AD7840ARS-REEL

Description：IC DAC 14BIT V-OUT 24SSOP
Series：-

SKU:281c47c4995c 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 24SSOP
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)
Number of Bits：14
Number of D/A Converters：1
Settling Time：4µs
Output Type：Voltage - Buffered
Differential Output：No
Data Interface：Parallel, Serial
Reference Type：External, Internal
Voltage - Supply, Analog：±5V
Voltage - Supply, Digital：-
INL/DNL (LSB)：±2 (Max), ±0.9 (Max)
Architecture：R-2R
Operating Temperature：-25°C ~ 85°C
Package / Case：24-SSOP (0.209", 5.30mm Width)
Supplier Device Package：24-SSOP
Mounting Type：Surface Mount
Grade：-
Qualification：-

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AD7840ARS-REEL

Overview

The AD7840ARS-REEL is a complete 14-bit voltage output digital-to-analog converter (DAC) from Analog Devices Inc. It integrates a 14-bit DAC, a 3 V buried Zener reference, an output amplifier, and high-speed control logic within a single LC2MOS chip. The device supports both parallel and serial interfaces, enabling direct connection to DSPs like the ADSP-2100 and TMS320 series. It operates on ±5 V supplies, delivering a bipolar output range of ±3 V with a typical power dissipation of 70 mW. The industrial temperature grade version covers -25°C to +85°C.

Feature Summary

Complete 14-bit resolution with integrated 3 V reference and output buffer
Dual interface capability: 14-bit parallel mode or 6 MHz serial mode
Industrial temperature range (-25°C to +85°C)
Typical settling time of 2 µs and 80 dB signal-to-noise ratio

Applications

Direct interfacing with high-speed DSP processors such as ADSP-2100 and TMS32010
Servo control systems requiring fast update rates
Speech synthesis applications
High-speed modem signal generation

Procurement Notes

Verify that the ordering suffix 'ARS' corresponds to the industrial temperature range (-25°C to +85°C) and the RS-24 package type as defined in the manufacturer's ordering guide. Confirm that the '-REEL' designation indicates tape-and-reel packaging rather than tube packaging. Ensure the specific revision level matches the required datasheet specifications for dynamic performance parameters.

Selection Notes

Select this component when a 14-bit resolution with a wide bipolar output range of ±3 V is required. It is suitable for designs needing low power consumption (typically 70 mW) and fast settling times (2 µs). Choose the serial interface option if pin count reduction is necessary, utilizing the SCLK, SYNC, and SDATA pins. Ensure the system can provide the required ±5 V supply rails and that the load impedance meets the 2 kΩ specification for optimal performance.

Part Context

The AD7840 belongs to the AD7840 family of complete 14-bit DACs. Variants include the JN/KN (commercial DIP), JP/KP (commercial PLCC), AQ/BQ (industrial Cerdip), SQ (military Cerdip), and ARS (industrial SSOP). The AD7840ARS-REEL specifically denotes the industrial grade version packaged in a 24-lead SSOP format supplied in a reel.