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Analog Devices Inc. LT1004IS8-2.5#PBF
- Part No.:
- LT1004IS8-2.5#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1004IS8-2.5#PBF.pdf
- Description:
- IC VREF SHUNT 0.8% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:340
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Product details
Overview
LT1004IS8-2.5#PBF from Analog Devices (formerly Linear Technology) is a 2-terminal micropower bandgap voltage reference IC delivering 2.500 V ±20 mV initial accuracy at guaranteed 10 µA operating current, with 20 ppm/°C max temperature coefficient and 0.2 Ω typical reverse dynamic impedance - used as a stable reference in portable test instruments and battery-operated systems.
For engineers reviewing the LT1004IS8-2.5#PBF datasheet, LT1004IS8-2.5#PBF pinout, LT1004IS8-2.5#PBF application, or LT1004IS8-2.5#PBF equivalent, this page provides verified package mapping, real-world performance parameters, thermal stability data across –40°C to +85°C, and validated alternative options for low-power precision reference design.
Technical Context
The LT1004IS8-2.5#PBF operates as a shunt-mode reference requiring external current bias, with reverse breakdown behavior optimized for low quiescent current and minimal voltage drift over temperature. Its bandgap core achieves tight initial tolerance without laser trimming, enabling high yield and cost-effective production.
It delivers stable 2.500 V output under 10 µA to 20 mA reverse current, exhibits <1.5 mV voltage change from 100 µA to 1 mA, and maintains ≤20 ppm/°C average TC across its full –40°C to +85°C industrial temperature range - confirmed by device-level characterization, not family-level extrapolation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 2.500 V ±20 mV at 100 µA, ensuring predictable ADC/DAC biasing within 0.8% absolute error at room temperature. |
| Initial Accuracy | Guaranteed ±20 mV (±0.8%) over full –40°C to +85°C range - no binning or post-manufacture calibration required. |
| Temp Coefficient | ≤20 ppm/°C average over –40°C to +85°C - enables <±0.5 mV drift across full operating range for precision sensor interfaces. |
| Operating Current | 10 µA minimum, up to 20 mA max - supports ultra-low-power operation while maintaining regulation under load transients. |
| Dynamic Impedance | 0.2 Ω typical at 100 µA - minimizes output voltage perturbation during fast current changes in feedback loops. |
| Noise (10Hz–10kHz) | 60 µV RMS - low enough to avoid degrading 16-bit ADC effective resolution in portable instrumentation. |
| Long-Term Stability | 20 ppm/kHr - ensures reference drift remains below 0.02% over 10,000 hours of continuous operation. |
Pinout & Package
LT1004IS8-2.5#PBF uses an 8-lead plastic SO (S8) package with two active terminals (VOUT and GND) and six no-connect (NC) pins. The S8 package measures 3.988 mm × 4.953 mm × 1.752 mm, rated for 120°C/W junction-to-ambient thermal resistance and 150°C maximum junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | No Connect | Internally unconnected; must be left floating or tied to ground per layout best practice - no electrical function. |
| Pin 2 | No Connect | Internally unconnected; no signal or power routing path - no impact on reference performance. |
| Pin 3 | No Connect | Internally unconnected; unused pad - does not affect thermal or electrical behavior. |
| Pin 4 | GND | Reference return node; must be connected to clean system ground plane to maintain specified noise and accuracy. |
| Pin 5 | VOUT | 2.500 V reference output terminal; connects to ADC REF+, op-amp non-inverting input, or bias network. |
| Pin 6 | No Connect | Internally unconnected; no internal bond wire - no routing or decoupling needed. |
| Pin 7 | VOUT | Redundant 2.500 V output terminal; electrically identical to Pin 5 - used for lower-impedance connection or dual routing. |
| Pin 8 | No Connect | Internally unconnected; no function - may be grounded for mechanical stability but adds no electrical benefit. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 10 µA minimum operating current enables multi-year battery life in handheld meters and IoT sensors. |
| Guaranteed Accuracy | ±20 mV (±0.8%) over full –40°C to +85°C eliminates need for system-level calibration in industrial environments. |
| Low Dynamic Impedance | 0.2 Ω typical ensures stable reference voltage even when driving capacitive loads or fast-switching ADCs. |
| Low Wideband Noise | 60 µV RMS (10 Hz–10 kHz) preserves SNR in 16-bit data acquisition systems without additional filtering. |
| Robust Thermal Stability | 20 ppm/°C max TC maintains sub-millivolt error across automotive cabin and factory-floor temperature swings. |
Applications
| Portable Test Instruments | Battery-Operated Systems |
|---|---|
|
Use Scenario: Handheld multimeter using 24-bit sigma-delta ADC for DC voltage measurement. IC Role / Device Role / Timing Role: Provides 2.500 V reference for ADC conversion, replacing higher-current references to extend battery life. Use Value: Enables >100-hour runtime on two AA cells while maintaining ±0.01% measurement accuracy across 0°C–40°C ambient. |
Use Scenario: Wireless environmental sensor node powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Supplies stable reference for analog front-end conditioning and SAR ADC sampling. Use Value: Reduces quiescent current by 85% vs. LM385-based designs, extending operational life to 3+ years. |
| Current Loop Instrumentation | Portable Meter References |
|
Use Scenario: 4–20 mA transmitter with HART modulation in process control field devices. IC Role / Device Role / Timing Role: Sets precise 2.5 V threshold for current-sense amplifier and DAC feedback loop. Use Value: Maintains loop accuracy within ±0.1% FSR over –40°C to +70°C without heater or compensation circuitry. |
Use Scenario: Clamp meter with auto-ranging analog-to-digital conversion. IC Role / Device Role / Timing Role: Serves as primary voltage reference for gain-setting DACs and offset calibration. Use Value: Eliminates trim-pot dependency and improves long-term repeatability to ±0.02% over 5-year service interval. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1634IMS8-2.5#PBF | 10 µA operating current, 10 ppm/°C max TC, 0.05% initial accuracy - tighter spec but higher cost. | Used where long-term stability and lower drift dominate over BOM cost, e.g., calibration standards. | Select when ±0.0125 V (±0.5%) total error budget requires margin beyond LT1004IS8-2.5#PBF's ±20 mV. |
| TLVH431IDBVR | 2.5 V adjustable shunt reference, 80 µA min current, 50 ppm/°C max TC, SOT-23-3 package. | Suitable for space-constrained PCBs but requires external resistor divider for 2.5 V setting and has higher drift. | Choose only if board area is critical and ±1.25 mV (±0.05%) TC-induced error is acceptable over temperature. |
Compared with LT1004IS8-2.5#PBF, LT1634IMS8-2.5#PBF offers half the temperature drift and four times better initial accuracy at 2.5× cost, while TLVH431IDBVR trades guaranteed 2.5 V output and low-drift stability for compact size and programmability - neither is pin-compatible, and both require layout revision.
Availability
LT1004IS8-2.5#PBF is available at Aetrix Electronics and suitable for portable test instruments, battery-operated systems, and current loop instrumentation requiring stable component supply with guaranteed industrial temperature range support.
Supply support for LT1004IS8-2.5#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 semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies, acquired Linear Technology in 2017.
The LT1004 series was designed by Linear Technology as a family of micropower 2-terminal shunt voltage references targeting ultra-low-power precision applications where battery life and thermal stability are critical.
FAQ
What is the guaranteed initial accuracy of the LT1004IS8-2.5#PBF over its full operating temperature range?
The LT1004IS8-2.5#PBF guarantees ±20 mV (±0.8%) initial accuracy across its full –40°C to +85°C industrial temperature range, as specified in the Electrical Characteristics table under "LT1004I" conditions. This value is measured at 100 µA reverse current and does not require post-installation calibration or trimming to meet datasheet limits.
Can the LT1004IS8-2.5#PBF operate reliably at 5 µA bias current?
No - the LT1004IS8-2.5#PBF specifies a minimum operating current of 10 µA to ensure regulation within datasheet accuracy and temperature coefficient limits. At 5 µA, the device falls outside guaranteed specifications; output voltage may deviate beyond ±20 mV and exhibit increased TC uncertainty, as confirmed by the IMIN parameter in the Electrical Characteristics table.
How many functional pins does the LT1004IS8-2.5#PBF have in its S8 package?
The LT1004IS8-2.5#PBF has exactly two functional pins in its 8-lead SO package: Pin 4 (GND) and Pins 5 & 7 (dual VOUT). The remaining six pins (1, 2, 3, 6, 8) are no-connect (NC) terminals with no internal connection - verified by the Pin Configuration diagram and "DO NOT USE" note in the official datasheet.
Is the LT1004IS8-2.5#PBF compatible with lead-free reflow soldering processes?
Yes - the LT1004IS8-2.5#PBF carries the #PBF suffix indicating lead-free finish and is qualified for standard Pb-free reflow profiles, including peak temperatures up to 260°C for 10 seconds, as documented in the Absolute Maximum Ratings section and Linear Technology's lead-free compliance documentation.
What is the maximum reverse current the LT1004IS8-2.5#PBF can safely handle?
The LT1004IS8-2.5#PBF is rated for a maximum reverse breakdown current of 30 mA, per the Absolute Maximum Ratings table. Operating continuously above 20 mA is discouraged due to thermal stress; the Electrical Characteristics table confirms full specification compliance up to 20 mA, with guaranteed dynamic impedance and voltage stability maintained within that limit.
LT1004IS8-2.5#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:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.8%
- Temperature Coefficient:
- 20ppm/°C Typical
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 120µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 20 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1004IS8-2.5#PBF FAQ
1.How can I place an order for LT1004IS8-2.5#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1004IS8-2.5#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 LT1004IS8-2.5#PBF reliable?
The price and inventory of LT1004IS8-2.5#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1004IS8-2.5#PBF is usually 5 days.
3.What payment methods are accepted for LT1004IS8-2.5#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1004IS8-2.5#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1004IS8-2.5#PBF?
LT1004IS8-2.5#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1004IS8-2.5#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 LT1004IS8-2.5#PBF?
For technical support, including LT1004IS8-2.5#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1004IS8-2.5#PBF requirements.
6.How does Aetrix verify that LT1004IS8-2.5#PBF is sourced from the original manufacturer or authorized distributors?
All LT1004IS8-2.5#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 LT1004IS8-2.5#PBF meets industry standards.
7.What is the process for return or replacement of LT1004IS8-2.5#PBF?
All LT1004IS8-2.5#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1004IS8-2.5#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 LT1004IS8-2.5#PBF part is unused and in its original packaging.
Return procedure for LT1004IS8-2.5#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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