AD7945BN

$6.58

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

SKU:410730a36d0e Category: Digital to Analog Converters (DAC) Brand: Analog Devices Inc.

Consult the customer manager about the wholesale price.

consultation hotline：86-132-6715-2157

email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.

Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.

Product introduction

Product Detailed Parameters

Description：IC DAC 12BIT A-OUT 20DIP
Series：-
Mfr：Analog Devices Inc.
Package：Tube,Tube
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-DIP (0.300", 7.62mm)
Supplier Device Package：20-PDIP
Mounting Type：Through Hole

Download product information

AD7945BN

Overview

The AD7945BN is a 12-bit multiplying digital-to-analog converter (DAC) from Analog Devices, featuring a parallel data interface. It operates on a single +5 V supply in Normal Mode or between +3.3 V and +5 V in Biased Mode. The device guarantees ±0.5 LSB integral nonlinearity (INL) and differential nonlinearity (DNL). Key electrical parameters include a typical power dissipation of 5 mW, a settling time of 600 ns to 0.01%, and a glitch impulse of 60 nV-s. It utilizes an R-2R segmented architecture and is housed in a 20-lead Plastic DIP package.

Feature Summary

12-bit resolution with guaranteed ±0.5 LSB INL and DNL linearity
Fast parallel interface with 40 ns minimum write pulsewidth
Low power consumption: typically 5 mW at +5 V supply
High speed performance: 600 ns settling time to 0.01% full-scale

Applications

Battery-powered instrumentation
Laptop computers
Upgrades for legacy 754x series DAC designs

Procurement Notes

Verify the specific package suffix 'N' corresponds to the 20-lead Plastic DIP configuration required for the installation. Confirm that the B Grade temperature range (-40°C to +85°C) meets the operational environmental requirements. Ensure the design supports the necessary parallel bus timing constraints defined in the datasheet specifications.

Selection Notes

Select this component when a 12-bit parallel input DAC is required for single-supply applications. The AD7945BN is suitable for replacing older industry-standard parts like the AD7545. Consider the Biased Mode variants if operation strictly below 5 V is needed, though the BN grade is optimized for standard +5 V systems.

Part Context

The AD7945BN belongs to the AD7943/AD7945/AD7948 family of fast multiplying DACs. While the AD7943 uses a serial interface and the AD7948 uses an 8-bit byte interface, the AD7945 specifically provides a 12-bit parallel interface. All three share similar internal architectures and performance characteristics but differ in data loading methods.