LM285 Series

Micropower Voltage Reference

Catalog(35 parts)

Part	Current - Cathode▲▼	Noise - 10Hz to 10kHz▲▼	Package / Case	Package / Case	Reference Type	Supplier Device Package	Output Type	Mounting Type	Voltage - Output (Min/Fixed)▲▼	Operating Temperature▲▼	Operating Temperature▲▼	Temperature Coefficient▲▼	Voltage - Output (Max)▲▼	Tolerance▲▼	Tolerance▲▼	Current - Output▲▼	Package / Case▲▼	Output Type▲▼	Current - Cathode▲▼
Texas Instruments LM285BXZ/NOPB Shunt Voltage Reference IC Adjustable 1.24V 5.3 VV ±1% 20 mA TO-92-3	0.000045000000682193786 A	50 ul	TO-226-3, TO-226AA	TO-92-3	Shunt	TO-92-3	Adjustable	Through Hole	1.2400000095367432 V	85 °C	-40 °C	0.000029999999242136255 ul	5.300000190734863 V	0.009999999776482582 ul	-0.009999999776482582 ul	0.019999999552965164 A
Texas Instruments LM285BXM-1.2/NOPB Shunt Voltage Reference IC Fixed 1.235V V ±1% 20 mA 8-SOIC	0.000009999999747378752 A	60 ul		8-SOIC	Shunt	8-SOIC		Surface Mount	1.2350000143051147 V	85 °C	-40 °C	0.000029999999242136255 ul		0.009999999776482582 ul	-0.009999999776482582 ul	0.019999999552965164 A	0.003899999894201755 m	27.030000686645508 °C/W
Texas Instruments LM285H-1.2 Shunt Voltage Reference IC Fixed 1.235V V ±1% 20 mA TO-2	0.000009999999747378752 A	60 ul		TO-46-2 Metal Can	Shunt	TO-2		Through Hole	1.2350000143051147 V	85 °C	-40 °C	0.0001500000071246177 ul		0.009999999776482582 ul	-0.009999999776482582 ul	0.019999999552965164 A		27.030000686645508 °C/W
Texas Instruments LM285M-1.2/NOPB Shunt Voltage Reference IC Fixed 1.235V V ±1% 20 mA 8-SOIC	0.000009999999747378752 A	60 ul		8-SOIC	Shunt	8-SOIC		Surface Mount	1.2350000143051147 V	85 °C	-40 °C	0.0001500000071246177 ul		0.009999999776482582 ul	-0.009999999776482582 ul	0.019999999552965164 A	0.003899999894201755 m	27.030000686645508 °C/W
Texas Instruments LM285LPE3-2-5 Shunt Voltage Reference IC Fixed 2.5V V ±1.5% 20 mA TO-92-3	0.000019999999494757503 A	120 ul	TO-226-3, TO-226AA	TO-92-3	Shunt	TO-92-3		Through Hole	2.5 V	85 °C	-40 °C	0.000019999999494757503 ul		0.014999999664723871 ul	-0.014999999664723871 ul	0.019999999552965164 A		27.030000686645508 °C/W
Texas Instruments LM285LP-2-5 Shunt Voltage Reference IC Fixed 2.5V V ±1.5% 20 mA TO-92-3	0.000019999999494757503 A	120 ul	TO-226-3, TO-226AA	TO-92-3	Shunt	TO-92-3		Through Hole	2.5 V	85 °C	-40 °C	0.000019999999494757503 ul		0.014999999664723871 ul	-0.014999999664723871 ul	0.019999999552965164 A		27.030000686645508 °C/W
Texas Instruments LM285BYMX-1.2/NOPB Shunt Voltage Reference IC Fixed 1.235V V ±1% 20 mA 8-SOIC	0.000009999999747378752 A	60 ul		8-SOIC	Shunt	8-SOIC		Surface Mount	1.2350000143051147 V	85 °C	-40 °C	0.00004999999873689376 ul		0.009999999776482582 ul	-0.009999999776482582 ul	0.019999999552965164 A	0.003899999894201755 m	27.030000686645508 °C/W
Texas Instruments LM285DRG4-2-5 Shunt Voltage Reference IC Fixed 2.5V V ±1.5% 20 mA 8-SOIC	0.000019999999494757503 A	120 ul		8-SOIC	Shunt	8-SOIC		Surface Mount	2.5 V	85 °C	-40 °C	0.000019999999494757503 ul		0.014999999664723871 ul	-0.014999999664723871 ul	0.019999999552965164 A	0.003899999894201755 m	27.030000686645508 °C/W
Texas Instruments LM285M/NOPB Shunt Voltage Reference IC Adjustable 1.24V 5.3 VV ±2% 20 mA 8-SOIC	0.000045000000682193786 A	50 ul		8-SOIC	Shunt	8-SOIC	Adjustable	Surface Mount	1.2400000095367432 V	85 °C	-40 °C	0.0001500000071246177 ul	5.300000190734863 V	0.019999999552965164 ul	-0.019999999552965164 ul	0.019999999552965164 A	0.003899999894201755 m
Texas Instruments LM285LP-1-2 Shunt Voltage Reference IC Fixed 1.235V V ±1% 20 mA TO-92-3	0.000009999999747378752 A	60 ul	TO-226-3, TO-226AA	TO-92-3	Shunt	TO-92-3		Through Hole	1.2350000143051147 V	85 °C	-40 °C	0.000019999999494757503 ul		0.009999999776482582 ul	-0.009999999776482582 ul	0.019999999552965164 A		27.030000686645508 °C/W
Texas Instruments LM285DRE4-1-2 Shunt Voltage Reference IC Fixed 1.235V V ±1% 20 mA 8-SOIC	0.000009999999747378752 A	60 ul		8-SOIC	Shunt	8-SOIC		Surface Mount	1.2350000143051147 V	85 °C	-40 °C	0.000019999999494757503 ul		0.009999999776482582 ul	-0.009999999776482582 ul	0.019999999552965164 A	0.003899999894201755 m	27.030000686645508 °C/W
Texas Instruments LM285BYZ-1.2/NOPB Shunt Voltage Reference IC Fixed 1.235V V ±1% 20 mA TO-92-3	0.000009999999747378752 A	60 ul	TO-226-3, TO-226AA	TO-92-3	Shunt	TO-92-3		Through Hole	1.2350000143051147 V	85 °C	-40 °C	0.00004999999873689376 ul		0.009999999776482582 ul	-0.009999999776482582 ul	0.019999999552965164 A		27.030000686645508 °C/W
Texas Instruments LM285BXZ-1.2/LFT4 Shunt Voltage Reference IC Fixed 1.235V V ▒1% 20 mA TO-92-3		0.00005999999848427251 V	TO-226-3, TO-226AA	TO-92-3	Shunt	TO-92-3		Through Hole	1.2350000143051147 V	85 °C	-40 °C	0.000029999999242136255 ul		0.009999999776482582 ul	-0.009999999776482582 ul	0.019999999552965164 A		27.030000686645508 °C/W	0.000009999999747378752 A
Texas Instruments LM285BXZ-2.5/NOPB Shunt Voltage Reference IC Fixed 2.5V V ±1.5% 20 mA TO-92-3	0.000019999999494757503 A	120 ul	TO-226-3, TO-226AA	TO-92-3	Shunt	TO-92-3		Through Hole	2.5 V	85 °C	-40 °C	0.000029999999242136255 ul		0.014999999664723871 ul	-0.014999999664723871 ul	0.019999999552965164 A		27.030000686645508 °C/W
Texas Instruments LM285MX-1.2 Shunt Voltage Reference IC Fixed 1.235V V ±1% 20 mA 8-SOIC	0.000009999999747378752 A	60 ul		8-SOIC	Shunt	8-SOIC		Surface Mount	1.2350000143051147 V	85 °C	-40 °C	0.0001500000071246177 ul		0.009999999776482582 ul	-0.009999999776482582 ul	0.019999999552965164 A	0.003899999894201755 m	27.030000686645508 °C/W
Texas Instruments LM285LPE3-1-2 Shunt Voltage Reference IC Fixed 1.235V V ±1% 20 mA TO-92-3	0.000009999999747378752 A	60 ul	TO-226-3, TO-226AA	TO-92-3	Shunt	TO-92-3		Through Hole	1.2350000143051147 V	85 °C	-40 °C	0.000019999999494757503 ul		0.009999999776482582 ul	-0.009999999776482582 ul	0.019999999552965164 A		27.030000686645508 °C/W
Texas Instruments LM285M-2.5/NOPB Shunt Voltage Reference IC Fixed 2.5V V ±1.5% 20 mA 8-SOIC	0.000019999999494757503 A	120 ul		8-SOIC	Shunt	8-SOIC		Surface Mount	2.5 V	85 °C	-40 °C	0.0001500000071246177 ul		0.014999999664723871 ul	-0.014999999664723871 ul	0.019999999552965164 A	0.003899999894201755 m	27.030000686645508 °C/W
Texas Instruments LM285BXM-1.2 Shunt Voltage Reference IC Fixed 1.235V V ±1% 20 mA 8-SOIC	0.000009999999747378752 A	60 ul		8-SOIC	Shunt	8-SOIC		Surface Mount	1.2350000143051147 V	85 °C	-40 °C	0.000029999999242136255 ul		0.009999999776482582 ul	-0.009999999776482582 ul	0.019999999552965164 A	0.003899999894201755 m	27.030000686645508 °C/W
Texas Instruments LM285BXZ-1.2/NOPB Shunt Voltage Reference IC Fixed 1.235V V ±1% 20 mA TO-92-3	0.000009999999747378752 A	60 ul	TO-226-3, TO-226AA	TO-92-3	Shunt	TO-92-3		Through Hole	1.2350000143051147 V	85 °C	-40 °C	0.000029999999242136255 ul		0.009999999776482582 ul	-0.009999999776482582 ul	0.019999999552965164 A		27.030000686645508 °C/W
Texas Instruments LM285BXMX-1.2/NOPB Shunt Voltage Reference IC Fixed 1.235V V ±1% 20 mA 8-SOIC	0.000009999999747378752 A	60 ul		8-SOIC	Shunt	8-SOIC		Surface Mount	1.2350000143051147 V	85 °C	-40 °C	0.000029999999242136255 ul		0.009999999776482582 ul	-0.009999999776482582 ul	0.019999999552965164 A	0.003899999894201755 m	27.030000686645508 °C/W
Texas Instruments LM285DR-2-5 Shunt Voltage Reference IC Fixed 2.5V V ±1.5% 20 mA 8-SOIC	0.000019999999494757503 A	120 ul		8-SOIC	Shunt	8-SOIC		Surface Mount	2.5 V	85 °C	-40 °C	0.000019999999494757503 ul		0.014999999664723871 ul	-0.014999999664723871 ul	0.019999999552965164 A	0.003899999894201755 m	27.030000686645508 °C/W
Texas Instruments LM285BYMX/NOPB Shunt Voltage Reference IC Adjustable 1.24V 5.3 VV ±1% 20 mA 8-SOIC	0.000045000000682193786 A	50 ul		8-SOIC	Shunt	8-SOIC	Adjustable	Surface Mount	1.2400000095367432 V	85 °C	-40 °C	0.00004999999873689376 ul	5.300000190734863 V	0.009999999776482582 ul	-0.009999999776482582 ul	0.019999999552965164 A	0.003899999894201755 m
Texas Instruments LM285Z-1.2/NOPB Shunt Voltage Reference IC Fixed 1.235V V ±1% 20 mA TO-92-3	0.000009999999747378752 A	60 ul	TO-226-3, TO-226AA	TO-92-3	Shunt	TO-92-3		Through Hole	1.2350000143051147 V	85 °C	-40 °C	0.0001500000071246177 ul		0.009999999776482582 ul	-0.009999999776482582 ul	0.019999999552965164 A		27.030000686645508 °C/W
Texas Instruments LM285QDR-1-2-M Shunt Voltage Reference IC V					Shunt
Texas Instruments LM285BXMX-2.5/NOPB Shunt Voltage Reference IC Fixed 2.5V V ±1.5% 20 mA 8-SOIC	0.000019999999494757503 A	120 ul		8-SOIC	Shunt	8-SOIC		Surface Mount	2.5 V	85 °C	-40 °C	0.000029999999242136255 ul		0.014999999664723871 ul	-0.014999999664723871 ul	0.019999999552965164 A	0.003899999894201755 m	27.030000686645508 °C/W
Texas Instruments LM285DG4-2-5 Shunt Voltage Reference IC Fixed 2.5V V ±1.5% 20 mA 8-SOIC	0.000019999999494757503 A	120 ul		8-SOIC	Shunt	8-SOIC		Surface Mount	2.5 V	85 °C	-40 °C	0.000019999999494757503 ul		0.014999999664723871 ul	-0.014999999664723871 ul	0.019999999552965164 A	0.003899999894201755 m	27.030000686645508 °C/W
Texas Instruments LM285BYZ-2.5/NOPB Shunt Voltage Reference IC Fixed 2.5V V ±1.5% 20 mA TO-92-3	0.000019999999494757503 A	120 ul	TO-226-3, TO-226AA	TO-92-3	Shunt	TO-92-3		Through Hole	2.5 V	85 °C	-40 °C	0.00004999999873689376 ul		0.014999999664723871 ul	-0.014999999664723871 ul	0.019999999552965164 A		27.030000686645508 °C/W
Texas Instruments LM285D-2-5 Shunt Voltage Reference IC Fixed 2.5V V ±1.5% 20 mA 8-SOIC	0.000019999999494757503 A	120 ul		8-SOIC	Shunt	8-SOIC		Surface Mount	2.5 V	85 °C	-40 °C	0.000019999999494757503 ul		0.014999999664723871 ul	-0.014999999664723871 ul	0.019999999552965164 A	0.003899999894201755 m	27.030000686645508 °C/W
Texas Instruments LM285D-1-2 Shunt Voltage Reference IC Fixed 1.235V V ±1% 20 mA 8-SOIC	0.000009999999747378752 A	60 ul		8-SOIC	Shunt	8-SOIC		Surface Mount	1.2350000143051147 V	85 °C	-40 °C	0.000019999999494757503 ul		0.009999999776482582 ul	-0.009999999776482582 ul	0.019999999552965164 A	0.003899999894201755 m	27.030000686645508 °C/W
Texas Instruments LM285Z-2.5/NOPB Shunt Voltage Reference IC Fixed 2.5V V ±1.5% 20 mA TO-92-3	0.000019999999494757503 A	120 ul	TO-226-3, TO-226AA	TO-92-3	Shunt	TO-92-3		Through Hole	2.5 V	85 °C	-40 °C	0.0001500000071246177 ul		0.014999999664723871 ul	-0.014999999664723871 ul	0.019999999552965164 A		27.030000686645508 °C/W
Texas Instruments LM285MX-2.5/NOPB Shunt Voltage Reference IC Fixed 2.5V V ±1.5% 20 mA 8-SOIC	0.000019999999494757503 A	120 ul		8-SOIC	Shunt	8-SOIC		Surface Mount	2.5 V	85 °C	-40 °C	0.0001500000071246177 ul		0.014999999664723871 ul	-0.014999999664723871 ul	0.019999999552965164 A	0.003899999894201755 m	27.030000686645508 °C/W
Texas Instruments LM285Z-2.5/LFT7 Shunt Voltage Reference IC Fixed 2.5V V ±1.5% 20 mA TO-92-3	0.000019999999494757503 A	120 ul	TO-226-3, TO-226AA	TO-92-3	Shunt	TO-92-3		Through Hole	2.5 V	85 °C	-40 °C	0.0001500000071246177 ul		0.014999999664723871 ul	-0.014999999664723871 ul	0.019999999552965164 A		27.030000686645508 °C/W
Texas Instruments LM285LPRE3-1-2 Shunt Voltage Reference IC Fixed 1.235V V ±1% 20 mA TO-92-3	0.000009999999747378752 A	60 ul		TO-226-3, TO-92-3 (TO-226AA) Formed Leads	Shunt	TO-92-3		Through Hole	1.2350000143051147 V	85 °C	-40 °C	0.000019999999494757503 ul		0.009999999776482582 ul	-0.009999999776482582 ul	0.019999999552965164 A		27.030000686645508 °C/W
Texas Instruments LM285BYM/NOPB Shunt Voltage Reference IC Adjustable 1.24V 5.3 VV ±1% 20 mA 8-SOIC	0.000045000000682193786 A	50 ul		8-SOIC	Shunt	8-SOIC	Adjustable	Surface Mount	1.2400000095367432 V	85 °C	-40 °C	0.00004999999873689376 ul	5.300000190734863 V	0.009999999776482582 ul	-0.009999999776482582 ul	0.019999999552965164 A	0.003899999894201755 m
Texas Instruments LM285DR-1-2 Shunt Voltage Reference IC Fixed 1.235V V ±1% 20 mA 8-SOIC	0.000009999999747378752 A	60 ul		8-SOIC	Shunt	8-SOIC		Surface Mount	1.2350000143051147 V	85 °C	-40 °C	0.000019999999494757503 ul		0.009999999776482582 ul	-0.009999999776482582 ul	0.019999999552965164 A	0.003899999894201755 m	27.030000686645508 °C/W

Key Features

• 10µA to 20mA Operating Range

• Guaranteed 1% Initial Voltage Tolerance

• Guaranteed 1Ω Dynamic Impedance

• Very Low Power Consumption

Description

The LM185-1.2 is a two terminal band gap reference diode that has been designed for applications which require precision performance with micropower operation. The device provides guaranteed operating specifications at currents as low as 10µA. The nominal voltage is 1.235V with both 1% and 2% tolerances available. Some additional features are: maximum dynamic impedance of 1Ω, low noise and excellent stability over time and temperature. Advanced design, processing and testing techniques make the LM185-1.2 a superior choice over previous designs. A micropower 5V reference application is shown below. For guaranteed TC, micropower references, see the LT1034 data sheet.ApplicationsPortable Meter ReferencesPortable Test InstrumentsBattery Operated SystemsCurrent Loop Instrumentation