AD7834BR-REEL

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

SKU:b1613b5dd889 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：Tape & Reel (TR)
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)：±1 (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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AD7834BR-REEL

Overview

The AD7834BR-REEL is a quad 14-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It features four independent voltage-output DACs on a single monolithic LC2MOS chip, utilizing an R-2R architecture. The device accepts serial data via DIN, SCLK, and FSYNC inputs, supporting up to 32 individually addressable units through dedicated PA0–PA4 pins. Key electrical specifications include a maximum output voltage span of 14 V (±8.192 V range), a typical settling time of 10 µs, and relative accuracy of ±1 LSB for the B grade. Power requirements consist of a 5 V logic supply (VCC) and dual analog supplies (VDD/VSS).

Feature Summary

Quad 14-bit resolution with R-2R segmented architecture.
Serial input interface (DIN, SCLK, FSYNC) with user-assigned package addressing.
Asynchronous CLR function to force outputs to Device Sense Ground (DSG).
Power-on reset circuitry holding outputs within ±2 V of DSG during stabilization.

Applications

Process control systems requiring multi-channel precision.
Automatic test equipment (ATE) signal generation.
General-purpose instrumentation with high channel density needs.

Procurement Notes

Verify the 'B' suffix indicates the industrial temperature grade (-40°C to +85°C) with ±1 LSB relative accuracy. Confirm the '-REEL' suffix denotes tape-and-reel packaging rather than tube. Check current manufacturing status as legacy components may have limited availability or require obsolescence management strategies.

Selection Notes

Select the AD7834 over the AD7835 when a serial interface is preferred to reduce pin count and wiring complexity in multi-device systems. Ensure the application supports the required ±15 V analog supply rails and 5 V logic levels. Verify that the 10 µs settling time meets the system's update rate requirements.

Part Context

This component belongs to the AD7834/AD7835 family of LC2MOS quad DACs. The AD7834 variant specifically utilizes serial loading, whereas the AD7835 uses parallel loading. The BR-REEL designation specifies the B-grade performance, SOIC surface-mount package, and reel packaging format.