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AD7452:  Differential Input, 555 kSPS, 12-Bit A/D Converter in 8-Lead SOT-23

Product Details

The AD7452 is a 12- bit, low power, successive-approximation (SAR) analog-to-digital converter that features a fully differential analog input. This part operates from a single 3 V or 5 V power supply and features throughput rates up to 555 kSPS.

The part contains a low-noise, wide bandwidth, differential track and hold amplifier (T/H), which can handle input frequencies in excess of 1 MHz with the -3 dB point being 20 MHz typically. The reference voltage is applied externally to the VREF pin and can be varied from 100 mV to 3.5 V depending on the power supply and what suits the application. The value of the reference voltage determines the common mode voltage range of the part. With this truly differential input structure and variable reference input, the user can select a variety of input ranges and bias points.

The conversion process and data acquisition are controlled using CS and the serial clock allowing the device to interface with Microprocessors or DSPs. The input signals are sampled on the falling edge of CS and the conversion is also initiated at this point.

The SAR architecture of this part ensures that there are no pipeline delays.

The AD7452 uses advanced design techniques to achieve very low power dissipation at high throughput rates.


  • Specified for VDD of 3 V and 5V
  • Low Power at max Throughput Rate:
    - 7.25 mW max at 555 kSPS with 5 V Supplies
    - 3.3 mW max at 555 kSPS with 3 V Supplies
  • Fully Differential Analog Input
  • Wide Input Bandwidth:
    - 70 dB SINAD at 100 kHz Input Frequency
  • Flexible Power/Serial Clock Speed Management
  • No Pipeline Delays
  • High Speed Serial Interface SPI®/QSPI™/MICROWIRE™/DSP Compatible
  • Power-Down Mode: 1 µA max
  • 8 Pin SOT-23 Package

Functional Block Diagram for AD7452

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Title Content Type File Type
AD7452: Differential Input, 555 kSPS, 12-Bit ADC in an 8-Lead SOT-23 Data Sheet (Rev B, 02/2004) (pdf, 657 kB) Data Sheets PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
Maximize Performance When Driving Differential ADCs
... Converting a single-ended signal to a differential signal before the analog-to-digital conversion can improve the performance of your data-acquisition system. By Sally Paterson, Analog Devices (EDN, 6/12/2003)
Technical Articles HTML
8- to 18-Bit SAR ADCs ... From the Leader in High Performance Analog  (pdf, 1885 kB)
8- to 18-Bit SAR ADCs with Sample Rates up to 3 MSPS -- The latest additions to ADI’s ADC portfolio offer unrivaled functionality in terms of channel count and power supply voltage, optimal power/speed ratios, and the smallest packages to meet the demands of any data acquisition application, including portable, industrial, medical, wireless, and communications.
Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

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.

Product Recommendations & Reference Designs

Companion Products

Suggested Companion Products

Recommended Driver Amplifiers for the AD7452

  • For ultra low distortion, low power differential amplifier, we recommend the ADA4940-1.
  • For low noise, low cost, precision amplifier, we recommend the AD8655 or the dual AD8656.
Recommended Precision Voltage References for the AD7452
  • For a 2.5V/3V reference, we recommend the AD780.
  • For a 2.5V reference, we recommend the ADR421 or the ADR441.
  • For a 2.048V reference, we recommend the ADR420 or the ADR440.
Recommended Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.

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Price, packaging, availability

AD7452 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
AD7452BRTZ-R2 Status: Production 8 ld SOT-23 8 Ind Reel, 250 $3.51 $3.51 Y  Material Info PCN Purchase
AD7452BRTZ-REEL7 Status: Production 8 ld SOT-23 8 Ind Reel, 3000 - $2.99 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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