Analog Devices AD1580BRT-REEL7, AD1580BRT-REEL, AD1580BRT, AD1580ART-REEL7, AD1580ART-REEL Datasheet

PIN CONFIGURATION

SOT-23 Package

1

2

NC = NO CONNECT

V+

NC (OR V–)

V–

3

TOP

VIEW

QUANTITY

TEMPERATURE DRIFT – ppm/°C

0

–40

5

10

15

20

25

30

35

40

45

50

–30 –20 –10

0

10 20 30 40

Reverse Voltage Temperature Drift Distribution

QUANTITY

OUTPUT ERROR – mV

0

–10

50

100

150

200

250

300

–8 –6 –4 –2 0 2 4 10

68

Reverse Voltage Error Distribution

REV. 0

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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.

a

1.2 V Micropower, Precision
Shunt Voltage Reference

© Analog Devices, Inc., 1995

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] Fax: [phone]

AD1580

FEATURES
Wide Operating Range: 50 mA–10 mA
Initial Accuracy: 60.1% max
Temperature Drift: 650 ppm/8C max
Output Impedance: 0.5 V max
Wideband Noise (10 Hz–10 kHz): 20 mV rms
Operating Temperature Range: –408C to +858C
High ESD Rating

4 kV Human Body Model
400 V Machine Model

Compact, Surface-Mount, SOT-23 Package

GENERAL DESCRIPTION

The AD1580 is a low cost, two-terminal (shunt), precision
bandgap reference. It provides an accurate 1.225 V output for
input currents between 50 µA and 10 mA.

The AD1580’s superior accuracy and stability is made possible
by the precise matching and thermal tracking of on-chip
components. Proprietary curvature correction design techniques
have been used to minimize the nonlinearities in the voltage
output temperature characteristics. The AD1580 is stable with
any value of capacitive load.

The low minimum operating current makes the AD1580 ideal
for use in battery powered 3 V or 5 V systems. However, the
wide operating current range means that the AD1580 is
extremely versatile and suitable for use in a wide variety of high
current applications.

The AD1580 is available in two grades, A and B, both of which
are provided in an SOT-23 package, the smallest surface mount
package available on the market. Both grades are specified over
the industrial temperature range of –40°C to +85°C.

TARGET APPLICATIONS

1. Portable, Battery-Powered Equipment:
Cellular Phones, Notebook Computers, PDAs, GPS and
DMM.

2. Computer Workstations
Suitable for use with a wide range of video RAMDACs.

3. Smart Industrial Transmitters

4. PCMCIA Cards.

5. Automotive.

6. 3 V/5 V 8–12-Bit Data Converters.

REV. 0

–2–

AD1580–SPECIFICA TIONS

Model AD1580A AD1580B

Min Typ Max Min Typ Max Units

Reverse Voltage Output 1.215 1.225 1.235 1.224 1.225 1.226 V
Reverse Voltage Temperature Drift

–40

°C to +85°C 100 50 ppm/°C

Minimum Operating Current, T

MIN

to T

MAX

50 50 µA

Reverse Voltage

Change with

Reverse

Current

50 µA < I

IN

< 10 mA, T

MIN

to T

MAX

2.5 5 2.5 5 mV

50 µA < IIN < 1 mA, T

MIN

to T

MAX

0.5 0.5 mV

Dynamic Output Impedance (∆VR/∆IR)

IIN = 1 mA ±100 µA (f = 120 Hz) 0.4 1 0.4 0.5 Ω

OUTPUT NOISE

RMS Noise Voltage: 10 Hz to 10 kHz 20 20 µV

rms

Low Frequency Noise Voltage: 0.1 Hz to 10 Hz 5 5µV

p-p

Turn-On Settling Time to 0.1%

1

55µs

Output Voltage Hysteresis

2

80 80 µV

Temperature Range

Specified Performance, T

MIN

to T

MAX

–40 +85 –40 +85

°C

Operating Range

3

–55 +125 –55 +125

°C

NOTES

1

Measured with no load capacitor.

2

Output hysteresis is defined as the change in the +25°C output voltage after a temperature excursion to +85°C and then to –40°C.

3

The operating temperature range is defined as the temperature extremes at which the device will continue to function. Parts may deviate from their specified
performance.

Specifications subject to change without notice.

(@ TA = +258C, IIN = 100 mA, unless otherwise noted)

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although
the AD1580 features proprietary ESD protection circuitry, permanent damage may occur on
devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are
recommended to avoid performance degradation or loss of functionality.

WARNING!

ESD SENSITIVE DEVICE

ABSOLUTE MAXIMUM RATINGS

1

Reverse Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 mA

Forward Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA

Internal Power Dissipation

2

SOT-23 (RT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 Watts

Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C

Operating Temperature Range

AD1580/RT . . . . . . . . . . . . . . . . . . . . . . . –55°C to +125°C

Lead Temperature, Soldering

Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . +215°C

Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . +220°C

ESD Susceptibility

3

Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . 4 kV

Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400 V

NOTES

1

Stresses above those listed under “Absolute Maximum Ratings” may cause
permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those indicated in
the operational section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.

2

Specification is for device in free air at +25°C: SOT-23 Package: θJA = 300°C/Watt.

3

The human body model is a 100 pF capacitor discharged through 1.5 kΩ. For the
machine model, a 200 pF capacitor is discharged directly into the device.

ORDERING GUIDE

Initial Output Temperature Package

Model Error Coefficient Option

AD1580ART 10 mV 100 ppm/°CRT
AD1580ART-REEL

1

10 mV 100 ppm/°CRT

AD1580ART-REEL7

2

10 mV 100 ppm/°CRT
AD1580BRT 1 mV 50 ppm/°CRT
AD1580BRT-REEL

1

1 mV 50 ppm/°CRT
AD1580BRT-REEL721 mV 50 ppm/°CRT

NOTES

1

Provided on a 13-inch reel containing 7,000 pieces.

2

Provided on a 7-inch reel containing 2,000 pieces.

PACKAGE BRANDING INFORMATION

Four marking fields identify the device generic, grade, and date
of processing. The first field is the product identifier. A “0”
identifies the generic as the AD1580. The second field indicates
the device grade; “A” or “B.” In the third field a numeral or
letter indicates a calendar year; “5” for 1995, “A” for 2001. In
the fourth field, letters A-Z represent a two week window within
the calendar year; starting with “A” for the first two weeks of
January.

Typical Performance Characteristics–AD1580

REV. 0

–3–

REVERSE VOLTAGE CHANGE – ppm

TEMPERATURE – °C

–2000

–55

–1000

–500

0

500

1000

–35 –15 5 25 65 85 125105

–1500

45

~20ppm/°C

Figure 1. Output Drift for Different Temperature
Characteristics

4

3

–1

2

1

0

REVERSE VOLTAGE CHANGE – mV

0.1 1010.01

REVERSE CURRENT – mA

TA = 125°C

TA =
–40°C – +85°C

Figure 2. Output Voltage Error vs. Reverse Current

FREQUENCY – Hz

1.0 10 100 1k 10k 100k 1M

600

200

400

NOISE VOLTAGE – nV/

√

Hz

Figure 3. Noise Spectral Density

REVERSE VOLTAGE – V

REVERSE CURRENT – µA

100

0

0 1.40.2 0.4 0.6 0.8 1.0 1.2

40

20

80

60

+85°C

+25°C

–40°C

Figure 4. Reverse Current vs. Reverse Voltage

FORWARD CURRENT – mA

1.0

0

0.01 100

FORWARD VOLTAGE – V

0.1110

0.4

0.2

0.8

0.6

+25°C

+85°C

–40°C

Figure 5. Forward Voltage vs. Forward Current