PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
www.ti.com
SLOS487 – JUNE 2007
FEATURES
•
•
1.225-V Fixed and Adjustable (1.225-V to 10-V)
Outputs
Tight Output Tolerances and Low
Temperature Coefficient
– Max 0.1%, 50 ppm/°C – A Grade
– Max 0.2%, 50 ppm/°C – B Grade
– Max 0.5%, 50 ppm/°C – C Grade
Low Output Noise…20
µV
RMS
(Typ)
Wide Operating Current Range…
60
µA
(Typ) to 12 mA
Stable With All Capacitive Loads; No Output
Capacitor Required
Available in
– Industrial Temperature: –40°C to 85°C
– Extended Temperature: –40°C to 125°C
1.2 V...DBZ (SOT-23-3) PACKAGE
(TOP VIEW)
APPLICATIONS
•
•
•
•
•
•
•
•
Data-Acquisition Systems
Power Supplies and Power-Supply Monitors
Instrumentation and Test Equipment
Process Control
Precision Audio
Automotive Electronics
Energy Management/Metering
Battery-Powered Equipment
•
•
•
•
1.2 V...DCK (SC-70) PACKAGE
(TOP VIEW)
CATHODE
1
3 *
ANODE
1
5
NC
ANODE
2
* Pin 3 is attached to Substrate and must
be connected to ANODE or left open.
*
2
CATHODE
3
4
NC
NC – No internal connection
* Pin 2 is attached to Substrate and must
be connected to ANODE or left open.
Adjustable...DCK (SC-70) PACKAGE
(TOP VIEW)
Adjustable...DBZ (SOT-23-3) PACKAGE
(TOP VIEW)
FB
CATHODE
1
3
2
NC
1
ANODE
ANODE
CATHODE
2
3
5
FB
4
NC
NC – No internal connection
DESCRIPTION/ORDERING INFORMATION
The TL4051 series of shunt voltage references are versatile easy-to-use references suitable for a wide array of
applications. The device is available in a fixed 1.225-V output or an adjustable output whose voltage is
determined by an external resistor divider. The device requires no external capacitors for operation and is stable
with all capacitive loads. Additionally, the reference offers low dynamic impedance, low noise, and low
temperature coefficient to ensure a stable output voltage over a wide range of operating currents and
temperatures.
The TL4051 is offered in three initial tolerances, ranging from 0.1% (max) for the A grade to 0.5% (max) for the
C grade. Thus, a great deal of flexibility is offered to designers in choosing the best cost-to-performance ratio for
their applications. Packaged in the space-saving SOT-23-3 and SC-70 packages and requiring a minimum
current of 45
µA
(typ), the TL4051 also is ideal for portable applications.
The TL4051xI is characterized for operation over an ambient temperature range of –40°C to 85°C. The
TL4051xQ is characterized for operation over an ambient temperature range of –40°C to 125°C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007, Texas Instruments Incorporated
TI [ TEXAS INSTRUMENTS ]
