Analog Devices Inc. LTC6652BHMS8-2.5#PBF

Overview

LTC6652BHMS8-2.5#PBF from Analog Devices (formerly Linear Technology) is a precision buffered voltage reference delivering 2.500 V output with ±0.1% initial accuracy, 10 ppm/°C max temperature coefficient in the MSOP-8 package, and 2.1 ppm_P-P (0.1 Hz to 10 Hz) low-frequency noise - designed for high-resolution ADCs, industrial sensor interfaces, and automotive-grade data acquisition systems operating from –40°C to 125°C.

For engineers reviewing the LTC6652BHMS8-2.5#PBF datasheet, LTC6652BHMS8-2.5#PBF pinout, LTC6652BHMS8-2.5#PBF application, or LTC6652BHMS8-2.5#PBF equivalent, key selection criteria include guaranteed ±5 mA source/sink capability, shutdown current <2 µA, low dropout of 300 mV, thermal hysteresis of 80 ppm over –40°C to 125°C, and compatibility with optional 0.1 µF–10 µF output capacitance without stability risk.

Technical Context

The LTC6652BHMS8-2.5#PBF employs high-order curvature-compensated bandgap architecture to achieve predictable monotonic temperature behavior and <5 ppm/°C typical drift across –40°C to 125°C. Its fully buffered output eliminates load regulation sensitivity while maintaining 200 ppm/mA max sourcing and 450 ppm/mA max sinking error under full temperature range.

It integrates an active-low SHDN pin with hysteresis-controlled thresholds (V_TH(UP) ≈ 2.0 V, V_TH(DN) ≈ 0.8 V at V_IN = 5 V), enabling robust microcontroller interfacing via open-drain drivers. Power supply rejection exceeds –70 dB at 100 Hz with C_OUT = 1 µF, and output impedance remains below 1 Ω up to 10 kHz.

Key Specifications

Pinout & Package

Package: 8-lead plastic MSOP (MS8), 3 mm × 3 mm × 0.85 mm, RoHS-compliant, lead-free finish (#PBF). Thermal resistance θ_JA = 200°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision voltage reference applications.

Compared with REF5025IDR and ADR4525BRZ, the LTC6652BHMS8-2.5#PBF trades minor accuracy and drift for integrated shutdown, ±5 mA drive, and MSOP-8 compactness - making it optimal for space-constrained, battery-aware industrial and automotive modules where moderate precision suffices.

Availability

LTC6652BHMS8-2.5#PBF is available at Aetrix Electronics and suitable for automotive battery monitoring, industrial 4–20 mA transmitters, portable medical ECG front-ends, and test & measurement calibration sources requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for LTC6652BHMS8-2.5#PBF 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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors for precision instrumentation, industrial automation, and communications infrastructure.

The LTC6652 product line was engineered specifically for high-temperature, low-drift, low-noise voltage referencing in harsh environments - targeting automotive, downhole oil/gas, and industrial control applications demanding reliability beyond commercial-grade specs.

FAQ

What is the maximum input voltage rating for the LTC6652BHMS8-2.5#PBF?

The LTC6652BHMS8-2.5#PBF has an absolute maximum input voltage of 13.2 V relative to GND. Operation above this level risks permanent damage. For reliable long-term performance, VIN should be maintained between 2.8 V (VOUT + 300 mV) and 13.2 V, with 0.1 µF local bypass recommended at the VIN pin to suppress high-frequency noise and improve PSRR.

Does the LTC6652BHMS8-2.5#PBF require an output capacitor for stability?

No, the LTC6652BHMS8-2.5#PBF is unconditionally stable without an output capacitor. However, adding 0.1 µF–10 µF can improve transient response for dynamic loads. The device exhibits marginal stability only in narrow regions (e.g., ~1 nF with heavy sourcing), as documented in Figure G14 - so values outside 0.1–10 µF are discouraged unless validated per application.

How does shutdown mode affect the output impedance of the LTC6652BHMS8-2.5#PBF?

In shutdown mode (SHDN ≤ 0.8 V), the LTC6652BHMS8-2.5#PBF disables its internal regulator and presents a high-impedance output: approximately 20 kΩ × V_OUT = 50 kΩ. This allows safe multiplexing or isolation of the reference node without loading adjacent circuitry, unlike active-mode operation where output impedance is <1 Ω up to 10 kHz.

Can the LTC6652BHMS8-2.5#PBF sink and source 5 mA simultaneously?

No - the LTC6652BHMS8-2.5#PBF guarantees ±5 mA capability, meaning it can source up to 5 mA *or* sink up to 5 mA, but not both simultaneously. Sourcing and sinking occur in complementary modes (e.g., driving resistive dividers or op-amp feedback networks), and the total current through VOUT remains within ±5 mA limits under all specified conditions.

What is the thermal hysteresis specification for the LTC6652BHMS8-2.5#PBF in the MSOP-8 package?

The LTC6652BHMS8-2.5#PBF in the MSOP-8 package exhibits 80 ppm thermal hysteresis over the full –40°C to 125°C temperature cycle (measured as voltage shift after cycling from 25°C → –40°C → 25°C or 25°C → 125°C → 25°C). This value is confirmed in the Electrical Characteristics table and Typical Performance Characteristic Figure G13a.