED-LOOP BANDWIDTH (MHz)

50

0

vs. LOAD RESISTANCE

MAX4212/3/6/8/20-29

1000 200 500400300 600

LOAD RESISTANCE (Ω)

OFF-ISOLATION vs. FREQUENCY

10

0

-10

-20

-30

-40

-50

OFF-ISOLATION (dB)

-60

-70

-80

-90 100k 10M 100M1M

FREQUENCY (Hz)

MAX4212/3/6/8/20-30

POWER-SUPPLY CURRENT

7

6

5

4

POWER-SUPPLY CURRENT (mA)

3

vs. TEMPERATURE

-25-50 0 755025 100 TEMPERATURE (°C)

MAX4212/3/6/8/20-31

INPUT BIAS CURRENT (µA)

6.0

5.5

5.0

4.5

4.0

POWER-SUPPLY CURRENT

vs. POWER-SUPPLY VOLTAGE

10

8

6

4

2

POWER-SUPPLY CURRENT (mA)

MAX4212/3/6/8/20-34

5

4

3

2

1

INPUT OFFSET VOLTAGE (mV)

INPUT BIAS CURRENT

vs. TEMPERATURE

-25-50 0 755025 100 TEMPERATURE (°C)

INPUT OFFSET VOLTAGE

vs. TEMPERATURE

0.20

0.16

MAX4212/3/6/8/20-32

0.12

0.08

0.04

INPUT OFFSET CURRENT (µA)

0

5.0

4.8

MAX4212/3/6/8/20-35

4.6

4.4

VOLTAGE SWING (Vp-p)

4.2

INPUT OFFSET CURRENT

vs. TEMPERATURE

-25-50 0 755025 100 TEMPERATURE (°C)

VOLTAGE SWING vs. TEMPERATURE

RL = 150Ω TO VCC/2

MAX4212/3/6/8/20-33

MAX4212/3/6/8/20-36

0

43 567891011

POWER-SUPPLY VOLTAGE (V)

0

-25-50 0 755025 100 TEMPERATURE (°C)

4.0

-25-50 0 755025 100

TEMPERATURE (°C)

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

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 Connection. Not internally connected. Tie to ground or leave open.

1 6 Amplifier Output

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 (R

F

) 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 resistors 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 single-supply 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 ______________________________________________________________________________________

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

R

G

IN

R

TIN

R

F

V

OUT

R

TO

= [1+ (RF / RG)] V

R

IN

R

V

OUT

R

IN

O

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 (V

EE

- 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 2.95V

P-P

, and the out-

put can swing 4.9V

P-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

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 ______________________________________________________________________________________

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

IL

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

IL

with 10kΩ

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

ENABLE

10kΩ

IN-

IN+

MAX42_ _

EN_

OUT

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

Miniature, 300MHz, Single-Supply,

Rail-to-Rail Op Amps with Enable

______________________________________________________________________________________ 13

Figure 5. Driving a Capacitive Load through an Isolation Resistor

Figure 6. Capacitive Load vs. Isolation Resistance

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

30

50Ω

MAX42_ _

R

F

R

ISO

V

OUT

C

L

25

(Ω)

ISO

20

15

10

5

ISOLATION RESISTANCE, R

0

500 100 200150 250

CAPACITIVE LOAD (pF)

R

G

V

IN

R

TIN

6

5

4

3

2

1

GIAN (dB)

0

-1

-2

-3

-4 100k 10M 100M1M 1G

CL = 10pF

FREQUENCY (Hz)

CL = 15pF

CL = 5pF

3

R

= 27Ω

ISO

2

1

0

-1

-2

GIAN (dB)

-3

-4

-5

-6

-7 100k 10M 100M1M 1G

CL = 68pF

CL = 120pF

FREQUENCY (Hz)

CL = 47pF

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

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

14 ______________________________________________________________________________________

Pin Configurations (continued)

TOP VIEW

ENA

ENC

ENB

V

INA+

INA-

OUTA

ENA

ENC

ENB

V

INA+

INA-

OUTA

N.C.

OUTC

1

2

3

4

CC

MAX4218

5

6

7

SO

1

2

3

MAX4218

4

CC

5

6

7

8

14

13

INC-

12

INC+

11

V

EE

INB+

10

INB-

9

OUTB

8

OUTA

1

INA-

2

MAX4216

3

INA+

4

V

EE

16

OUTC

INC-

15

INC+

14

V

13

EE

INB+

12

INB-

11

OUTB

10

N.C.

9

µMAX/SO

V

8

CC

OUTB

7

INB-

6

5

INB+

OUTA

INA-

INA+

V

INB+

INB-

OUTB

OUTA

INA-

INA+

V

INB+

INB-

OUTB

N.C.

1

2

3

4

CC

MAX4220

5

6

7

SO

1

2

3

MAX4220

4

CC

5

6

7

8

OUTD

14

13

IND-

12

IND+

11

V

EE

INC+

10

INC-

9

OUTC

8

16

OUTD

IND-

15

IND+

14

V

13

EE

INC+

12

INC-

11

OUTC

10

N.C.

9

QSOP

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

Miniature, 300MHz, Single-Supply,

Rail-to-Rail Op Amps with Enable

______________________________________________________________________________________ 15

Chip Information_Ordering Information (continued)

MAX4212/MAX4213 TRANSISTOR COUNT: 95

MAX4216 TRANSISTOR COUNT: 190

MAX4218 TRANSISTOR COUNT: 299

MAX4220 TRANSISTOR COUNT: 362

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.)

PART

MAX4216ESA -40°C to +85°C 8 SO —

MAX4216EUA -40°C to +85°C 8 µMAX —

MAX4218ESD -40°C to +85°C 14 SO —

MAX4218EEE -40°C to +85°C 16 QSOP —

MAX4220ESD -40°C to +85°C 14 SO —

MAX4220EEE -40°C to +85°C 16 QSOP —

TEMP

RANGE

PIN PACKAGE

TOP

MARK

SOT-23 5L .EPS

PACKAGE OUTLINE, SOT-23, 5L

21-0057

1

E

1

MAX4212/MAX4213/MAX4216/MAX4218/MAX4220

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

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.

16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

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.)

0.6±0.1

8

1

TOP VIEW

ÿ 0.50±0.1

D

4X S

E H

BOTTOM VIEW

8

1

DIM

A1 A2 b

c D

E

A

e

H

L

α

S

INCHES

MIN

-

0.002

0.030

0.010

0.005

0.116

0.0256 BSC

0.116

0.188

0.016 0∞

0.0207 BSC

MAX

0.043

0.006

0.037

0.014

0.007

0.120

0.198

0.026 6∞

MILLIMETERS

MAX

MIN

-1.10

0.05 0.15

0.950.75

0.25 0.36

0.13 0.18

2.95 3.05

0.65 BSC

2.95 3.05

4.78

5.03

0.41

0.66 6∞0∞

0.5250 BSC

8LUMAXD.EPS

A2

e

FRONT VIEW

A1

A

c

b

L

SIDE VIEW

α

PROPRIETARY INFORMATION

TITLE:

PACKAGE OUTLINE, 8L uMAX/uSOP

21-0036

REV.DOCUMENT CONTROL NO.APPROVAL

1

J

1

QSOP.EPS

MAXIM MAX4212, MAX4213 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual