Analog Devices Inc. LTC1096LIS8#PBF

Overview

LTC1096LIS8#PBF from Analog Devices (acquired Linear Technology) is a micropower 8-bit successive approximation ADC with single differential analog input, sample-and-hold, and 3-wire serial interface. It operates from 2.65V to 4.0V supply, draws only 80μA during conversion at 33kHz sampling rate, and auto-shuts down to 1nA typical quiescent current. It targets battery-powered sensor interfaces requiring direct connection to low-voltage transducers in remote data acquisition systems.

For engineers reviewing the LTC1096LIS8#PBF datasheet, LTC1096LIS8#PBF pinout, LTC1096LIS8#PBF application, or LTC1096LIS8#PBF equivalent, key selection criteria include its 2.65V minimum supply voltage, ±0.5LSB total unadjusted error over temperature, 16.5kHz max sampling rate at 3V, 8-pin SOIC package, and differential input architecture enabling ratiometric operation with external reference or reduced-span (≤1V FS) measurements.

Technical Context

The LTC1096LIS8#PBF implements a switched-capacitor SAR architecture with integrated sample-and-hold, supporting true differential analog inputs (+IN/–IN) referenced to GND or an external VREF. Its serial port uses a synchronous 3-wire protocol (CS/SHDN, CLK, DOUT), where data is shifted out on CLK falling edges without requiring DIN.

Power management is controlled via CS/SHDN: logic high disables internal circuitry and reduces supply current to 1nA typical; logic low enables conversion and initiates wake-up timing (10μs min from CS↓ to first CLK↓). Conversion time is fixed at 8 clock cycles, with tCYC = 58μs at fCLK = 250kHz, yielding 16.5kHz maximum sampling frequency under 3V operation.

Key Specifications

Pinout & Package

Package: 8-lead plastic SOIC (S8), –40°C to +85°C operating temperature range, JEDEC MS-012AC compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit micropower ADC applications.

Compared with ADS7822U and MAX11100ASA+, the LTC1096LIS8#PBF uniquely combines 2.65V minimum operation, true differential inputs, and 1nA shutdown-making it optimal for ultra-low-power, sensor-ratiometric, and space-constrained designs where 8-bit resolution suffices.

Availability

LTC1096LIS8#PBF is available at Aetrix Electronics and suitable for battery-operated systems, remote data acquisition nodes, and isolated industrial sensors requiring stable component supply across extended temperature ranges.

Supply support for LTC1096LIS8#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, formed through the acquisition of Linear Technology in 2017.

The LTC1096/LTC1096L series was designed by Linear Technology specifically for ultra-low-power, space-constrained data acquisition in portable and remote sensing applications-emphasizing micropower efficiency, small footprint, and simplified interface.

FAQ

What is the minimum supply voltage required for reliable operation of the LTC1096LIS8#PBF?

The LTC1096LIS8#PBF is specified to operate down to 2.65V across its full –40°C to +85°C temperature range. Below this voltage, parameters such as conversion accuracy, clock timing margins, and digital input thresholds are not guaranteed. At 2.65V, it maintains ±1.5 LSB total unadjusted error and supports up to 250kHz clock frequency with appropriate timing margins.

Does the LTC1096LIS8#PBF support differential input measurements?

Yes, the LTC1096LIS8#PBF features true differential analog inputs (+IN and –IN pins) that accept signals referenced to GND or an external reference. This architecture enables rejection of common-mode noise in bridge-based sensors and supports ratiometric measurements where the input signal scales with VREF or VCC.

How does the shutdown mode function on the LTC1096LIS8#PBF?

The LTC1096LIS8#PBF enters shutdown mode when CS/SHDN is driven high, reducing supply current to 1nA typical. In this state, the internal reference, sample-and-hold, and digital logic are disabled, and DOUT enters high-impedance. A 10μs wake-up delay is required from CS↓ to the first CLK↓ before valid conversion data appears on DOUT.

Can the LTC1096LIS8#PBF operate without an external reference voltage?

Yes, the LTC1096LIS8#PBF can operate ratiometrically using VCC as the reference by connecting VREF to VCC. This configuration eliminates the need for an external reference and ensures measurement accuracy tracks supply variations-ideal for battery voltage monitoring and other supply-referenced applications.

What is the maximum sampling rate achievable with the LTC1096LIS8#PBF at 3.3V supply?

At VCC = 3.3V, the LTC1096LIS8#PBF supports a maximum sampling rate of 16.5kHz, corresponding to a 58μs conversion cycle time at 250kHz clock frequency. This limit arises from timing constraints including tWHCLK/tWLCLK (≥1.6μs) and tCYC specification, not from analog performance degradation.