Analog Devices AD1585, AD1584, AD1583, AD1582 Datasheet

2.5 V to 5.0 V Micropower, Precision

a

AD1582/AD1583/AD1584/AD1585

FEATURES
Series Reference (2.5 V, 3 V, 4.096 V, 5 V)
Initial Accuracy: ⴞ0.1% max
Temperature Drift: ⴞ50 ppm/ⴗC max
Low Quiescent Current: 65 ␮A max
Current Output Capability: ⴞ5 mA
Wide Supply Range: V

IN

= V
Wideband Noise (10 Hz–10 kHz): 50 ␮V rms
Operating Temperature Range: –40ⴗC to +85ⴗC
Compact, Surface-Mount, SOT-23 Package

GENERAL DESCRIPTION

The AD1582, AD1583, AD1584 and AD1585 are a family of
low cost, low power, low dropout, precision bandgap references.
These designs are available as three-terminal (series) devices and
are packaged in the compact SOT-23, 3-pin, surface mount
package. The versatility of these references makes them ideal for
use in battery powered 3 V or 5 V systems where there may 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 is made possible by the precise
matching and thermal tracking of on-chip components. Patented
temperature drift curvature correction design techniques have
been used to minimize the nonlinearities in the voltage output
temperature characteristic.

These series mode devices (AD1582/AD1583/AD1584/AD1585)
will source or sink up to 5 mA of load current and operate
efficiently with only 200 mV of required headroom. This family
will draw a maximum 65 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 and AD1585 are available in
two grades, A and B, both of which are provided in the smallest
available package on the market, the SOT-23. Both grades are
specified over the industrial temperature range of –40°C to
+85°C.

+ 200 mV to 12 V

OUT

Series Mode Voltage References

FUNCTIONAL BLOCK DIAGRAM

1

V

OUT

3

V

IN

2

GND

AD1582/3/4/5

TOP VIEW

TARGET APPLICATIONS

1. Portable, Battery Powered Equipment. Notebook Comput­ers, Cellular Phones, Pagers, PDAs, GPSs and DMMs.

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

3. Smart Industrial Transmitters.

4. PCMCIA Cards.

5. Automotive.

6. Hard Disk Drives.

7. 3 V/5 V 8-Bit–12-Bit Data Converters.

900

800

700

600

500

– ␮A

400

SUPPLY

I

300

200

100

0

2.7 5

Figure 1. Supply Current (µA) vs. Supply Voltage (V)

SHUNT REFERENCE*

AD1582 SERIES REFERENCE

V

– V

SUPPLY

*3.076k⍀ SOURCE RESISTOR

REV. A

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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.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] World Wide Web Site: http://www.analog.com
Fax: [phone] © Analog Devices, Inc., 2000

AD1582/AD1583/AD1584/AD1585

AD1582–SPECIFICATIONS

(@ TA = T

, VIN = 5 V, unless otherwise noted)

MIN–TMAX

Model AD1582A AD1582B

Min Typ Max Min Typ Max Units

OUTPUT VOLTAGE (@ +25°C) 2.48 2.50 2.52 2.498 2.500 2.502 V

OUT

1

100 50 ppm/°C

)

OUTPUT VOLTAGE TEMPERATURE DRIFT

MINIMUM SUPPLY HEADROOM (VIN–V

With I

= 1 mA 200 200 mV

OUT

LOAD REGULATION

0 mA < I
–5 mA < I

< 5 mA 200 200 µV/mA

OUT

< 0 mA 250 250 µV/mA

OUT

LOAD REGULATION

–100 µA < I

< 100 µA 2 2 mV/mA

OUT

LINE REGULATION

+200 mV < VIN < 12 V

V

OUT

I

= 0 mA 25 25 µV/V

OUT

RIPPLE REJECTION (∆V

VIN = 5 V ± 100 mV (f = 120 Hz)

OUT

/∆VIN)

2

80 80 dB

QUIESCENT CURRENT 65 65 µA

SHORT CIRCUIT CURRENT TO GROUND 15 15 mA

NOISE VOLTAGE (@ +25°C)

0.1 Hz to 10 Hz 70 70 µV p-p
10 Hz to 10 kHz 50 50 µV rms

TURN-ON SETTLING TIME TO 0.1%

LONG-TERM STABILITY

1000 Hours @ +25°C

4

OUTPUT VOLTAGE HYSTERESIS

3

100 100 µs

100 100 ppm/1000 hrs.

5

115 115 ppm

TEMPERATURE RANGE

Specified Performance (A, B) –40 +85 –40 +85 °C
Operating Performance (A, B)

NOTES

1

Maximum output voltage drift is guaranteed for all grades.

2

Ripple Rejection over a wide frequency spectrum is shown in Figure 15.

3

Measured with a capacitance load of 0.2 µF.

4

Long-term stability at +125°C = 1600 ppm/1000 hours.

5

Hysteresis is defined as the change in the 25°C output voltage, caused by bringing the device to +85 °C, taking a 25°C measurement and then bringing it to –40°C, followed
by another 25°C measurement. Refer to Figure 12.

6

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

Specifications subject to change without notice.

6

–55 +125 –55 +125 °C

–2–

REV. A

AD1582/AD1583/AD1584/AD1585

AD1583–SPECIFICATIONS

(@ TA = T

, VIN = 5 V, unless otherwise noted)

MIN–TMAX

Model AD1583A AD1583B

Min Typ Max Min Typ Max Units

OUTPUT VOLTAGE (@ +25°C) 2.97 3.00 3.03 2.997 3.000 3.003 V

OUTPUT VOLTAGE TEMPERATURE DRIFT

MINIMUM SUPPLY HEADROOM (V

With I

= 1 mA 200 200 mV

OUT

IN–VOUT

1

100 50 ppm/°C

)

LOAD REGULATION

0 mA < I
–5 mA < I

< 5 mA 250 250 µV/mA

OUT

< 0 mA 400 400 µV/mA

OUT

LOAD REGULATION

–100 µA < I

< 100 µA 2.4 2.4 mV/mA

OUT

LINE REGULATION

+200 mV < VIN < 12 V

V

OUT

I

= 0 mA 25 25 µV/V

OUT

RIPPLE REJECTION (∆V

VIN = 5 V ± 100 mV (f = 120 Hz)

OUT

/∆VIN)

2

80 80 dB

QUIESCENT CURRENT 65 65 µA

SHORT CIRCUIT CURRENT TO GROUND 15 15 mA

NOISE VOLTAGE (@ +25°C)

0.1 Hz to 10 Hz 85 85 µV p-p
10 Hz to 10 kHz 60 60 µV rms

TURN-ON SETTLING TIME TO 0.1%

3

120 120 µs

LONG-TERM STABILITY

1000 Hours @ +25°C 100 100 ppm/1000 hrs.

OUTPUT VOLTAGE HYSTERESIS

4

115 115 ppm

TEMPERATURE RANGE

Specified Performance (A, B) –40 +85 –40 +85 °C
Operating Performance (A, B)

NOTES

1

Maximum output voltage drift is guaranteed for all grades.

2

Ripple Rejection over a wide frequency spectrum is shown in Figure 15.

3

Measured with a capacitance load of 0.2 µF.

4

Hysteresis is defined as the change in the 25°C output voltage, caused by bringing the device to +85 °C, taking a 25°C measurement and then bringing it to –40°C, followed
by another 25°C measurement. Refer to Figure 12.

5

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

Specifications subject to change without notice.

5

–55 +125 –55 +125 °C

REV. A

–3–

AD1582/AD1583/AD1584/AD1585

AD1584–SPECIFICATIONS

(@ TA = T

, VIN = 5 V, unless otherwise noted)

MIN–TMAX

Model AD1584A AD1584B

Min Typ Max Min Typ Max Units

OUTPUT VOLTAGE (@ +25°C) 4.056 4.096 4.136 4.092 4.096 4.100 V

OUTPUT VOLTAGE TEMPERATURE DRIFT

MINIMUM SUPPLY HEADROOM (V

With I

= 1 mA 200 200 mV

OUT

IN–VOUT

1

100 50 ppm/°C

)

LOAD REGULATION

0 mA < I
–5 mA < I

< 5 mA 320 320 µV/mA

OUT

< 0 mA 320 320 µV/mA

OUT

LOAD REGULATION

–100 µA < I

< 100 µA 3.2 3.2 mV/mA

OUT

LINE REGULATION

+200 mV < VIN < 12 V

V

OUT

I

= 0 mA 25 25 µV/V

OUT

RIPPLE REJECTION (∆V

VIN = 5 V ± 100 mV (f = 120 Hz)

OUT

/∆VIN)

2

80 80 dB

QUIESCENT CURRENT 65 65 µA

SHORT CIRCUIT CURRENT TO GROUND 15 15 mA

NOISE VOLTAGE (@ +25°C)

0.1 Hz to 10 Hz 110 110 µV p-p
10 Hz to 10 kHz 90 90 µV rms

TURN-ON SETTLING TIME TO 0.1%

3

140 140 µs

LONG-TERM STABILITY

1000 Hours @ +25°C 100 100 ppm/1000 hrs.

OUTPUT VOLTAGE HYSTERESIS

4

115 115 ppm

TEMPERATURE RANGE

Specified Performance (A, B) –40 +85 –40 +85 °C
Operating Performance (A, B)

NOTES

1

Maximum output voltage drift is guaranteed for all grades.

2

Ripple Rejection over a wide frequency spectrum is shown in Figure 15.

3

Measured with a capacitance load of 0.2 µF.

4

Hysteresis is defined as the change in the 25°C output voltage, caused by bringing the device to +85 °C, taking a 25°C measurement and then bringing it to –40°C, followed
by another 25°C measurement. Refer to Figure 12.

5

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

Specifications subject to change without notice.

5

–55 +125 –55 +125 °C

–4–

REV. A