LM285-1.2-N Series

1.235-V, –40°C to +85°C, micropower voltage reference diode

Catalog

1.235-V, –40°C to +85°C, micropower voltage reference diode

Part	Voltage - Output (Min/Fixed)	Current - Output	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Package / Case [y]	Package / Case [x]	Mounting Type	Noise - 10Hz to 10kHz	Supplier Device Package	Temperature Coefficient	Reference Type	Output Type	Tolerance	Current - Cathode [custom]	Voltage - Output (Max) [Max]	Current - Cathode	Output Type	Current - Cathode [custom]
Texas Instruments LM285BXM-1.2/NOPB	1.235 V	20 mA	85 °C	-40 °C	8-SOIC	3.9 mm	0.154 in	Surface Mount	60 µVrms	8-SOIC	30 ppm/°C	Shunt	1.81 mOhm	1 %	10 çA
Texas Instruments LM285H-1.2	1.235 V	20 mA	85 °C	-40 °C	TO-46-2 Metal Can			Through Hole	60 µVrms	TO-2	150 ppm/°C	Shunt	1.81 mOhm	1 %	10 çA
Texas Instruments LM285M-1.2/NOPB	1.235 V	20 mA	85 °C	-40 °C	8-SOIC	3.9 mm	0.154 in	Surface Mount	60 µVrms	8-SOIC	150 ppm/°C	Shunt	1.81 mOhm	1 %	10 çA
Texas Instruments LM285LP-2-5	2.5 V	20 mA	85 °C	-40 °C	TO-226-3 TO-92-3			Through Hole	120 ÁVrms	TO-92-3	20 ppm/°C	Shunt	1.81 mOhm	1.5 %	20 ÁA
Texas Instruments LM285BYMX-1.2/NOPB	1.235 V	20 mA	85 °C	-40 °C	8-SOIC	3.9 mm	0.154 in	Surface Mount	60 µVrms	8-SOIC	50 ppm/°C	Shunt	1.81 mOhm	1 %	10 çA
Texas Instruments LM285M/NOPB	1.24 V	20 mA	85 °C	-40 °C	8-SOIC	3.9 mm	0.154 in	Surface Mount	50 µVrms	8-SOIC	150 ppm/°C	Shunt		2 %		5.3 V	45 µA	Adjustable
Texas Instruments LM285LP-1-2	1.235 V	20 mA	85 °C	-40 °C	TO-226-3 TO-92-3			Through Hole	60 µVrms	TO-92-3	20 ppm/°C	Shunt	1.81 mOhm	1 %	10 çA
Texas Instruments LM285BXZ-1.2/LFT4	1.235 V	20 mA	85 C	-40 °C	TO-226-3 TO-92-3			Through Hole	60 µVrms	TO-92-3	30 ppm/°C	Shunt	1.81 mOhm	1 %					10 ÁA
Texas Instruments LM285LPE3-1-2	1.235 V	20 mA	85 °C	-40 °C	TO-226-3 TO-92-3			Through Hole	60 µVrms	TO-92-3	20 ppm/°C	Shunt	1.81 mOhm	1 %	10 çA
Texas Instruments LM285M-2.5/NOPB	2.5 V	20 mA	85 °C	-40 °C	8-SOIC	3.9 mm	0.154 in	Surface Mount	120 ÁVrms	8-SOIC	150 ppm/°C	Shunt	1.81 mOhm	1.5 %	20 ÁA

Catalog

1.235-V, –40°C to +85°C, micropower voltage reference diode

Key Features

• Operating Current RangeLM285-1.2: 10 μA to 20 mALM385-1.2: 15 μA to 20 mALM385B-1.2: 15 μA to 20 mA1% and 2% Initial Voltage ToleranceReference ImpedanceLM385-1.2: 1 Ω MAX at 25°CAll devices: 1.5 Ω MAX over FullTemperature RangeVery Low Power ConsumptionInterchangeable with Industry StandardLM285-1.2 and LM385-1.2Operating Current RangeLM285-1.2: 10 μA to 20 mALM385-1.2: 15 μA to 20 mALM385B-1.2: 15 μA to 20 mA1% and 2% Initial Voltage ToleranceReference ImpedanceLM385-1.2: 1 Ω MAX at 25°CAll devices: 1.5 Ω MAX over FullTemperature RangeVery Low Power ConsumptionInterchangeable with Industry StandardLM285-1.2 and LM385-1.2

Description

The LM185-1.2-N/LM285-1.2-N/LM385-1.2-N are micropower 2-terminal band-gap voltage regulator diodes. Operating over a 10μA to 20mA current range, they feature exceptionally low dynamic impedance and good temperature stability. On-chip trimming is used to provide tight voltage tolerance. Since the LM185-1.2-N band-gap reference uses only transistors and resistors, low noise and good long term stability result. Careful design of the LM185-1.2-N has made the device exceptionally tolerant of capacitive loading, making it easy to use in almost any reference application. The wide dynamic operating range allows its use with widely varying supplies with excellent regulation. The extremely low power drain of the LM185-1.2-N makes it useful for micropower circuitry. This voltage reference can be used to make portable meters, regulators or general purpose analog circuitry with battery life approaching shelf life. Further, the wide operating current allows it to replace older references with a tighter tolerance part. The LM185-1.2-N is rated for operation over a −55°C to 125°C temperature range while the LM285-1.2-N is rated −40°C to 85°C and the LM385-1.2-N 0°C to 70°C. The LM185-1.2-N/LM285-1.2-N are available in a hermetic TO package and the LM285-1.2-N/LM385-1.2-N are also available in a low-cost TO-92 molded package, as well as SOIC and SOT-23. The LM185-1.2-N/LM285-1.2-N/LM385-1.2-N are micropower 2-terminal band-gap voltage regulator diodes. Operating over a 10μA to 20mA current range, they feature exceptionally low dynamic impedance and good temperature stability. On-chip trimming is used to provide tight voltage tolerance. Since the LM185-1.2-N band-gap reference uses only transistors and resistors, low noise and good long term stability result. Careful design of the LM185-1.2-N has made the device exceptionally tolerant of capacitive loading, making it easy to use in almost any reference application. The wide dynamic operating range allows its use with widely varying supplies with excellent regulation. The extremely low power drain of the LM185-1.2-N makes it useful for micropower circuitry. This voltage reference can be used to make portable meters, regulators or general purpose analog circuitry with battery life approaching shelf life. Further, the wide operating current allows it to replace older references with a tighter tolerance part. The LM185-1.2-N is rated for operation over a −55°C to 125°C temperature range while the LM285-1.2-N is rated −40°C to 85°C and the LM385-1.2-N 0°C to 70°C. The LM185-1.2-N/LM285-1.2-N are available in a hermetic TO package and the LM285-1.2-N/LM385-1.2-N are also available in a low-cost TO-92 molded package, as well as SOIC and SOT-23.