LINEAR LTC1448CS8

Mfr. Part

LTC1448CS8

Manufacturer

Linear Technology now part of Analog Devices

Y-IC is a quality distributor for Linear Technology Analog Devices products and we will provide you with the best products and services, including fast delivery, strict quality control, and professional technical support

Detailed Description

Dual channel precision DAC IC designed for low power and small size applications

Voltage output architecture with rail to rail capability in a compact 8 lead SOIC package

Simple 3 wire serial interface that is easy to drive from most MCUs and FPGAs

Single supply operation suitable for battery powered and space constrained designs

Commercial temperature grade version in CS8 package

Classified in Specialized ICs per catalog but functionally a dual precision DAC used in control and automation

Key Features

Two independent DAC channels for flexible control

High resolution with monotonic output across the full code range

Simple SPI compatible 3 wire serial interface for easy integration

Single supply operation suitable for 2.7 V to 5 V systems in typical designs

Rail to rail voltage outputs to maximize usable output swing

Micropower operation to extend battery life

Power on reset and predictable startup behavior for safe system bring up

Small footprint 8 lead SOIC package to save board space

Excellent channel to channel matching for consistent behavior

Robust ESD protected I O for improved handling

Commercial operating temperature grade C version intended for 0 to 70 C ambient

Pin for pin family compatibility across related Linear Technology dual DACs for easy design reuse

Key Advantages

Two outputs let you replace two single DACs with one chip reducing BOM and PCB area

Low power draw reduces thermal load and improves energy efficiency

Easy 3 wire interface reduces firmware effort and pin count on the host controller

Rail to rail outputs simplify analog scaling and reduce external buffer needs

Proven Linear Technology analog performance ensures stable, low noise outputs

Mature, widely used device lowers design risk and speeds qualification

Packaging

Package type CS8 which corresponds to standard 8 lead SOIC narrow

Material molded epoxy package with copper leadframe and matte tin or Sn finish lead plating per RoHS variants

Body size approximately 3.9 mm x 4.9 mm body with 1.27 mm lead pitch and about 1.5 mm max height typical for SOIC 8

Pin configuration 8 leads total arranged in two rows of 4 with typical functions including supply, ground, serial clock, serial data input, chip enable latch, and two analog outputs see datasheet for exact pin assignments

Thermal characteristics typical Theta JA for SOIC 8 on a 2 layer PCB is on the order of 120 to 150 C W in still air actual value depends on board copper and airflow

Electrical properties designed for single supply use low quiescent current, rail to rail output swing, and SPI compatible logic thresholds consult datasheet for guaranteed limits

Shipment format LTC1448CS8 is commonly shipped in tubes while tape and reel is available on TR suffix versions contact us to confirm current lot packaging

Quantity available from this listing 2240 units subject to prior sale

Date code noted 2000 available on current stock line item contact us for exact lot traceability if required

Internal catalog package code reference 4656 corresponds to CS8 SOIC 8 in our system mapping

Lifecycle

Status mature and widely deployed in the field with ongoing availability through Analog Devices and authorized channels

Not flagged as nearing discontinuation based on last public information however lifecycle can change so please confirm with us for the latest status

Equivalent or alternative models to consider depending on resolution, interface, supply, and package needs

- AD5622R dual 12 bit nanoDAC from Analog Devices SPI interface tiny packages internal reference option

- AD5643R AD5663R higher resolution dual DAC family 14 bit 16 bit options with SPI and internal reference

- LTC1446 related Linear Technology dual DAC family member similar concept in SOIC form factor

- LTC1450 single 12 bit voltage output DAC from Linear Technology if a single channel alternative fits

- MCP4922 Microchip dual 12 bit SPI voltage output DAC with optional internal reference variants

- DAC7612 Texas Instruments dual 12 bit voltage output DAC SPI compatible

Always verify pinout, reference scheme, output range, linearity, temp grade, and timing before substituting

If you need a drop in or near drop in cross for LTC1448CS8 contact our Y-IC sales team via our website for a detailed compatibility check

Key Application Areas

Programmable voltage sources and set point generation

Sensor excitation and biasing

Industrial control loops and PLC analog output cards

Portable and battery powered instruments

Data acquisition and test equipment

Communications systems bias and tuning voltages

Motor control reference generation and calibration

Power supply margining and trim

Medical, lab, and measurement instruments needing precise analog levels

Datasheet

The most authoritative datasheet for LTC1448CS8 is available on our website

We recommend you download it from this page to get exact pinouts, timing, electrical characteristics, thermal data, and application notes

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