Manufacturer Part Number

AD558KP-REEL7

Description

8-bit digital-to-analog converter, provides voltage output with a buffered configuration. Supports fast operation with 3 microseconds settling time. Packaged in a small 20-pin PLCC form factor. Now classified as obsolete, but available in limited stock.

Specifications

Number of bits: 8

Number of D/A converters: 1

Architecture: R-2R ladder

Settling time: 3µs

Output type: Voltage, buffered

Differential output: No

Data interface: Parallel

Reference type: Internal reference

Analog supply voltage: 4.5V to 16.5V

Digital supply voltage: 4.5V to 16.5V

INL/DNL (Integral/ Differential Nonlinearity): ±0.25 LSB (max)

Operating temperature range: 0°C to 70°C

Package: 20-LCC (J-Lead), supplier package 20-PLCC (9x9mm)

Mounting type: Surface mount

Moisture Sensitivity Level (MSL): 1 (Unlimited)

Product series: DACPORT®

Device Structure

Single-channel R-2R architecture DAC with integrated voltage output buffer. Contains an internal reference voltage source. Designed in a compact PLCC surface-mount package with 20 leads.

Performance Characteristics

Fast 3µs settling time, allowing quick changes in analog output. High resolution with 8-bit accuracy. Low INL/DNL ensures high fidelity in analog signal conversion. Buffered output avoids load capacitance effects. Wide analog and digital supply voltage support from 4.5V to 16.5V.

Application Environments

Best suited for industrial controls, instrumentation, process automation, data acquisition systems, automatic test equipment, and any other systems requiring medium-resolution voltage output DACs. Appropriate for applications operating in standard commercial temperature ranges (0°C to 70°C). Not qualified for automotive, military, or extended temperature use.

Selection Guidelines

Choose if your application requires:

8-bit output resolution

Fast settling time (3µs)

Buffered voltage output

Single channel, parallel data input

Internal voltage reference for simplified design

Operates in standard environment (commercial temperature)

Make sure the 20-PLCC package fit is compatible with your PCB assembly.

Usage Considerations

This model is obsolete. Confirm stock before selecting. When using, ensure power supply voltages are within 4.5V to 16.5V range. Verify parallel data interface compatibility with your host system. Observe 0°C to 70°C operating temperature. Moisture sensitivity is not critical (MSL 1). Handle carefully to avoid ESD and physical damage to the leads.

Potential Equivalent/Replacement Models

Since this part is obsolete, check whether your application can use other Analog Devices’ DACPORT® family models (such as AD558KN, AD558JN), but confirm pinout and performance compatibility. Equivalent 8-bit voltage output DACs are available from other manufacturers, for example:

Texas Instruments DAC0808 series (note: different interface and package)

Maxim Integrated MAX503

Microchip MCP4921 (note: SPI interface, not parallel)

However, these models may differ in package style, interface type, performance, and pin configuration. Carefully compare datasheets before direct replacement.

If you need exact drop-in alternatives or additional replacement suggestions, please contact our Ariat-Tech sales team for detailed support.

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