AD7945BRSZ-REEL

$15.40

Description：IC DAC 12BIT A-OUT 20SSOP
Series：-

SKU:a9a91346d344 Category: Digital to Analog Converters (DAC) Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC DAC 12BIT A-OUT 20SSOP
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Number of Bits：12
Number of D/A Converters：1
Settling Time：600µs (Typ)
Output Type：Current - Unbuffered
Differential Output：No
Data Interface：Parallel
Reference Type：External
Voltage - Supply, Analog：5V
Voltage - Supply, Digital：5V
INL/DNL (LSB)：±0.5 (Max), ±0.5 (Max)
Architecture：R-2R
Operating Temperature：-40°C ~ 85°C
Package / Case：20-SSOP (0.209", 5.30mm Width)
Supplier Device Package：20-SSOP
Mounting Type：Surface Mount

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AD7945BRSZ-REEL

Overview

The AD7945BRSZ-REEL is a 12-bit multiplying digital-to-analog converter (DAC) from Analog Devices, part of the AD7943/AD7945/AD7948 family. It features a parallel interface with 12-bit data inputs and operates from a single +5 V supply in Normal Mode or a +3.3 V to +5 V supply in Biased Mode. Key electrical specifications include ±0.5 LSB maximum relative accuracy and differential nonlinearity, a typical power consumption of 5 mW, and a fast settling time of 600 ns to 0.01% full-scale range. The device utilizes a segmented architecture with an R-2R ladder for the lower 10 bits.

Feature Summary

12-bit resolution with guaranteed monotonicity over temperature
Parallel interface with active-low Chip Select (CS) and Write (WR) inputs
Low glitch impulse of 60 nV-s typ with amplifier connected
Fast settling time of 600 ns to 0.01% full-scale range

Applications

Battery-powered instrumentation
Laptop computers
Upgrades for all 754x series DACs in 5 V designs

Procurement Notes

Verify that the ordering suffix 'BRSZ' corresponds to the SSOP-20 package variant as listed in the manufacturer's ordering guide. Confirm RoHS compliance status through official documentation, as historical versions may differ. Ensure the specific grade (B Grade vs T Grade) matches the required temperature range of -40°C to +85°C or -55°C to +125°C.

Selection Notes

Select the AD7945BRSZ-REEL when a parallel interface is preferred over serial (AD7943) or byte-wide (AD7948) options. Choose this component for applications requiring low power consumption (5 mW typ) and high speed (600 ns settling). Ensure the system supports the required digital input voltage levels (VINH min 2.4 V at 5 V supply) and reference voltage configurations.

Part Context

This component belongs to the AD794x family of fast 12-bit multiplying DACs. It serves as a direct replacement for industry-standard parts like the AD7545, offering superior speed and power performance. The 'BRS' designation indicates the industrial temperature grade (-40°C to +85°C) and the Shrink Small Outline Package (SSOP) with 20 leads.