SR12D Datasheet, PDF (2/5 Pages) Zarlink Semiconductor Inc – 1.2V PRECISION VOLTAGE REFERENCE

SR12D
1.2V PRECISION VOLTAGE REFERENCE
DS2442 - 2.2
The SR12D is a monolithic integrated circuit using the
bandgap principle to provide a precise reference voltage of
1.23V.
This reference device is packaged in a standard SOT-23
small outline package, making it ideal for all surface mount
applications.
FEATURES
s Standard SOT-23 Surface Mount Package
s Low Knee Current - Typically 80 µA
s Low temperature Coefficient
Fig. 1 Pin connections (top view)
SOT-23
ABSOLUTE MAXIMUM RATINGS
Reference current
Operating temperature range
Storage temperature range
2.5mA
-40°C to + 85°C
-55°C to +125°C
Fig.2 SR12D circuit diagram
Fig.3 SR12D external connections.
NOTE: In order to achieve optimum operation, an electrolytic
stabilising capacitor (C_S > 1µF) should be connected between
V_REF and 0V as shown in Fig. 3.
ELECTRICAL CHARACTERISTICS
These characteristics are guaranteed over the following conditions (unless otherwise stated):
Tamb = +25°C, IREF = 150µA, CS = 1µF
Characteristic
Value
Symbol
Min. Typ. Max.
Units
Output voltage
Slope resistance (see note 1)
Turn-on (knee) current
Recommended operating current range
Temperature coefficient (see note 2)
V_REF
R
REF
I_ON
I
REF
TCV_REF
RMS noise voltage
E_N
Turn on time
t
ON
Turn off time
t_OFF
Turn on time
t
ON
Turn off time
t_OFF
1.193
0.09
1.230 1.267
1.5 2.5
80 90
2.5
40 125
40 120
10
7
24
0.4
1.8
V
Ω
µA
mA
ppm/°C
ppm/°C
µV
ms
ms
ms
ms
Conditions
I_REF = 150µA to 2.5mA
0°C to +70°C
-40°C to + 85°C
1Hz to 25kHz
I = 5mA
REF