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AD7835APZ
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Product Detailed Parameters
- Description：IC DAC 14BIT V-OUT 44PLCC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：14
- Number of D/A Converters：4
- Settling Time：10µs (Typ)
- 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)：±2 (Max), ±0.9 (Max)
- Architecture：R-2R
- Operating Temperature：-40°C ~ 85°C
- Package / Case：44-LCC (J-Lead)
- Supplier Device Package：44-PLCC (16.59x16.59)
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
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Overview
The AD7835APZ is a quad 14-bit digital-to-analog converter (DAC) from Analog Devices, housed in a 44-lead PLCC package. It features parallel data loading with support for both 14-bit straight words and double-byte (8-bit/6-bit) formats. The device provides four voltage outputs with a maximum span of 14 V and a range of ±8.192 V. Key specifications include a typical output settling time of 10 μs, a glitch impulse of 120 nV-s, and channel-to-channel isolation of 100 dB. It operates with a 5 V logic supply and dual analog supplies up to ±15 V.
Feature Summary
- Quad 14-bit LC2MOS DAC architecture with parallel input interface
- Maximum output voltage span of 14 V (±8.192 V range)
- 100 dB channel-to-channel isolation and 10 μs settling time
- Asynchronous clear function to user-defined Device Sense Ground (DSG)
Applications
- Process control systems
- Automatic test equipment
- General-purpose instrumentation
Procurement Notes
Verify the package type matches the 44-lead PLCC specification. Confirm that the design supports parallel data interfaces, as this model differs from the serial-loading AD7834 variant. Ensure power supply sequencing protects against VCC exceeding VDD by more than 0.3 V.
Selection Notes
Select the AD7835APZ when parallel bus interfacing is required rather than serial communication. This component is suitable for applications needing four independent high-resolution voltage outputs with simultaneous update capabilities via the LDAC pin. Verify that the system can accommodate the 44-lead PLCC footprint.
Part Context
The AD7835 is part of the AD7834/AD7835 family of LC2MOS quad DACs. While the AD7834 utilizes a serial interface, the AD7835 is designed for parallel loading. The APZ suffix indicates the specific 44-lead Plastic Leadless Chip Carrier (PLCC) package variant within this product line.
Replacement Considerations
The AD7834ANZ is a related component but uses a serial interface and a 28-lead DIP package, requiring significant schematic changes. No direct pin-compatible parallel replacement is identified in the provided documentation.
