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REF3030 Schematic ( PDF Datasheet ) - ON Semiconductor

Teilenummer REF3030
Beschreibung CMOS Voltage Reference
Hersteller ON Semiconductor
Logo ON Semiconductor Logo 




Gesamt 8 Seiten
REF3030 Datasheet, Funktion
REF3012, REF3020,
REF3025, REF3030,
REF3033, REF3040
High Precision, Low Drift,
CMOS Voltage Reference
The REF30xx family of voltage references provides accurate
voltage regulation with a maximum temperature drift of 50 ppm/°C.
The REF30xx can source or sink up to 10 mA of load current. It is
supplied in a spacesaving SOT23 package, and for most
applications can forgo the use of an output bypass capacitor.
Features
Reference Voltages:
1.25 V, 2.048 V, 2.5 V, 3.0 V, 3.3 V, 4.096 V
High Accuracy: ±0.2%
Low Quiescent Current: 30 mA max
High Output Current: 10 mA Sourced or Sunk
Maximum 50 ppm/°C Temperature Drift over the Specified Range of
40°C to +85°C
SOT23 3Lead Package
This Device is PbFree, Halogen Free/BFR Free, and RoHS
Compliant
Typical Applications
Battery Powered Systems
A/D and D/A Converters
Precision Regulator Systems
Power Supplies
Portable Medical Equipment
VIN
C
0.1 mF
VIN VOUT
REF30xx
GND
VOUT
Figure 1. Application Circuit
http://onsemi.com
SOT233
TB SUFFIX
CASE 527AG
MARKING DIAGRAM
3
S3YM
12
S3 = Specific Device Code
Y = Production Year
= (Last Digit)
M = Production Month
= (1 9, O, N, D)
PIN CONNECTIONS
1
VIN
3
GND
VOUT
2
(Top View)
Pin No.
1
2
3
PIN FUNCTIONS
Pin Name
Function
VIN
VOUT
GND
Supply Voltage Input
Output Voltage
Ground
© Semiconductor Components Industries, LLC, 2011
April, 2011 Rev. 0
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
1 Publication Order Number:
REF3012/D






REF3030 Datasheet, Funktion
REF3012, REF3020, REF3025, REF3030, REF3033, REF3040
APPLICATION INFORMATION
Application Information
A supply bypass capacitor of 0.1 mF is recommended.
In most applications, the REF30xx does not require an
output bypass capacitor. For the effects of a capacitive load
on device performance, see Figures 8 and 9 in the Typical
Characteristics section.
Power Supply
The REF30xx family of references works at supply
voltages between 2.7 V and 5.5 V. The maximum dropout
voltage in this range is 2.5 mV.
While the power supply voltage rises to the specified level
during powerup, the REF30xx will temporarily draw a
higher than typical current. It is recommended to use a
power supply with a fast rising edge.
Line Regulation
Line regulation is defined as the change in output voltage
due to the change in the input voltage. For REF30xx, this
change is less than 100 mV/V across the specified supply
voltage range.
Thermal Hysteresis
Thermal hysteresis is defined as the change in the output
voltage after the device is cycled through the operating
temperature range. This change is reported as a fraction of
the nominal output voltage, in ppm. The initial output VPRE
is measured at 25°C. After the device is cooled to 40°C,
heated to +80°C, then cooled back to 25°C, the final output
voltage VPOST is measured. The thermal hysteresis is equal
to
ThHYST
+
ŤVPRE * VPOSTŤ
VNOM
@
106(ppm)
(eq. 1)
where VNOM is the nominal output voltage.
Temperature Drift
Temperature drift is defined as the change in the output
voltage caused by a change in operating temperature. (See
Figure 2 in the Typical Characteristics section.) The
REF30xx family is designed to exhibit a temperature drift of
less than 50 ppm/°C across its entire operating temperature
range of 40°C to +85°C.
Noise Performance
The noise generated by the REF30xx family is typically
less than 50 mVpp between frequencies of 0.1 Hz to 10 Hz,
as shown in the Typical Characteristic Curves. Output noise
can be additionally reduced using a lowpass filter, although
care should be taken, as capacitive loads affect the PSRR and
the output impedance. (See the Typical Characteristics
section.)
Load Regulation
Load regulation is defined as the change in output voltage
due to a specified change in load current. The REF30xx
family can sink or source up to 10 mA of current, with an
output change of less than 250 mV/mA when sourcing, or
350 mV/mA when sinking current.
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