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Analog Devices Inc. LH0070-0H
- Part No.:
- LH0070-0H
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- TO-205AD, TO-39-3 Metal Can
- Datasheet:
-
LH0070-0H.pdf
- Description:
- IC VREF SERIES 0.1% TO39-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,356
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Product details
Overview
LH0070-0H from Linear Technology is a precision 10V buried Zener voltage reference IC operating in series or shunt mode, delivering ±0.03% initial accuracy, 5ppm/°C max temperature drift (–25°C to 85°C), <1ppmP-P noise (0.1Hz–10Hz), and 10mA sourcing/sinking capability - used in high-resolution ADC/DAC references, portable calibration standards, and inertial navigation systems.
For engineers reviewing the LH0070-0H datasheet, LH0070-0H pinout, LH0070-0H application, or LH0070-0H equivalent, key selection criteria include ultralow thermal hysteresis (5ppm), guaranteed minimum input voltage of 11.4V, ripple rejection >100dB at 120Hz, and compatibility with Kelvin-sensing layouts for sub-LSB system accuracy in 12-bit+ data converters.
Technical Context
The LH0070-0H employs a subsurface Zener diode structure eliminating surface-breakdown noise and long-term drift issues inherent in bandgap or surface Zener references. Its architecture enables dual-mode operation: as a three-terminal series regulator with active output drive, or as a two-terminal shunt device with identical precision specs.
Thermal regulation is minimized via low-thermal-resistance metal-can packaging (θJA = 150°C/W) and internal design that limits die self-heating effects. Output trimming is achieved by injecting current into the ground pin through a 5Ω series resistor, enabling fine adjustment while preserving low-drift performance - critical for metrology-grade applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10.000 V at 25°C - provides stable 10V reference for absolute measurement scaling |
| Initial Accuracy | ±0.03% - ensures ≤3mV error before calibration in precision instrumentation |
| Temp Coefficient | 5 ppm/°C max (–25°C to 85°C) - contributes ≤0.2% drift over industrial range, meeting 1/2 LSB error budget in 12-bit systems |
| Noise (0.1–10Hz) | <1 ppmP-P (6 µVP-P) - enables sub-µV resolution in low-frequency metrology without external filtering |
| Line Regulation | 0.006% over 13–33V input - maintains stability despite supply rail variation in battery-backed or unregulated systems |
| Load Regulation | 0.01% over 0–5mA load - supports direct driving of op-amp inputs or DAC reference pins without buffering |
| Min Input Voltage | 11.4 V - defines lowest usable supply for reliable regulation under full load and temperature extremes |
| Ripple Rejection | >100 dB at 120 Hz - suppresses AC line noise in power-supply-derived reference rails |
Pinout & Package
H Package: 3-lead TO-39 metal can (LH0070-0H), hermetically sealed, θJA = 150°C/W, θJC = 45°C/W, TJMAX = 150°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INPUT) | Positive supply input | Accepts 11.4–40V DC; must be ≥11.4V for regulation; handles up to 35V differential vs output |
| 2 (OUTPUT) | Regulated 10V output node | Sources/sinks up to 10mA; low 0.2–0.6Ω output impedance enables direct loading |
| 3 (GROUND) | Reference ground / trim terminal | Used as sense point in Kelvin connections; current injection enables output trimming (±0.1% typical range) |
Key Features
| Feature | Design Value |
|---|---|
| Buried Zener core | Eliminates surface breakdown noise and aging effects - delivers 0.2%/year long-term stability |
| Dual-mode operation | Functions identically as 3-terminal series regulator or 2-terminal shunt device - simplifies board layout reuse |
| Kelvin-compatible ground pin | Carries only ~1mA quiescent current - enables remote sensing to cancel PCB trace IR drop in precision systems |
| Ultralow thermal hysteresis | 5ppm max - ensures repeatable voltage after thermal cycling, critical for calibration lab equipment |
| High PSRR | >100dB at 120Hz - rejects transformer-coupled ripple without external LC filters |
| Trim-enabled accuracy | Ground-pin current injection allows ±0.1% fine adjustment - supports system-level TC trimming in DAC references |
Applications
| High-Resolution Data Acquisition | Portable Calibration Standards |
|---|---|
Use Scenario: 16-bit SAR ADC in automated test equipment requiring stable reference across –25°C to 70°C ambient. IC Role / Device Role / Timing Role: Primary 10V reference source for ADC internal conversion ladder and external signal conditioning. Use Value: 5ppm/°C drift ensures ≤0.8 LSB total error over temperature - eliminates need for per-sample reference recalibration. | Use Scenario: Battery-powered handheld multimeter with auto-ranging and 6½-digit display. IC Role / Device Role / Timing Role: Master voltage standard for internal DMM reference chain and autoranging DACs. Use Value: <1ppmP-P noise and 0.2%/year stability enable certified calibration traceability without annual factory recalibration. |
| Inertial Navigation Systems | Precision Industrial Scales |
Use Scenario: Gyro and accelerometer signal conditioning in aerospace IMUs operating from –55°C to 125°C. IC Role / Device Role / Timing Role: Reference for low-noise PGA stages and sigma-delta ADC front-ends measuring micro-g accelerations. Use Value: Buried Zener construction prevents parametric shift during thermal shock - maintains scale factor accuracy after rapid altitude changes. | Use Scenario: Legal-for-trade weighing platform using strain gauge bridges and 24-bit delta-sigma ADCs. IC Role / Device Role / Timing Role: Excitation and reference source for bridge ratiometric measurement and digital offset correction. Use Value: 0.01% load regulation ensures consistent bridge excitation regardless of sensor cable length or contact resistance variations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1031BMH | Same pinout, tighter 3ppm/°C drift spec (–25°C to 85°C), lower 0.006% line regulation | Preferred for military/aerospace where extended temp drift guarantee required | Select LT1031BMH when full MIL-STD-883 screening and guaranteed 3ppm/°C drift are mandatory |
| AD581JH | Pin-compatible but higher 10ppm/°C drift, 2× higher 12µVP-P noise, no shunt-mode operation | Limited to series-mode only; unsuitable for low-power shunt-regulated designs | Choose AD581JH only if legacy design reuse is required and 5ppm/°C drift is not needed |
Compared with LH0070-0H, LT1031BMH offers superior drift performance and screening for harsh environments, while AD581JH provides legacy compatibility at the cost of noise, drift, and operational flexibility - making LH0070-0H the optimal balance of precision, dual-mode utility, and cost for industrial metrology.
Availability
LH0070-0H is available at Aetrix Electronics and suitable for high-resolution data acquisition, portable calibration standards, and inertial navigation systems requiring stable component supply with guaranteed long-term availability and traceable lot history.
Supply support for LH0070-0H 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
Linear Technology Corporation (now part of Analog Devices) designs high-performance analog ICs focused on precision, power management, and signal integrity - headquartered in Milpitas, CA.
The LH0070-0H belongs to Linear's precision voltage reference product line, engineered specifically for metrology, aerospace, and industrial instrumentation where long-term stability, low noise, and thermal immunity are non-negotiable.
FAQ
What is the maximum load current the LH0070-0H can source or sink while maintaining specification?
The LH0070-0H can source or sink up to 10mA while staying within its specified load regulation of 0.01% (0–5mA) and 0.03% (0–10mA). At 10mA, output voltage change remains ≤300µV - verified across –55°C to 125°C operating range. Exceeding 10mA risks thermal overload and deviation from guaranteed accuracy specs in the LH0070-0H datasheet.
Can the LH0070-0H be used in shunt mode like a two-terminal Zener diode?
Yes, the LH0070-0H operates identically in shunt mode with the input pin left open, functioning as a precision two-terminal reference with the same 10V output accuracy, 5ppm/°C drift, and <1ppmP-P noise as in series mode. Minimum shunt current is 1.1mA, and it regulates stably down to 0mA when input is disconnected - confirmed in LH0070-0H electrical characteristics tables.
What is the guaranteed temperature coefficient specification for LH0070-0H over its full operating range?
The LH0070-0H guarantees ±0.2% total output change from –55°C to 125°C, corresponding to ≤7ppm/°C effective drift over the full range. However, its primary specification is 5ppm/°C max over –25°C to 85°C - the range where all key parameters including noise, line/load regulation, and hysteresis are fully characterized and guaranteed per LH0070-0H datasheet Note 6.
How does air movement affect LH0070-0H noise performance, and how can it be mitigated?
Air turbulence increases LH0070-0H 0.1–10Hz noise by nearly 10× due to thermoelectric voltages induced across Kovar leads in its TO-39 package. Shielding the LH0070-0H with a small foam cup or sealed enclosure reduces this effect. This sensitivity is specific to metal-can packages - DIP variants show negligible airflow dependence, as documented in LH0070-0H TPC16 and TA07.
Is LH0070-0H pin-compatible with AD581, and what are the key functional improvements?
Yes, LH0070-0H is pin-compatible with AD581 and serves as a direct replacement. Key improvements include 5ppm/°C vs 10ppm/°C drift, <1ppmP-P vs 12ppmP-P noise, >100dB vs 80dB ripple rejection, and dual-mode (series/shunt) operation - all confirmed in LH0070-0H cross-reference guide and electrical characteristics comparison tables.
LH0070-0H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- TO-205AD, TO-39-3 Metal Can
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 10V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- -
- Noise - 0.1Hz to 10Hz:
- 6µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 11.4V ~ 40V
- Current - Supply:
- 5mA
- Current - Cathode:
- -
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-39-3
LH0070-0H FAQ
1.How can I place an order for LH0070-0H through Aetrix?
Please submit a Request for Quotation (RFQ) for LH0070-0H 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 LH0070-0H reliable?
The price and inventory of LH0070-0H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LH0070-0H is usually 5 days.
3.What payment methods are accepted for LH0070-0H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LH0070-0H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LH0070-0H?
LH0070-0H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LH0070-0H 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 LH0070-0H?
For technical support, including LH0070-0H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LH0070-0H requirements.
6.How does Aetrix verify that LH0070-0H is sourced from the original manufacturer or authorized distributors?
All LH0070-0H 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 LH0070-0H meets industry standards.
7.What is the process for return or replacement of LH0070-0H?
All LH0070-0H units undergo pre-shipment inspection (PSI). If there is an issue with LH0070-0H, 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 LH0070-0H part is unused and in its original packaging.
Return procedure for LH0070-0H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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