Datasheet

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General Description

The MAX6161–MAX6168 are precision, low-dropout,

micropower voltage references. These three-terminal

devices operate with an input voltage range from (V

OUT

+ 200mV) to 12.6V and are available with output volt-

age options of 1.25V, 1.8V, 2.048V, 2.5V, 3V, 4.096V,

4.5V, and 5V. They feature a proprietary curvature-cor-

rection circuit and laser-trimmed thin-film resistors that

result in a very low temperature coefficient of 5ppm/°C

(max) and an initial accuracy of ±2mV (max).

Specifications apply to the extended temperature range

(-40°C to +85°C).

The MAX6161–MAX6168 typically draw only 100µA of

supply current and can source 5mA (4mA for

MAX6161) or sink 2mA of load current. Unlike conven-

tional shunt-mode (two-terminal) references that waste

supply current and require an external resistor, these

devices offer a supply current that is virtually indepen-

dent of the supply voltage (8µA/V variation) and do not

require an external resistor. Additionally, the internally

compensated devices do not require an external com-

pensation capacitor. Eliminating the external compen-

sation capacitor saves valuable board area in

space-critical applications. A low-dropout voltage and

a supply-independent, ultra-low supply current make

these devices ideal for battery-operated, high-perfor-

mance, low-voltage systems.

The MAX6161–MAX6168 are available in 8-pin SO

packages.

________________________Applications

Analog-to-Digital Converters (ADCs)

Portable Battery-Powered Systems

Notebook Computers

PDAs, GPS, DMMs

Cellular Phones

Precision +3V/+5V Systems

____________________________Features

♦ ±2mV (max) Initial Accuracy

♦ 5ppm/°C (max) Temperature Coefficient

♦ 5mA Source Current at 0.9mV/mA

♦ 2mA Sink Current at 2.5mV/mA

♦ Stable with 1µF Capacitive Loads

♦ No External Capacitor Required

♦ 100µA (typ) Quiescent Supply Current

♦ 200mV (max) Dropout at 1mA Load Current

♦ Output Voltage Options: 1.25V, 1.8V, 2.048V, 2.5V,

3V, 4.096V, 4.5V, 5V

19-1650; Rev 3; 8/05

MAX6161–MAX6168

Precision, Micropower, Low-Dropout, High-

Output-Current, SO-8 Voltage References

________________________________________________________________ Maxim Integrated Products 1

OUT

N.C.GND

N.C.

N.C.IN

N.C.

TOP VIEW

MAX6161–

MAX6168

___________________Pin Configuration

*Insert the code for the desired initial accuracy and temperature

coefficient (from the Selector Guide) in the blank to complete

the part number.

Typical Operating Circuit and Selector Guide appear at end

of data sheet.

PART*

TEMP RANGE

PIN-

PACKAGE

OUTPUT

VOLTAGE

(V)

MAX6161_ESA

-40°C to +85°C

8 SO 1.250

MAX6162_ESA

-40°C to +85°C

8 SO 2.048

MAX6163_ESA

-40°C to +85°C

8 SO 3.000

MAX6164_ESA

-40°C to +85°C

8 SO 4.096

MAX6165_ESA

-40°C to +85°C

8 SO 5.000

MAX6166_ESA

-40°C to +85°C

8 SO 2.500

MAX6167_ESA

-40°C to +85°C

8 SO 4.500

MAX6168_ESA

-40°C to +85°C

8 SO 1.800

Ordering Information

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.

Summary of content (17 pages)

PAGE 1
9-1650; Rev 3; 8/05 Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References The MAX6161–MAX6168 are precision, low-dropout, micropower voltage references. These three-terminal devices operate with an input voltage range from (VOUT + 200mV) to 12.6V and are available with output voltage options of 1.25V, 1.8V, 2.048V, 2.5V, 3V, 4.096V, 4.5V, and 5V.
PAGE 2
MAX6161–MAX6168 Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References ABSOLUTE MAXIMUM RATINGS Voltages Referenced to GND IN …………............................................................-0.3 to +13.5V OUT……………… ........................................-0.3V to (VIN + 0.3V) Output Short-Circuit Duration to GND or IN (VIN ≤ 6V) ...Continuous Output Short-Circuit Duration to GND or IN (VIN > 6V)…...........60s Continuous Power Dissipation (TA = +70°C) 8-Pin SO (derate 5.
PAGE 3
Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Note 1) PARAMETER Output Voltage SYMBOL VOUT Output Voltage Temperature Coefficient (Note 2) TCVOUT Line Regulation ΔVOUT/ ΔVIN Load Regulation ΔVOUT/ ΔIOUT OUT Short-Circuit Current ISC Long-Term Stability ΔVOUT/ time Output Voltage Hysteresis (Note 3) ΔVOUT/ cycle CONDITIONS MIN TYP MAX MAX6168A 1.798 1.
PAGE 4
MAX6161–MAX6168 Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References ELECTRICAL CHARACTERISTICS—MAX6162 (VOUT = 2.048V) (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Note 1) PARAMETER Output Voltage SYMBOL VOUT CONDITIONS MIN TYP MAX MAX6162A 2.046 2.048 2.050 MAX6162B 2.043 2.048 2.
PAGE 5
Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Note 1) PARAMETER Output Voltage SYMBOL VOUT Output Voltage Temperature Coefficient (Note 2) Dropout Voltage (Note 4) TCVOUT MIN TYP MAX MAX6166A 2.498 2.500 2.502 MAX6166B 2.495 2.500 2.505 MAX6166A 2 5 MAX6166B 4 10 50 200 mV 60 250 µV/V Sourcing: 0 < IOUT < 5mA 0.5 0.
PAGE 6
MAX6161–MAX6168 Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References ELECTRICAL CHARACTERISTICS—MAX6163 (VOUT = 3.000V) (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Note 1) PARAMETER Output Voltage Output Voltage Temperature Coefficient (Note 2) Dropout Voltage (Note 4) SYMBOL VOUT TCVOUT TA = +25°C MIN TYP MAX MAX6163A 2.998 3.000 3.002 MAX6163B 2.995 3.000 3.
PAGE 7
Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Note 1) PARAMETER Output Voltage SYMBOL VOUT Output Voltage Temperature Coefficient (Note 2) Dropout Voltage (Note 4) TCVOUT TA = +25°C MIN TYP MAX MAX6164A 4.094 4.096 4.098 MAX6164B 4.091 4.096 4.
PAGE 8
MAX6161–MAX6168 Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References ELECTRICAL CHARACTERISTICS—MAX6167 (VOUT = 4.500V) (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Note 1) PARAMETER Output Voltage Output Voltage Temperature Coefficient (Note 2) Dropout Voltage (Note 4) SYMBOL VOUT TCVOUT TA = +25°C MIN TYP MAX MAX6167A 4.498 4.500 4.502 MAX6167B 4.495 4.500 4.
PAGE 9
Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References (VIN = +5.5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Note 1) PARAMETER Output Voltage SYMBOL VOUT Output Voltage Temperature Coefficient (Note 2) Dropout Voltage (Note 4) TCVOUT TA = +25°C MIN TYP MAX MAX6165A 4.998 5.000 5.002 MAX6165B 4.995 5.000 5.
PAGE 10
Typical Operating Characteristics (VIN = +5V for MAX6161–MAX6168, VIN = +5.5V for MAX6165, IOUT = 0, TA = +25°C, unless otherwise noted.) (Note 5) MAX6165 OUTPUT VOLTAGE TEMPERATURE DRIFT 1.2500 1.2499 3 TYPICAL PARTS 40 30 5.0005 5.0000 4.9995 4.9990 0 10 25 40 55 -30 4.
PAGE 11
Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References (VIN = +5V for MAX6161–MAX6168, VIN = +5.5V for MAX6165, IOUT = 0, TA = +25°C, unless otherwise noted.) (Note 5) MAX6165 DROPOUT VOLTAGE vs. LOAD CURRENT MAX6161 POWER-SUPPLY REJECTION RATIO vs. FREQUENCY -20 TA = -40°C 0.10 PSRR (dB) TA = +25°C -40 -50 1 2 3 4 -40 -70 -60 -80 -70 -90 0 -30 -50 -60 0 5 -80 0.001 0.01 0.1 1 10 100 1000 0.001 10 0.
PAGE 12
Typical Operating Characteristics (continued) (VIN = +5V for MAX6161–MAX6168, VIN = +5.5V for MAX6165, IOUT = 0, TA = +25°C, unless otherwise noted.) (Note 5) MAX6161 0.1Hz TO 10Hz OUTPUT NOISE VOUT 10μV/div MAX6161/68 toc20 MAX6161/68 toc19 MAX6165 NOISE VOUT 10μV/div 1s/div MAX6161 TURN-ON TRANSIENT (CL = 50pF) MAX6165 TURN-ON TRANSIENT (CL = 50pF) VIN 5V/div VIN 5V/div VOUT 500mV/div VOUT 2V/div 10μs/div 40μs/div MAX6161 LOAD TRANSIENT (IOUT = ±250μA, VIN = 5.
PAGE 13
Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References (VIN = +5V for MAX6161–MAX6168, VIN = +5.5V for MAX6165, IOUT = 0, TA = +25°C, unless otherwise noted.) (Note 5) MAX6165 LOAD TRANSIENT (IOUT = ±250μA, CL = 1μF, VIN = 5.5V) MAX6161 LOAD TRANSIENT (IOUT = ±250μA, VIN = 5.
PAGE 14
MAX6161–MAX6168 Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References Typical Operating Characteristics (continued) (VIN = +5V for MAX6161–MAX6168, VIN = +5.5V for MAX6165, IOUT = 0, TA = +25°C, unless otherwise noted.) (Note 5) MAX6165 LOAD TRANSIENT (IOUT = ±5mA, CL = 0, VIN = 5.5V) MAX6161 LOAD TRANSIENT (VIN = 5.
PAGE 15
Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References PIN NAME FUNCTION 1, 3, 5, 7, 8 N.C. 2 IN 4 GND Ground 6 OUT Reference Output No Connection. Not internally connected. Input Voltage Applications Information Input Bypassing For the best line-transient performance, decouple the input with a 0.1µF ceramic capacitor as shown in the Typical Operating Circuit. Locate the capacitor as close to IN as possible.
PAGE 16
Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References MAX6161–MAX6168 Selector Guide 16 PART OUTPUT VOLTAGE (V) INITIAL ACCURACY (mV) TEMPERATURE COEFFICIENT (ppm/°C) MAX6161A 1.250 ±2 10 MAX6161B 1.250 ±4 15 MAX6168A 1.800 ±2 5 MAX6168B MAX6162A 1.800 2.048 ±5 ±2 10 5 MAX6162B 2.048 ±5 10 MAX6166A 2.500 ±2 5 MAX6166B 2.500 ±5 10 MAX6163A 3.000 ±2 5 MAX6163B 3.000 ±5 10 MAX6164A 4.096 ±2 5 MAX6164B 4.096 ±5 10 MAX6167A 4.
PAGE 17
Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References N E H INCHES MILLIMETERS MAX MIN 0.069 0.053 0.010 0.004 0.014 0.019 0.007 0.010 0.050 BSC 0.150 0.157 0.228 0.244 0.016 0.050 MAX MIN 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 1.27 BSC 3.80 4.00 5.80 6.20 0.40 SOICN .EPS DIM A A1 B C e E H L 1.27 VARIATIONS: 1 INCHES TOP VIEW DIM D D D MIN 0.189 0.337 0.386 MAX 0.197 0.344 0.394 MILLIMETERS MIN 4.80 8.55 9.80 MAX 5.00 8.75 10.