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MAX4474EUA+T中文资料

General Description

The MAX4464/MAX4470/MAX4471/MAX4472/MAX4474family of micropower op amps operate from a single +1.8V to +5.5V supply and draw only 750nA of supply current. The MAX4470 family feature ground-sensing inputs and Rail-to-Rail ?output. The ultra-low supply current, low-operating voltage, and rail-to-rail output capabilities make these operational amplifiers ideal for use in single lithium ion (Li+), or two-cell NiCd or alka-line battery systems.

The rail-to-rail output stage of the MAX4464/MAX4470/ MAX4471/MAX4472/MAX4474 amplifiers is capable of driving the output voltage to within 4mV of the rail with a 100k ?load, and can sink and source 11mA with a +5V supply. These amplifiers are available in both fully com-pensated and decompensated versions. The single MAX4470, dual MAX4471, and the quad MAX4472 are unity-gain stable. The single MAX4464 and the dual MAX4474 are stable for closed-loop gain configurations of ≥+5V/V. These amplifiers are available in space-sav-ing SC70, SOT23, μMAX, and TSSOP packages.

Applications

Features

o Ultra-Low 750nA Supply Current Per Amplifier o Ultra-Low +1.8V Supply Voltage Operation o Ground-Sensing Input Common-Mode Range o Outputs Swing Rail-to-Rail

o Outputs Source and Sink 11mA of Load Current o No Phase Reversal for Overdriven Inputs o High 120dB Open-Loop Voltage Gain o Low 500μV Input Offset Voltage o 9kHz Gain-Bandwidth Product (MAX4470/MAX4471/MAX4472)o 40kHz Gain-Bandwidth Product (MAX4464/MAX4474)

o 250pF (min) Capacitive Load Capability o Available in Tiny 5-Pin SC70 and 8-Pin SOT23Packages

MAX4464/MAX4470/MAX4471/MAX4472/MAX4474

Single/Dual/Quad, +1.8V/750nA, SC70,

Rail-to-Rail Op Amps

________________________________________________________________Maxim Integrated Products 1

Pin Configurations

19-2021; Rev 2; 2/03

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/0a10505509.html,.

Ordering Information

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

Selector Guide

Battery-Powered Systems

Portable Instrumentation Pagers and Cellphones Micropower Thermostats

Electrometer Amplifiers Solar-Powered Systems Remote Sensor Active Badges pH Meters

M A X 4464/M A X 4470/M A X 4471/M A X 4472/M A X 4474

Single/Dual/Quad, +1.8V/750nA, SC70, Rail-to-Rail Op Amps 2_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

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.

V DD to V SS ...............................................................-0.3V to +6V IN_+ or IN_-......................................(V SS - 0.3V) to (V DD + 0.3V)OUT_ Shorted to V SS or V DD ......................................Continuous Continuous Power Dissipation (T A = +70°C)

5-Pin SC70 (derate 3.1mW/°C above +70°C)...................247mW 5-Pin SOT23 (derate 7.1mW/°C above +70°C).................571mW 8-Pin SOT23 (derate 8.9mW/°C above +70°C).................714mW 8-Pin μMAX (derate 4.5mW/°C above +70°C)..................362mW

8-Pin SO (derate 5.88mW/°C above +70°C)....................471mW 14-Pin TSSOP (derate 9.1mW/°C above +70°C)...........727mW 14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW 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

MAX4464/MAX4470/MAX4471/MAX4472/MAX4474

Single/Dual/Quad, +1.8V/750nA, SC70,

Rail-to-Rail Op Amps

_______________________________________________________________________________________3

ELECTRICAL CHARACTERISTICS (continued)

ELECTRICAL CHARACTERISTICS

M A X 4464/M A X 4470/M A X 4471/M A X 4472/M A X 4474

Single/Dual/Quad, +1.8V/750nA, SC70, Rail-to-Rail Op Amps 4_______________________________________________________________________________________

Typical Operating Characteristics

(V DD = +5V, V SS = 0, V CM = 0, R L = 100k ?to V DD /2, T A = +25°C, unless otherwise noted.)

0.20.10.50.40.30.70.80.60.91.5 3.0 3.52.0 2.5 4.0 4.5 5.0 5.5 6.0

SUPPLY CURRENT PER AMPLIFIER vs.

SUPPLY VOLTAGE

M A X 4470–74 t o c 01

SUPPLY VOLTAGE (V)

S U P P L Y C U R R E N T (μA )

0.20.10.50.40.30.70.80.60.9-500-25255075100

SUPPLY CURRENT PER AMPLIFIER vs.

TEMPERATURE

M A X 4470–74 t o c 02

TEMPERATURE (°C)

S U P P L Y C U R R E N T (μA )

00.100.050.300.200.250.150.400.450.350.50

-50

-25

100

OFFSET VOLTAGE vs.TEMPERATURE

M A X 4470–74 t o c 03

TEMPERATURE (°C)

O F F S E T V O L T A G E (m V )00.100.050.200.150.300.250.350.450.400.50

1.0

1.5

0.5

2.0

2.5

3.0

3.5

4.0

OFFSET VOLTAGE

vs. COMMON-MODE VOLTAGE

M A X 4470-74 t o c 04

COMMON-MODE VOLTAGE (V)

O F F S E T V O L T A G E (m V )-400

-350

-150-250-200-300-50-1000

-50

-25

100

INPUT BIAS CURRENT vs.

TEMPERATURE

M A X 4470–74 t o c 05

TEMPERATURE (°C)

I N P U T B I A S C U R R E N T (p A )-90

-70-80-40-50-60-20-10-300

0 1.51.00.5 2.0 2.5 3.0 3.5 4.0

INPUT BIAS CURRENT https://www.wendangku.net/doc/0a10505509.html,MON-MODE VOLTAGE

M A X 4470–74 t o c 06

COMMON-MODE VOLTAGE (V)

I N P U T B I A S C U R R E N T (p A )

0-100

100

10k

POWER-SUPPLY REJECTION RATIO vs.

FREQUENCY

-80-90M A X 4470–74 t o c 07

FREQUENCY (Hz)

P S R R (d B )

-60-70-40-30-50-20-1000.21.00.60.80.41.41.21.6-50

-25

100OUTPUT VOLTAGE SWING LOW vs.

TEMPERATURE

TEMPERATURE (°C)V O L - V S S (m V )

142356-500-25255075100

OUTPUT VOLTAGE SWING HIGH vs.

TEMPERATURE

TEMPERATURE (°C)

V D D - V O H (m V )

MAX4464/MAX4470/MAX4471/MAX4472/MAX4474

Single/Dual/Quad, +1.8V/750nA, SC70,

Rail-to-Rail Op Amps

_______________________________________________________________________________________5

-120

-100-110-60-80-70-90-40-30-50-20-50

-25

100

COMMON-MODE REJECTION RATIO vs.

TEMPERATURE

TEMPERATURE (°C)

C M R R (d B )

00.40.20.80.61.21.01.4-50

-25

100MINIMUM SUPPLY VOLTAGE

vs. TEMPERATURE

M A X 4470-74 t o c 11

TEMPERATURE (°C)M I N I M U

M S U P P L Y V O L T A G E (V )

708090100110120130140

2.5

3.0 3.5

4.0 4.5

5.0

A VOL vs. OUTPUT VOLTAGE SWING

OUTPUT VOLTAGE (Vp-p)

A V O L (d

B )1

1001k 10k

100k

MAX4470/MAX4471/MAX4472GAIN AND PHASE vs. FREQUENCY

FREQUENCY (Hz)G A I N (d B )

P H A S E (d e g )80706050403020-60

100-10-20-30-40-5090

45-1350

-45-90

100

10k

100k

MAX4470/MAX4471/MAX4472GAIN AND PHASE vs. FREQUENCY

FREQUENCY (Hz)

G A I N (d B )P H A S E (d e g )

80706050403020-60

100-10-20-30-40-50180135

9045-1350

-45

-90-40

-140

100

1k 10k

100k

CROSSTALK vs. FREQUENCY

-100

-120

FREQUENCY (Hz)

C R O S S T A L K (d B )-80

-6010.00

0.01

100

10k

MAX4470/MAX4471/MAX4472TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY

M A X 4470–74 t o c 16

FREQUENCY (Hz)

T H D + N (%)

0.10

1.00

10k 1010

1k 100

100k

10k

VOLTAGE NOISE DENSITY vs.

FREQUENCY

M A X 4470–74 t o c 17

FREQUENCY (Hz)

100

1k N O I S E (n V /√H z )

100k

100

10k

100k 1M

MAX4470/MAX4471/MAX4472 STABILITY vs. CAPACITIVE AND RESISTIVE LOADS

RESISTIVE LOAD (?)

10k

C A P A C I T I V E L O A

D (p F )

Typical Operating Characteristics (continued)

(V DD = +5V, V SS = 0, V CM = 0, R L = 100k ?to V DD /2, T A = +25°C, unless otherwise noted.)

500μs/div

MAX4470/MAX4471/MAX4472SMALL-SIGNAL STEP RESPONSE

INPUT 50mV/div

OUTPUT 50mV/div

V DD = +5V A V = +1V/V R L = 1M ? C L = 250pF

500μs/div MAX4470/MAX4471/MAX4472SMALL-SIGNAL STEP RESPONSE

INPUT 50mV/div

OUTPUT 50mV/div V DD = +5V A V = +1V/V R L = 1M ? C L = 1000pF

500μs/div MAX4470/MAX4471/MAX4472LARGE-SIGNAL STEP RESPONSE

V DD = +5V A V = +1V/V R L = 1M ?C L = 12pF

INPUT 500mV/div

OUTPUT 500mV/div

500μs/div

MAX4470/MAX4471/MAX4472LARGE-SIGNAL STEP RESPONSE

INPUT 500mV/div

OUTPUT 500mV/div

V DD = +5V A V = +1V/V R L = 1M ? C L = 1000pF

0520101525300

100

150200

250300

MAX4470/MAX4471/MAX4472

PERCENT OVERSHOOT vs. CAPACITIVE LOAD

C LOA

D (pF)

P E R C E N T O V E R S H O O T (%)

3-7100

1k 10k

MAX4470/MAX4471/MAX4472SMALL-SIGNAL GAIN vs. FREQUENCY

-5-6

FREQUENCY (Hz)

G A I N (d B )

-3-4-10-212

-7

1001k 100k

10k MAX4470/MAX4471/MAX4472SMALL-SIGNAL GAIN vs. FREQUENCY

-5-6FREQUENCY (Hz)

G A I N (d B )

-3-4-10-212M A X 4464/M A X 4470/M A X 4471/M A X 4472/M A X 4474

Single/Dual/Quad, +1.8V/750nA, SC70, Rail-to-Rail Op Amps 6_______________________________________________________________________________________

01284162024283236400

5I OUT vs. V OUT

V OUT (V)

I O U T (m A )

500μs/div MAX4470/MAX4471/MAX4472SMALL-SIGNAL STEP RESPONSE V DD = +5V A V = +1V/V R L = 1M ?C L = 12pF

INPUT 500mV/div

OUTPUT 500mV/div Typical Operating Characteristics (continued)

(V DD = +5V, V SS = 0, V CM = 0, R L = 100k ?to V DD /2, T A = +25°C, unless otherwise noted.)

MAX4464/MAX4470/MAX4471/MAX4472/MAX4474

Single/Dual/Quad, +1.8V/750nA, SC70,

Rail-to-Rail Op Amps

_______________________________________________________________________________________7

Typical Operating Characteristics (continued)

(V DD = +5V, V SS = 0, V CM = 0, R L = 100k ?to V DD /2, T A = +25°C, unless otherwise noted.)

3-7

1001k 10k 100k MAX4470/MAX4471/MAX4472SMALL-SIGNAL GAIN vs. FREQUENCY

-5

FREQUENCY (Hz)

G A I N (d B )

-3-112-6-4-203-7

1001k 10k MAX4470/MAX4471/MAX4472LARGE-SIGNAL GAIN vs. FREQUENCY

-5-6

FREQUENCY (Hz)

G A I N (d B )

-3-4-10-212

-7

1001k 10k

MAX4470/MAX4471/MAX4472LARGE-SIGNAL GAIN vs. FREQUENCY

-5-6FREQUENCY (Hz)

G A I N (d B )

-3-4-10-212

-7100

1k 10k

MAX4470/MAX4471/MAX4472LARGE-SIGNAL GAIN vs. FREQUENCY

-5-6FREQUENCY (Hz)

G A I N (d B )

-3-4-10-21280-60

1k 10k

100k

10FREQUENCY (Hz)G A I N (d B )

10100MAX4464/MAX4474

GAIN AND PHASE vs. FREQUENCY

7060504030200-10-20-30-40-50180135

9045

0-45-90

-135P H A S E (d e g r e e s )80-60

1k 10k

100k

10FREQUENCY (Hz)

G A I N (d B )

100MAX4464/MAX4474

GAIN AND PHASE vs. FREQUENCY

7060504030200-10-20-30-40-50

180

13590450

-45-90-135P H A S E (d e g r e e s )

0.001

10k

100

MAX4464/MAX4474

TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY

0.01

0.1

M A X 4464 t o c 34

FREQUENCY (Hz)

T H D + N (%)

100,000

10010k

100k 1M

MAX4464/MAX4474STABILITY vs. CAPACITIVE AND RESISTIVE LOADS

RESISTIVE LOAD (?)

C A P A C I T I V E L O A

D (p F )1000

10,000

OUTPUT 50mV/div

INPUT 10mV/div

MAX4464/MAX4474

SMALL-SIGNAL STEP RESPONSE

500μs/div

V DD = +5V A V = +5V/V R L = 1M ?C L = 8pF

M A X 4464/M A X 4470/M A X 4471/M A X 4472/M A X 4474

Single/Dual/Quad, +1.8V/750nA, SC70, Rail-to-Rail Op Amps 8_______________________________________________________________________________________

OUTPUT 50mV/div INPUT 10mV/div

MAX4464/MAX4474

SMALL-SIGNAL STEP RESPONSE

M A X 4464 t o c 37

500μs/div V DD = +5V A V = +5V/V R L = 1M ?C L = 250pF

OUTPUT 50mV/div INPUT 10mV/div

MAX4464/MAX4474

SMALL-SIGNAL STEP RESPONSE

M A X 4464 t o c 38

500μs/div V DD = +5V A V = +5V/V R L = 1M ?C L = 1000pF

OUTPUT 500mV/div

INPUT 100mV/div

MAX4464/MAX4474

LARGE-SIGNAL STEP RESPONSE

500μs/div

V DD = +5V A V = +5V/V R L = 1M ?C L = 8pF

OUTPUT 500mV/div

INPUT 100mV/div

MAX4464/MAX4474

LARGE-SIGNAL STEP RESPONSE

500μs/div

V DD = +5V A V = +5V/V R L = 1M ?C L = 1000pF

10520152530010015050200250300

MAX4464/MAX4474

PERCENT OVERSHOOT vs. CAPACITIVE LOAD

C LOA

D (pF)

P E R C E N T O V E R S H O O T (%)

2-7

100100k

10k 1k MAX4464/MAX4474

SMALL-SIGNAL NORMALIZED GAIN

vs. FREQUENCY

-4-60-23-3-51-1FREQUENCY (Hz)

G A I N (d B )

2-7

100

100k

10k

MAX4464/MAX4474

SMALL-SIGNAL NORMALIZED GAIN

vs. FREQUENCY

-4-6

0-23

-3-51-1FREQUENCY (Hz)

G A I N (d B )

Typical Operating Characteristics (continued)

(V DD = +5V, V SS = 0, V CM = 0, R L = 100k ?to V DD /2, T A = +25°C, unless otherwise noted.)

MAX4464/MAX4470/MAX4471/MAX4472/MAX4474

Single/Dual/Quad, +1.8V/750nA, SC70,

Rail-to-Rail Op Amps

2-7

100100k 10k 1k MAX4464/MAX4474

LARGE-SIGNAL NORMALIZED GAIN

vs. FREQUENCY

-4-60-23-3-51-1FREQUENCY (Hz)G A I N (d B )

2-7

100100k

10k 1k MAX4464/MAX4474

LARGE-SIGNAL NORMALIZED GAIN

vs. FREQUENCY

-4-60-23

-3-51-1FREQUENCY (Hz)

G A I N (d B )

2-7

100100k 10k 1k MAX4464/MAX4474

SMALL-SIGNAL NORMALIZED GAIN

vs. FREQUENCY

-4-60-23-3-51-1FREQUENCY (Hz)G A I N (d B )

2-7

100100k

10k 1k MAX4464/MAX4474

LARGE-SIGNAL NORMALIZED GAIN

vs. FREQUENCY

-4-60-23

-3-51-1FREQUENCY (Hz)

G A I N (d B )

Typical Operating Characteristics (continued)

(V DD = +5V, V SS = 0, V CM = 0, R L = 100k ?to V DD /2, T A = +25°C, unless otherwise noted.)

M A X 4464/M A X 4470/M A X 4471/M A X 4472/M A X 4474

Single/Dual/Quad, +1.8V/750nA, SC70, Rail-to-Rail Op Amps 10______________________________________________________________________________________

Figure 2. Compensation for Feedback Node Capacitance

Applications Information

Ground Sensing

The common-mode input range of the MAX4470 family extends down to ground, and offers excellent common-mode rejection. These devices are guaranteed not to undergo phase reversal when the input is overdriven.

Power Supplies and Layout

The MAX4470 family operates from a single +1.8V to +5.5V power supply. Bypass power supplies with a 0.1μF ceramic capacitor placed close to the V DD pin. Ground layout improves performance by decreasing the amount of stray capacitance and noise at the op amp ’s inputs and outputs. To decrease stray capacitance, mini-mize PC board lengths and resistor leads, and place external components close to the op amps ’ pins.

Bandwidth

The MAX4470/MAX4471/MAX4472 are internally compensated for unity-gain stability and have a typical gain-bandwidth of 9kHz. The MAX4464/MAX4474 have a 40kHz typical gain-bandwidth and are stable for a gain of +5V/V or greater.

Stability

The MAX4464/MAX4470/MAX4471/MAX4472/MAX4474maintain stability in their minimum gain configuration while driving capacitive loads. Although this product family is primarily designed for low-frequency applica-tions, good layout is extremely important because low-power requirements demand high-impedance circuits.The layout should also minimize stray capacitance at the amplifier inputs. However some stray capacitance may be unavoidable, and it may be necessary to add a 2pF to 10pF capacitor across the feedback resistor as shown in Figure 2. Select the smallest capacitor value that ensures stability.

Chip Information

MAX4470/MAX4464 TRANSISTOR COUNT: 147MAX4471/MAX4474 TRANSISTOR COUNT: 293MAX4472 TRANSISTOR COUNT: 585PROCESS: BiCMOS

MAX4464/MAX4470/MAX4471/MAX4472/MAX4474

Single/Dual/Quad, +1.8V/750nA, SC70,

Rail-to-Rail Op Amps

______________________________________________________________________________________11

M A X 4464/M A X 4470/M A X 4471/M A X 4472/M A X 4474

Single/Dual/Quad, +1.8V/750nA, SC70, Rail-to-Rail Op Amps

S C 70, 5L .E P S

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/0a10505509.html,/packages .

MAX4464/MAX4470/MAX4471/MAX4472/MAX4474

Single/Dual/Quad, +1.8V/750nA, SC70,

Rail-to-Rail Op Amps

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/0a10505509.html,/packages .

M A X 4464/M A X 4470/M A X 4471/M A X 4472/M A X 4474

Single/Dual/Quad, +1.8V/750nA, SC70, Rail-to-Rail Op Amps 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.

14____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600?2003 Maxim Integrated Products

Printed USA

is a registered trademark of Maxim Integrated Products.

S O I C N .E P S

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/0a10505509.html,/packages .