AD5378
PRODUCTION32-Channel 14-Bit Serial/Parallel Bipolar D/A Converter
- Part Models
- 1
- 1ku List Price
- Starting From $70.35
Overview
- 32-channel DAC in 13 mm × 13 mm 108-lead CSPBGA
- Guaranteed monotonic to 14 bits
- System calibration function allowing user-programmable offset and gain
- Pseudo differential outputs relative to REFGND
- Buffered voltage outputs
Output voltage span of 3.5 V × VREF(+)
Maximum output voltage span of 17.5 V - Clear function to user-defined REFGND (CLR pin)
- Simultaneous update of DAC outputs (LDAC pin)
- See datasheet for additional features
The AD5378 contains 32 14-bit DACs in one CSPBGA package. The AD5378 provides a bipolar output range determined by the voltages applied to the VREF(+) and VREF(−) inputs. The maximum output voltage span is 17.5 V, corresponding to a bipolar output range of −8.75 V to +8.75 V, and is achieved with reference voltages of VREF(−) = −3.5 V and VREF(+) = +5 V.
The AD5378 guarantees operation over a wide VSS/VDD supply range from ±11.4 V to ±16.5 V. The output amplifier headroom requirement is 2.5 V operating with a load current of 1.5 mA, and 2 V operating with a load current of 0.5 mA.
The AD5378 contains a double-buffered parallel interface in which 14 data bits are loaded into one of the input registers under the control of the WR, CS, and DAC channel address pins, A0 to A7. It also has a 3-wire serial interface, which is compatible with SPI®, QSPI™, MICROWIRE™, and DSP interface standards and can handle clock speeds of up to 50 MHz.
The DAC outputs are updated when the DAC registers receive new data. All the outputs can be updated simultaneously by taking the LDAC input low. Each channel has a programmable gain and an offset adjust register.
Each DAC output is gained and buffered on-chip with respect to an external REFGND input. The DAC outputs can also be switched to REFGND via the CLR pin. Table 1 and Table 2 show the product portfolio for high channel count bipolar and unipolar voltage output DACs.
APPLICATIONS
- Level setting in automatic test equipment (ATE)
- Variable optical attenuators (VOAs)
- Optical switches
- Industrial control systems
Documentation
Data Sheet 1
Product Highlight 1
Product Highlight 1
Solutions Bulletin & Brochure 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD5378ABCZ | 108-Ball CSPBGA (13mm x 13mm x 1.7mm) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Precision DAC Error Budget Tool
The Precision DAC Error Budget Tool is a web application that calculates the DC Accuracy of precision DAC signal chains. It shows how the static errors accumulate throughout your signal chain to quickly evaluate the design tradeoffs. Calculations include the DC errors introduced by Voltage References, Operation Amplifiers and Precision DACs.
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