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AD7846JN
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Product Detailed Parameters
- Description：IC DAC 16BIT V-OUT 28DIP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube,Tube
- Number of Bits：16
- Number of D/A Converters：1
- Settling Time：9µs
- Output Type：Voltage - Buffered
- Differential Output：No
- Data Interface：Parallel
- Reference Type：External
- Voltage - Supply, Analog：±11.4V ~ 15.75V
- Voltage - Supply, Digital：5V
- INL/DNL (LSB)：±16 (Max), ±1 (Max)
- Architecture：String DAC
- Operating Temperature：0°C ~ 70°C
- Package / Case：28-DIP (0.600", 15.24mm)
- Supplier Device Package：28-PDIP
- Mounting Type：Through Hole
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Overview
The AD7846JN is a 16-bit voltage output digital-to-analog converter (DAC) manufactured by Analog Devices Inc. utilizing the LC2MOS process. It features a segmented architecture ensuring monotonicity, with integral linearity error specified at ±2 LSBs for the K/B versions and ±12 LSBs for J/A versions. The device operates on dual analog supplies ranging from ±11.4 V to ±15.75 V and a single +4.75 V to +5.25 V digital supply. It provides unipolar or bipolar output ranges via an on-chip amplifier and includes microprocessor-compatible parallel I/O with readback capability. Typical power dissipation is 100 mW.
Feature Summary
- 16-bit resolution with guaranteed monotonicity over temperature
- Microprocessor interface with readback capability for ATE applications
- Unipolar or bipolar output configuration options
- Low power consumption of 100 mW typical
Applications
- Closed-loop control systems requiring high accuracy
- Automatic Test Equipment (ATE) diagnostic routines
- Position measurement using LVDT interfaces
- Multiplying DAC applications
Procurement Notes
Verify the specific grade suffix (J or K) when ordering, as performance specifications such as relative accuracy and gain error differ significantly between the commercial (0°C to +70°C) and extended/industrial variants. Confirm package availability, as the JN designation corresponds to the plastic DIP-28 package.
Selection Notes
Select the AD7846JN for applications requiring parallel data interfaces and simultaneous multi-DAC updating via the LDAC pin. Ensure the system can provide the required ±15 V analog supplies and +5 V digital logic levels. Consider the K version if tighter linearity specifications are necessary compared to the standard J version.
Part Context
The AD7846 belongs to the AD7846 family of 16-bit DACs. It is available in multiple packages including PDIP-28 (JN), CERDIP-28 (AN), PLCC-28 (JPZ), and LCC-28 (KNZ). The JN variant specifically denotes the plastic dual in-line package suitable through-hole mounting.
Replacement Considerations
Direct replacements within the same family include AD7846KNZ (PLCC package) and AD7846JPZ (PLCC package). Cross-package replacements require adapter sockets or PCB redesign due to differing pinouts and mechanical dimensions.
