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Features
- Four On-Chip Track/Hold Amplifiers
- Simultaneous Sampling of 4 Channels
- Fast 12-Bit ADC with 8 µs Conversion Time/Channel
- 29 kHz Sample Rate for All Four Channels
- On-Chip Reference
- ±10 V Input Range
- ±5 V Supplies
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The AD7874 is a four-channel simultaneous sampling, 12-bit data acquisition system. The part contains a high speed 12-bit ADC, on chip reference, on-chip clock and four track/hold amplifiers. This latter feature allows the four input channels to be sampled simultaneously, thus preserving the relative phase information of the four input channels, which is not possible if all four channels share a single track/hold amplifier. This makes the AD7874 ideal for applications such as phased-array sonar and ac motor controllers where the relative phase information is important.
The aperture delay of the four track/hold amplifiers is small and specified with minimum and maximum limits. This allows several AD7874s to sample multiple input channels simultaneously without incurring phase errors between signals connected to several devices. A reference output/reference input facility also allows several AD7874s to be driven from the same reference source.
In addition to the traditional dc accuracy specifications such as linearity, full-scale and offset errors, the AD7874 is also fully specified for dynamic performance parameters including distortion and signal-to-noise ratio.
The AD7874 is fabricated in Analog Devices' Linear Compatible CMOWS (LC2MOS) process, a mixed technology process that combines precision bipolar circuits with low-power CMOS logic. The part is available in a 28-pin, 0.6" wide, plastic or hermetic dual-in-line package (DIP), in a 28-terminal leadless ceramic chip carrier (LCCC) and in a 28-pin SOIC.
PRODUCT HIGHLIGHTS
- Simultaneous Sampling of Four Input Channels.
Four input channels, each with its own track/hold amplifier, allow simultaneous sampling of input signals. Track/hold acquisition time is 2 µs, and the conversion time per channel is 8 µs, allowing 29 kHz sample rate for all four channels. - Tight Aperture Delay Matching.
The aperture delay for each channel is small and the aperture delay matching between the four channels is less than 4 ns. Additionally, the aperture delay specification has upper and lower limits allowing multiple AD7874s to sample more than four channels. - Fast Microprocessor Interface.
The high speed digital interface of the AD7874 allows direct connection to all modern 16-bit microprocessors and digital signal processors.
APPLICATIONS
- Sonar
- Motor Controllers
- Adaptive Filters
- Digital Signal Processing
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AD7874
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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.
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Product Lifecycle
PCN
Apr 9, 2018
- 16_0026
Qualify TeamQuest Technology, Inc. for Burn-in and Life Test of Military and Aerospace Devices
5962-9152101M3A
5962-9152101MXA
Nov 9, 2011
- 11_0050
Transfer of ADI Hermetics Assembly location from Paranaque, Manila to General Trias, Cavite Philippines
5962-9152101M3A
5962-9152101MXA
AD7874AQ
AD7874BQ
AD7874SE
AD7874SQ
Nov 9, 2011
- 11_0182
Test Site Transfer from Analog Devices Philippines Inc in Paranaque to Analog Devices General Trias in Cavite, Philippines
5962-9152101M3A
5962-9152101MXA
AD7874AQ
AD7874BQ
AD7874SE
AD7874SQ
Feb 3, 2009
- 08_0001
Qualification of 8" 3um BiCMOS wafer fab process at Analog Devices, Limerick, Ireland.
5962-9152101M3A
5962-9152101MXA
AD7874ACHIPS
AD7874ANZ
PRODUCTION
AD7874AQ
AD7874ARZ
PRODUCTION
AD7874ARZ-REEL
PRODUCTION
AD7874ARZ-REEL7
PRODUCTION
AD7874BNZ
PRODUCTION
AD7874BQ
AD7874BRZ
PRODUCTION
AD7874SE
AD7874SQ
Nov 7, 2012
- 12_0199
Qualification of New Conductive Silver-Filled Glass Die Attach Adhesive for Cerdip and Ceramic Flatpack (Cerpack) Packages.
5962-9152101MXA
AD7874AQ
AD7874BQ
AD7874SQ
Feb 1, 2010
- 10_0020
Test Solutions Services, Inc.(TSSI) as Subcontractor Burn-in Facility.
5962-9152101MXA
Mar 7, 2019
- 19_0046
Assembly Transfer of 18,20,24,28 Lead PDIP to Cirtek
AD7874ANZ
PRODUCTION
AD7874BNZ
PRODUCTION
Aug 19, 2009
- 07_0024
Package Material Changes for SOT23, MiniSO, MQFP, PDIP, PLCC, SOIC (narrow and wide body), SSOP, TSSOP and TSSOP exposed pad
AD7874ANZ
PRODUCTION
AD7874BNZ
PRODUCTION
Feb 7, 2011
- 10_0003
Halogen Free Material Change for SOIC Wide Body Products Assembled at Amkor
AD7874ARZ
PRODUCTION
AD7874ARZ-REEL
PRODUCTION
AD7874ARZ-REEL7
PRODUCTION
AD7874BRZ
PRODUCTION
Filter by Model
Part Models
Product Lifecycle
PCN
Apr 9, 2018
- 16_0026
Qualify TeamQuest Technology, Inc. for Burn-in and Life Test of Military and Aerospace Devices
5962-9152101M3A
5962-9152101MXA
Nov 9, 2011
- 11_0050
Transfer of ADI Hermetics Assembly location from Paranaque, Manila to General Trias, Cavite Philippines
5962-9152101M3A
5962-9152101MXA
AD7874AQ
AD7874BQ
AD7874SE
AD7874SQ
Nov 9, 2011
- 11_0182
Test Site Transfer from Analog Devices Philippines Inc in Paranaque to Analog Devices General Trias in Cavite, Philippines
5962-9152101M3A
5962-9152101MXA
AD7874AQ
AD7874BQ
AD7874SE
AD7874SQ
Feb 3, 2009
- 08_0001
Qualification of 8" 3um BiCMOS wafer fab process at Analog Devices, Limerick, Ireland.
5962-9152101M3A
5962-9152101MXA
AD7874ACHIPS
AD7874ANZ
PRODUCTION
AD7874AQ
AD7874ARZ
PRODUCTION
AD7874ARZ-REEL
PRODUCTION
AD7874ARZ-REEL7
PRODUCTION
AD7874BNZ
PRODUCTION
AD7874BQ
AD7874BRZ
PRODUCTION
AD7874SE
AD7874SQ
Nov 7, 2012
- 12_0199
Qualification of New Conductive Silver-Filled Glass Die Attach Adhesive for Cerdip and Ceramic Flatpack (Cerpack) Packages.
5962-9152101MXA
AD7874AQ
AD7874BQ
AD7874SQ
Feb 1, 2010
- 10_0020
Test Solutions Services, Inc.(TSSI) as Subcontractor Burn-in Facility.
Mar 7, 2019
- 19_0046
Assembly Transfer of 18,20,24,28 Lead PDIP to Cirtek
AD7874ANZ
PRODUCTION
AD7874BNZ
PRODUCTION
Aug 19, 2009
- 07_0024
Package Material Changes for SOT23, MiniSO, MQFP, PDIP, PLCC, SOIC (narrow and wide body), SSOP, TSSOP and TSSOP exposed pad
AD7874ANZ
PRODUCTION
AD7874BNZ
PRODUCTION
Feb 7, 2011
- 10_0003
Halogen Free Material Change for SOIC Wide Body Products Assembled at Amkor
AD7874ARZ
PRODUCTION
AD7874ARZ-REEL
PRODUCTION
AD7874ARZ-REEL7
PRODUCTION
AD7874BRZ
PRODUCTION
