Analog Devices Inc. LTC1196-1BCS8#PBF

Overview

LTC1196-1BCS8#PBF from Analog Devices (formerly Linear Technology) is a single-supply, 8-bit, 1Msps successive approximation ADC with differential analog inputs, integrated sample-and-hold, and 3-wire serial interface. It operates from 2.7V to 6V, delivers ±1/2 LSB total unadjusted error over temperature, supports 1V–5V input span range, and targets high-speed data acquisition in compact systems.

For engineers reviewing the LTC1196-1BCS8#PBF datasheet, LTC1196-1BCS8#PBF pinout, LTC1196-1BCS8#PBF application, or LTC1196-1BCS8#PBF equivalent, key selection criteria include its differential input architecture, 600ns conversion time at 5V, SO-8 package compatibility, and support for ratiometric operation with external reference or direct V_CC-referenced conversion.

Technical Context

The LTC1196-1BCS8#PBF implements a switched-capacitor SAR architecture with on-chip sample-and-hold enabling full-accuracy input bandwidth up to 1MHz. Its differential input stage accepts signals floating on DC common-mode voltage and supports reduced spans down to 1V full-scale, eliminating need for gain stages in many sensor interfaces.

Serial communication uses CS, CLK, and DOUT lines with MSB-first output; no DIN required. Conversion is initiated by falling CS edge, followed by two null bits before 8-bit result. Timing is tightly specified: t_CONV = 600 ns max at 5V, f_CLK(MAX) = 14.4 MHz, and t_SMPL = 2.5 clock cycles - all validated for Grade B accuracy across 0°C to 70°C.

Key Specifications

Pinout & Package

Package: 8-lead plastic SO (SO-8), 150°C max junction temperature, θ_JA = 175°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS7822U and MAX1112CPE+, the LTC1196-1BCS8#PBF uniquely combines differential input, 1 MSPS speed, SO-8 footprint, and ±1/2 LSB error in a single 2.7–6V supply device - making it optimal for new compact, high-fidelity data acquisition designs.

Availability

LTC1196-1BCS8#PBF is available at Aetrix Electronics and suitable for disk drive read channels, portable instrumentation, and low-power sensor nodes requiring stable component supply and long-term production continuity.

Supply support for LTC1196-1BCS8#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, serving industrial, automotive, communications, and healthcare markets.

The LTC1196 family was designed by Linear Technology (acquired by ADI in 2017) specifically for compact, high-speed data acquisition systems needing low-power, high-accuracy 8-bit conversion with minimal external components.

FAQ

What is the maximum clock frequency supported by the LTC1196-1BCS8#PBF?

The LTC1196-1BCS8#PBF supports a maximum clock frequency of 14.4 MHz at V_CC = 5V, enabling its 600 ns conversion time. At 2.7V supply, the maximum clock drops to 5.4 MHz per the datasheet's Recommended Operating Conditions table. Exceeding these limits risks timing violations and degraded AC performance such as reduced S/(N+D).

Does the LTC1196-1BCS8#PBF require an external reference voltage?

Yes - the LTC1196-1BCS8#PBF requires an external reference applied to the VREF pin (Pin 5). It accepts 1V to 5V, and the full-scale range is defined as VREF. The device does not include an internal reference; using VCC as reference is possible but degrades accuracy due to supply ripple sensitivity.

Can the LTC1196-1BCS8#PBF operate from a 3.3V supply?

Yes - the LTC1196-1BCS8#PBF is fully specified from 2.7V to 6V. At 3.3V, it achieves up to 450 kSPS maximum sampling rate and consumes ~2 mA typical supply current. Performance metrics including S/(N+D) and THD remain within datasheet limits when proper decoupling and layout guidelines are followed.

What is the meaning of the "-1B" suffix in LTC1196-1BCS8#PBF?

The "-1B" denotes Grade B accuracy: total unadjusted error ≤ ±1 LSB (with ±1/2 LSB typical) over the full 0°C to 70°C operating temperature range. The "1" indicates the standard 1V–5V input span version, and "B" confirms the tighter error spec versus Grade A (±1/2 LSB max) or Grade C (±1 LSB max).

How does the LTC1196-1BCS8#PBF handle input leakage current?

The LTC1196-1BCS8#PBF specifies analog input leakage current as ±1 μA maximum over temperature. This low leakage enables direct connection to high-impedance sources (e.g., piezoelectric sensors or RC-filtered signals) without significant gain error - critical for maintaining accuracy in precision measurement paths.