LT1027_15 Datasheet, PDF (1/8 Pages) Linear Technology – Precision 5V Reference

LT1027
Precision
5V Reference
FEATURES
s _{Very Low Drift: 2ppm/°C Max TC}
s _{Pin Compatible with LT1021-5, REF-02,}
(PDIP Package)
s _{Output Sources 15mA, Sinks 10mA}
s _{Excellent Transient Response Suitable for}
A-to-D Reference Inputs
s _{Noise Reduction Pin}
s _{Excellent Long Term Stability}
s _{Less Than 1ppm P-P Noise (0.1Hz to 10Hz)}
U
APPLICATIO S
s _{A-to-D and D-to-A Converters}
s _{Digital Voltmeters}
s _{Reference Standard}
s _{Precision Current Source}
DESCRIPTIO
The LT^®1027 is a precision reference with extra-low drift,
superior accuracy, excellent line and load regulation and
low output impedance at high frequency. This device is
intended for use in 12- to 16-bit A-to-D and D-to-A
systems where demanding accuracy requirements must
be met without the use of power hungry, heated substrate
references. The fast settling output recovers quickly from
load transients such as those presented by A-to-D converter
reference inputs. The LT1027 brings together both
outstanding accuracy and temperature coefficient
specifications.
The LT1027 reference is based on LTC’s proprietary
advanced subsurface Zener bipolar process which
eliminates noise and stability problems associated with
surface breakdown devices.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
Supplying V_REF and V_CC to the LTC^®1290 12-bit ADC
+
2.2µF
8V TO 40V
V_IN
V_OUT
LT1027
V_TRIM
GND
ANALOG
INPUTS
+
10k
22µF
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
V_{CC SCLK}
A_CLK
D_OUT
D_IN
CS
LTC1290
REF⁺
REF ^–
AGND V^– DGND
TO µC
1027 TA01
Output Voltage
5.006
5.004
5.002
5.000
4.998
4.996
4.994
–50 –25 0
25 50 75 100
TEMPERATURE (°C)
1027 TA02
sn1027 1027fcs
1