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Analog Devices Inc. LT1790BCS6-4.096#TRMPBF
- Part No.:
- LT1790BCS6-4.096#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT1790BCS6-4.096#TRMPBF.pdf
- Description:
- IC VREF SERIES 0.1% TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,801
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Product details
Overview
LT1790BCS6-4.096#TRMPBF from Analog Devices (formerly Linear Technology) is a micropower, low-dropout series voltage reference IC in TSOT-23-6 package, delivering 4.096V output with ±0.1% initial accuracy, 25ppm/°C max temperature coefficient, and 60µA max supply current. It operates from 4.6V to 18V input and supports both sourcing and sinking up to 5mA, making it ideal for precision ADC/DAC biasing in battery-powered data acquisition systems.
For engineers reviewing the LT1790BCS6-4.096#TRMPBF datasheet, LT1790BCS6-4.096#TRMPBF pinout, LT1790BCS6-4.096#TRMPBF application, or LT1790BCS6-4.096#TRMPBF equivalent, key selection criteria include guaranteed operation from –40°C to 125°C, low thermal hysteresis (40ppm), 50mV dropout at zero load, and compatibility with 1µF output capacitance for stability in portable instrumentation designs.
Technical Context
The LT1790BCS6-4.096#TRMPBF uses curvature-compensated bandgap architecture with post-package trimming of thin-film resistors to achieve tight initial accuracy and low drift. Its internal design enables bidirectional current capability-sourcing up to 5mA and sinking up to 3mA-allowing use as either a positive or negative reference without performance degradation.
It features guaranteed functional operation from –40°C to 125°C, with output voltage shift limited to <0.25% above nominal at 125°C. Line regulation is specified at 50–220 ppm/V over 4.6V–18V input range, and load regulation is 80–250 ppm/mA for sourcing and 70–300 ppm/mA for sinking, reflecting robustness against supply and load transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.1% (±4.1mV) - ensures direct match to 12-bit full-scale ADC reference without scaling. |
| Temp Coefficient | 25ppm/°C max - limits drift to ±208ppm (±0.85mV) over –40°C to 85°C industrial range. |
| Supply Current | 60µA max - enables >10-year battery life in 10µA-sleep IoT sensor nodes. |
| Dropout Voltage | 50mV at 0mA load - allows operation with only 4.146V input, critical for single-cell Li-ion or coin-cell systems. |
| Operating Temp | –40°C to 125°C - qualified for under-hood automotive and industrial control environments. |
| Output Noise | 60µVP-P (0.1–10Hz) - avoids quantization noise floor elevation in 16-bit+ SAR ADC applications. |
| Hysteresis | 40ppm (–40°C to 85°C) - minimizes calibration error after thermal cycling in handheld test equipment. |
Pinout & Package
LT1790BCS6-4.096#TRMPBF is housed in a 6-lead Plastic TSOT-23 package (1mm height), marked "LTQB", with pin 1 identified by a dot. The package supports reflow soldering per JEDEC J-STD-020 and has θJA = 230°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Input supply connection; must be ≥4.146V for regulation; accepts up to 20V absolute max. |
| 2 | GND | Analog ground reference; requires low-impedance PCB plane tie to minimize noise coupling. |
| 3 | DNC | No-connect terminal; must remain unconnected per datasheet to avoid performance degradation. |
| 4 | GND | Second ground pin; improves thermal dissipation and reduces ground bounce in high-speed sampling. |
| 5 | DNC | No-connect terminal; electrically isolated; no trace or pad should connect to this pin. |
| 6 | VOUT | Regulated 4.096V output; stable with 1µF ceramic capacitor; drives 5mA source / 3mA sink loads. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional current capability | Sources 5mA / sinks 3mA - enables single-part solution for ±4.096V references using external op-amp inversion. |
| Curvature-compensated bandgap | 25ppm/°C max TC - achieves near-zero parabolic drift across full temperature range without external compensation. |
| Post-package trimming | ±0.1% initial accuracy - eliminates need for system-level calibration in production test fixtures. |
| Low thermal hysteresis | 40ppm over –40°C to 85°C - maintains repeatability in field-deployed portable instruments undergoing ambient cycling. |
| Wide input range | 4.6V to 18V - supports direct connection to unregulated 5V rails, 12V industrial buses, or buck converter outputs. |
Applications
| Handheld Instruments | Negative Voltage References |
|---|---|
Use Scenario: Portable multimeter with 16-bit sigma-delta ADC requiring stable reference during battery discharge from 4.2V to 3.0V. IC Role / Device Role / Timing Role: Primary 4.096V reference for ADC conversion and DAC output scaling. Use Value: 50mV dropout enables regulation down to 4.146V input, extending usable battery life by >15% versus higher-dropout alternatives. | Use Scenario: Industrial analog output module generating –4.096V for bipolar signal conditioning. IC Role / Device Role / Timing Role: Sinking-mode negative reference with matched accuracy and drift to its positive counterpart. Use Value: Eliminates need for separate negative reference IC or resistor network, reducing BOM count and layout area by 30%. |
| Industrial Control Systems | Data Acquisition Systems |
Use Scenario: PLC analog input card operating in –40°C to 85°C ambient with 0.1% total measurement uncertainty budget. IC Role / Device Role / Timing Role: Precision reference for multiplexed 12-bit ADC front-end with cold-junction compensation. Use Value: 40ppm hysteresis and 25ppm/°C TC ensure reference contribution stays below 0.05% of full scale across thermal cycles. | Use Scenario: Battery-powered environmental sensor node logging temperature/humidity with 14-bit ADC. IC Role / Device Role / Timing Role: Low-power reference enabling <10µA sleep current while maintaining fast wake-up (<700µs turn-on time). Use Value: 60µA max supply current and 700µs turn-on allow 1-second sampling intervals with >5-year CR2032 battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3040AIDBZR | 4.096V, ±0.2% initial accuracy, 50ppm/°C TC, 50µA supply current, SOT-23-3 package | Higher drift and lower accuracy; no sink capability; smaller footprint but single-ground pin | Acceptable where cost is primary constraint and 0.2% system tolerance permits; not suitable for bidirectional reference use. |
| ADR3440ARJZ-R7 | 4.096V, ±0.1% initial accuracy, 10ppm/°C TC, 120µA supply current, SOT-23-5 package | Lower drift but double supply current; no sink capability; requires external decoupling for stability | Preferred when ultra-low drift dominates design; avoid in battery-critical apps due to 2× current draw vs LT1790BCS6-4.096#TRMPBF. |
Compared with REF3040AIDBZR and ADR3440ARJZ-R7, the LT1790BCS6-4.096#TRMPBF uniquely combines ±0.1% accuracy, 25ppm/°C TC, bidirectional operation, and 60µA supply current in a 6-pin TSOT-23-enabling compact, low-power, dual-polarity reference designs unachievable with either alternative alone.
Availability
LT1790BCS6-4.096#TRMPBF is available at Aetrix Electronics and suitable for handheld instruments, industrial control systems, data acquisition systems, and battery-operated equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT1790BCS6-4.096#TRMPBF 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, formed through the acquisition of Linear Technology in 2017.
The LT1790BCS6-4.096#TRMPBF belongs to ADI's precision voltage reference product line, engineered specifically for applications demanding low power, low drift, and high accuracy in space-constrained, battery-sensitive, or thermally demanding environments.
FAQ
What is the maximum input voltage rating for the LT1790BCS6-4.096#TRMPBF?
The LT1790BCS6-4.096#TRMPBF has an absolute maximum input voltage rating of 20V, as specified in the Absolute Maximum Ratings table. Operation above this level risks permanent damage. For reliable regulation, VIN must be ≥4.6V (minimum operating voltage) and ≤18V (recommended maximum per electrical characteristics).
Can the LT1790BCS6-4.096#TRMPBF be used as a negative voltage reference?
Yes, the LT1790BCS6-4.096#TRMPBF can operate as a negative voltage reference by connecting VOUT to system ground and sinking current into the VIN pin. In this configuration, it delivers –4.096V with identical ±0.1% accuracy and 25ppm/°C temperature coefficient as in positive mode, as confirmed in the 4.096V Electrical Characteristics section.
What is the typical turn-on time for the LT1790BCS6-4.096#TRMPBF?
The typical turn-on time for the LT1790BCS6-4.096#TRMPBF is 700µs when driving a 1µF load capacitor, as documented in the 4.096V Electrical Characteristics table. This value applies across the full –40°C to 85°C temperature range and supports fast wake-up in duty-cycled data acquisition systems.
Does the LT1790BCS6-4.096#TRMPBF require an external capacitor for stability?
Yes, the LT1790BCS6-4.096#TRMPBF requires a minimum 1µF ceramic capacitor at the VOUT pin for stability, as specified in all voltage-option characteristic tables (e.g., "CL = 1µF and VIN = 4.6V"). Omitting this capacitor may cause oscillation or degraded load regulation, particularly under dynamic load conditions.
What is the thermal hysteresis specification for the LT1790BCS6-4.096#TRMPBF?
The LT1790BCS6-4.096#TRMPBF exhibits 40ppm typical thermal hysteresis over the –40°C to 85°C temperature range, as stated in the Features section and confirmed in Note 10. This represents the maximum reversible output voltage shift after cycling between temperature extremes and returning to 25°C, critical for repeatable calibration in field instruments.
LT1790BCS6-4.096#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- 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:
- 5 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 25ppm/°C
- Noise - 0.1Hz to 10Hz:
- 60µVp-p
- Noise - 10Hz to 10kHz:
- 89µVrms
- Voltage - Input:
- 4.6V ~ 18V
- Current - Supply:
- 80µA
- Current - Cathode:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LT1790BCS6-4.096#TRMPBF FAQ
1.How can I place an order for LT1790BCS6-4.096#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1790BCS6-4.096#TRMPBF 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 LT1790BCS6-4.096#TRMPBF reliable?
The price and inventory of LT1790BCS6-4.096#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1790BCS6-4.096#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT1790BCS6-4.096#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1790BCS6-4.096#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1790BCS6-4.096#TRMPBF?
LT1790BCS6-4.096#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1790BCS6-4.096#TRMPBF 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 LT1790BCS6-4.096#TRMPBF?
For technical support, including LT1790BCS6-4.096#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1790BCS6-4.096#TRMPBF requirements.
6.How does Aetrix verify that LT1790BCS6-4.096#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT1790BCS6-4.096#TRMPBF 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 LT1790BCS6-4.096#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT1790BCS6-4.096#TRMPBF?
All LT1790BCS6-4.096#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1790BCS6-4.096#TRMPBF, 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 LT1790BCS6-4.096#TRMPBF part is unused and in its original packaging.
Return procedure for LT1790BCS6-4.096#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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