REF03 IC – 2.5V Precision Voltage Reference IC
The REF03 precision voltage reference provides a stable 2.5 V output, with minimal change for variations in supply voltage, ambient temperature, or loading conditions. Single-supply operation over an input voltage range of 4.5 V to 33 V with a current drain of 1 mA and good temperature stability is achieved using an improved band gap design. Primarily targeted at price sensitive applications, the REF03 is available in plastic mini DIPs and surface-mount small outline plastic packages. For improved performance or ?40?C to 125?C operation, see the ADR03 data sheet.
REF03GS
The REF01/REF02/REF03 series of precision voltage references
provide a stable 10.0 V, 5.0 V, or 2.5 V output with minimal change
in response to variations in supply voltage, ambient temperature
or load conditions. The devices are available in 8-lead SOIC, PDIP,
CERDIP, and TO-99 packages, as well as 20-terminal LCC
packages (883 only), furthering the usability of the devices in
both standard and high stress applications.
With an external buffer and a simple resistor network, the
TEMP terminal can be used for temperature sensing and
approximation. A TRIM terminal is also provided on the
device for fine adjustment of the output voltage.
The small footprint, wide supply range, and application
versatility make the REF01/REF02/REF03 series of references
ideal for general-purpose and space-constrained applications.
Newer designs should use the ADR01/ADR02/ADR03/ADR06
series of references, which offer higher accuracy and temperature
REF191GS
The REF19x series precision band gap voltage references use a
patented temperature drift curvature correction circuit and
laser trimming of highly stable, thin-film resistors to achieve a
very low temperature coefficient and high initial accuracy.
The REF19x series is made up of micropower, low dropout
voltage (LDV) devices, providing stable output voltage from
supplies as low as 100 mV above the output voltage and
consuming less than 45 ?A of supply current. In sleep mode,
which is enabled by applying a low TTL or CMOS level to the
SLEEP pin, the output is turned off and supply current is
further reduced to less than 15 ?A.
The REF19x series references are specified over the extended
industrial temperature range (?40?C to 85?C) with typical
performance specifications over ?40?C to 125?C for
applications, such as automotive.
All electrical grades are available in an 8-lead SOIC package; the
PDIP and TSSOP packages are available only in the lowest
electrical grade.
REF195
ROX-2522-S3
Features of ROX-2522-S3
- Holdover of under 15 seconds over a 24-hour period with a 50?C up-and-down temperature gradient of 10?C per hour (typical)
- Standard MHz ranges include 10, 12.8, 20, and 40.
- I Square C Temperature Sensor Output in Small Form Factor (optional)
- G.8263, G.8273.x in IEEE 1588
- Modules for stratum 3E timing
- Stability in stratum 2
- Reference to time and frequency
- Cellular base stations
- 5G Base Stations for LTE-TDD
- Nominal frequency? - 10MHz? to 40MHz
- Operating temperature range? is -40?C? to +85?C
- Frequency stability over temperature - 1ppb
- Supply voltage- 3.3V
- Harmonics are -35dBc
- Start?up time - 1.5 sec
