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Analog Devices Inc. LT6658AHDE-5#TRPBF
- Part No.:
- LT6658AHDE-5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LT6658AHDE-5#TRPBF.pdf
- Description:
- IC VREF SERIES 6V 0.05% 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,439
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Product details
Overview
LT6658AHDE-5#TRPBF from Analog Devices is a precision dual-output voltage reference and regulator (Refulator™) delivering 5.000V ±0.05% initial accuracy and 10ppm/°C max temperature drift across –40°C to 125°C. Output 1 supplies up to 150mA with 0.25µV/mA load regulation; Output 2 supplies up to 50mA. It powers high-resolution ADC/DAC reference inputs and microcontrollers in automotive control systems.
For engineers reviewing the LT6658AHDE-5#TRPBF datasheet, LT6658AHDE-5#TRPBF pinout, LT6658AHDE-5#TRPBF application, or LT6658AHDE-5#TRPBF equivalent, key selection criteria include dual-output tracking performance, Kelvin-sense capability, low 1.7ppmP–P (0.1Hz–10Hz) noise, and H-grade extended temperature operation in the 4mm × 3mm DFN package.
Technical Context
The LT6658AHDE-5#TRPBF integrates two independent, precision-regulated outputs sharing identical voltage accuracy and thermal tracking characteristics. Each output features separate supply pins (VIN1/VIN2), enabling power domain isolation and optimized PSRR-96dB at 10kHz for Output 1 and 107dB ripple rejection at 120Hz.
It employs Kelvin sensing (VOUT1_S/VOUT2_S) for sub-ppm/mA load regulation and includes a dedicated noise reduction (NR) pin and bypass (BYPASS) pin to minimize integrated output noise. Thermal shutdown and short-circuit protection are built-in.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V nominal, fixed; stable under 150mA/50mA sourcing loads |
| Initial Accuracy | ±0.05% max - enables 16-bit+ system accuracy without calibration |
| Temp Coefficient | 10ppm/°C max - ensures ≤0.5mV drift over –40°C to 125°C range |
| Load Regulation | 0.25µV/mA (Output 1) - maintains reference stability under dynamic load steps |
| Output Noise | 1.7ppmP–P (0.1Hz–10Hz) - supports ultra-low-noise 24-bit delta-sigma ADCs |
| PSRR | 96dB at 10kHz - rejects high-frequency switching noise from adjacent DC/DC converters |
| Operating Temp | –40°C to 125°C junction - qualified for under-hood automotive and industrial environments |
Pinout & Package
LT6658AHDE-5#TRPBF is housed in a 16-lead (4mm × 3mm) plastic DFN package with exposed thermal pad (Pin 17 = GND). The package supports high-power dissipation (θJA = 43°C/W) and requires soldering of the exposed pad to PCB ground for thermal integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1,2,6,17) | Ground reference and thermal pad | Multiple GND pins reduce impedance; exposed pad must be soldered for thermal management |
| VOUT1_F / VOUT2_F | Main output force terminals | Deliver regulated 5V; connect to load; require ≥1µF output capacitance |
| VOUT1_S / VOUT2_S | Kelvin sense inputs | Enable remote sensing to cancel trace resistance error - critical for <0.1ppm/mA regulation |
| VIN1 / VIN2 | Independent input supplies | Allow separate power domains; improve PSRR and reduce crosstalk between outputs |
| VIN | Primary supply input | Must be ≥7.5V (for 5V output); powers internal bias circuitry and OD logic |
| OD | Output disable control | Active-low logic input; pulls outputs to high-impedance when asserted |
| BYPASS | Noise reduction filter node | Connects to 0.1µF capacitor to reduce broadband noise; improves RMS noise by ~3× |
| NR | Noise reduction filter node | Accepts 10µF capacitor to band-limit low-frequency noise; sets 0.1Hz–10Hz corner |
Key Features
| Feature | Design Value |
|---|---|
| Dual-output tracking | Output 1 and Output 2 track within 0.9µV/°C - eliminates differential drift in ratiometric systems |
| Kelvin-sense architecture | 0.1ppm/mA typical load regulation - maintains accuracy despite PCB trace resistance |
| Configurable noise filtering | Separate BYPASS and NR pins allow independent optimization of broadband and low-frequency noise |
| Independent supply rails | VIN1/VIN2 isolation reduces inter-output crosstalk to <–140dB - critical for mixed-signal SoC power |
| H-grade temperature range | –40°C to 125°C operation - meets AEC-Q100 Grade 1 requirements for automotive applications |
Applications
| Automotive Battery Monitoring | Industrial Data Acquisition |
|---|---|
Use Scenario: Real-time monitoring of 12V/48V battery pack cell voltages and state-of-charge in EV BMS. IC Role / Device Role / Timing Role: LT6658AHDE-5#TRPBF provides dual 5V references: one for 24-bit ADC front-end, one for MCU analog peripherals. Use Value: 10ppm/°C drift and 1.7ppmP–P noise ensure <±0.01% measurement accuracy across under-hood temperatures. | Use Scenario: High-precision sensor signal conditioning in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Supplies isolated 5V reference and auxiliary 5V supply for op-amps, ADC drivers, and microcontroller I/O. Use Value: Independent VIN1/VIN2 rails prevent digital switching noise from corrupting reference integrity during multi-channel sampling. |
| Laboratory Instrumentation | Aerospace Sensor Interface |
Use Scenario: Reference source in portable multimeters and calibration standards requiring metrology-grade stability. IC Role / Device Role / Timing Role: Dual 5V outputs power precision DACs (for output generation) and high-resolution SAR ADCs (for input measurement). Use Value: 0.05% initial accuracy and 120ppm/√kHr long-term drift meet ANSI C12.20 Class 0.1 metering standards. | Use Scenario: Signal chain biasing in radiation-tolerant satellite payload sensors operating in wide thermal orbits. IC Role / Device Role / Timing Role: Provides primary 5V reference for radiation-hardened ADCs and secondary 5V supply for FPGA configuration and interface logic. Use Value: H-grade operation and thermal hysteresis of only 45ppm enable repeatable measurements after extreme thermal cycling (–40°C ↔ 125°C). |
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 |
|---|---|---|---|
| LT6658BHDE-5#TRPBF | ±0.1% initial accuracy, 20ppm/°C tempco - relaxed precision grade | Suitable where cost sensitivity outweighs 16-bit+ resolution needs | Select when full A-grade specs are unnecessary and budget constraints apply |
| REF7050QDGNRQ1 | Single-output, 5V, ±0.025% initial accuracy, 2ppm/°C - higher precision but no dual output | Requires external LDO for auxiliary supply; lacks Kelvin sensing and tracking | Choose only if dual-output functionality is not required and tighter drift is mandatory |
Compared with LT6658BHDE-5#TRPBF, the LT6658AHDE-5#TRPBF delivers twice the initial accuracy and half the drift - essential for ratiometric ADC systems. Versus REF7050QDGNRQ1, it trades single-output precision for integrated dual-output functionality, Kelvin sensing, and output tracking - reducing BOM count and layout complexity in space-constrained designs.
Availability
LT6658AHDE-5#TRPBF is available at Aetrix Electronics and suitable for automotive battery monitoring, industrial data acquisition, and laboratory instrumentation requiring stable component supply across extended temperature ranges.
Supply support for LT6658AHDE-5#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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LT6658 family was designed specifically for high-accuracy, low-noise dual-rail reference and supply applications in demanding environments such as automotive, industrial, and test equipment.
FAQ
What is the maximum load current supported by each output of the LT6658AHDE-5#TRPBF?
The LT6658AHDE-5#TRPBF supports up to 150mA sourcing and 20mA sinking on Output 1 (VOUT1_F/S), and up to 50mA sourcing and 20mA sinking on Output 2 (VOUT2_F/S). These ratings are guaranteed across the full –40°C to 125°C operating range with proper thermal management via the exposed pad.
Does the LT6658AHDE-5#TRPBF require external resistors to set its output voltage?
No - the LT6658AHDE-5#TRPBF is a fixed 5.000V output device. Unlike adjustable variants in the LT6658 family, this part has no external resistor network; its output voltage is laser-trimmed at wafer level and does not require external components for basic operation.
How does the Kelvin sensing (VOUT1_S/VOUT2_S) improve accuracy in the LT6658AHDE-5#TRPBF?
The LT6658AHDE-5#TRPBF uses Kelvin sensing to eliminate voltage drop errors caused by PCB trace resistance. By routing sense lines directly to the load point, the internal amplifier regulates VOUT1_F/VOUT2_F to maintain precise 5.000V at the load - achieving 0.1ppm/mA typical load regulation, far superior to standard single-point regulation.
Can the LT6658AHDE-5#TRPBF operate with different input voltages on VIN1 and VIN2?
Yes - the LT6658AHDE-5#TRPBF allows independent supply voltages on VIN1 and VIN2. This feature isolates noise and ripple between the two output stages, improving PSRR and reducing crosstalk. However, VIN must still be applied and meet minimum requirements (≥7.5V for 5V output) to power internal circuitry and the OD logic.
What is the purpose of the NR and BYPASS pins on the LT6658AHDE-5#TRPBF?
The NR (Noise Reduction) pin accepts a 10µF capacitor to suppress low-frequency (<10Hz) noise, while the BYPASS pin accepts a 0.1µF capacitor to reduce mid-to-high-frequency noise. Together, they enable independent optimization of 0.1Hz–10Hz peak-to-peak noise (1.7ppmP–P) and broadband RMS noise - critical for high-resolution data converters powered by the LT6658AHDE-5#TRPBF.
LT6658AHDE-5#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):
- 5V
- Voltage - Output (Max):
- 6 V
- Current - Output:
- 150 mA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 10ppm/°C
- Noise - 0.1Hz to 10Hz:
- 2.2ppmp-p
- Noise - 10Hz to 10kHz:
- 2ppmrms
- Voltage - Input:
- 5.2V ~ 36V
- Current - Supply:
- 3mA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DFN (4x3)
LT6658AHDE-5#TRPBF FAQ
1.How can I place an order for LT6658AHDE-5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6658AHDE-5#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-5#TRPBF reliable?
The price and inventory of LT6658AHDE-5#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-5#TRPBF is usually 5 days.
3.What payment methods are accepted for LT6658AHDE-5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6658AHDE-5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6658AHDE-5#TRPBF?
LT6658AHDE-5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6658AHDE-5#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-5#TRPBF?
For technical support, including LT6658AHDE-5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6658AHDE-5#TRPBF requirements.
6.How does Aetrix verify that LT6658AHDE-5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT6658AHDE-5#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-5#TRPBF meets industry standards.
7.What is the process for return or replacement of LT6658AHDE-5#TRPBF?
All LT6658AHDE-5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6658AHDE-5#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-5#TRPBF part is unused and in its original packaging.
Return procedure for LT6658AHDE-5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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