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AD7858:  3 V to 5 V Single Supply, 200 kSPS, 8-Channel, 12-Bit, Serial Sampling ADC

Product Details


The AD7858/AD7858L are high speed, low power, 12-bit ADCs that operate from a single 3 V or 5 V power supply, the AD7858 being optimized for speed and the AD7858L for low power. The ADC powers up with a set of default conditions at which time it can be operated as a read only ADC. The ADC contains self-calibration and system calibration options to ensure accurate operation over time and temperature and have a number of power-down options for low power applications. The part powers up with a set of default conditions and can operate as a read only ADC.

The AD7858 is capable of 200 kHz throughput rate while the AD7858L is capable of 100 kHz throughput rate. The input track-and-hold acquires a signal in 500 ns and features a pseudo-differential sampling scheme. The AD7858/AD7858L voltage range is 0 to VREF with both straight binary and 2s complement output coding. Input signal range is to the supply and the part is capable of converting full power signals to 100 kHz.

CMOS construction ensures low power dissipation of typically 5.4 mW for normal operation and 3.6 µW in power-down mode. The part is available in 24-pin, 0.3 inch-wide dual-in-line package (DIP), 24-lead small outline (SOIC) and 24-lead small shrink outline (SSOP) packages.

FEATURES and BENEFITS

  • Specified for VDD of 3 V to 5.5 V
  • System and Self-Cal with Autocal on Power-Up
  • Eight Single-Ended or Four Pseudo-Differential Inputs
  • Low Power: 12 mW/AD7858, 4.5 mW/AD7858L
  • Automatic Power-Down After Conversion (25 µW)

Functional Block Diagram for AD7858

Documentation

Title Content Type File Type
AD7858/AD7858L: 3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit Sampling ADC Data Sheet  (Rev B, 06/2000) (pdf, 315 kB) Data Sheets PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
Low-Power, Low-Voltage IC Choices for ECG System Requirements
(Analog Dialogue, Vol. 29, No. 3, 1995)
Technical Articles HTML
Low-Power, Low-Voltage IC Choices for ECG System Requirements
(Analog Dialogue, Vol. 29, No. 3, 1995)
Analog Dialogue HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

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Price, packaging, availability

AD7858 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD7858AN Status: Production 24 ld PDIP 24 Comm. Tube, 15 $14.34 $12.19 N  Material Info PCN Purchase
AD7858ANZ Status: Production 24 ld PDIP 24 Comm. Tube, 15 $12.42 $10.56 Y  Material Info PCN Purchase
AD7858AR Status: Production 24 ld SOIC - Wide 24 Comm. Tube, 31 $13.27 $11.29 N  Material Info PCN Purchase
AD7858AR-REEL Status: Contact ADI 24 ld SOIC - Wide 24 Comm. Reel, 1000 - - N  Material Info PCN Contact ADI
AD7858ARZ Status: Production 24 ld SOIC - Wide 24 Comm. Tube, 31 $11.49 $9.77 Y  Material Info PCN Purchase
AD7858ARZ-REEL Status: Production 24 ld SOIC - Wide 24 Comm. Reel, 1000 - $9.77 Y  Material Info PCN Purchase
AD7858BR Status: Production 24 ld SOIC - Wide 24 Comm. Tube, 31 $16.95 $14.41 N  Material Info PCN Purchase
AD7858BRZ Status: Production 24 ld SOIC - Wide 24 Comm. Tube, 31 $15.40 $13.10 Y  Material Info PCN Purchase
AD7858BRZ-REEL Status: Production 24 ld SOIC - Wide 24 Comm. Reel, 1000 - $13.10 Y  Material Info PCN Purchase
AD7858LANZ Status: Production 24 ld PDIP 24 Comm. Tube, 15 $9.36 $7.97 Y  Material Info PCN Purchase
AD7858LARS Status: Production 24 ld SSOP 24 Comm. Tube, 59 $9.53 $8.10 N  Material Info PCN Purchase
AD7858LARS-REEL Status: Production 24 ld SSOP 24 Comm. Reel, 1500 - $8.10 N  Material Info PCN Purchase
AD7858LARSZ Status: Production 24 ld SSOP 24 Comm. Tube, 59 $8.25 $7.01 Y  Material Info PCN Purchase
AD7858LARSZ-REEL Status: Production 24 ld SSOP 24 Comm. Reel, 1500 - $7.01 Y  Material Info PCN Purchase
AD7858LARZ Status: Production 24 ld SOIC - Wide 24 Comm. Tube, 31 $8.25 $7.01 Y  Material Info PCN Purchase
AD7858LARZ-REEL Status: Production 24 ld SOIC - Wide 24 Comm. Reel, 1000 - $7.01 Y  Material Info PCN Purchase
AD7858LBR-REEL Status: Last Time Buy 24 ld SOIC - Wide 24 Comm. Reel, 1000 - $9.49 N  Material Info PCN/PDN Purchase
AD7858LBRZ Status: Production 24 ld SOIC - Wide 24 Comm. Tube, 31 $11.16 $9.49 Y  Material Info PCN Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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