1582A - AD1582A

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AD1582A

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Data Sheet

2.5 V to 5.0 V Micropower, Precision

Series Mode Voltage References

AD1582/AD1583/AD1584/AD1585

FEATURES

Series reference (2.5 V, 3 V, 4.096 V, 5 V)

Low quiescent current: 70 µA maximum

Current output capability: ±5 mA

Wide supply range: VIN = VOUT + 200 mV to 12 V

Wideband noise (10 Hz to 10 kHz): 50 µV rms

Specified temperature range: −40°C to +125°C

Compact, surface-mount SOT-23 package

APPLICATIONS

Portable, battery-powered equipment; for example,

notebook computers, cellular phones, pagers, PDAs, GPSs,

and DMMs

Computer workstations; suitable for use with a wide range

of video RAMDACs

Smart industrial transmitters

PCMCIA cards

Automotive

Hard disk drives

3 V/5 V, 8-bit/12-bit data converters

GENERAL DESCRIPTION

The AD1582/AD1583/AD1584/AD1585 are low cost, low power,

low dropout, precision band gap references. These designs are

available as 3-terminal (series) devices and are packaged in the

compact SOT-23, 3-lead surface-mount package. The versatility

of these references makes them ideal for use in battery-powered

3 V or 5 V systems where there can be wide variations in supply

voltage and a need to minimize power dissipation.

The superior accuracy and temperature stability of the AD1582/

AD1583/AD1584/AD1585 result from the precise matching and

thermal tracking of on-chip components. Patented temperature

drift curvature correction design techniques minimize the

nonlinearities in the voltage output temperature characteristic.

PIN CONFIGURATION

VOUT 1

AD1582/

AD1583/

AD1584/

AD1585

3 VIN

GND 2 TOP VIEW

(Not to Scale)

Figure 1. 3-Lead SOT-23-3 (RT Suffix)

900

800

700

600

SHUNT REFERENCE1

500

400

300

200

100 AD1582 SERIES REFERENCE

2.7

VSUPPLY (V)

13.076kΩ SOURCE RESISTOR.

Figure 2. Supply Current (μA) vs. Supply Voltage (V)

The AD1582/AD1583/AD1584/AD1585 series mode devices

source or sink up to 5 mA of load current and operate efficiently

with only 200 mV of required headroom supply. These parts

draw a maximum 70 μA of quiescent current with only a

1.0 μA/V variation with supply voltage. The advantage of

these designs over conventional shunt devices is extraordinary.

Valuable supply current is no longer wasted through an input

series resistor, and maximum power efficiency is achieved at

all input voltage levels.

The AD1582/AD1583/AD1584/AD1585 are available in two

grades, A and B, and are provided in a tiny footprint, the SOT-

23. All grades are specified over the industrial temperature

range of −40°C to +125°C.

Table 1. AD158x Products, Three Electrical Grades

Electrical

Grade

AD1582

Initial Accuracy

AD1583/AD1585

AD1584

Temperature

Coefficient

(ppm°C)

B 0.08% 0.10%

0.10% 50

A 0.80% 1.00%

0.98% 100

Rev. J

Document Feedback

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.

Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Technical Support

www.analog.com

AD1582/AD1583/AD1584/AD1585

AD1583 SPECIFICATIONS

TA = TMIN to TMAX, VIN = 5 V, unless otherwise noted.

Table 3.

Parameter

OUTPUT VOLTAGE (@ 25°C)

INITIAL ACCURACY ERROR (@ 25°C)

VOERR

OUTPUT VOLTAGE TEMPERATURE DRIFT

TEMPERATURE COEFFICIENT (TCVO)

–40°C < TA < +125°C

0°C < TA < 70°C

MINIMUM SUPPLY HEADROOM (VIN – VOUT)

LOAD REGULATION

0 mA < IOUT < 5 mA (–40°C to +85°C)

0 mA < IOUT < 5 mA (–40°C to +125°C)

–5 mA < IOUT < 0 mA (–40°C to +85°C)

–5 mA < IOUT < 0 mA (–40°C to +125°C)

–0.1 mA < IOUT < +0.1 mA (–40°C to +85°C)

–0.1 mA < IOUT < +0.1 mA (–40°C to +125°C)

LINE REGULATION

VOUT + 200 mV < VIN < 12 V

IOUT = 0 mA

RIPPLE REJECTION (ΔVOUT/ΔVIN)

VIN = 5 V ± 100 mV (f = 120 Hz)

QUIESCENT CURRENT

SHORT-CIRCUIT CURRENT TO GROUND

NOISE VOLTAGE (@ 25°C)

0.1 Hz to 10 Hz

10 Hz to 10 kHz

TURN-ON SETTLING TIME TO 0.1%

CL = 0.2 µF

LONG-TERM STABILITY

1000 Hours @ 25°C

OUTPUT VOLTAGE HYSTERESIS

TEMPERATURE RANGE

Specified Performance (A, B, C)

Operating Performance (A, B, C)

Data Sheet

AD1583A

Min Typ Max

AD1583B

Min Typ Max

Unit

2.970 3.000 3.030 2.997 3.000 3.003 V

−30 +30 −3

+3 mV

−1.0 +1.0 −0.1 +0.1 %

100 50 ppm/°C

40 100

18 50 ppm/°C

35 15 ppm/°C

200 200 mV

0.25 0.25 mV/mA

0.45 0.45 mV/mA

0.40 0.40 mV/mA

0.6 0.6 mV/mA

2.9 2.9 mV/mA

3.7 3.7 mV/mA

25 25 µV/V

80 80 dB

70 70 µA

15 15 mA

85 85 µV p-p

60 60 µV rms

120 120 µs

100 100 ppm/1000 hr

115 115 ppm

−40 +125 −40 +125 °C

−55 +125 −55 +125 °C

Rev. J | Page 4 of 16

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Data Sheet

ABSOLUTE MAXIMUM RATINGS

Table 6.

Parameter

VIN to Ground

Internal Power Dissipation1

SOT-23-3 (RT-3)

Storage Temperature Range

Specified Temperature Range

AD1582RT/AD1583RT/

AD1584RT/AD1585RT

Lead Temperature, Soldering

Vapor Phase (60 sec)

Infrared (15 sec)

Rating

12 V

400 mW

−65°C to 150°C

−40°C to +125°C

215°C

220°C

1 Specification is for device in free air at 25°C; SOT-23 package, θJA = 300°C.

AD1582/AD1583/AD1584/AD1585

Stresses above those listed under Absolute Maximum Ratings

may cause permanent damage to the device. This is a stress

rating only; 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.

ESD CAUTION

Rev. J | Page 7 of 16

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