AD1580BRT-R2 Datasheet, PDF (1/12 Pages) Analog Devices – 1.2 V Micropower, Precision Shunt Voltage Reference

FEATURES
Wide operating range: 50 µA to 10 mA
Initial accuracy: ±0.1% maximum
Temperature drift: ±50 ppm/°C maximum
Output impedance: 0.5 Ω maximum
Wideband noise (10 Hz to 10 kHz): 20 µV rms
Operating temperature range: −40°C to +85°C
High ESD rating
4 kV human body model
400 V machine model
Compact, surface-mount SOT-23 and SC70 packages
APPLICATIONS
Portable, battery-powered equipment
Cellular phones, notebook computers, PDAs, GPSs,
and DMMs
Computer workstations
Suitable for use with a wide range of video RAMDACs
Smart industrial transmitters
PCMCIA cards
Automotive
3 V/5 V, 8-bit to 12-bit data converters
GENERAL DESCRIPTION
The AD1580¹ is a low cost, 2-terminal (shunt), precision band
gap reference. It provides an accurate 1.225 V output for input
currents between 50 μA and 10 mA.
The superior accuracy and stability of the AD1580 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 nonli-
nearities 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 the SOT-23 and SC70 packages, the smallest
surface-mount packages available. Both grades are specified
over the industrial temperature range of −40°C to +85°C.
1.2 V Micropower, Precision
Shunt Voltage Reference
AD1580
PIN CONFIGURATIONS
AD1580
V+ 1
3 NC (OR V–)
V– 2
TOP VIEW
NC = NO CONNECT
Figure 1. SOT-23
AD1580
V– 1
3 NC (OR V–)
V+ 2
TOP VIEW
NC = NO CONNECT
Figure 2. SC70
50
45
40
35
30
25
20
15
10
5
0
–40 –30 –20 –10
0
10
20
30
40
TEMPERATURE DRIFT (ppm/°C)
Figure 3. Reverse Voltage Temperature Drift Distribution
300
250
200
150
100
50
0
–10 –8 –6 –4 –2 0 2 4 6 8 10
OUTPUT ERROR (mV)
Figure 4. Reverse Voltage Error Distribution
1 _{Protected by U.S. Patent No. 5,969,657.}
Rev. F
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