Analog Devices Inc. LTC6652BHLS8-5

Overview

LTC6652BHLS8-5 from Analog Devices (acquired Linear Technology) is a precision buffered voltage reference IC delivering 5.000 V output with ±0.1% initial accuracy, 8 ppm/°C max temperature coefficient (B-grade, LS8 package), and 2.8 ppm_P-P (0.1 Hz–10 Hz) low-frequency noise. It operates from 2.7 V to 13.2 V supply, sinks/sources ±5 mA, and is specified over –40°C to 125°C for automotive sensor signal conditioning and high-resolution ADC biasing.

For engineers reviewing the LTC6652BHLS8-5 datasheet, LTC6652BHLS8-5 pinout, LTC6652BHLS8-5 application, or LTC6652BHLS8-5 equivalent, key selection criteria include hermetic LS8 package stability, thermal hysteresis ≤45 ppm (–40°C to 125°C), long-term drift of 20 ppm/√kHr, shutdown current <2 µA, and guaranteed 5 mA sourcing/sinking capability at 5 V output.

Technical Context

The LTC6652BHLS8-5 employs high-order curvature-compensated bandgap architecture to achieve predictable, monotonic temperature behavior and low drift. Its internal buffered output eliminates load regulation sensitivity-maintaining ≤75 ppm/mA sourcing and ≤450 ppm/mA sinking error across full temperature range.

It integrates active shutdown control with hysteresis on SHDN input (V_{TH_UP} ≈ 2.0 V, V_{TH_DN} ≈ 1.5 V), enabling robust low-power operation in battery-backed systems. The LS8 ceramic LCC package provides hermetic sealing, eliminating humidity-induced drift and supporting stable performance in harsh industrial environments.

Key Specifications

Pinout & Package

The LTC6652BHLS8-5 uses an 8-pin leadless ceramic chip carrier (LCC), 5 mm × 5 mm, hermetically sealed (LS8 package). Pins are arranged in a square configuration with exposed ground paddle; all GND pins must be soldered to PCB ground plane for thermal and electrical stability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with REF5050IDR and ADR4550BRZ, the LTC6652BHLS8-5 uniquely combines automotive-grade temperature range, integrated shutdown, hermetic LS8 packaging, and guaranteed ±5 mA drive-making it optimal for space-constrained, high-reliability embedded systems requiring both precision and power management.

Availability

LTC6652BHLS8-5 is available at Aetrix Electronics and suitable for automotive engine control, industrial data acquisition, and medical patient monitoring requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for LTC6652BHLS8-5 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) acquired Linear Technology in 2017 and maintains its precision analog portfolio, including voltage references, with focus on high-performance, high-reliability signal chain components.

The LTC6652 family was designed specifically for demanding applications requiring low drift, low noise, and robust operation across –40°C to 125°C-targeting automotive, industrial, and medical instrumentation markets.

FAQ

What is the maximum supply voltage for the LTC6652BHLS8-5?

The LTC6652BHLS8-5 supports a maximum input voltage of 13.2 V. Exceeding this rating risks permanent damage per Absolute Maximum Ratings. Operation up to 13.2 V enables compatibility with unregulated 12 V automotive rails and industrial 24 V systems with appropriate pre-regulation. The device maintains full specification compliance across its entire 2.7 V to 13.2 V input range.

Does the LTC6652BHLS8-5 require an output capacitor?

No, the LTC6652BHLS8-5 is stable without an output capacitor. However, adding a 0.1 µF to 10 µF capacitor improves transient response for loads that source current or exhibit rapid current changes. The LS8 package's low output impedance and internal compensation eliminate oscillation risk-even with no capacitor-making it ideal for space-constrained PCB layouts where capacitance is omitted.

How does the shutdown function work on the LTC6652BHLS8-5?

The LTC6652BHLS8-5 enters shutdown when SHDN (Pin 3) is pulled below 1.5 V, reducing supply current to <2 µA. In shutdown, VOUT becomes a high-impedance node with effective resistance of ~50 kΩ (20 kΩ/V × 5 V). To exit shutdown, SHDN must rise above ~2.0 V. The hysteresis between turn-on and turn-off thresholds prevents chatter near the switching point.

What is the thermal hysteresis specification for the LTC6652BHLS8-5?

The LTC6652BHLS8-5 exhibits ≤45 ppm thermal hysteresis over the –40°C to 125°C temperature cycle, measured as the difference in output voltage at 25°C after exposure to extremes. This value is specific to the hermetic LS8 package and reflects minimal mechanical stress memory-critical for applications involving repeated thermal cycling, such as automotive diagnostics equipment.

Can the LTC6652BHLS8-5 drive a 10 µF capacitive load?

Yes, the LTC6652BHLS8-5 remains stable with up to 10 µF output capacitance, as confirmed by stability plots in the datasheet. While 0.1 µF–1 µF is typical for most applications, 10 µF is explicitly validated for heavy sourcing loads. Stability is maintained across the full temperature range, and no series resistance is required-simplifying design for high-ESR electrolytic or polymer capacitors used in industrial power supplies.