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MAX4390EUK中文资料

General Description

The MAX4389/MAX4390/MAX4392–MAX4396 family of op amps are unity-gain stable devices that combine high-speed performance, rail-to-rail outputs, and dis-able mode. These devices are targeted for applications where an input or an output is exposed to the outside world, such as video and communications.

The MAX4389/MAX4390/MAX4392–MAX4396 operate from a single 4.5V to 11V supply or from dual ±2.25V to ±5.5V supplies. The common-mode input voltage range extends to the negative power-supply rail (ground in sin-gle-supply applications). The MAX4389/MAX4390/MAX4392–MAX4396 consume only 5.5mA of quinescent supply current per amplifier while achieving a 85MHz -3dB bandwidth, 27MHz 0.1dB gain flatness, and a 500V/μs slew rate. Disable mode sets the outputs to high impedance while consuming only 450μA of current.

The MAX4389 single, MAX4393 dual, MAX4394 triple,and MAX4396 quad include disable capabilities. The MAX4389 and MAX4390 are available in ultra-small,6-pin SC70 packages.

Applications

Set-Top Boxes

Surveillance Video Systems

Analog-to-Digital Converter Interface CCD Imaging Systems Digital Cameras Video-on-Demand Video Line Driver

Features

?Low Cost ?High Speed

85MHz -3dB Bandwidth 27MHz 0.1dB Gain Flatness 500V/μs Slew Rate

?Single 4.5V to 11V or Dual ±2.25V to ±5.5V Operation

?Rail-to-Rail Outputs

?Input Common-Mode Range Extends to V EE ?Low Differential Gain/Phase: 0.015%/0.015°?Low Distortion at 5MHz

-59dBc Spurious-Free Dynamic Range ?High Output Drive: ±50mA ?450μA Disable Capability

(MAX4389/MAX4393/MAX4394/MAX4396)?Space-Saving SC70, SOT23, μMAX, or TSSOP Packages

MAX4389/MAX4390/MAX4392–MAX4396

Ultra-Small, Low-Cost, 85MHz Op Amps with

Rail-to-Rail Outputs and Disable

________________________________________________________________Maxim Integrated Products 1

Pin Configurations

19-2322; Rev 3; 8/04

For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at https://www.wendangku.net/doc/d016520638.html,.

Ordering Information

Typical Operating Circuit

Ordering Information continued at end of data sheet.Selector Guide appears at end of data sheet.

M A X 4389/M A X 4390/M A X 4392–M A X 4396

Ultra-Small, Low-Cost, 85MHz Op Amps with Rail-to-Rail Outputs and Disable

ABSOLUTE MAXIMUM RATINGS

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 )..................................-0.3V to +12V IN_+, IN_-, OUT_, DISABLE .............(V EE - 0.3V) to (V CC + 0.3V)Differential Input Voltage ....................................................±2.5V Current into Input Pins......................................................±20mA Output Short-Circuit Duration to

V CC or V EE (Note 1)................................................Continuous Continuous Power Dissipation (T A = +70°C)

5-Pin SOT23 (derate 7.1mW/°C above +70°C)............571mW 6-Pin SOT23 (derate 8.7mW/°C above +70°C)............696mW 6-Pin SC70 (derate 3.1mW/°C above +70°C)..............245mW 8-Pin SO (derate 5.88mW/°C above +70°C)................471mW 8-Pin μMAX (derate 4.5mW/°C above +70°C).............362mW 10-Pin μMAX (derate 5.6mW/°C above +70°C)...........444mW 14-Pin SO (derate 8.33mW/°C above +70°C)..............667mW 14-Pin TSSOP (derate 10mW/°C above +70°C)..........727mW 20-Pin TSSOP (derate 10.9mW/°C above +70°C).......879mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature......................................................+150°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°C

DC ELECTRICAL CHARACTERISTICS—Single Supply

Note 1:Continuous power dissipation must also be observed.

MAX4389/MAX4390/MAX4392–MAX4396

Ultra-Small, Low-Cost, 85MHz Op Amps with

Rail-to-Rail Outputs and Disable

_______________________________________________________________________________________3

DC ELECTRICAL CHARACTERISTICS—Dual Supply

DC ELECTRICAL CHARACTERISTICS—Single Supply (continued)

(V CC = 5V, V EE = 0V, V CM = V CC /2, V OUT = V CC /2, R L = ∞to V CC /2, DISABLE_= V CC (MAX4389/MAX4393/MAX4394/MAX4396),T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Note 2)

M A X 4389/M A X 4390/M A X 4392–M A X 4396

Ultra-Small, Low-Cost, 85MHz Op Amps with Rail-to-Rail Outputs and Disable 4_______________________________________________________________________________________

AC ELECTRICAL CHARACTERISTICS—Single Supply

DC ELECTRICAL CHARACTERISTICS—Dual Supply (continued)

(V CC = 5V, V EE = -5V, V CM = 0V, V OUT = 0V, R L = ∞to 0, DISABLE_= V CC (MAX4389/MAX4393/MAX4394/MAX4396),T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Note 2)

MAX4389/MAX4390/MAX4392–MAX4396

Ultra-Small, Low-Cost, 85MHz Op Amps with

Rail-to-Rail Outputs and Disable

_______________________________________________________________________________________5

Note 2:All devices are 100% production tested at T A = +25°C. Specifications over temperature limits are guaranteed by design.

AC ELECTRICAL CHARACTERISTICS—Dual Supply

AC ELECTRICAL CHARACTERISTICS—Single Supply (continued)

GAIN AND PHASE vs. FREQUENCY

FREQUENCY (Hz)

G A I N (d B )

100M

10M

10k

100k

-100-80-60-40-20020406080-120

P H A S E (D E G R E E S )-225-180-135-90-4504590

135180-270

SMALL-SIGNAL GAIN vs. FREQUENCY

FREQUENCY (Hz)

G A I N (d B )100M 10M 1M -5-4-3-2-101234-6

100k 1G

LARGE-SIGNAL GAIN vs. FREQUENCY

FREQUENCY (Hz)

G A I N (d B )

100M 10M 1M -5-4-3-2-101234

-6

100k 1G

SMALL-SIGNAL GAIN FLATNESS vs. FREQUENCY

FREQUENCY (Hz)

G A I N (d B )

100M 10M 1M -0.5-0.4-0.3-0.2-0.100.10.20.30.4-0.6

100k 1G

DISTORTION vs. FREQUENCY

FREQUENCY (Hz)D I S T O R T I O N (d B c )

10M 1M -80-90-70-60-50-40-30-20-100-100

100k 100M

LARGE-SIGNAL GAIN FLATNESS vs. FREQUENCY

FREQUENCY (Hz)

G A I N (d B )

100M

10M 1M

-0.5-0.4-0.3-0.2-0.100.10.20.30.4-0.6

100k

OUTPUT IMPEDANCE vs. FREQUENCY

M A X 4389 t o c 06

FREQUENCY (Hz)

O U T P U T I M P E D A N C E (?)

100M 10M 1M 0.1

100

0.01

100k

DISTORTION vs. FREQUENCY

FREQUENCY (Hz)D I S T O R T I O N (d B c )

10M 1M -80-90-70-60-50-40-30-20-100-100

100k 100M

DISTORTION vs. FREQUENCY

FREQUENCY (Hz)

D I S T O R T I O N (d B c )

10M 1M -80-90-70-60-50-40-30-20-100

-100

100k 100M

Typical Operating Characteristics

(V CC = 5V, V EE = -5V, V CM = 0V, A VCL = 1V/V, R L = 100?to GND, GND = 0, T A = +25°C, unless otherwise noted.)

M A X 4389/M A X 4390/M A X 4392–M A X 4396

Ultra-Small, Low-Cost, 85MHz Op Amps with Rail-to-Rail Outputs and Disable 6_______________________________________________________________________________________

DISTORTION vs. RESISTIVE LOAD

VOLTAGE SWING (V P-P )D I S T O R T I O N (d B c )

800

1000

200

400

600

-80-70-60-50-40-30-20-10-900

1200

-100

DISTORTION vs. VOLTAGE SWING

VOLTAGE SWING (V P-P )

D I S T O R T I O N (d B c )

1.5

1.0

-90-70-80

-60-50

-40-30-20-10-100

0.5

2.0

DIFFERENTIAL GAIN AND PHASE

IRE

D I F F G A I N (%)

D I F F P H A S

E (°)

-0.1

00.20.10.30.40.5-0.5-0.4-0.2-0.3-0.100.10

COMMON-MODE REJECTION

vs. FREQUENCY

M A X 4389 t o c 13

FREQUENCY (Hz)

G A I N (d B )

100M

10M 1M

-70-60-50-40-30-20-100-80100k

SMALL-SIGNAL PULSE RESPONSE

20ns/div INPUT 50mV/div

OUTPUT 50mV/div A VCL = 1V/V

POWER-SUPPLY REJECTION

vs. FREQUENCY

M A X 4389 t o c 14

FREQUENCY (Hz)

P S R (d B )

100M 10M 1M -60-50-40-30-20-100-70

100k 1G

OUTPUT VOLTAGE SWING vs. RESISTIVE LOAD

R LOAD (?)

O U T P U T V O L T A G E S W I N G (V )

500

400

100

200

3000.2

0.40.60.81.01.21.41.6

600

SMALL-SIGNAL PULSE RESPONSE

20ns/div INPUT

25mV/div

OUTPUT 50mV/div A VCL = +2V/V R F = 200?A VCL = 2V/V R F = 200?

SMALL-SIGNAL PULSE RESPONSE

20ns/div

INPUT 10mV/div

OUTPUT 50mV/div

A VCL = 5V/V R F = 250?

Typical Operating Characteristics (continued)

(V CC = 5V, V EE = -5V, V CM = 0V, A VCL = 1V/V, R L = 100?to GND, GND = 0, T A = +25°C, unless otherwise noted.)

MAX4389/MAX4390/MAX4392–MAX4396

Ultra-Small, Low-Cost, 85MHz Op Amps with

Rail-to-Rail Outputs and Disable

_______________________________________________________________________________________7

LARGE-SIGNAL PULSE RESPONSE

20ns/div INPUT 500mV/div

OUTPUT 500mV/div A VCL = 1V/V

LARGE-SIGNAL PULSE RESPONSE

20ns/div INPUT 250mV/div

OUTPUT 500mV/div A VCL = 2V/V R F = 200?

LARGE-SIGNAL PULSE RESPONSE

20ns/div

INPUT 100mV/div

OUTPUT 500mV/div

A VCL = 5V/V R F = 250?

VOLTAGE NOISE vs. FREQUENCY

FREQUENCY (Hz)

V O L T A G E N O I S E (n V /H z )

10k

100

10100100011

100k

CURRENT NOISE vs. FREQUENCY

FREQUENCY (Hz)

C U R R E N T N O I S E (p A /√H z )

10k

100

1000

100k

ISOLATION RESISTANCE vs. CAPACITIVE LOAD

FREQUENCY (Hz)

G A I N (d B )

100M

10M 1M

-4-3-2-1013456

-5

-6100k

2Typical Operating Characteristics (continued)

(V CC = 5V, V EE = -5V, V CM = 0V, A VCL = 1V/V, R L = 100?to GND, GND = 0, T A = +25°C, unless otherwise noted.)

M A X 4389/M A X 4390/M A X 4392–M A X 4396

Ultra-Small, Low-Cost, 85MHz Op Amps with Rail-to-Rail Outputs and Disable 8_______________________________________________________________________________________

SMALL-SIGNAL BANDWIDTH vs. LOAD RESISTANCE

A X 4389 t o c 25

R LOAD (?)

B A N D W I D T H (M H z )

7006001002003004005002040608010012014000

800

OPEN-LOOP GAIN vs. RESISTIVE LOAD

M A X 4389 t o c 26

R LOAD (?)

O P E N -L O O P G A I N (d B c )

1k 10203040506070800

10010k CROSSTALK vs. FREQUENCY

M A X 4389 t o c 27

FREQUENCY (Hz)

C R O S S T A L K (d B )

100M 10M 1M -90-80-70-60-50-40-30-20-100

-100

100k 1G

Typical Operating Characteristics (continued)

(V CC = 5V, V EE = -5V, V CM = 0V, A VCL = 1V/V, R L = 100?to GND, GND = 0, T A = +25°C, unless otherwise noted.)

INPUT OFFSET VOLTAGE vs. TEMPERATURE

M A X 4389 t o c 29

TEMPERATURE (°C)I N P U T O F F S E T V O L T A G E (m V )

7550-25025123456780

-50100DISABLE RESPONSE

M A X 4389 t o c 28

200ns/div

5V 0V

1.5V V OUT DISABLE

MAX4389/MAX4390/MAX4392–MAX4396

Ultra-Small, Low-Cost, 85MHz Op Amps with

Rail-to-Rail Outputs and Disable

_______________________________________________________________________________________9

INPUT BIAS CURRENT vs. TEMPERATURE

M A X 4389 t o c 30

TEMPERATURE (°C)

I N P U T B I A S C U R R E N T (μA )

7550-2502512345678

-50100

SUPPLY CURRENT vs. TEMPERATURE

M A X 4389 t o c 31

TEMPERATURE (°C)

S U P P L Y C U R R E N T (m A )

-25

12345678

0-50

100

M A X 4389/M A X 4390/M A X 4392–M A X 4396

Ultra-Small, Low-Cost, 85MHz Op Amps with Rail-to-Rail Outputs and Disable

MAX4389/MAX4390/MAX4392–MAX4396

Ultra-Small, Low-Cost, 85MHz Op Amps with

Rail-to-Rail Outputs and Disable

______________________________________________________________________________________11

Detailed Description

The MAX4389/MAX4390/MAX4392–MAX4396 are dual-supply, rail-to-rail, voltage-feedback amplifiers that employ current-feedback techniques to achieve 500V/μs slew rates and 85MHz 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.

Applications Information

The output voltage swings to within 200mV of each supply rail. Local feedback around the output stage ensures low open-loop output impedance to reduce

gain sensitivity to load variations. The input stage per-mits common-mode voltages to the negative supply and to within 2.25V of the positive supply rail.

Choosing Resistor Values

Unity-Gain Configuration

The MAX4389/MAX4390/MAX4392–MAX4396 are inter-nally compensated for unity gain. When configured for unity gain, a 24?resistor (R F ) in series with the feed-back path optimizes AC performance. This resistor improves AC response by reducing the Q of the paral-lel LC circuit formed by the parasitic feedback capaci-tance and inductance.

M A X 4389/M A X 4390/M A X 4392–M A X 4396

Ultra-Small, Low-Cost, 85MHz Op Amps with Rail-to-Rail Outputs and Disable 12______________________________________________________________________________________

Video Line Driver

The MAX4389/MAX4390/MAX4392–MAX4396 are low-power, voltage-feedback amplifiers featuring large-sig-nal (2V P-P ) bandwidths of 90MHz and 0.1dB large-signal gain flatness of 24MHz. They are designed to minimize differential-gain error and differential-phase error to 0.015% and 0.015°, respectively. They have a 21ns settling time to 0.1%, 500V/μs slew rates, and out-put-current-drive capability of up to 50mA making them ideal for driving video loads.

Inverting and Noninverting Configurations

Select the gain-setting feedback (R F ) and input (R 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-verting gain-of-two configuration (R F = R G ) using 2k ?resistors, combined with 1pF of amplifier input capaci-tance and 1pF of PC board capacitance, causes a pole at 79.6MHz. Since this pole is within the amplifier band-width, it jeopardizes stability. Reducing the 2k ?resis-tors to 100?extends the pole frequency to 1.59GHz,but could limit output swing by adding 200?in parallel with the amplifier’s load resistor (Figures 1a and 1b).

Layout and Power-Supply Bypassing

The MAX4389/MAX4390/MAX4392–MAX4396 operate from single 4.5V to 11V or from dual ±2.25V to ±5.5V supplies. Bypass each supply with a 0.1μF capacitor as close to the pin as possible.

Maxim recommends using microstrip and stripline tech-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 con-stant-impedance board, observe the following design guidelines:?Do not use wire-wrap boards; they are too inductive.?Do not use IC sockets; they increase parasitic cap-acitance and inductance.

?Use surface-mount instead of through-hole compo-nents 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 possi-ble. Do not make 90°turns; round all corners.

Low-Power Disable Mode

The MAX4389/MAX4393/MAX4394/MAX4396 feature a disable function that allows the amplifiers to be placed in a low-power, high-output-impedance state. When the disable pin (DISABLE ) is active, the amplifier’s output impedance is 95k ?. This high resistance and the low 2pF output capacitance make the MAX4389/MAX4390/MAX4392–MAX4396 in RF/video multiplexer or switch applications. For larger arrays, pay careful attention to capacitive loading (see the Output Capacitive Loading and Stability section).

Output Capacitive Loading and Stability

The MAX4389/MAX4390/MAX4392–MAX4396 are opti-mized for AC performance. They are not designed to drive highly reactive loads, which decrease phase mar-gin and may produce excessive ringing and oscillation.Figure 2shows a circuit that eliminates this problem.Figure 3is a graph of the Optimal Isolation Resistor (R S ) vs. Capacitive Load. Figure 4shows how a capac-itive 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 10?to 15?) 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 5shows the effect of a 15?isolation resistor on closed-loop response.

Figure 1b. Inverting Gain Configuration

Figure 1a. Noninverting Gain Configuration

MAX4389/MAX4390/MAX4392–MAX4396

Ultra-Small, Low-Cost, 85MHz Op Amps with

Rail-to-Rail Outputs and Disable

______________________________________________________________________________________

Chip Information

MAX4389 TRANSISTOR COUNT: 70MAX4390 TRANSISTOR COUNT: 70MAX4392 TRANSISTOR COUNT: 204MAX4393 TRANSISTOR COUNT: 204MAX4394 TRANSISTOR COUNT: 298MAX4395 TRANSISTOR COUNT: 396MAX4396 TRANSISTOR COUNT: 396PROCESS: BiCMOS

Figure 2. Driving a Capacitive Load Through an Isolation Resistor

Figure 4. Small-Signal Gain vs. Frequency with Load Capacitance and No Isolation Resistor

Figure 5. Small-Signal Gain vs. Frequency with Load Capacitance and 27?Isolation Resistor

Figure 3. Isolation Resistance vs. Capacitive Load

M A X 4389/M A X 4390/M A X 4392–M A X 4396

Ultra-Small, Low-Cost, 85MHz Op Amps with Rail-to-Rail Outputs and Disable 14

Pin Configurations (continued)

MAX4389/MAX4390/MAX4392–MAX4396

Ultra-Small, Low-Cost, 85MHz Op Amps with

Rail-to-Rail Outputs and Disable

______________________________________________________________________________________15

Pin Configurations (continued)

Ordering Information (continued)

Selector Guide

M A X 4389/M A X 4390/M A X 4392–M A X 4396

Ultra-Small, Low-Cost, 85MHz Op Amps with Rail-to-Rail Outputs and Disable

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 https://www.wendangku.net/doc/d016520638.html,/packages .)

MAX4389/MAX4390/MAX4392–MAX4396

Ultra-Small, Low-Cost, 85MHz Op Amps with

Rail-to-Rail Outputs and Disable

______________________________________________________________________________________

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 https://www.wendangku.net/doc/d016520638.html,/packages .)

M A X 4389/M A X 4390/M A X 4392–M A X 4396

Ultra-Small, Low-Cost, 85MHz Op Amps with Rail-to-Rail Outputs and Disable

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 https://www.wendangku.net/doc/d016520638.html,/packages .)

MAX4389/MAX4390/MAX4392–MAX4396

Ultra-Small, Low-Cost, 85MHz Op Amps with

Rail-to-Rail Outputs and Disable

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.

Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________19?2004 Maxim Integrated Products

Printed USA

is a registered trademark of Maxim Integrated Products.

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 https://www.wendangku.net/doc/d016520638.html,/packages .)