ChipApex | Global Electronic Components Supplier
AD7845AQ
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
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 Detailed Parameters
- Description：IC DAC 12BIT V-OUT 24CDIP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：12
- Number of D/A Converters：1
- Settling Time：5µs
- Output Type：Voltage - Buffered
- Differential Output：No
- Data Interface：Parallel
- Reference Type：External
- Voltage - Supply, Analog：±14.25V ~ 15.75V
- Voltage - Supply, Digital：-
- INL/DNL (LSB)：±1 (Max), ±1 (Max)
- Architecture：R-2R
- Operating Temperature：-40°C ~ 85°C
- Package / Case：24-CDIP (0.300", 7.62mm)
- Supplier Device Package：24-CDIP
- Mounting Type：Through Hole
- Grade：-
- Qualification：-
Download product information
Overview
The AD7845AQ is a complete 12-bit multiplying digital-to-analog converter (MDAC) with an integrated output amplifier, manufactured by Analog Devices Inc. Fabricated on the LC2MOS process, it supports full 4-quadrant multiplication and features TTL and 5 V CMOS compatible digital inputs. The device includes three internal application resistors for gain ranging and offset adjustment. It operates within an industrial temperature range of –40 °C to +85 °C and is housed in a 24-lead Cerdip (Q-24) package. Key electrical specifications include a maximum settling time of 5 µs, ±1 LSB relative accuracy at +25 °C, and power supply ranges of ±14.25 V to ±15.75 V.
Feature Summary
- Integrated 12-bit CMOS MDAC with on-chip unity-gain output amplifier
- Full 4-quadrant multiplying capability with low digital feedthrough error
- Three on-chip application resistors (RA, RB, RC) for flexible gain and offset scaling
- Guaranteed monotonic operation across the entire specified temperature range
Applications
- Automatic Test Equipment
- Programmable Gain Amplifiers
- Digital Attenuators
- Programmable Power Supplies
- Digital-to-4–20 mA Converters
Procurement Notes
Verify the specific suffix 'AQ' against the manufacturer's ordering guide to confirm the Q-24 Cerdip package and industrial temperature rating. Ensure that system designs account for ESD sensitivity during handling. Confirm that the required power supply voltages fall within the specified ±14.25 V to ±15.75 V range for optimal performance.
Selection Notes
Select the AD7845AQ when an industrial temperature range (–40 °C to +85 °C) is required alongside a hermetic or robust Cerdip package. Choose this model over plastic DIP variants if higher environmental reliability is needed. Verify that the 12-bit resolution and 5 µs settling time meet the system's speed and precision requirements.
Part Context
The AD7845 series represents Analog Devices' first industry-standard 4-quadrant multiplying DAC with an integrated amplifier. The AQ variant specifically denotes the industrial temperature grade and the 24-lead Cerdip packaging option. This component belongs to a family designed to reduce board space by integrating functions typically requiring external components.
Replacement Considerations
Direct replacements within the same package and temperature grade include the AD7845BQ, which offers improved relative accuracy of –1/2 LSB at +25 °C. Other package options such as the AD7845AR (SOIC) or AD7845JP (PLCC) are available but require pinout and footprint verification.
