REF191ESZ Analog Devices Inc, REF191ESZ Datasheet

REF191ESZ

Manufacturer Part Number

REF191ESZ

Description

IC VOLT REF LDO 2.048V 8SOIC

Manufacturer

Analog Devices Inc

Series

REF19r

Type

Voltage Referencer

Datasheets

1.REF195GPZ.pdf (28 pages)

2.REF191ESZ.pdf (7 pages)

Specifications of REF191ESZ

Temperature Coefficient

5ppm/°C

Reference Type

Series

Voltage - Output

2.048V

Tolerance

±2mV

Voltage - Input

3 ~ 15 V

Number Of Channels

Current - Quiescent

45µA

Current - Output

30mA

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

8-SOIC (3.9mm Width)

Topology

Series

Input Voltage

3V To 15V

Reference Voltage

2.048V

Reference Voltage Tolerance

2mV

Voltage Reference Case Style

SOIC

No. Of Pins

Current, Output

30 mA

Current, Supply

45 μA

Package Type

SOIC-8

Regulation, Line

5 ppm/V

Regulation, Load

5 ppm/mA

Regulator Type

Low Dropout

Resistance, Thermal, Junction To Case

43 °C/W

Temperature, Operating, Range

-40 to +85 °C

Voltage, Dropout

1.25 V

Voltage, Noise

20 μVp-p

Voltage, Output

2.048 V

Voltage, Supply

3.3 V

Fixed / Adjust / Prog

Precision

Output Voltage (max)

2.048V

Reference Voltage Accuracy (max)

Line Regulation

4ppm/V

Load Regulation

10ppm/mA

Input Voltage (max)

18V

Operating Temp Range

-40C to 85C

Operating Temperature Classification

Industrial

Mounting

Surface Mount

Pin Count

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Current - Cathode

Lead Free Status / Rohs Status

RoHS Compliant part Electrostatic Device

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

REF191ESZ

Manufacturer:

Quantity:

6 223

Company:

Meier Automation Equipment Co., Limited

Part Number:

REF191ESZ

Manufacturer:

ADI/亚德诺

Quantity:

20 000

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FEATURES

Initial accuracy: ±2 mV maximum

Temperature coefficient: 5 ppm/°C maximum

Low supply current: 45 μA maximum

Sleep mode: 15 μA maximum

Low dropout voltage

Load regulation: 4 ppm/mA

Line regulation: 4 ppm/V

High output current: 30 mA

Short-circuit protection

APPLICATIONS

Portable instruments

ADCs and DACs

Smart sensors

Solar powered applications

Loop-current-powered instruments

GENERAL DESCRIPTION

The REF19x series precision band gap voltage references use a

patented temperature drift curvature correction circuit and

laser trimming of highly stable, thin-film resistors to achieve a

very low temperature coefficient and high initial accuracy.

The REF19x series is made up of micropower, low dropout

voltage (LDV) devices, providing stable output voltage from

supplies as low as 100 mV above the output voltage and

consuming less than 45 μA of supply current. In sleep mode,

which is enabled by applying a low TTL or CMOS level to the

SLEEP pin, the output is turned off and supply current is

further reduced to less than 15 μA.

The REF19x series references are specified over the extended

industrial temperature range (−40°C to +85°C) with typical

performance specifications over −40°C to +125°C for

applications, such as automotive.

All electrical grades are available in an 8-lead SOIC package; the

PDIP and TSSOP packages are available only in the lowest

electrical grade.

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

Low Dropout Voltage References

TEST PINS

Test Pin 1 and Test Pin 5 are reserved for in-package Zener zap.

To achieve the highest level of accuracy at the output, the Zener

zapping technique is used to trim the output voltage. Because

each unit may require a different amount of adjustment, the

resistance value at the test pins varies widely from pin to pin

and from part to part. The user should leave Pin 1 and Pin 5

unconnected.

Table 1. Nominal Output Voltage

Part Number

REF191

REF192

REF193

REF194

REF195

REF196

REF198

Figure 1. 8-Lead SOIC_N and TSSOP Pin Configuration

SLEEP

Figure 2. 8-Lead PDIP Pin Configuration

NOTES

1. NC = NO CONNECT.

2. TP PINS ARE FACTORY TEST

NOTES

1. NC = NO CONNECT.

2. TP PINS ARE FACTORY TEST

Precision Micropower,

GND

POINTS, NO USER CONNECTION.

(S Suffix and RU Suffix)

Nominal Output Voltage (V)

2.048

2.50

3.00

4.50

5.00

3.30

4.096

(Not to Scale)

REF19x

SERIES

TOP VIEW

REF19x

SERIES

TOP VIEW

(P Suffix)

REF19x Series

OUTPUT

Related parts for REF191ESZ

REF191ESZ Summary of contents

Page 1

FEATURES Initial accuracy: ±2 mV maximum Temperature coefficient: 5 ppm/°C maximum Low supply current: 45 μA maximum Sleep mode: 15 μA maximum Low dropout voltage Load regulation: 4 ppm/mA Line regulation: 4 ppm/V High output current Short-circuit protection ...

Page 2

REF19x Series SPECIFICATIONS ELECTRICAL CHARACTERISTICS—REF191 @ 3 25°C, unless otherwise noted Table 2. Parameter Symbol 1 INITIAL ACCURACY Grade F Grade G Grade 2 LINE REGULATION ΔV /ΔV ...

Page 3

ELECTRICAL CHARACTERISTICS—REF191 @ −40°C ≤ +85° 3.3 V, −40°C ≤ T ≤ +85°C, unless otherwise noted Table 3. Parameter 1, 2 TEMPERATURE COEFFICIENT E Grade F Grade 3 G Grade 4 LINE REGULATION E Grade ...

Page 4

REF19x Series ELECTRICAL CHARACTERISTICS—REF191 @ −40°C ≤ 3.3 V, −40°C ≤ T ≤ +125°C, unless otherwise noted Table 4. Parameter 1, 2 TEMPERATURE COEFFICIENT E Grade F Grade 3 G Grade 4 LINE REGULATION ...

Page 5

REF19x Series OUTLINE DIMENSIONS 0.400 (10.16) 0.365 (9.27) 0.355 (9.02 0.280 (7.11) 0.250 (6.35) 1 0.240 (6.10) 4 PIN 1 0.100 (2.54) BSC 0.060 (1.52) 0.210 MAX (5.33) MAX 0.015 0.150 (3.81) (0.38) 0.015 (0.38) MIN 0.130 (3.30) ...

Page 6

... ORDERING GUIDE Model Temperature Range REF191ES −40°C to +85°C REF191ES-REEL −40°C to +85°C 1 REF191ESZ −40°C to +85°C 1 REF191ESZ-REEL −40°C to +85°C REF191GS −40°C to +85°C REF191GS-REEL −40°C to +85°C 1 REF191GSZ −40°C to +85°C 1 REF191GSZ-REEL − ...

Page 7

REF19x Series Model Temperature Range REF195FS-REEL −40°C to +85°C 1 REF195FSZ −40°C to +85°C 1 REF195FSZ-REEL −40°C to +85°C REF195GP −40°C to +85°C REF195GPZ 1 −40°C to +85°C REF195GRU −40°C to +85°C REF195GRU-REEL7 −40°C to +85°C 1 REF195GRUZ −40°C to ...

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