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MAX6174AASA-T中文资料

General Description

The MAX6173–MAX6177 are low-noise, high-precision voltage references. The devices feature a proprietary temperature-coefficient curvature-correction circuit and laser-trimmed thin-film resistors that result in a very low 3ppm/°C temperature coefficient and excellent ±0.06%initial accuracy. The MAX6173–MAX6177 provide a TEMP output where the output voltage is proportional to the die temperature, making the devices suitable for a wide variety of temperature-sensing applications. The devices also provide a TRIM input, allowing fine trimming of the output voltage with a resistive divider network. Low temperature drift and low noise make the devices ideal for use with high-resolution A/D or D/A converters.

The MAX6173–MAX6177 provide accurate preset +2.5V,+3.3V, +4.096V, +5.0V, and +10V reference voltages and accept input voltages up to +40V. The devices draw 320μA (typ) of supply current and source 30mA or sink 2mA of load current. The MAX6173–MAX6177 use bandgap technology for low-noise performance and excellent accuracy. The MAX6173–MAX6177 do not require an output bypass capacitor for stability, and are stable with capacitive loads up to 100μF. Eliminating the output bypass capacitor saves valuable board area in space-critical applications.

The MAX6173–MAX6177 are available in an 8-pin SO package and operate over the automotive (-40°C to +125°C) temperature range.

Applications

A/D Converters Voltage Regulators D/A Converters Threshold Detectors

Digital Voltmeters

Features

?Wide (V OUT + 2V) to +40V Supply Voltage Range ?Excellent Temperature Stability: 3ppm/°C (max)?Tight Initial Accuracy: 0.05% (max)?Low Noise: 3.8μV P-P (typ at 2.5V Output)?Sources up to 30mA Output Current ?Low Supply Current: 450μA (max at +25°C)?Linear Temperature Transducer Voltage Output ?+2.5V, +3.3V, +4.096V, +5.0V, or +10V Output Voltages ?Wide Operating Temperature Range: -40°C to +125°C ?No External Capacitors Required for Stability ?Short-Circuit Protected

MAX6173–MAX6177

High-Precision Voltage References with

Temperature Sensor

________________________________________________________________Maxim Integrated Products 1

19-3249; Rev 0; 5/04

For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at https://www.sodocs.net/doc/5a18239472.html,.

Pin Configuration appears at end of data sheet.

Ordering Information/Selector Guide

Typical Operating Circuit

M A X 6173–M A X 6177

High-Precision Voltage References with Temperature Sensor

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.

IN to GND...............................................................-0.3V to +42V OUT, TRIM, TEMP to GND...........................-0.3V to (V IN + 0.3V)Output Short Circuit to GND.....................................................5s Continuous Power Dissipation (T A = +70°C)

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

Operating Temperature Range ........................-40°C to +125°C Junction Temperature .....................................................+150°C Storage Temperature Range ............................-65°C to +150°C Lead Temperature (soldering, 10s) ................................+300°C

ELECTRICAL CHARACTERISTICS—MAX6173 (V OUT = 2.5V)

MAX6173–MAX6177

High-Precision Voltage References with

Temperature Sensor

_______________________________________________________________________________________3

ELECTRICAL CHARACTERISTICS—MAX6177 (V OUT = 3.3V)

M A X 6173–M A X 6177

High-Precision Voltage References with Temperature Sensor 4_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—MAX6174 (V OUT = 4.096V)

MAX6173–MAX6177

High-Precision Voltage References with

Temperature Sensor

_______________________________________________________________________________________5

ELECTRICAL CHARACTERISTICS—MAX6175 (V OUT = 5.0V)

M A X 6173–M A X 6177

High-Precision Voltage References with Temperature Sensor 6_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—MAX6176 (V OUT = 10V)

Note 1:All devices are 100% production tested at T A = +25°C and guaranteed by design over T A = T MIN to T MAX , as specified.Note 2:Temperature coefficient is defined as ?V OUT divided by the temperature range.Note 3:Line and load regulation specifications do not include the effects of self-heating.

Note 4:Thermal hysteresis is defined as the change in +25°C output voltage before and after cycling the device from T MAX to T MIN .

Typical Operating Characteristics

(V IN = +5V for V OUT = +2.5V, V IN = +15V for V OUT = +10V, I OUT = 0, T A = +25°C, unless otherwise noted.)

MAX6173–MAX6177

High-Precision Voltage References with

Temperature Sensor

_______________________________________________________________________________________7

2.498

2.500

2.499

2.5012.502OUTPUT VOLTAGE vs. TEMPERATURE

(V OUT = 2.5V)

TEMPERATURE (°C)O U T P U T V O L T A G E (V )

-50

-25

100

125

9.993

9.9989.995

10.0019.9999.99610.0029.9979.99410.00010.003OUTPUT VOLTAGE vs. TEMPERATURE

(V OUT = 10V)

TEMPERATURE (°C)

O U T P U T V O L T A G E (V )-50

-25

100

125

0.500.25

-0.25

-0.50

LOAD REGULATION vs.SOURCE CURRENT (V OUT = 2.5V)

SOURCE CURRENT (mA)

O U T P U T V O L T A G E C H A N G E (m V )

0.500.25

-0.25

-0.50

LOAD REGULATION

vs. SOURCE CURRENT (V OUT = 10V)

SOURCE CURRENT (mA)

O U T P U T V O L T A G E C H A N G E (m V )

1.000.750.50

0.25-0.250

-0.50

0 1.0

0.5 1.5

2.0

LOAD REGULATION

vs. SINK CURRENT (V OUT = 2.5V)

SINK CURRENT (mA)

O U T P U T V O L T A G E C H A N G E (m V )

2.01.5

1.00.5-0.50-1.0

1.0

0.5

1.5

2.0

LOAD REGULATION

vs. SINK CURRENT (V OUT = 10V)

SINK CURRENT (mA)

O U T P U T V O L T A G E C H A N G E (m V )

060

100LINE REGULATION vs. TEMPERATURE

(V OUT = 2.5V)

INPUT VOLTAGE (V)

O U T P U T V O L T A G E C H A N G E (μV )

15050100200250

300LINE REGULATION vs. TEMPERATURE

(V OUT = 10V)

INPUT VOLTAGE (V)

O U T P U T V O L T A G E C H A N G E (μV )

0.5

1.5

1.0

2.0

2.5

MINIMUM INPUT-OUTPUT DIFFERENTIAL vs. SOURCE CURRENT (V OUT = 2.5V)

SOURCE CURRENT (mA)

D R O P O U T V O L T A G

E (V )

Typical Operating Characteristics (continued)

(V IN = +5V for V OUT = +2.5V, V IN = +15V for V OUT = +10V, I OUT = 0, T A = +25°C, unless otherwise noted.)

M A X 6173–M A X 6177

High-Precision Voltage References with Temperature Sensor 8_______________________________________________________________________________________

0.5

1.5

1.0

2.0

2.5MINIMUM INPUT-OUTPUT DIFFERENTIAL vs. SOURCE CURRENT (V OUT = 10V)

SOURCE CURRENT (mA)

D R O P O U T V O L T A G

E (V )

-140

-100-120

-60-80-20-4000.001

0.110.01101001000POWER-SUPPLY REJECTION RATIO vs. FREQUENCY (V OUT = 2.5V)

M A X 6173 t o c 11

FREQUENCY (kHz)P S R R (d B )

-120

-100-60-80-20-400

0.001

0.110.01101001000

POWER-SUPPLY REJECTION RATIO vs. FREQUENCY (V OUT = 10V)

M A X 6173 t o c 12

FREQUENCY (kHz)

P S R R (d B )

0.001

0.1

0.01

100

0.1

0.01

100

1000

OUTPUT IMPEDANCE vs. FREQUENCY

(V OUT = 2.5V)

M A X 6173 t o c 13

FREQUENCY (kHz)

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

010050

200150250300350400

SUPPLY CURRENT vs. INPUT VOLTAGE

(V OUT = 2.5V)

INPUT VOLTAGE (V)

S U P P L Y C U R R E N T (μA )

10050200150250300350400

0101552025303540

SUPPLY CURRENT vs. INPUT VOLTAGE

(V OUT

= 10V)

INPUT VOLTAGE (V)

S U P P L Y C U R R E N T (μA )

250

300

275

325

350

-50

-25

100

125

SUPPLY CURRENT vs. TEMPERATURE

(V OUT = 2.5V)

M A X 6173 t o c 16

TEMPERATURE (°C)

S U P P L Y C U R R E N T (μA )

250

325

300

275

350375

-50

-25

100

125

SUPPLY CURRENT vs. TEMPERATURE

(V OUT = 10V)

M A X 6173 t o c 17

TEMPERATURE (°C)

S U P P L Y C U R R E N T (μA )

400

600

500

700

800

-50

-25

100

125

TEMP VOLTAGE

vs. TEMPERATURE (V OUT = 2.5V)

M A X 6173 t o c 18

TEMPERATURE (°C)

T E M P V O L T A G E (m V )

Typical Operating Characteristics (continued)

(V IN = +5V for V OUT = +2.5V, V IN = +15V for V OUT = +10V, I OUT = 0, T A = +25°C, unless otherwise noted.)

MAX6173–MAX6177

High-Precision Voltage References with

Temperature Sensor

_______________________________________________________________________________________

400

600

500

800700

900-50

-25

100

125

TEMP VOLTAGE

vs. TEMPERATURE (V OUT = 10V)

M A X 6173 t o c 19

TEMPERATURE (°C)

T E M P V O L T A G E (m V )

2.35

2.502.45

2.402.602.552.65

0.5

1.0

1.5

2.0

2.5

OUTPUT VOLTAGE

vs. TRIM VOLTAGE (V OUT = 2.5V)

M A X 6173 t o c 20

TRIM VOLTAGE (V)

O U T P U T V O L T A G E (V ) 2.498

2.500

2.499

2.501

2.502

200

400

600

800

1000

LONG-TERM STABILITY vs. TIME

(V OUT = 2.500V)

TIME (hours)

V O U T (V )

9.998

10.000

9.999

10.00110.002

200

400

600

800

1000

LONG-TERM STABILITY vs. TIME

(V OUT = 10.0V)

TIME (hours)

V O U T (V )

1000

100

OUTPUT-VOLTAGE NOISE DENSITY vs. FREQUENCY (V OUT = 2.5V)

M A X 6173 t o c 23

FREQUENCY (Hz)

O U T P U T V O L T A G E -N O I S E D E N S I T Y (n V /√H z )

0.1

1001000

1010,000

1000

100

OUTPUT-VOLTAGE NOISE DENSITY vs. FREQUENCY (V OUT = 10V)

M A X 6173 t o c 24

FREQUENCY (Hz)

O U T P U T V O L T A G E -N O I S E D E N S I T Y (n V /√H z )

0.1

1001000

100.1Hz TO 10Hz OUTPUT NOISE

(V OUT = 2.5V)

MAX6173 toc25

1μV/div 1s/div 0.1Hz TO 10Hz OUTPUT NOISE

(V OUT = 10V)

MAX6173 toc26

4μV/div

1s/div

Typical Operating Characteristics (continued)

(V IN = +5V for V OUT = +2.5V, V IN = +15V for V OUT = +10V, I OUT = 0, T A = +25°C, unless otherwise noted.)

M A X 6173–M A X 6177

High-Precision Voltage References with Temperature Sensor 10______________________________________________________________________________________

LOAD TRANSIENT

(V OUT = 2.5V, C OUT = 0, 0 TO 20mA)

MAX6173 toc27

I OUT

V OUT

AC-COUPLED 1V/div

20mA 10μs/div

LOAD TRANSIENT

(V OUT = 10V, C OUT = 0, 0 TO 20mA)

MAX6173 toc28

I OUT V OUT

AC-COUPLED 1V/div

20mA 10μs/div

LOAD TRANSIENT

(V OUT = 2.5V, C OUT = 1μF, 0 TO +20mA)

MAX6173 toc29

I OUT V OUT

AC-COUPLED 50mV/div 0

20mA

200μs/div LOAD TRANSIENT

(V OUT = 10V, C OUT = 1μF, 0 TO 20mA)

MAX6173 toc30

I OUT V OUT

AC-COUPLED 100mV/div

20mA

100μs/div

LOAD TRANSIENT

(V OUT = 2.5V, C OUT = 0, 0 TO -2mA)

MAX6173 toc31

I OUT V OUT

AC-COUPLED 200mV/div 0-2mA

40μs/div LOAD TRANSIENT

(V OUT = 10V, C OUT = 0, 0 TO -2mA)

MAX6173 toc32

I OUT V OUT

AC-COUPLED 20mV/div

0-2mA

200μs/div

Typical Operating Characteristics (continued)

(V IN = +5V for V OUT = +2.5V, V IN = +15V for V OUT = +10V, I OUT = 0, T A = +25°C, unless otherwise noted.)

MAX6173–MAX6177

High-Precision Voltage References with

Temperature Sensor

______________________________________________________________________________________11

LOAD TRANSIENT

(V OUT = 2.5V, C OUT = 1μF, 0 TO -2mA)

MAX6173 toc33I OUT V OUT

AC-COUPLED 20mV/div 0-2mA

400μs/div LOAD TRANSIENT

(V OUT = 10V, C OUT = 1μF, 0 TO -2mA)

MAX6173 toc34

I OUT V OUT

AC-COUPLED 5mV/div

0-2mA

400μs/div

LINE TRANSIENT (V OUT = 2.5V)

MAX6173 toc35

V IN V OUT

AC-COUPLED 200mV/div

5.5V 4.5V

10μs/div

C OUT = 0

LINE TRANSIENT (V OUT = 10V)

MAX6173 toc36

V IN 1V/div V OUT

AC-COUPLED 200mV/div

15.5V 14.5V

2μs/div

TURN-ON TRANSIENT (V OUT = 2.5V, C OUT = 0)

MAX6173 toc37

V IN 2V/div V OUT 1V/div GND

GND

10μs/div

C OUT = 0

TURN-ON TRANSIENT (V OUT = 2.5V, C OUT = 1μF)

MAX6173 toc38

V IN 2V/div V OUT 1V/div GND

GND

40μs/div

M A X 6173–M A X 6177

High-Precision Voltage References with Temperature Sensor 12______________________________________________________________________________________

Detailed Description

The MAX6173–MAX6177 precision voltage references provide accurate preset +2.5V, +3.3V, +4.096V, +5.0V,and +10V reference voltages from up to +40V input volt-ages. These devices feature a proprietary temperature-coefficient curvature-correction circuit and laser-trimmed thin-film resistors that result in a very low 3ppm/°C tem-perature coefficient and excellent 0.05% initial accuracy.The MAX6173–MAX6177 draw 340μA of supply current and source 30mA or sink 2mA of load current.

Trimming the Output Voltage

Trim the factory-preset output voltage on the MAX6173–MAX6177by placing a resistive divider net-work between OUT, TRIM, and GND.

Use the following formula to calculate the change in output voltage from its preset value:

?V OUT = 2 x (V TRIM - V TRIM (open)) x k where:

V TRIM = 0V to V OUT

V TRIM (open)= V OUT (nominal) / 2 (typ)k = ±6% (typ)

For example, use a 50k ?potentiometer (such as the MAX5436) between OUT, TRIM, and GND with the potentiometer wiper connected to TRIM (see Figure 2).As the TRIM voltage changes from V OUT to GND, the output voltage changes accordingly. Set R2 to 1M ?or less. Currents through resistors R1 and R2 add to the quiescent supply current.

Typical Operating Characteristics (continued)

(V IN = +5V for V OUT = +2.5V, V IN = +15V for V OUT = +10V, I OUT = 0, T A = +25°C, unless otherwise noted.)

TURN-ON TRANSIENT (V OUT = 10V, C OUT = 0)

MAX6173 toc39V IN 5V/div V OUT 5V/div GND

GND

100μs/div

TURN-ON TRANSIENT (V OUT = 10V, C OUT = 1μF)

MAX6173 toc40

V IN 5V/div

V OUT 5V/div GND

GND

200μs/div

Pin Description

MAX6173–MAX6177

High-Precision Voltage References with

Temperature Sensor

______________________________________________________________________________________13

Temp Output

The MAX6173–MAX6177 provide a temperature output proportional to die temperature. TEMP can be calculated from the following formula:

TEMP (V) = T J (°K) x n

where T J = the die temperature,n = the temperature multiplier,

T A = the ambient temperature.

Self-heating affects the die temperature and conversely,the TEMP output. The TEMP equation assumes the output is not loaded. If device power dissipation is negligible,then T J ≈T A .

Applications Information

Bypassing/Output Capacitance

For the best line-transient performance, decouple the

input with a 0.1μF ceramic capacitor as shown in the Typical Operating Circuit . Place the capacitor as close to IN as possible. When transient performance is less important, no capacitor is necessary.

The MAX6173–MAX6177do not require an output capacitor for stability and are stable with capacitive loads up to 100μF. In applications where the load or the

supply can experience step changes, a larger output capacitor reduces the amount of overshoot (under-shoot) and improves the circuit’s transient response.Place output capacitors as close to the devices as pos-sible for best performance.

Supply Current

The MAX6173–MAX6177consume 320μA (typ) of qui-escent supply current. This improved efficiency reduces power dissipation and extends battery life.

Thermal Hysteresis

Thermal hysteresis is the change in the output voltage at T A = +25°C before and after the device is cycled over its entire operating temperature range. Hysteresis is caused by differential package stress appearing across the bandgap core transistors. The typical ther-mal hysteresis value is 120ppm.

Turn-On Time

The MAX6173–MAX6177typically turn on and settle to within 0.1% of the preset output voltage in 150μs (2.5V output). The turn-on time can increase up to 150μs with the device operating with a 1μF load.

Short-Circuited Outputs

The MAX6173–MAX6177 feature a short-circuit-protected output. Internal circuitry limits the output current to 60mA when short circuiting the output to ground. The output current is limited to 3mA when short circuiting the output to the input.

Figure 1. Temperature Coefficient vs. Operating Temperature Range for a 1 LSB Maximum Error

M A X 6173–M A X 6177

High-Precision Voltage References with Temperature Sensor 14______________________________________________________________________________________

Temperature Coefficient vs. Operating

Temperature Range for a

1 LSB Maximum Error

In a data converter application, the reference voltage of the converter must stay within a certain limit to keep the error in the data converter smaller than the resolu-tion limit through the operating temperature range.Figure 1 shows the maximum allowable reference-volt-age temperature coefficient to keep the conversion error to less than 1 LSB, as a function of the operating temperature range (T MAX - T MIN ) with the converter resolution as a parameter. The graph assumes the ref-erence-voltage temperature coefficient as the only parameter affecting accuracy.

In reality, the absolute static accuracy of a data con-verter is dependent on the combination of many para-meters such as integral nonlinearity, differential nonlinearity, offset error, gain error, as well as voltage-reference changes.

Figure 2. Applications Circuit Using the MAX5436 Potentiometer

Chip Information

TRANSISTOR COUNT: 429PROCESS: BiCMOS

MAX6173–MAX6177

High-Precision Voltage References with

Temperature Sensor

Maxim c annot assume responsibility for use of any c irc uitry other than c irc uitry entirely embodied in a Maxim produc t. No c irc uit patent lic enses 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 ____________________15?2004 Maxim Integrated Products

Printed USA

is a registered trademark of Maxim Integrated Products.

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.sodocs.net/doc/5a18239472.html,/packages .)

S O I C N .E P S

MAX6174AASA-T中文资料

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