Features True Simultaneous Sampling Differential Inputs Guaranteed performance from 500 kSPS to 1 MSPS External Reference Wide Input Common-Mode Voltage Range Single or Dual High-Speed Serial Data Outputs Operating Temperature Range of −40°C to +105°C SPI™/QSPI™/MICROWIRE™/DSP compatible Serial Interface Description The ADC122S706 is a dual 12-bit, 500 kSPS to 1 MSPS simultaneous sampling Analog-to-Digital (A/D) converter. The analog inputs on both channels are sampled simultaneously to preserve their relative phase information to each other. The converter is based on a successive-approximation register architecture where the differential nature of the analog inputs is maintained from the internal track-and-hold circuits throughout the A/D converter to provide excellent common-mode signal rejection. The ADC122S706 features an external reference that can be varied from 1.0V to VA. The ADC122S706 offers dual high-speed serial data outputs that are binary 2's complement and are compatible with several standards, such as SPI™, QSPI™, MICROWIRE™, and many common DSP serial interfaces. Channel A's conversion result is outputted on DOUTA while Channel B's conversion result is outputted on DOUTB. This feature makes the ADC122S706 an excellent replacement for systems using two distinct ADCs in a simultaneous sampling application. The serial clock (SCLK) and chip select bar ( ^CS) are shared by both channels. For lower power consumption, a single serial data output mode is externally selectable. The ADC122S706 may be operated with independent analog (VA) and digital (VD) supplies. VA can range from 4.5V to 5.5V and VD can range from 2.7V to VA. With the ADC122S706 operating with a VA of 5V and a VD of 3V, the power consumption at 1 MSPS is typically 25 mW. Operating in power-down mode, the power consumption of the ADC122S706 decreases to 3 µW. The differential input, low power consumption, and small size make the ADC122S706 ideal for direct connection to sensors in motor control applications. Operation is guaranteed over the industrial temperature range of −40°C to +105°C and clock rates of 8 MHz to 16 MHz. The ADC122S706 is available in a 14-lead TSSOP package. Key Specification Conversion Rate 500 kSPS to 1 MSPS INL ±1 LSB (max) DNL ±0.95 LSB (max) SNR 71 dBc (min) THD -72 dBc (min) ENOB 11.25 bits (min) Power Consumption at 1 MSPS  Converting, VA = 5V, VD = 3V 20 mW (typ)  Converting, VA = 5V, VD = 5V 25 mW (typ)  Power-Down 3 µW (typ) Applications Motor Control Power Meters/Monitors Multi-Axis Positioning Systems Instrumentation and Control Systems Data Acquisition Systems Medical Instruments Direct Sensor Interface

applic diagram

Typical Application click for larger image applic diagram	Block Diagram click for larger image
Typical Performance click for larger image typical DNL plot

Parameters Values Pin and Function Compatible Family None Resolution 12 bits Input Channels 2 Sample Rate Range (sps) 500ksps - 1Msps Interface Type SPI/QSPI/Microwire Differential Input Yes Power Down, typ. at 3.6V 3.1 uW Operating Power, typ at 3.6V, max ksps 0.023 mW Operating Power, 3.6V, 1ksps, max. PwrDn 20.0 mW PowerWise Rating 1 4.11 pJ/conv INL (LSB) +/-1 DNL (LSB) +/-0.95 ENOB 11.25 bits SINAD 69.5 dB SNR 71 dB Max KSample Rate 1000 ksps Min Supply Voltage 4.5 Volt Max Supply Voltage 5.5 Volt Reference Source External Temperature Min -40 deg C Temperature Max 105 deg C Power Down Yes Input Sample/Hold Yes Special Features Split Supply Data Converter Type ADC Max Sample Rate 1 MSPS Automotive Yes

Datasheets

Title		Size	Date	Other Language
	ADC122S706 Dual 12-Bit, 500 kSPS to 1 MSPS, Simultaneous Sampling A/D Converter	563 Kbytes	16-Nov-07	日本語

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
ADC122S706CIMT/NOPB RoHS Status	TSSOP	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 38 AVNET-EM Worldwide 114 DIGI-KEY Worldwide 94 FARNELL Europe and Asia 241 MOUSER Worldwide 44 RS COMPONENTS Worldwide 69 TAYLOR Americas 38	$3.44 each at 1K+ pcs	rail of 94

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for ADC122S706.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for ADC122S706 is located at RoHS Status.

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
ADC122S706EB	ADC122S706 Dual 12-Bit, 500 kSPS to 1 MSPS, Simultaneous Sampling A/D Converter	Full production	Distributor Region Qty DIGI-KEY Worldwide 0 MOUSER Worldwide 2 TAYLOR Americas 3	$120.00 each	1
Description: The ADC122S706EB features a dual 12-bit, 500kSPS to 1MSPS simultaneous sampling Analog-to-Digital (A/D) converter. The ADC122S706EB can be used in manual or computer mode. In manual mode, a pattern generator or controller is used to interface with the ADC122S706. In order to interface this board to a PC, a WaveVision (WV) Data Capture Board, version 4.1 or higher, is required. The WV Data Capture Board requires WaveVision software version 4.4 or higher for the ADC122S706EB to be recognized automatically by the WV software. Features: True Simultaneous Sampling Differential Inputs Guaranteed performance from 500kSPS to 1MSPS External Reference Wide Input Common-Mode Voltage Range Operating Temperature Range of -40°C to 105°C Single or Dual High-Speed Serial Data Outputs 14-Lead TSSOP Contents: Evaluation Board User`s Guide

National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

Lead Free product status is available through the search tool located here

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
ADC122S706CIMT/NOPB	53.783 54.004	TSSOP	14	1	260	Detail	Download	N/A	NSUZXYTT 2S706 CIMT

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for ADC122S706.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for ADC122S706 is located at RoHS Status.

CAD Symbols and Models Download ADC122S706 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
ADC122S706CIMT	CMOS7	0	21301	0	0	1584000	3	449464325

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for ADC122S706.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for ADC122S706 is located at RoHS Status.

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