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Analog Devices Inc. LT1634AIS8-4.096#TRPBF
- Part No.:
- LT1634AIS8-4.096#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1634AIS8-4.096#TRPBF.pdf
- Description:
- IC VREF SHUNT 0.05% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,088
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Product details
Overview
LT1634AIS8-4.096#TRPBF from Analog Devices (formerly Linear Technology) is a micropower precision shunt voltage reference delivering a stable 4.096V output with ±0.05% initial accuracy, 10ppm/°C max temperature drift, and 0.15Ω typical dynamic impedance. It operates from 20µA minimum current and supports industrial temperature range (–40°C to +85°C) in an 8-lead SOIC package. It serves as a high-accuracy reference for 12-bit ADCs, portable calibrators, and precision regulators.
For engineers reviewing the LT1634AIS8-4.096#TRPBF datasheet, LT1634AIS8-4.096#TRPBF pinout, LT1634AIS8-4.096#TRPBF application, or LT1634AIS8-4.096#TRPBF equivalent, key selection criteria include guaranteed industrial-grade drift performance, low-noise (30µVP-P, 0.1Hz–10Hz), hysteresis <160ppm over full temperature cycling, and compatibility with capacitive loads without external compensation.
Technical Context
The LT1634AIS8-4.096#TRPBF uses trimmed thin-film resistors and advanced curvature correction to achieve its 0.05% initial accuracy and 10ppm/°C max drift across –40°C to +85°C. Its bandgap-based shunt architecture functions as a two-terminal device requiring only an external current source and load, eliminating need for output capacitors while remaining stable with up to 0.1µF capacitance.
It delivers 4.096V reverse breakdown at 20µA test current, with dynamic impedance ≤0.75Ω (typical 0.15Ω) over 20µA–2mA operating range. Low-frequency noise is specified at 30µVP-P (0.1Hz–10Hz), and hysteresis is limited to 160ppm after thermal cycling between –40°C and +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V nominal; enables direct 12-bit full-scale alignment with 4096-count systems (e.g., 12-bit ADCs) |
| Initial Accuracy | ±0.05% (±2.05mV); guarantees system calibration integrity without post-manufacture trimming |
| Temp Coefficient | 10ppm/°C max over –40°C to +85°C; ensures <±0.42mV total drift across full industrial range |
| Min Operating Current | 15µA; supports ultra-low-power designs such as battery-powered meters and IoT sensors |
| Dynamic Impedance | ≤0.75Ω (typ 0.15Ω) at 20µA–2mA; maintains regulation stability under varying load currents |
| Low-Freq Noise | 30µVP-P (0.1Hz–10Hz); minimizes quantization error in high-resolution data acquisition |
| Hysteresis | 160ppm after –40°C/+85°C cycling; prevents voltage shift due to thermal stress in field-deployed equipment |
Pinout & Package
LT1634AIS8-4.096#TRPBF is housed in an 8-lead plastic SOIC (S8) package (JEDEC MS-012AC), 3.9mm × 4.9mm body, 1.27mm pitch. Pin 4 is GND; Pin 5 is VOUT; Pins 1–3 and 6–8 are DNC (do not connect) or NC per datasheet - internally unconnected or tied to substrate.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1, 2, 3, 6, 7, 8 | DNC / NC | No internal connection; must remain unconnected to avoid parasitic leakage or latch-up |
| Pin 4 | GND | Reference ground node; requires low-impedance PCB return path for noise immunity |
| Pin 5 | VOUT | 4.096V shunt output terminal; connects to cathode of external current source and load |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 15µA minimum current enables >10-year battery life in portable calibrators and handheld DMMs |
| Guaranteed industrial temp range | –40°C to +85°C operation with full spec compliance - suitable for automotive cabin electronics and industrial PLC modules |
| No output capacitor required | Stable with 0µF output capacitance; simplifies layout and eliminates capacitor aging/reliability concerns |
| Low dynamic impedance | ≤0.75Ω ensures <1mV output deviation under 1mA load transients - critical for precision DAC references |
| Trimmed thin-film resistors | Enables ±0.05% initial accuracy without laser trimming post-assembly - improves production yield and consistency |
Applications
| Portable Meters | Precision Regulators |
|---|---|
Use Scenario: Handheld digital multimeters (DMMs) and portable pH/temperature analyzers requiring stable, battery-operated voltage references. IC Role / Device Role / Timing Role: Shunt reference providing 4.096V基准 for 12-bit ADC front-end, enabling exact 1mV/count resolution. Use Value: 0.05% accuracy and 10ppm/°C drift ensure measurement repeatability across environmental conditions without recalibration. | Use Scenario: Low-noise linear regulators (e.g., LDOs) in medical instrumentation where output stability directly impacts sensor signal fidelity. IC Role / Device Role / Timing Role: Precision feedback reference for adjustable regulator control loop, replacing less accurate Zener diodes. Use Value: 30µVP-P low-frequency noise prevents ripple coupling into sensitive analog signal chains. |
| A/D Converters | Calibrators |
Use Scenario: Data acquisition systems using SAR or sigma-delta ADCs (e.g., LTC1286) requiring ratiometric or absolute reference stability. IC Role / Device Role / Timing Role: Primary reference source for 12-bit converter; referenced in typical app circuit TA03 with 0.1µF bypass. Use Value: Matched 4.096V output aligns exactly with 4096-code full scale - eliminates software scaling and gain error. | Use Scenario: Benchtop and field-deployable calibration standards for sensor simulators and transmitter testers. IC Role / Device Role / Timing Role: Primary traceable voltage standard within self-contained calibrator hardware. Use Value: 160ppm hysteresis and <±0.42mV total drift over temperature ensure calibration validity across storage and operational cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1460ACS8-4.096#TRPBF | Series reference (3-pin), requires input voltage ≥5.5V; higher quiescent current (60µA); ±0.075% initial accuracy | Not pin-compatible; needs external pass transistor for shunt-like use; unsuitable for low-voltage supplies (<5V) | Select when input rail ≥5.5V is available and series topology simplifies biasing in fixed-supply systems |
| REF43FH4096IDR | Shunt reference; ±0.04% initial accuracy; 3ppm/°C drift; 60µA min current; SO-8 package | Higher power consumption limits battery life; tighter drift suits metrology-grade instruments but adds cost | Select when sub-3ppm/°C drift and 0.04% accuracy justify higher current draw and BOM cost in lab-grade equipment |
Compared with LT1634AIS8-4.096#TRPBF, LT1460ACS8-4.096#TRPBF demands higher supply headroom and draws 4× more current, while REF43FH4096IDR achieves superior drift and accuracy at the expense of 4× higher operating current - making LT1634AIS8-4.096#TRPBF optimal for industrial portable equipment balancing precision, power, and cost.
Availability
LT1634AIS8-4.096#TRPBF is available at Aetrix Electronics and suitable for portable meters, precision regulators, and A/D converters requiring stable component supply with guaranteed industrial temperature performance and long-term calibration integrity.
Supply support for LT1634AIS8-4.096#TRPBF 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 acquired Linear Technology in 2017 and maintains full product support, datasheet documentation, and manufacturing continuity for the LT1634 family.
The LT1634 product line was designed specifically for micropower, high-accuracy shunt voltage referencing in space-constrained, battery-operated, and industrial-grade instrumentation - emphasizing low drift, low noise, and robust thermal hysteresis performance.
FAQ
What is the minimum operating current for LT1634AIS8-4.096#TRPBF?
The LT1634AIS8-4.096#TRPBF requires a minimum operating current of 15µA to maintain regulation within specifications. Below this threshold, output voltage may deviate beyond the ±0.05% initial accuracy band. This value is confirmed in the 4.096V Electrical Characteristics table under "Minimum Operating Current" for LT1634A-grade devices at IR = 20µA test condition.
Is LT1634AIS8-4.096#TRPBF pin-compatible with other LT1634 variants in SO-8?
Yes - all LT1634 SO-8 variants (including LT1634ACS8-4.096#TRPBF and LT1634BIS8-4.096#TRPBF) share identical pinout: Pin 4 = GND, Pin 5 = VOUT, and Pins 1–3/6–8 = DNC/NC. However, electrical specs differ: LT1634AIS8-4.096#TRPBF guarantees ±0.05% accuracy and 10ppm/°C drift over –40°C to +85°C, unlike B-grade or commercial-grade versions.
Can LT1634AIS8-4.096#TRPBF drive capacitive loads?
Yes - the LT1634AIS8-4.096#TRPBF is stable with capacitive loads up to at least 0.1µF, as demonstrated in typical application circuits (e.g., TA03 and TA04). No output compensation capacitor is required, and stability is maintained even with zero output capacitance, simplifying design in noise-sensitive applications.
What is the low-frequency noise specification for LT1634AIS8-4.096#TRPBF?
The LT1634AIS8-4.096#TRPBF exhibits 30µVP-P low-frequency noise over the 0.1Hz to 10Hz bandwidth at 20µA operating current. This value is explicitly listed in the "4.096V Electrical characteristics" table under "Low Frequency Noise (Note 6)" and is critical for minimizing uncertainty in high-resolution DC measurements.
Does LT1634AIS8-4.096#TRPBF require special PCB layout considerations?
Yes - because it is a two-terminal shunt reference, LT1634AIS8-4.096#TRPBF requires careful grounding: Pin 4 (GND) must connect to a low-impedance, dedicated ground plane with minimal trace length. Avoid routing noisy digital signals near VOUT or GND pins. Also, leave Pins 1–3 and 6–8 unconnected - no traces or vias - to prevent leakage paths that degrade accuracy.
LT1634AIS8-4.096#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 30 mA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 10ppm/°C
- Noise - 0.1Hz to 10Hz:
- 30µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 15 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1634AIS8-4.096#TRPBF FAQ
1.How can I place an order for LT1634AIS8-4.096#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1634AIS8-4.096#TRPBF 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 LT1634AIS8-4.096#TRPBF reliable?
The price and inventory of LT1634AIS8-4.096#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1634AIS8-4.096#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1634AIS8-4.096#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1634AIS8-4.096#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1634AIS8-4.096#TRPBF?
LT1634AIS8-4.096#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1634AIS8-4.096#TRPBF 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 LT1634AIS8-4.096#TRPBF?
For technical support, including LT1634AIS8-4.096#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1634AIS8-4.096#TRPBF requirements.
6.How does Aetrix verify that LT1634AIS8-4.096#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1634AIS8-4.096#TRPBF 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 LT1634AIS8-4.096#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1634AIS8-4.096#TRPBF?
All LT1634AIS8-4.096#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1634AIS8-4.096#TRPBF, 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 LT1634AIS8-4.096#TRPBF part is unused and in its original packaging.
Return procedure for LT1634AIS8-4.096#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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