AD7878
CMOS, Complete 12-Bit, 100kHz Sampling ADC with DSP Interface
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Features
- Complete ADC with DSP Interface, Comprising:
- Track/Hold Amplifier with 2 µs Acquisition Time
- 7 µs A/D Converter
- 3 V Zener Reference
- 8-Word FIFO and Interface Logic
- Interfaces to High Speed DSP Processors, e.g., ADSP-2100, TMS32010, TMS32020
- 72 dB SNR at 10 kHz Input Frequency
- 41 ns max Data Access Time
- Low Power, 60 mW typ
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The AD7878 is a fast, complete, 12-bit A/D converter with a versatile DSP interface consisting of an 8-word, first-in, first-out (FIFO) memory and associated control logic.
The FIFO memory allows up to eight samples to be digitized before the microprocessor is required to service the A/D converter. The eight words can then be read out of the FIFO at maximum microprocessor speed. A fast data access time of 41 ns allows direct interfacing to DSP processors and high speed 16-bit microprocessors.
An on-chip status/control register allows the user to program the effective length of the FIFO and contains the FIFO out of range, FIFO empty and FIFO word count information.
The analog input of the AD7878 has a bipolar range of ±3 V. The AD7878 can convert full power signals up to 50 kHz and is fully specified for dynamic parameters such as signal-to-noise ratio and harmonic distortion.
The AD7878 is fabricated in Linear Compatible CMOS (LC2 MOS), an advanced, mixed technology process that combines precision bipolar circuits with low power CMOS logic. The part is available in four package styles, 28-pin plastic and hermetic dual-in-line package (DIP), leadless ceramic chip carrier (LCCC) or plastic leaded chip carrier (PLCC).
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AD7878
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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 |
|---|---|---|---|
| AD7878BQ | 28 ld CerDIP |
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| AD7878SQ | 28 ld CerDIP |
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- AD7878BQ
- Pin/Package Drawing
- 28 ld CerDIP
- Documentation
-
HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
- AD7878SQ
- Pin/Package Drawing
- 28 ld CerDIP
- Documentation
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HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
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Part Models
Product Lifecycle
PCN
Nov 7, 2012
- 12_0199
Qualification of New Conductive Silver-Filled Glass Die Attach Adhesive for Cerdip and Ceramic Flatpack (Cerpack) Packages.
Nov 9, 2011
- 11_0050
Transfer of ADI Hermetics Assembly location from Paranaque, Manila to General Trias, Cavite Philippines
AD7878BQ
AD7878SQ
Nov 9, 2011
- 11_0182
Test Site Transfer from Analog Devices Philippines Inc in Paranaque to Analog Devices General Trias in Cavite, Philippines
AD7878BQ
AD7878SQ
Filter by Model
Part Models
Product Lifecycle
PCN
Nov 7, 2012
- 12_0199
Qualification of New Conductive Silver-Filled Glass Die Attach Adhesive for Cerdip and Ceramic Flatpack (Cerpack) Packages.
Nov 9, 2011
- 11_0050
Transfer of ADI Hermetics Assembly location from Paranaque, Manila to General Trias, Cavite Philippines
Nov 9, 2011
- 11_0182
Test Site Transfer from Analog Devices Philippines Inc in Paranaque to Analog Devices General Trias in Cavite, Philippines
