AD7866

PRODUCTION

Dual 1MSPS, 12-Bit, 2-Channel SAR ADC with Serial Interface

Data Sheet (Rev. A) Product Selection Table

Part Models: 6
1ku List Price: Starting From $8.03

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Overview

Dual 12-Bit, 2-Channel ADC
Fast Throughput Rate 1 MSPS
Specified for V_DD of 2.7 V to 5.25 V
Low Power:
11.4 mW Max at 1 MSPS with 3 V Supplies
24 mW Max at 1 MSPS with 5 V Supplies
Wide Input Bandwidth
70 dB SNR at 300 kHz Input Frequency

Onboard Reference 2.5 V
Flexible Power/Throughput Rate Management
Simultaneous Conversion/Read
No Pipeline Delays
High-Speed Serial Interface SPI^®/QSPI^™/ MICROWIRE^™/DSP Compatible
Shut-Down Mode: µA Max
20-Lead TSSOP Package

The AD7866 is a dual 12-bit high-speed, low power, successive-approximation ADC. The part operates from a single 2.7 V to 5.25 V power supply and features throughput rates up to 1 MSPS. The device contains two ADCs, each preceded by a low-noise, wide bandwidth track/hold amplifier, which can handle input frequencies in excess of 10 MHz.

The conversion process and data acquisition are controlled using standard control inputs allowing easy interfacing to microprocessors or DSPs. The input signal is sampled on the falling edge of CS and conversion is also initiated at this point. The conversion time is determined by the SCLK frequency. There are no pipelined delays with the part.

The AD7866 uses advanced design techniques to achieve very low power dissipation at high throughput rates. With 3 V supplies and 1 MSPS throughput rate, the part consumes a maximum of 3.8 mA. With 5 V supplies and 1 MSPS, the current consumption is a maximum of 4.8 mA. The part also offers flexible power/throughput rate management when operating in sleep mode.

The analog input range for the part can be selected to be a 0 V to V_REF range or a 2 × V_REF range with either straight binary or twos complement output coding. The AD7866 has an on-chip 2.5 V reference that can be overdriven if an external reference is preferred. Each on-board ADC can also be supplied with a separate individual external reference.

The AD7866 is available in a 20-lead thin shrink small outline (TSSOP) package.

PRODUCT HIGHLIGHTS

The AD7866 features two complete ADC functions, allowing simultaneous sampling and conversion of two channels. Each ADC has a 2-channel input multiplexer. The conversion result of both channels is available simultaneously on separate data lines, or may be taken on one data line if only one serial port is available.
High Throughput with Low Power Consumption—The AD7866 offers a 1 MSPS throughput rate with 11.4 mW maximum power consumption when operating at 3 V.
Flexible Power/Throughput Rate Management—The conversion rate is determined by the serial clock, allowing the power consumption to be reduced as the conversion time is reduced through a SCLK frequency increase. Power efficiency can be maximized at lower throughput rates if the part enters sleep during conversions.
No Pipeline Delay—The part features two standard successive approximation ADCs with accurate control of the sampling instant via a CS input and once off conversion control.

Part Models: 6
1ku List Price: Starting From $8.03

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
AD7866ARUZ	20-Lead TSSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD7866ARUZ-REEL	20-Lead TSSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD7866ARUZ-REEL7	20-Lead TSSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD7866BRUZ	20-Lead TSSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD7866BRUZ-REEL	20-Lead TSSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD7866BRUZ-REEL7	20-Lead TSSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Apr 5, 2021 - 21_0035 Amkor Philippines as an Alternate Site for TSSOP_4.4
		PCN21_0035_Form Material_Report Qualification Results Summary Other
AD7866ARUZ	PRODUCTION
AD7866ARUZ-REEL	PRODUCTION
AD7866ARUZ-REEL7	PRODUCTION
AD7866BRUZ	PRODUCTION
AD7866BRUZ-REEL	PRODUCTION
AD7866BRUZ-REEL7	PRODUCTION
Jul 23, 2014 - 13_0241 Qualification of ASE Chungli as an Alternate Assembly Site for Select 16L, 20L and 24L TSSOP Packages
		PCN13_0241_Form Material_Report Detailed Change Description Qualification Results Summary Qualification Results Summary
AD7866ARUZ	PRODUCTION
AD7866ARUZ-REEL	PRODUCTION
AD7866ARUZ-REEL7	PRODUCTION
AD7866BRUZ	PRODUCTION
AD7866BRUZ-REEL	PRODUCTION
AD7866BRUZ-REEL7	PRODUCTION
Jan 20, 2012 - 11_0218 Halogen Free Material Change for Certain TSSOP Products at Carsem
		PCN11_0218_Form Material_Report Qualification Report Summary
AD7866ARUZ	PRODUCTION
AD7866ARUZ-REEL	PRODUCTION
AD7866ARUZ-REEL7	PRODUCTION
AD7866BRUZ	PRODUCTION
AD7866BRUZ-REEL	PRODUCTION
AD7866BRUZ-REEL7	PRODUCTION
Feb 8, 2010 - 04_0080 Qualification of the 8" C6 and Q Wafer Fab Processes at Analog Devices, Limerick, Ireland.
		PCN04_0080_Form Material_Report Reliability Report Reliability Report
AD7866ARUZ	PRODUCTION
AD7866ARUZ-REEL7	PRODUCTION

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

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Tools & Simulations

IBIS Model 1

AD7866 IBIS Model

Evaluation Kits

AD7866 Evaluation Board

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Product Details

The EVAL-AD7866CBZ is a fully featured evaluation kit for the AD7866. This board operates in stand alone mode or in conjunction with the Evaluation Controller board . When operated with the Evaluation Controller board, 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 Evaluation Controller board.