Features Internal Sample-and-Hold Single +5V Operation Low Power Standby Mode Guaranteed No Missing Codes Tri-State Outputs TTL/CMOS or 3V Logic Input/Output Compatible Description The ADC10321 is a low power, high performance CMOS analog-to-digital converter that digitizes signals to 10 bits resolution at sampling rates up to 25Msps while consuming a typical 98mW from a single 5V supply. Reference force and sense pins allow the user to connect an external reference buffer amplifier to ensure optimal accuracy. No missing codes is guaranteed over the full operating temperature range. The unique two stage architecture achieves 9.2 Effective Bits with a 10MHz input signal and a 20MHz clock frequency. Output formatting is straight binary coding. To ease interfacing to 3V systems, the digital I/O power pins of the ADC10321 can be tied to a 3V power source, making the outputs 3V compatible. When not converting, power consumption can be reduced by pulling the PD (Power Down) pin high, placing the converter into a low power standby state, where it typically consumes less than 4mW. The ADC10321's speed, resolution and single supply operation makes it well suited for a variety of applications in video, imaging, communications, multimedia and high speed data acquisition. Low power, single supply operation ideally suit the ADC10321 for high speed portable applications, and its speed and resolution are ideal for charge coupled device (CCD) input systems. The ADC10321 comes in a space saving 32-pin TQFP and operates over the industrial (-40°C <= TA <= +85°C) temperature range. Key Specification Resolution 10 Bits Conversion Rate 20 Msps ENOB@ 10MHz Input 9.2 Bits (typ) DNL 0.35 LSB (typ) Conversion Latency 2 Clock Cycles PSRR 56dB Power Consumption 98mW (typ) Low Power Standby Mode <4mW (typ) Applications Digital Video Communications Document Scanners Medical Imaging Electro-Optics Plain Paper Copiers CCD Imaging

Also Recommended ADC10D020▲ Dual ADC10030▲ Higher Speed (30 Msps)

	Block Diagram click for larger image
Typical Performance click for larger image

Datasheets

Title		Size	Date	Other Language
	ADC10321 10-Bit, 20MSPS, 98mW A/D Converter with Internal Sample and Hold	432 Kbytes	7-Jan-03	日本語

Other Technical Documents

Title		Type	Date
	How To Ground Mixed-Signal Circuits Properly	External Article	2003-10-27
	Maintaining Signal Integrity Enhances ADC Circuit Performance	External Article	2000-05-01

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
ADC10321CIVT/NOPB ADC10321CIVT RoHS Status	LQFP	Full production Lead Time: 6 weeks	Distributor Region Qty AVNET-EM Worldwide 250 DIGI-KEY Worldwide 0	$3.68 each at 1K+ pcs	tray of 250

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 ADC10321.

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 ADC10321 is located at RoHS Status.

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
ADC10321CIVT/NOPB ADC10321CIVT	181.501 182.012	LQFP	32	3 3	260 260	Detail	Download	N/A	NS2ZXYTT ADC10321 CIVT

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 ADC10321.

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 ADC10321 is located at RoHS Status.

Design Tools

Title	Size	Date
Evaluation Boards & Development Systems

CAD Symbols and Models Download ADC10321 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
ADC10321CIVT	.5	0	14595	0	0	1045000	4	296521603

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 ADC10321.

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 ADC10321 is located at RoHS Status.