My Inquiry
My Account
Analog Devices Inc. LT6658AHDE-1.2#TRPBF
- Part No.:
- LT6658AHDE-1.2#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LT6658AHDE-1.2#TRPBF.pdf
- Description:
- IC VREF SERIES 6V 0.05% 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,445
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT6658AHDE-1.2#TRPBF from Analog Devices is a precision dual-output voltage reference and linear regulator (Refulator™) delivering 1.2V ±0.05% initial accuracy, 10ppm/°C max temperature drift, and separate 150mA/50mA outputs with Kelvin sensing. It drives high-resolution ADC/DAC references while powering microcontrollers in data acquisition and automotive control systems.
For engineers reviewing the LT6658AHDE-1.2#TRPBF datasheet, LT6658AHDE-1.2#TRPBF pinout, LT6658AHDE-1.2#TRPBF application, or LT6658AHDE-1.2#TRPBF equivalent, this page provides verified specifications, thermal-grade H-temperature operation (–40°C to 125°C), DFN package details, and real-world design context for precision analog supply and reference partitioning.
Technical Context
The LT6658AHDE-1.2#TRPBF integrates two independent buffered reference outputs sharing identical precision specs and tracking within 0.9µV/°C over temperature. Output 1 delivers up to 150mA source/20mA sink; Output 2 supports 50mA source/20mA sink - both stable with 1µF–50µF output capacitors and featuring separate VIN1/VIN2 supply pins for power optimization and isolation.
It employs a noise-reduction (NR) pin and BYPASS terminal to enable external filtering, achieving 0.8ppmP–P (0.1Hz–10Hz) output noise at 1.2V. AC PSRR reaches 96dB at 10kHz, and load regulation is specified at 0.25µV/mA for Output 1 sourcing, enabling high-accuracy, low-drift biasing under dynamic loading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.200V nominal, fixed - eliminates external resistor network complexity and associated drift/error sources. |
| Initial Accuracy | ±0.05% max - ensures ≤6mV absolute error at 1.2V, critical for 16-bit+ ADC/DAC reference calibration. |
| Temp Coefficient | 10ppm/°C max - contributes ≤1.5µV/°C drift over full –40°C to 125°C range, supporting wide-temperature industrial operation. |
| Output Current | Output 1: 150mA source / 20mA sink; Output 2: 50mA source / 20mA sink - enables simultaneous reference + logic supply without external regulators. |
| Noise (0.1–10Hz) | 0.8ppmP–P - equals 0.96µVP–P at 1.2V, suitable for 20-bit+ precision measurement front-ends. |
| Load Regulation | 0.25µV/mA (Output 1 sourcing) - maintains <38µV shift across full 150mA load, preserving reference integrity under varying loads. |
| Operating Temp | –40°C to 125°C junction - qualified for under-hood automotive, industrial PLC, and high-reliability embedded applications. |
Pinout & Package
LT6658AHDE-1.2#TRPBF uses a 16-lead (4mm × 3mm) plastic DFN package with exposed pad (Pin 17 = GND), optimized for thermal performance (θJA = 43°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 2, 6, 17) | Ground reference and thermal path | Multiple GND pins reduce ground impedance; exposed pad must be soldered for thermal management and noise immunity. |
| VOUT1_F / VOUT2_F | Main output force terminals | Kelvin-sensed outputs - connect directly to load for precision regulation; sensitive to PCB trace resistance. |
| VOUT1_S / VOUT2_S | Sense return terminals | Feedback path for internal amplifier - route separately from force traces to avoid IR drop errors. |
| VIN1 / VIN2 | Independent input supplies | Enable power domain isolation: VIN1 powers Output 1 buffer; VIN2 powers Output 2 buffer - reduces crosstalk and improves PSRR. |
| BYPASS | Noise reduction filter node | Connects to external capacitor to suppress high-frequency noise; critical for achieving sub-1ppmP–P low-frequency noise. |
| NR | Noise reduction control | Accepts external RC network to band-limit output noise - configurable for system-specific spectral requirements. |
| OD | Output disable logic input | Active-low digital control: pulls outputs to ~400mV when asserted - enables power sequencing and standby mode. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent Refulator™ outputs | Each output combines reference-grade accuracy (±0.05%) and regulator-level drive (150mA/50mA), eliminating need for discrete reference + LDO combos. |
| Kelvin sense architecture | 0.1ppm/mA typical load regulation - compensates for PCB trace resistance, ensuring stable 1.2V at point-of-load even with long interconnects. |
| Separate VIN1/VIN2 supplies | Reduces inter-output coupling and enables independent power domain control - improves channel-to-channel isolation to >120dB at 1kHz. |
| H-grade temperature rating | –40°C to 125°C operation with 10ppm/°C drift - validated for automotive engine control units and industrial motor drives without derating. |
| Thermal shutdown & short-circuit protection | Prevents damage during overload or layout faults - allows safe operation in unattended systems without external current limiting. |
Applications
| High-Resolution Data Acquisition | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Simultaneous sampling of multiple sensor channels (e.g., pressure, temperature, knock) using a 24-bit delta-sigma ADC. IC Role / Device Role / Timing Role: LT6658AHDE-1.2#TRPBF supplies clean 1.2V reference to ADC's REF+ pin and powers its internal digital core and SPI interface. Use Value: 0.8ppmP–P noise and 10ppm/°C drift ensure <0.001% gain error stability over temperature, enabling direct sensor-to-digital conversion without recalibration. |
Use Scenario: Fuel injection timing and cylinder pressure monitoring in gasoline direct injection (GDI) systems. IC Role / Device Role / Timing Role: LT6658AHDE-1.2#TRPBF provides isolated 1.2V reference for crankshaft/camshaft position ADCs and powers MCU I/O banks handling sensor inputs. Use Value: Dual-output tracking (<0.9µV/°C) ensures matched reference and supply drift, minimizing timing skew between analog sensing and digital control loops across –40°C to 125°C. |
| Industrial Process Controller | FPGA-Based Test Equipment |
Use Scenario: 4–20mA loop-powered transmitter with integrated signal conditioning and HART communication. IC Role / Device Role / Timing Role: LT6658AHDE-1.2#TRPBF delivers precise 1.2V reference for DAC-based current loop control and powers analog front-end op-amps and HART modem. Use Value: 150mA Output 1 handles full loop drive current; 50mA Output 2 powers low-noise signal chain - all from single IC with no external LDOs. |
Use Scenario: High-speed automated test equipment (ATE) requiring synchronized multi-channel analog stimulus and capture. IC Role / Device Role / Timing Role: LT6658AHDE-1.2#TRPBF supplies matched 1.2V references to parallel 16-bit DACs and powers FPGA I/O banks driving analog switches and multiplexers. Use Value: Output tracking and low 0.25µV/mA load regulation maintain <1LSB error across full DAC output range, even during fast switching transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output precision reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT6658AHMSE-1.2#TRPBF | Same electrical specs but in 16-lead MSOP package (θJA = 35°C/W); no exposed thermal pad. | Preferred for prototyping or lower-power designs where thermal dissipation <1W; less suitable for continuous 150mA output in compact layouts. | Select when board space allows larger MSOP footprint and thermal margin is sufficient without exposed pad soldering. |
| REF7012SHKJ | Single-output 1.2V ultra-low-noise reference (0.25ppmP–P), no regulator output; 0.5ppm/°C drift; SOIC-8 package. | Requires external LDO for digital supply; lacks dual-output tracking and Kelvin sensing - unsuitable for simultaneous reference + supply use cases. | Choose only if reference-only function is needed and lowest possible noise dominates over integration and drive capability. |
Compared with LT6658AHMSE-1.2#TRPBF, the LT6658AHDE-1.2#TRPBF offers superior thermal performance via its exposed DFN pad, enabling sustained 150mA output in high-density layouts; versus REF7012SHKJ, it delivers integrated dual-output functionality with tracking and load drive - reducing BOM count and layout complexity by eliminating discrete regulators.
Availability
LT6658AHDE-1.2#TRPBF is available at Aetrix Electronics and suitable for high-precision data acquisition, automotive ECU, and industrial process controller applications requiring stable component supply across extended temperature ranges.
Supply support for LT6658AHDE-1.2#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, automotive, communications, and healthcare markets.
The LT6658 family was designed to solve precision analog supply partitioning challenges - merging reference-grade accuracy with regulator-level drive in a single IC to simplify high-resolution measurement systems.
FAQ
What is the maximum load current supported by each output of the LT6658AHDE-1.2#TRPBF?
The LT6658AHDE-1.2#TRPBF supports 150mA source / 20mA sink on Output 1 and 50mA source / 20mA sink on Output 2. These ratings apply across the full –40°C to 125°C operating range and include thermal shutdown protection to prevent damage during overload conditions.
How does the Kelvin sensing configuration improve accuracy in the LT6658AHDE-1.2#TRPBF?
The LT6658AHDE-1.2#TRPBF uses separate force (VOUT1_F/VOUT2_F) and sense (VOUT1_S/VOUT2_S) terminals to close the feedback loop at the load. This eliminates voltage drop errors in PCB traces or connectors, enabling 0.25µV/mA load regulation - critical for maintaining 1.2V accuracy under dynamic load changes.
Can the LT6658AHDE-1.2#TRPBF be used in automotive under-hood applications?
Yes - the LT6658AHDE-1.2#TRPBF is rated for –40°C to 125°C junction temperature and qualified per AEC-Q100 stress test standards for automotive use. Its 10ppm/°C drift, thermal shutdown, and robust PSRR make it suitable for engine control, transmission, and battery management subsystems.
What is the purpose of the NR and BYPASS pins on the LT6658AHDE-1.2#TRPBF?
The NR (Noise Reduction) pin accepts an external RC network to configure low-pass filtering of the internal reference, while the BYPASS pin connects to a capacitor that shunts high-frequency noise on the internal bandgap. Together, they enable configurable noise shaping - achieving 0.8ppmP–P (0.1–10Hz) at 1.2V.
Does the LT6658AHDE-1.2#TRPBF require external resistors to set its output voltage?
No - the LT6658AHDE-1.2#TRPBF is a fixed 1.200V output device. Unlike adjustable variants in the LT6658 family, it requires no external resistors, eliminating associated tolerance, temperature drift, and layout sensitivity - simplifying design and improving long-term stability.
LT6658AHDE-1.2#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 16-WFDFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series, Dual
- Output Type:
- Adjustable (Fixed)
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- 6 V
- Current - Output:
- 150 mA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 10ppm/°C
- Noise - 0.1Hz to 10Hz:
- 0.8ppmp-p
- Noise - 10Hz to 10kHz:
- 2ppmrms
- Voltage - Input:
- 3.5V ~ 36V
- Current - Supply:
- 3.2mA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DFN (4x3)
LT6658AHDE-1.2#TRPBF FAQ
1.How can I place an order for LT6658AHDE-1.2#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6658AHDE-1.2#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 LT6658AHDE-1.2#TRPBF reliable?
The price and inventory of LT6658AHDE-1.2#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6658AHDE-1.2#TRPBF is usually 5 days.
3.What payment methods are accepted for LT6658AHDE-1.2#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6658AHDE-1.2#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6658AHDE-1.2#TRPBF?
LT6658AHDE-1.2#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6658AHDE-1.2#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 LT6658AHDE-1.2#TRPBF?
For technical support, including LT6658AHDE-1.2#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6658AHDE-1.2#TRPBF requirements.
6.How does Aetrix verify that LT6658AHDE-1.2#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT6658AHDE-1.2#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 LT6658AHDE-1.2#TRPBF meets industry standards.
7.What is the process for return or replacement of LT6658AHDE-1.2#TRPBF?
All LT6658AHDE-1.2#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6658AHDE-1.2#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 LT6658AHDE-1.2#TRPBF part is unused and in its original packaging.
Return procedure for LT6658AHDE-1.2#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT6658AHDE-1.2#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…
