My Inquiry
My Account
Analog Devices Inc. LT1461BIS8-4#TRPBF
- Part No.:
- LT1461BIS8-4#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1461BIS8-4#TRPBF.pdf
- Description:
- IC VREF SERIES 0.06% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,161
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT1461BIS8-4#TRPBF from Analog Devices is a precision 4.096V low-dropout series voltage reference with ±0.06% initial accuracy, 7ppm/°C max temperature coefficient, and 35µA typical supply current. It delivers up to 50mA output current with <300mV dropout at full load and features shutdown control, thermal limiting, and guaranteed operation from –40°C to +85°C - ideal for high-resolution data acquisition in portable instrumentation.
For engineers reviewing the LT1461BIS8-4#TRPBF datasheet, LT1461BIS8-4#TRPBF pinout, LT1461BIS8-4#TRPBF application, or LT1461BIS8-4#TRPBF equivalent, key selection criteria include its 4.096V output (optimized for 12-bit ADCs), SO-8 package compatibility, industrial temperature range, and micropower performance under dynamic load conditions.
Technical Context
The LT1461BIS8-4#TRPBF uses curvature-compensated bandgap architecture with trimmed thin-film resistors to achieve tight initial accuracy and low drift. Its internal shutdown circuit enables full-load current switching with <200µs wake-up time and draws ≤35µA in shutdown mode.
Designed as a series reference, it maintains regulation with VIN ≥ VOUT + 0.3V and supports output capacitance from 1µF to ≥2µF. Load regulation is specified at 12ppm/mA (typical), and line regulation is ≤8ppm/V across 0.5V to 20V input range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.06% (±2.46mV) - matches standard 12-bit ADC full-scale reference point |
| Tempco | 7ppm/°C max - contributes ≤0.59mV error over –40°C to +85°C ambient |
| Supply Current | 35µA typ / 50µA max - enables >1-year battery life in 10µA sleep-cycle systems |
| Dropout Voltage | ≤300mV at 50mA - allows operation from single-cell Li-ion (3.0V min) with margin |
| Output Drive | 50mA min sourcing - supports direct driving of op-amp bias networks or DAC references |
| Shutdown Current | ≤35µA - reduces system standby power without external FET switching |
| Thermal Hysteresis | 75ppm over –40°C to +85°C - quantifiable post-temperature-cycling error in field-deployed units |
Pinout & Package
LT1461BIS8-4#TRPBF is housed in an 8-lead plastic SOIC (SO-8) package with standard JEDEC MS-012AC footprint, 1.27mm pitch, and θJA = 190°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No Connect | Internally unused; must remain unconnected per datasheet |
| 2 (VIN) | Input Supply | Accepts 4.396V–20V; dropout headroom defined relative to VOUT |
| 3 (SHDN) | Shutdown Control | Active-low logic input; <0.5V = shutdown, >2.4V = active |
| 4 (GND) | Analog Ground | Reference return path; requires low-impedance connection to system ground plane |
| 5 (NC) | No Connect | Internally unused; must remain unconnected |
| 6 (VOUT) | Reference Output | Stable 4.096V source; requires ≥1µF ceramic output capacitor for stability |
| 7 (NC) | No Connect | Internally unused; must remain unconnected |
| 8 (NC) | No Connect | Internally unused; must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout Operation | Enables use with input voltages as low as 4.396V while maintaining full 4.096V accuracy and 50mA drive |
| Shutdown Functionality | Reduces supply current to ≤35µA and disables output without requiring external MOSFET or power sequencing |
| Industrial Temperature Range | Guaranteed parametric performance from –40°C to +85°C - suitable for non-automotive embedded industrial environments |
| High Output Current | Delivers 50mA continuously - eliminates need for external buffer amplifiers in precision regulator designs |
| Thermal Shutdown Protection | Activates at ~150°C junction temperature - prevents permanent damage during overload or poor heatsinking |
Applications
| Portable Data Loggers | Precision Industrial Sensors |
|---|---|
Use Scenario: Battery-powered environmental monitoring node sampling temperature, humidity, and pressure at 10Hz using 12-bit SAR ADCs. IC Role / Device Role / Timing Role: Primary voltage reference for ADC conversion and sensor excitation circuitry. Use Value: 4.096V output enables full 0–4095 code utilization; 7ppm/°C tempco limits measurement drift to <0.3 LSB over operating range. | Use Scenario: 4–20mA loop-powered transmitter with local analog signal conditioning and digital diagnostics. IC Role / Device Role / Timing Role: Stable reference for current-loop DAC and analog front-end gain calibration. Use Value: 50mA output drive powers internal op-amps and DACs directly; shutdown mode cuts quiescent current during diagnostic sleep cycles. |
| Medical Instrumentation | Test & Measurement Equipment |
Use Scenario: Handheld ECG device with low-noise analog front-end and 16-bit delta-sigma ADC. IC Role / Device Role / Timing Role: Reference for ADC and programmable gain amplifier (PGA) offset calibration. Use Value: 35µA supply current extends battery life; low thermal hysteresis (<75ppm) ensures repeatable calibration after field temperature excursions. | Use Scenario: Benchtop multimeter with auto-ranging and 5½-digit resolution requiring stable internal references. IC Role / Device Role / Timing Role: Secondary reference for self-calibration routines and analog subsystem trimming. Use Value: ±0.06% initial accuracy reduces factory calibration time; SO-8 package supports automated optical inspection and reflow compatibility. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF43FH4096IDR | 4.096V, ±0.05% initial accuracy, 3ppm/°C max, 100µA supply current, SO-8 | Higher accuracy and lower drift but 3× higher supply current; no shutdown function | Select when ultra-low drift dominates over power budget and shutdown is unnecessary |
| ADR444BRZ | 4.096V, ±0.04% initial accuracy, 3ppm/°C max, 750µA supply current, SO-8 | Superior long-term stability and noise performance, but 20× higher quiescent current and no shutdown | Select for metrology-grade applications where power is secondary to absolute precision and stability |
Compared with REF43FH4096IDR and ADR444BRZ, the LT1461BIS8-4#TRPBF trades minor accuracy and drift degradation for micropower operation and integrated shutdown - making it optimal for battery-constrained, industrial-grade systems requiring moderate precision and active power management.
Availability
LT1461BIS8-4#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor transmitters, and medical diagnostics requiring stable component supply with industrial temperature range and low-power operation.
Supply support for LT1461BIS8-4#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, communications, automotive, and consumer markets.
The LT1461 family was designed for precision, low-power voltage referencing in portable and embedded systems - emphasizing micropower consumption, robust thermal behavior, and ease of integration without external support components.
FAQ
What is the maximum input voltage for LT1461BIS8-4#TRPBF?
The absolute maximum input voltage for LT1461BIS8-4#TRPBF is 20V, as specified in the Absolute Maximum Ratings table. For reliable operation, VIN should be maintained between (VOUT + 0.3V) = 4.396V and 20V. Exceeding 20V risks permanent damage, and operation below 4.396V will cause dropout and loss of regulation. The LT1461BIS8-4#TRPBF maintains full specification compliance across this range when loaded up to 50mA.
Does LT1461BIS8-4#TRPBF require external capacitors?
Yes, LT1461BIS8-4#TRPBF requires both input and output capacitors for stability. A minimum 1µF ceramic capacitor is required on VOUT; 2µF is recommended for loads ≥1mA. An input bypass capacitor (≥1µF) is also required on VIN - shared supply bypass caps within 2 inches may suffice if adequately sized. Omitting either capacitor risks oscillation or degraded transient response, as confirmed in the Applications Information section of the LT1461BIS8-4#TRPBF datasheet.
How does the shutdown feature work on LT1461BIS8-4#TRPBF?
The shutdown pin (Pin 3) of LT1461BIS8-4#TRPBF is active-low: applying <0.5V places the device in shutdown mode, reducing supply current to ≤35µA and disabling the output. Applying >2.4V enables normal operation. The LT1461BIS8-4#TRPBF wakes up in approximately 200µs when SHDN transitions high. This feature allows system-level power cycling without external switches, and is validated across the full –40°C to +85°C temperature range.
What is the thermal hysteresis specification for LT1461BIS8-4#TRPBF?
LT1461BIS8-4#TRPBF exhibits 75ppm maximum thermal hysteresis over the –40°C to +85°C temperature range, as documented in the Electrical Characteristics table. This value represents the worst-case output voltage shift observed after cycling between temperature extremes and returning to 25°C - a critical parameter for applications requiring repeatable calibration after field thermal exposure. The LT1461BIS8-4#TRPBF hysteresis is measured on soldered PC board assemblies, reflecting real-world mechanical stress effects.
Can LT1461BIS8-4#TRPBF drive a 50mA load continuously?
Yes, LT1461BIS8-4#TRPBF is rated for continuous 50mA sourcing current, as confirmed in the Features list and Electrical Characteristics table. However, power dissipation must be managed: at 50mA and 300mV dropout, it dissipates 15mW - well within SO-8 thermal limits. At higher VIN–VOUT differentials, junction temperature must be monitored; thermal shutdown activates near 150°C. The LT1461BIS8-4#TRPBF maintains regulation and specified accuracy under these conditions when PCB layout follows recommended thermal guidelines.
LT1461BIS8-4#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:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 100 mA
- Tolerance:
- ±0.06%
- Temperature Coefficient:
- 7ppm/°C
- Noise - 0.1Hz to 10Hz:
- 8ppmp-p
- Noise - 10Hz to 10kHz:
- 9.6ppmrms
- Voltage - Input:
- 4.596V ~ 20V
- Current - Supply:
- 70µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1461BIS8-4#TRPBF FAQ
1.How can I place an order for LT1461BIS8-4#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1461BIS8-4#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 LT1461BIS8-4#TRPBF reliable?
The price and inventory of LT1461BIS8-4#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1461BIS8-4#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1461BIS8-4#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1461BIS8-4#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1461BIS8-4#TRPBF?
LT1461BIS8-4#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1461BIS8-4#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 LT1461BIS8-4#TRPBF?
For technical support, including LT1461BIS8-4#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1461BIS8-4#TRPBF requirements.
6.How does Aetrix verify that LT1461BIS8-4#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1461BIS8-4#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 LT1461BIS8-4#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1461BIS8-4#TRPBF?
All LT1461BIS8-4#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1461BIS8-4#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 LT1461BIS8-4#TRPBF part is unused and in its original packaging.
Return procedure for LT1461BIS8-4#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1461BIS8-4#TRPBF Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
