AD7450A

PRODUCTION

Differential Input, 1 MSPS, 12- (AD7450A) & 10-Bit (AD7440) ADCs

Data Sheet (Rev. D) Product Selection Table

Part Models: 2
1ku List Price: Starting From $7.16

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Overview

Specified for V_DD of 3 V and 5 V
Low power at max throughput rate
4 mW max at 1 MSPS with 3 V supplies
9.25 mW max at 1 MSPS with 5 V supplies
Fully differential analog input
Wide input bandwidth
70 dB SINAD at 100 kHz input frequency

Fast throughput rate: 1 MSPS
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-lead SOT-23 and MSOP packages

The AD7440 / AD7450A are 10-bit and 12-bit high speed, low power, successive approximation (SAR) analog-to-digital converters with a fully differential analog input. These parts operate from a single 3 V or 5 V power supply and use advanced design techniques to achieve very low power dissipation at throughput rates up to 1 MSPS. The SAR architecture of these parts ensures that there are no pipeline delays.

The parts contain a low noise, wide bandwidth, differential track-and-hold amplifier (T/H) that can handle input frequencies up to 3.5 MHz. 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; the conversion is also initiated at this point. The SAR architecture of these parts ensures that there are no pipeline delays. The AD7440 and the AD7450A use advanced design techniques to achieve very low power dissipation at high throughput rates.

PRODUCT HIGHLIGHTS

Operation with either 3 V or 5 V power supplies.
High throughput with low power consumption.
With a 3 V supply, the AD7440 / AD7450A offer 4 mW max power consumption for 1 MSPS throughput.
Fully differential analog input.
Flexible power/serial clock speed management.
The conversion rate is determined by the serial clock, allowing the power to be reduced as the conversion time is reduced through the serial clock speed increase. These parts also feature a shutdown mode to maximize power efficiency at lower throughput rates.
Variable voltage reference input.
No pipeline delay.
Accurate control of the sampling instant via a CS input and once-off conversion control.
ENOB > eight bits typically with 100 mV reference.

APPLICATIONS

Transducer interface
Battery-powered systems
Data acquisition systems
Portable instrumentation
Motor control

MICROWIRE is a trademark of National Semiconductor Corporation. SPI and QSPI are trademarks of Motorola, Inc.

Part Models: 2
1ku List Price: Starting From $7.16

Documentation

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
AD7450ABRMZ	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD7450ABRTZ-REEL7	8-Lead SOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Mar 22, 2021 - 21_0001 Addition of Amkor Philippines as an Alternate Site for Singulated MSOP and MSOP_EP
		PCN21_0001_Form Material_Report Other Qualification Results Summary
AD7450ABRMZ	PRODUCTION
Jan 5, 2015 - 14_0246 Qualification of ASE Chungli, as an Alternate Assembly Site for Select MSOP Devices
		PCN14_0246_Form Material_Report Detailed Change Description Qualification Results Summary
AD7450ABRMZ	PRODUCTION
May 15, 2012 - 10_0006 Halogen Free Material Change for mini SOIC Products
		PCN10_0006_Form Material_Report Qualification Report Summary Qualification Report Summary
AD7450ABRMZ	PRODUCTION
Aug 16, 2017 - 16_0291 CANCELLED: Addition of Amkor Philippines as Alternate Assembly Site for 5L, 6L and 8L SOT23 Chip-On-Lead Packages
		PCN16_0291_Form Material_Report Detailed Change Description Qualification Results Summary
AD7450ABRTZ-REEL7	PRODUCTION
Feb 4, 2010 - 10_0009 Halogen Free Material Change for SOT_23 Products
		Material_Report PCN10_0009_Form SOT23 Qualification Data
AD7450ABRTZ-REEL7	PRODUCTION	Material_Report PCN10_0009_Form SOT23 Qualification Data

This is the most up-to-date revision of the Data Sheet.

Software Resources

Device Drivers 2

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Differential Amplifiers 1
ADA4940-1	PRODUCTION	Ultralow Power, Low Distortion ADC Driver
Operational Amplifiers (Op Amps) 2
AD8655	PRODUCTION	Low Noise, Precision CMOS Amplifier
AD8656	PRODUCTION	Low Noise, Precision CMOS Dual Amplifier
Voltage References 5
ADR421	PRODUCTION	Ultraprecision, Low Noise, 2.500 V XFET® Voltage References

ADR441	PRODUCTION	Ultralow Noise, LDO XFET^® 2.5V Voltage Reference w/Current Sink and Source
AD780	PRODUCTION	2.5 V/3.0 V High Precision Reference
ADR420	PRODUCTION	Ultraprecision, Low Noise, 2.048 V XFET^® Voltage Reference
ADR440	PRODUCTION	Ultralow Noise, LDO XFET^® 2.048V Voltage Reference w/Current Sink and Source

Evaluation Kits

AD7450A Evaluation Board

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Product Details

The EVAL-AD7450ASDZ is a fully featured evaluation kit for the AD7450. This board operates in standalone mode or in conjunction with the System Development Platform, EVAL-SDP-CB1Z . When operated with the System Development Platform software is provided enabling the user to perform detailed analysis of the ADC's performance. This software includes the technical note describing the operation and set up of the evaluation board in standalone operation or when operated with the System Development Platform . When operated in standalone mode the ADZS-BRKOUT-EX3 break out board is recommended for access to various control pins.

This board can also be used to text the AD7440 generic

The SDP Controller board is a separate list item in the ordering guide below (EVAL-SDP-CB1Z). If you have not previously purchased an SDP Controller board, please do so to ensure a full evaluation setup.