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Analog Devices Inc. LT1236BCS8-5#PBF
- Part No.:
- LT1236BCS8-5#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1236BCS8-5#PBF.pdf
- Description:
- IC VREF PRECISION 0.1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,499
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Product details
Overview
LT1236BCS8-5#PBF from Analog Devices (formerly Linear Technology) is a precision 5V series/shunt voltage reference IC featuring 0.005% initial accuracy, 10ppm/°C max temperature coefficient, and ultra-low 3µVP-P (0.1Hz–10Hz) noise. It sources/sinks ±10mA, operates from 6V to 40V input, and delivers stable output for high-resolution ADC/DAC biasing in industrial instrumentation.
For engineers reviewing the LT1236BCS8-5#PBF datasheet, LT1236BCS8-5#PBF pinout, LT1236BCS8-5#PBF application, or LT1236BCS8-5#PBF equivalent, key selection criteria include long-term stability (20ppm/1000h), thermal hysteresis (10ppm), ripple rejection (>100dB), and compatibility with precision scale and inertial navigation signal chains.
Technical Context
The LT1236BCS8-5#PBF uses a subsurface buried zener diode architecture-eliminating surface-breakdown noise and drift-to achieve superior stability versus bandgap references. Its dual-mode operation (series or shunt) enables flexible system integration without external components.
Thermal regulation effects are minimized via low-power design and package stress mitigation; hysteresis is limited to 10ppm over ±25°C cycling. The trim pin (Pin 5) supports output adjustment while maintaining TC integrity through 13:1 attenuation and 100kΩ input impedance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.995V to 5.005V at 25°C - ensures ≤0.1% full-scale error in 12-bit systems over temperature |
| Temp Coefficient | 5ppm/°C to 10ppm/°C - contributes ≤0.4LSB drift across 0°C–70°C in 12-bit applications |
| Noise (0.1–10Hz) | 3.0µVP-P - enables sub-16-bit resolution in low-frequency precision measurement |
| Load Regulation | 10–20ppm/mA sourcing - maintains voltage stability under dynamic load changes up to ±10mA |
| Line Regulation | 2–6ppm/V (7.2–40V input) - rejects supply ripple without external filtering |
| Long-Term Stability | 20ppm/1000h - reduces calibration frequency in field-deployed test equipment |
| Ripple Rejection | >100dB at 150Hz - suppresses switching regulator noise in mixed-signal PCBs |
Pinout & Package
LT1236BCS8-5#PBF uses an 8-lead SOIC (S8) package with exposed pad not connected internally. Pins 1, 3, 5, and 6 are NC (no connect); Pin 2 = VIN; Pin 4 = GND; Pin 7 = VOUT; Pin 8 = TRIM.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 2 (VIN) | Input supply terminal | Accepts 6V–40V; minimum 1V differential required for regulation |
| Pin 4 (GND) | Reference ground | Carries only ~1mA in series mode - suitable as Kelvin sense point |
| Pin 7 (VOUT) | Regulated output | Sources/sinks ±10mA; stable with capacitive loads ≤1000pF |
| Pin 8 (TRIM) | Voltage adjustment node | 100kΩ input Z; 13:1 attenuation to output; enables ±70mV trim range |
Key Features
| Feature | Design Value |
|---|---|
| Buried zener topology | Eliminates surface breakdown noise and time-dependent drift vs. bandgap references |
| Dual-mode operation | Functions as 3-terminal series reference or 2-terminal shunt regulator without redesign |
| Ultra-low thermal hysteresis | 10ppm over ±25°C cycle - critical for metrology-grade repeatability |
| 100% noise tested | Guarantees ≤3µVP-P (0.1–10Hz) - verified per unit, not typical spec |
| High PSRR | >100dB at 150Hz - enables direct use after DC/DC converters without LC filtering |
Applications
| High-Resolution Data Acquisition | Precision Industrial Scales |
|---|---|
Use Scenario: 16-bit SAR ADC front-end in portable multimeter requiring <10ppm total error budget. IC Role / Device Role / Timing Role: Primary voltage reference establishing full-scale range for analog input channel. Use Value: 10ppm/°C TC and 20ppm/1000h stability ensure calibration validity over 12 months in uncontrolled environments. | Use Scenario: Load cell excitation and bridge offset compensation in Class III legal-for-trade weighing systems. IC Role / Device Role / Timing Role: Stable 5V excitation source and ratiometric reference for instrumentation amplifier chain. Use Value: 3µVP-P low-frequency noise prevents digitization of mechanical vibration artifacts in sub-milligram resolution. |
| Inertial Navigation Systems | Digital Voltmeters |
Use Scenario: Biasing gyroscope and accelerometer signal conditioning in aerospace IMUs operating across –40°C to +85°C. IC Role / Device Role / Timing Role: Reference for sigma-delta ADCs digitizing MEMS sensor outputs. Use Value: Buried zener construction provides 5× better long-term drift than bandgap alternatives, reducing recalibration intervals. | Use Scenario: 7½-digit bench DVM requiring 0.005% absolute accuracy and <0.1ppm/°C drift contribution. IC Role / Device Role / Timing Role: Master reference for internal DAC-based auto-zero and gain calibration loops. Use Value: Pre-trimmed 0.005% initial accuracy eliminates factory trimming labor; 10ppm/°C TC meets ANSI C37.90.1 stability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR445BRZ | 5.000V output, 3ppm/°C max TC, 1.8µVP-P noise - lower drift but higher cost and no shunt mode | Optimized for ultra-stable lab equipment; lacks dual-mode flexibility | Select when TC is primary constraint and shunt operation is unnecessary |
| REF5050AIDR | 5.000V output, 3ppm/°C max TC, 5.5µVP-P noise - higher noise, requires external buffer for >10mA loads | Suited for battery-powered portable instruments with moderate noise tolerance | Select when cost sensitivity outweighs ultra-low noise requirement |
Compared with ADR445BRZ and REF5050AIDR, the LT1236BCS8-5#PBF uniquely supports both series and shunt configurations without external components, offers guaranteed 3µVP-P noise, and maintains 10ppm/°C TC across its full industrial temperature range - making it optimal for space-constrained, multi-role reference designs.
Availability
LT1236BCS8-5#PBF is available at Aetrix Electronics and suitable for high-resolution data acquisition, precision industrial scales, inertial navigation systems, and digital voltmeters requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LT1236BCS8-5#PBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LT1236 family was designed by Linear Technology (acquired by ADI in 2017) specifically for metrology-grade applications demanding ultra-low drift, buried-zener stability, and dual-mode operational flexibility in harsh environments.
FAQ
What is the maximum load current the LT1236BCS8-5#PBF can source or sink?
The LT1236BCS8-5#PBF can source and sink up to ±10mA while maintaining specified accuracy and regulation. At zero load, output noise is worst-case; optimal transient response occurs when sourcing 2–10mA. Sinking capability requires VIN ≥ 6V to maintain 1V minimum differential.
Does the LT1236BCS8-5#PBF support shunt-mode operation like a two-terminal zener?
Yes, the LT1236BCS8-5#PBF supports true shunt-mode operation: with VIN open, it regulates VOUT to 5V using only GND and VOUT pins, drawing 1.1–1.7mA minimum current. This enables drop-in replacement for precision zeners in legacy designs without circuit modification.
How does the trim pin (Pin 8) affect temperature coefficient in the LT1236BCS8-5#PBF?
The LT1236BCS8-5#PBF trim pin has 100kΩ input impedance and 13:1 attenuation to VOUT. To avoid TC degradation, external trim voltage must track the pin's inherent –1.7mV/°C drift. The recommended R1/R2 network (27kΩ/50kΩ) compensates this, limiting TC shift to <1ppm/°C during adjustment.
What is the long-term stability specification for the LT1236BCS8-5#PBF?
The LT1236BCS8-5#PBF exhibits 20ppm maximum long-term stability after 1000 hours of non-cumulative operation. Drift follows a logarithmic profile: second 1000-hour period typically shows <33% of first period's drift, improving further with time and burn-in preconditioning.
Is the LT1236BCS8-5#PBF pin-compatible with other industry-standard references?
Yes, the LT1236BCS8-5#PBF is pin-compatible with AD586 and AD587 in the 8-lead SOIC package. Pin mapping (VIN, GND, VOUT, TRIM) matches directly, enabling drop-in replacement where 5V output, ±10mA drive, and buried-zener performance are required.
LT1236BCS8-5#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Reference Type:
- Series, Buried Zener
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 10ppm/°C
- Noise - 0.1Hz to 10Hz:
- 3µVp-p
- Noise - 10Hz to 10kHz:
- 2.2µVrms
- Voltage - Input:
- 7.2V ~ 40V
- Current - Supply:
- 1.5mA
- Current - Cathode:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1236BCS8-5#PBF FAQ
1.How can I place an order for LT1236BCS8-5#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1236BCS8-5#PBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LT1236BCS8-5#PBF reliable?
The price and inventory of LT1236BCS8-5#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1236BCS8-5#PBF is usually 5 days.
3.What payment methods are accepted for LT1236BCS8-5#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1236BCS8-5#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1236BCS8-5#PBF?
LT1236BCS8-5#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1236BCS8-5#PBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LT1236BCS8-5#PBF?
For technical support, including LT1236BCS8-5#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1236BCS8-5#PBF requirements.
6.How does Aetrix verify that LT1236BCS8-5#PBF is sourced from the original manufacturer or authorized distributors?
All LT1236BCS8-5#PBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LT1236BCS8-5#PBF meets industry standards.
7.What is the process for return or replacement of LT1236BCS8-5#PBF?
All LT1236BCS8-5#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1236BCS8-5#PBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LT1236BCS8-5#PBF part is unused and in its original packaging.
Return procedure for LT1236BCS8-5#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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