Features 1 GHz Full Power Bandwidth Internal reference and sample-and-hold circuit Low power consumption Data Ready output clock Clock Duty Cycle Stabilizer Single +3.0V or +3.3V supply operation Power-down mode 32-pin LLP package, (5x5x0.8mm, 0.5mm pin-pitch) Description The ADC12C105 is a high-performance CMOS analog-to-digital converter capable of converting analog input signals into 12-bit digital words at rates up to 105 Mega Samples Per Second (MSPS). This converter uses a differential, pipelined architecture with digital error correction and an on-chip sample-and-hold circuit to minimize power consumption and the external component count, while providing excellent dynamic performance. A unique sample-and-hold stage yields a full-power bandwidth of 1 GHz. The ADC12C105 may be operated from a single +3.0V or +3.3V power supply and consumes low power. A separate +2.5V supply may be used for the digital output interface which allows lower power operation with reduced noise. A power-down feature reduces the power consumption to very low levels while still allowing fast wake-up time to full operation. The differential inputs accept a 2V full scale differential input swing. A stable 1.2V internal voltage reference is provided, or the ADC12C105 can be operated with an external 1.2V reference. Output data format (offset binary versus 2's complement) and duty cycle stabilizer are pin-selectable. The duty cycle stabilizer maintains performance over a wide range of clock duty cycles. The ADC12C105 is available in a 32-lead LLP package and operates over the industrial temperature range of −40°C to +85°C. Key Specification Resolution 12 Bits Conversion Rate 105 MSPS SNR (fIN = 240 MHz) 69 dBFS (typ) SFDR (fIN = 240 MHz) 82 dBFS (typ) Full Power Bandwidth 1 GHz (typ) Power Consumption 350 mW (typ), VA=3.0V 400 mW (typ), VA=3.3V Applications High IF Sampling Receivers Wireless Base Station Receivers Test and Measurement Equipment Communications Instrumentation Portable Instrumentation

Also Recommended ADC12C080▲ Pin Compatible, Lower Speed Version Of The ADC12C105 ADC12DC105▲ Dual Channel Version Of The ADC12C105 ADC14C105▲ Pin Compatible, Higher Resolution Version Of The ADC12C105 LMH6515 Low-distortion, High-bandwidth DVGA LMH6552 Low-distortion, High-bandwidth Driver LMK03001 Low-jitter Clock Conditioner With Integrated VCO LP3878-ADJ Low Noise Linear Regulator Application Circuit

Typical Application click for larger image Application Circuit	Block Diagram click for larger image
Typical Performance click for larger image DNL

Parameters / Values	ADC12C105	ADC12C080	ADC12DC105	ADC14C105
Resolution	12 bits	12 bits	12 bits	14 bits
Channels	1 Channels	1 Channels	2 Channels	1 Channels
Max Sample Rate	105 MSPS	80 MSPS	105 MSPS	105 MSPS
Min Supply Voltage	3 Volt	2.7 Volt	2.7 Volt	3 Volt
Max Supply Voltage	3.6 Volt	3.6 Volt	3.6 Volt	3.6 Volt
Power Dissipation	0.4 Watt	0.3 Watt	0.8 Watt	0.4 Watt
Nominal Vin	2 Vpp	2 Vpp	2 Vpp	2 Vpp
INL (+/-)	0.5 LSB	0.5 LSB	0.5 LSB	1.5 LSB
DNL (+/-)	0.25 LSB	0.25 LSB	0.4 LSB	0.5 LSB
ENOB	11.3 bits	11.5 bits	11.3 bits	11.8 bits
SINAD	70 dB	71.1 dB	70 dB	72.8 dB
SNR	70.1 dB	71.2 dB	70.1 dB	73 dB
SFDR	90 dB	90 dB	88 dB	88 dB
Min Sample Rate	20 MSPS	20 MSPS	20 MSPS	20 MSPS
THD dB	-88 dB	-88 dB	-86 dB	-86 dB
PowerWise Rating 1	1.51 pJ/conv	1.29 pJ/conv	1.51 pJ/conv	1.07 pJ/conv
Temperature Min	-40 deg C	-40 deg C	-45 deg C	-40 deg C
Temperature Max	85 deg C	85 deg C	85 deg C	85 deg C
Data Converter Type	ADC	ADC	ADC	ADC
Automotive	Yes	Yes		Yes
PowerWise	Yes	Yes	Yes	Yes

Datasheets

Title		Size	Date	Other Language
	ADC12C105 12-Bit, 105 MSPS A/D Converter	455 Kbytes	22-Aug-07	日本語

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
ADC12C105CISQ/NOPB ADC12C105CISQ RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0 FARNELL Europe and Asia 1 RS COMPONENTS Worldwide 75	$24.00 each at 1K+ pcs	reel of 1000
ADC12C105CISQE/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0 FARNELL Europe and Asia 2	$24.00 each at 1K+ pcs	reel of 250
ADC12C105CISQX RoHS Status	LLP	Full production Lead Time: 16 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$24.00 each at 1K+ pcs	reel of 4500

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 ADC12C105.

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 ADC12C105 is located at RoHS Status.

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
ADC12C105EB/NOPB	ADC12C105 evaluation board	Full production Lead Free (RoHS)	Distributor Region Qty DIGI-KEY Worldwide 0	$420.00 each	1
Description: The ADC12C105EB Design Kit (consisting of the ADC12C105 Evaluation Board and this Users Guide) are designed to ease evaluation and design-in of the National Semiconductor ADC12C105 12-bit Analog-to-Digital Converter, which can operate at speeds up to 105 Msps. The evaluation board can be used in either of two modes. In the Manual mode suitable test equipment, such as a logic analyzer, can be used with the board to evaluate the ADC12C105`s performance. In the Computer Mode this evaluation board is used with National Semiconductor`s WaveVision4 board to capture data and WaveVision software to analyze that data. Features: 1 GHz Full Power Bandwidth Low Power Consumption Internal or External Reference Data Ready Output Clock Contents: Evaluation Board User`s Guide ADC12C105 Datasheet

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
ADC12C105CISQ/NOPB ADC12C105CISQ	60.581 60.793	LLP	32	3 3	260 260	Detail	Download	ibis file	NS UZXYTT 12C105
ADC12C105CISQE/NOPB	60.581	LLP	32	3	260	Detail	Download	N/A	NS UZXYTT 12C105
ADC12C105CISQX		LLP	32			Detail	Download	N/A	NS UZXYTT 12C105

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 ADC12C105.

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 ADC12C105 is located at RoHS Status.

Design Tools

Title	Size	Date
Evaluation Boards & Development Systems

CAD Symbols and Models Download ADC12C105 CAD Symbols

Models ibis file

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
ADC12C105CISQX	CMOS9	1	7912	127	0	1193000	3	338517007

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 ADC12C105.

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 ADC12C105 is located at RoHS Status.