AD7834AR

$32.65

Description：IC DAC 14BIT V-OUT 28SOIC
Series：-

SKU:929dbc302890 Category: Digital to Analog Converters (DAC) Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC DAC 14BIT V-OUT 28SOIC
Series：-
Mfr：Analog Devices Inc.
Package：Tube,Tube
Number of Bits：14
Number of D/A Converters：4
Settling Time：10µs (Typ)
Output Type：Voltage - Buffered
Differential Output：No
Data Interface：SPI
Reference Type：External
Voltage - Supply, Analog：±11.4V ~ 15.75V
Voltage - Supply, Digital：5V
INL/DNL (LSB)：±2 (Max), ±0.9 (Max)
Architecture：R-2R
Operating Temperature：-40°C ~ 85°C
Package / Case：28-SOIC (0.295", 7.50mm Width)
Supplier Device Package：28-SOIC
Mounting Type：Surface Mount
Grade：-
Qualification：-

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AD7834AR

Overview

The AD7834AR is a monolithic quad 14-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It utilizes LC2MOS technology and R-2R architecture to provide four independent voltage outputs with a maximum span of 14 V and a range of ±8.192 V. The device features serial data loading via DIN, SCLK, and FSYNC pins, supporting up to 32 individually addressed units through five dedicated package address pins (PA0–PA4). Key electrical specifications include a typical settling time of 10 µs, relative accuracy of ±2 LSB, and differential nonlinearity of ±0.9 LSB. It operates on dual analog supplies (±15 V or ±12 V) and a single 5 V logic supply.

Feature Summary

Quad 14-bit DACs integrated in a single 28-lead SOIC package
Serial input interface with user-assigned addressing for multi-device systems
Asynchronous clear function to set outputs to a user-defined DSG potential
Power-on reset circuitry holding outputs within ±2 V of DSG during stabilization

Applications

Process control systems
Automatic test equipment
General-purpose instrumentation

Procurement Notes

The AD7834AR is listed as obsolete and no longer manufactured by Analog Devices Inc. Verification of availability should focus on surplus distributors or alternative packages such as the AD7834ARZ. Buyers must confirm the specific revision and lot date codes due to the component's discontinued status.

Selection Notes

Select the AD7834AR when a serial interface is required for a quad-channel 14-bit DAC application. Ensure the design accommodates the ±15 V or ±12 V analog supply rails and 5 V logic level. For parallel loading requirements, consider the AD7835 variant instead. Verify that the 28-SOIC thermal resistance of 75 °C/W meets the system's dissipation needs.

Part Context

The AD7834 belongs to the AD7834/AD7835 family of LC2MOS DACs. It is distinguished from the AD7835 by its serial data input method, whereas the AD7835 supports parallel 8-bit or 14-bit loading. Both devices share similar accuracy specifications and output capabilities but differ in pin count and interface protocols.