ChipApex | Global Electronic Components Supplier
SEARCH
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 17BIT A-OUT 16DIP
- Series：LOGDAC®
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：17
- Number of D/A Converters：1
- Settling Time：-
- Output Type：Current - Unbuffered
- Differential Output：No
- Data Interface：Parallel
- Reference Type：-
- Voltage - Supply, Analog：5V
- Voltage - Supply, Digital：5V
- INL/DNL (LSB)：-
- Architecture：R-2R
- Operating Temperature：-40°C ~ 85°C
- Package / Case：16-DIP (0.300", 7.62mm)
- Supplier Device Package：16-PDIP
- Mounting Type：Through Hole
- Grade：-
- Qualification：-
Download product information
Overview
The AD7111ABN is a monolithic logarithmic multiplying digital-to-analog converter (DAC) from Analog Devices, part of the LOGDAC family. It provides an attenuation range of 0 dB to 88.5 dB with a nominal resolution of 0.375 dB. The device accepts an 8-bit parallel input which is internally decoded into a 17-bit word driving an R-2R ladder. Operating on a single +5 V supply, it features on-chip data latches and low power consumption. The AD7111ABN is specified for industrial temperature ranges (-40°C to +85°C) and guarantees monotonicity up to 60 dB attenuation in 0.375 dB steps.
Feature Summary
- Logarithmic Attenuation: Provides 0 dB to 88.5 dB dynamic range in 0.375 dB steps.
- High Resolution: Internal 17-bit R-2R DAC architecture driven by an 8-bit interface.
- Industrial Temperature Range: Specified for operation between -40°C and +85°C.
- Low Power Consumption: Maximum supply current of 2 mA at +5 V.
Applications
- Audio Attenuators
- Sonar Systems
- Function Generators
- Digitally Controlled AGC Systems
Procurement Notes
Verify the specific grade suffix 'AB' confirms the industrial temperature range (-40°C to +85°C) and accuracy specifications (0 dB to 60 dB guaranteed). Confirm package type 'N' corresponds to the 16-pin Plastic DIP. Check for end-of-life status or obsolescence notices as this component may be superseded by newer generations.
Selection Notes
Select the AD7111ABN when precise logarithmic signal attenuation is required over a wide dynamic range. Ensure the output amplifier selection supports the high-speed requirements and low bias currents needed to minimize offset errors. Verify that the system's microprocessor interface timing meets the setup and hold time requirements for the WR and CS signals.
Part Context
The AD7111ABN belongs to the AD7111/AD7111A LOGDAC series. The 'A' suffix denotes the AD7111A variant, which features level-triggered write inputs allowing transparent latch operation, unlike the edge-triggered AD7111. The 'B' indicates the accuracy grade, and 'N' specifies the 16-pin plastic DIP package.
Replacement Considerations
The AD7111A is pin-compatible with the industry-standard AD7524, allowing for direct upgrades to designs requiring wider dynamic range. No other direct cross-references are documented in the provided datasheet.
