LT6657BHMS8-2.5#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
LT6657BHMS8-2.5 is a precision 2.5 V buffered voltage reference IC from Analog Devices featuring 3 ppm/°C maximum temperature drift and ultra-low noise. Delivers 2.5 V ±0.1% initial accuracy with 50 mA output current capability for ADC and DAC reference applications. Available in 8-pin MSOP package for compact high-precision analog circuit designs.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LT6657BHMS8-2.5#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.4000(MOQ 19)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low temperature coefficient of 3 ppm/°C maximum, maintaining 2.5 V output stability across -40°C to 125°C
- Buffered output capable of sourcing and sinking 50 mA, directly driving ADC reference inputs without additional buffer stages
- Low output noise of 4 µVRMS (10 Hz to 10 kHz) for high-resolution ADC and DAC applications requiring clean reference voltage
- High initial accuracy of ±0.1% (±2.5 mV) at 2.5 V output voltage, reducing system calibration overhead
- Wide input supply range of 2.7 V to 13.2 V with reverse-input protection for versatile power supply compatibility
Applications
The LT6657BHMS8-2.5 is used as a precision 2.5 V reference in 16-bit and 18-bit ADC and DAC circuits where temperature drift above 3 ppm/°C would degrade measurement accuracy. Industrial data acquisition systems, precision instrumentation amplifiers, and strain-gauge bridge conditioners rely on its 50 mA buffered output to supply multiple parallel ADC reference inputs without droop. Its low noise floor of 4 µVRMS also makes it suitable for audio DAC reference rails and high-accuracy calibration equipment operating across the full -40°C to 125°C industrial temperature range.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1660 |
| YTEOL | 10 |
| Analog IC - Other Type | THREE TERMINAL VOLTAGE REFERENCE |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Voltage-Max | 2.5025V |
| Output Voltage-Min | 2.4975V |
| Output Voltage-Nom | 2.5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Supply Voltage-Max (Vsup) | 40V |
| Supply Voltage-Min (Vsup) | 3V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temp Coef of Voltage-Max | 3ppm/°C |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Trim/Adjustable Output | NO |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the temperature coefficient of the LT6657BHMS8-2.5 and why does it matter for precision ADCs?
The LT6657BHMS8-2.5 specifies a maximum temperature coefficient of 3 ppm/°C, meaning the 2.5 V output drifts no more than 7.5 µV per degree Celsius. For a 16-bit ADC with a 2.5 V reference, one LSB equals 38 µV, so the reference adds less than one-quarter LSB of error per 5°C change, preserving measurement accuracy in industrial temperature ranges from -40°C to 125°C.
How much output current can the LT6657BHMS8-2.5 source and is it sufficient to drive multiple ADC inputs?
The LT6657BHMS8-2.5 can source up to 50 mA from its buffered output, which is enough to simultaneously drive several high-speed ADC reference pins that each draw 5 mA to 10 mA. The buffered architecture maintains tight 2.5 V regulation under load transients, making it a better choice than unbuffered bandgap references in multi-channel data acquisition boards.
What supply voltage range does the LT6657BHMS8-2.5 accept and how does that affect system design?
The LT6657BHMS8-2.5 accepts input supply voltages from 2.7 V to 13.2 V, accommodating both 3.3 V and 5 V logic supply rails as well as unregulated 12 V automotive or industrial power buses. This wide input range eliminates the need for a separate pre-regulator in many 2.5 V reference designs, simplifying the overall analog power supply architecture.
How does the output noise of the LT6657BHMS8-2.5 compare to typical bandgap references in audio DAC designs?
The LT6657BHMS8-2.5 delivers output noise of 4 µVRMS from 10 Hz to 10 kHz, which is 3 to 5 times lower than a standard unbuffered bandgap reference in the same supply range. For a 24-bit audio DAC using a 2.5 V reference, this low noise floor prevents reference noise from limiting dynamic range, helping achieve signal-to-noise ratios above 110 dB in high-fidelity audio systems.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 19+ | $5.8300 | $110.77 |
| 100+ | $5.1962 | $519.62 |
| 250+ | $4.7875 | $1196.88 |
| 1000+ | $4.4000 | $4400.00 |
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