# LT1236 - Precision Reference

#### Features

- Ultra-Low Drift: 5ppm/°C Max
- Trimmed to High Accuracy: 0.05% Max
- Industrial Temperature Range SO Package
- Operates in Series or Shunt Mode
- Pin Compatible with AD586, AD587
- Output Sinks and Sources in Series Mode
- Very Low Noise < 1ppm P-P (0.1Hz to 10Hz)
- 100% Noise Tested
- > 100dB Ripple Rejection

#### Typical Application

#### Description

The LT1236 is a precision reference that combines ultralow drift and noise with excellent long-term stability and high output accuracy. The reference output will both source and sink up to 10mA and is almost totally immune to input voltage variations. Two voltages are available: 5V and 10V.The 10V version can be used as a shunt regulator (two-terminal zener) with the same precision characteristics as the three-terminal connection. Special care has been taken to minimize thermal regulation effects and temperature induced hysteresis. The LT1236 combines both superior accuracy and temperature coefficient specifications with out the use of high power,on-chipheaters.The LT1236 references are based on a buried zener diode structure which eliminates noise and stability problems with surface breakdown devices. Further, a subsurface zener exhibits better temperature drift and time stability than even the best band-gap references.#### Packaging

**CAD Symbols and Footprints: ** The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number | Package | Code | Temp | Package Drawing |
RoHS |
---|---|---|---|---|---|

LT1236ACN8-10#PBF | N-8 | N | C | 05-08-1510 (N8) | Yes |

LT1236ACN8-5#PBF | N-8 | N | C | 05-08-1510 (N8) | Yes |

LT1236ACS8-10#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1236ACS8-10#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1236ACS8-5#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1236ACS8-5#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1236AIN8-10#PBF | N-8 | N | I | 05-08-1510 (N8) | Yes |

LT1236AIS8-10#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1236AIS8-10#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1236AIS8-5#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1236AIS8-5#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1236BCN8-10#PBF | N-8 | N | C | 05-08-1510 (N8) | Yes |

LT1236BCN8-5#PBF | N-8 | N | C | 05-08-1510 (N8) | Yes |

LT1236BCS8-10#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1236BCS8-10#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1236BCS8-5#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1236BCS8-5#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1236BIN8-10#PBF | N-8 | N | I | 05-08-1510 (N8) | Yes |

LT1236BIN8-5#PBF | N-8 | N | I | 05-08-1510 (N8) | Yes |

LT1236BIS8-10#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1236BIS8-10#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1236BIS8-5#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1236BIS8-5#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1236CCN8-10#PBF | N-8 | N | C | 05-08-1510 (N8) | Yes |

LT1236CCN8-5#PBF | N-8 | N | C | 05-08-1510 (N8) | Yes |

LT1236CCS8-10#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1236CCS8-10#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1236CCS8-5#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1236CCS8-5#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |

LT1236CIN8-10#PBF | N-8 | N | I | 05-08-1510 (N8) | Yes |

LT1236CIN8-5#PBF | N-8 | N | I | 05-08-1510 (N8) | Yes |

LT1236CIS8-10#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1236CIS8-10#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1236CIS8-5#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

LT1236CIS8-5#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |

#### Order Info

- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details

#### Package Variations and Pricing

^{*}The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

#### Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.Click here to view our complete list of demo boards

#### Applications

- A/D and D/A Converters
- Precision Regulators
- Precision Scales
- Inertial Navigation Systems
- Digital Voltmeters

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#### Design Tools

### LTspice

LTspice^{®} software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

**Models for the following parts are available in LTspice:**

LT1236-10

LT1236-5

#### Technical Support

- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.