DDC112 Status: ACTIVE

Dual Current Input 20-Bit Analog-To-Digital Converter

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Datasheet

DDC112: Dual Current Input 20-Bit Analog-To-Digital Converter (Rev. B) (PDF 757 KB) 5688 views
06 Oct 2004

	DDC112	DDC114	DDC118	DDC232	DDC316
Resolution(Bits)	20	20	20	20	16
Sample Rate (max)	3kSPS	3.125kSPS	3.125kSPS	6kSPS	100000SPS
Architecture	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma
Power Consumption(Typ)(mW)	80	54	108	320	540
No Missing Codes(Bits)	20	20	20	20	16
ENOB(Bits)	20	20	20	20	16
No. of Supplies	2	2	2	1	2
Analog Voltage AV/DD(Min)(V)	4.75	4.75	4.75	4.75	4.75
Analog Voltage AV/DD(Max)(V)	5.25	5.25	5.25	5.25	5.25
Logic Voltage DV/DD(Min)(V)	4.75	2.7	2.7	2.7	2.7
Logic Voltage DV/DD(Max)(V)	5.25	5.25	5.25	3.3	3.3
Input Configuration Range	50-1000 pC	12 to 350pC	12.5 to 350pC	12.5 to 350pC	3 to 12pC
Pin/Package	28SOIC, 32TQFP	48QFN	48QFN	64NFBGA	64NFBGA
Comments	Direct connection to photo-diode sensor	Direct connection to photo-diode sensor	Direct connection to photo-diode sensor
Search Sample Rate(Max)(SPS)	3000	3125	3125	6000	100000
# Input Channels		4			16
	Samples	Samples	Samples	Samples	Samples
	Inventory	Inventory	Inventory	Inventory	Inventory

Customers Who Evaluated This Product Also Evaluated

DDC232: 32 Channel Current-Input 20-bit ADC
DDC114: DDC114: Quad Current Input 20-Bit Analog-To-Digital Converter
DDC118: Octal Current-Input 20-Bit Analog-to-Digital Converter
MAX232: Dual EIA-232 Driver/Receiver
TPS2042B: Dual, Current-Limited, Power-Distribution Switches
TPS61070: Adjustable, 600-mA Switch, 90% Efficient PFM/PWM Boost Converter in ThinSOT-23

Product Information

Features

MONOLITHIC CHARGE MEASUREMENT ADC
DIGITAL FILTER NOISE REDUCTION:
3.2ppm, rms
INTEGRAL LINEARITY:
±0.005% Reading ±0.5ppm FSR
HIGH PRECISION,TRUE INTEGRATING FUNCTION
PROGRAMMABLE FULL SCALE
SINGLE SUPPLY
CASCADABLE OUTPUT
APPLICATIONS
- DIRECT PHOTOSENSOR DIGITIZATION
- CT SCANNER DAS
- INFRARED PYROMETER
- PRECISION PROCESS CONTROL
- LIQUID/GAS CHROMATOGRAPHY
- BLOOD ANALYSIS

Protected by US Patent #5841310
All trademarks are the property of their respective owners.

Description

The DDC112 is a dual input, wide dynamic range, charge-digitizing analog-to-digital (A/D) converter with 20-bit resolution. Low-level current output devices, such as photosensors, can be directly connected to its inputs. Charge integration is continuous as each input uses two integrators; while one is being digitized, the other is integrating.

For each of its two inputs, the DDC112 combines current-to-voltage conversion, continuous integration, programmable full-scale range, A/D conversion, and digital filtering to achieve a precision, wide dynamic range digital result. In addition to the internal programmable full-scale ranges, external integrating capacitors allow an additional user-settable full-scale range of up to 1000pC.

To provide single-supply operation, the internal A/D converter utilizes a differential input, with the positive input tied to V_REF. When the integration capacitor is reset at the beginning of each integration cycle, the capacitor charges to V_REF. This charge is removed in proportion to the input current. At the end of the integration cycle, the remaining voltage is compared to V_REF.

The high-speed serial shift register which holds the result of the last conversion can be configured to allow multiple DDC112 units to be cascaded, minimizing interconnections. The DDC112 is available in a SO-28 or TQFP-32 package and is offered in two performance grades.

Pricing / Packaging / CAD Design Tools / Samples

			Price	Packaging			CAD Design Tools		Samples
Device	Status	Temp (^oC)	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Footprints	Samples
DDC112U	ACTIVE	-40 to 85	14.05 \| 1ku	SOIC (DW) \| 28	View	20 \| TUBE
DDC112U/1K	ACTIVE	-40 to 85	12.95 \| 1ku	SOIC (DW) \| 28	View	1000 \| LARGE T&R	Purchase Samples
DDC112U/1KG4	ACTIVE	-40 to 85	12.95 \| 1ku	SOIC (DW) \| 28	View	1000 \| LARGE T&R	Purchase Samples
DDC112UG4	ACTIVE	-40 to 85	14.05 \| 1ku	SOIC (DW) \| 28	View	20 \| TUBE	Contact TI Distributor or Sales Office
DDC112UK	ACTIVE	0 to 70	17.80 \| 1ku	SOIC (DW) \| 28	View	20 \| TUBE
DDC112UK/1K	ACTIVE	0 to 70	16.70 \| 1ku	SOIC (DW) \| 28	View	1000 \| LARGE T&R	Purchase Samples
DDC112UK/1KG4	ACTIVE	0 to 70	16.70 \| 1ku	SOIC (DW) \| 28	View	1000 \| LARGE T&R	Purchase Samples
DDC112UKG4	ACTIVE	0 to 70	17.80 \| 1ku	SOIC (DW) \| 28	View	20 \| TUBE	Contact TI Distributor or Sales Office
DDC112Y/250	ACTIVE	-40 to 85	16.20 \| 1ku	TQFP (PJT) \| 32	View	250 \| SMALL T&R
DDC112Y/250G4	ACTIVE	-40 to 85	16.20 \| 1ku	TQFP (PJT) \| 32	View	250 \| SMALL T&R	Contact TI Distributor or Sales Office
DDC112Y/2K	ACTIVE	-40 to 85	15.20 \| 1ku	TQFP (PJT) \| 32	View	2000 \| LARGE T&R	Purchase Samples
DDC112Y/2KG4	ACTIVE	-40 to 85	15.20 \| 1ku	TQFP (PJT) \| 32	View	2000 \| LARGE T&R	Purchase Samples
DDC112YK/250	ACTIVE	0 to 70	20.25 \| 1ku	TQFP (PJT) \| 32	View	250 \| SMALL T&R	Purchase Samples
DDC112YK/250G4	ACTIVE	0 to 70	20.25 \| 1ku	TQFP (PJT) \| 32	View	250 \| SMALL T&R	Purchase Samples
DDC112YK/2K	ACTIVE	0 to 70	19.25 \| 1ku	TQFP (PJT) \| 32	View	2000 \| LARGE T&R	Purchase Samples
DDC112YK/2KG4	ACTIVE	0 to 70	19.25 \| 1ku	TQFP (PJT) \| 32	View	2000 \| LARGE T&R	Purchase Samples

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

	TI Inventory Status	Reported Distributor Inventory
DDC112U	As of 11:30 AM GMT, 03 Jul 2009	As of 11:30 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	4 Weeks	Americas	Arrow	270
			DigiKey	>1k
			Mouser Electronics	11
			Rochester Electronics	9
		Europe	Abacus Polar	190
			Arrow Southern Europe	100
			Compel	44
DDC112U/1K	As of 11:30 AM GMT, 03 Jul 2009	As of 11:30 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	6 Weeks	Americas	DigiKey	Available
DDC112U/1KG4	As of 11:30 AM GMT, 03 Jul 2009	As of 11:30 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	6 Weeks	Americas	DigiKey	Available
DDC112UG4	As of 11:30 AM GMT, 03 Jul 2009	As of 11:30 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	4 Weeks	Americas	DigiKey	Available
DDC112UK	As of 11:30 AM GMT, 03 Jul 2009	As of 11:30 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	1 Week	Americas	Avnet	15
			DigiKey	160
			Mouser Electronics	20
			Rochester Electronics	>1k
		Europe	Farnell	18
DDC112UK/1K	As of 11:30 AM GMT, 03 Jul 2009	As of 11:30 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	4 Weeks	Americas	DigiKey	Available
	4 Weeks	Americas	Rochester Electronics	700
DDC112UK/1KG4	As of 11:30 AM GMT, 03 Jul 2009	As of 11:30 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	4 Weeks	Americas	DigiKey	Available
DDC112UKG4	As of 11:30 AM GMT, 03 Jul 2009	As of 11:30 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	1 Week	Americas	DigiKey	Available
DDC112Y/250	As of 11:30 AM GMT, 03 Jul 2009	As of 11:30 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	4 Weeks	Americas	DigiKey	245
	4 Weeks	Europe	EBV Elektronik	13
DDC112Y/250G4	As of 11:30 AM GMT, 03 Jul 2009	As of 11:30 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	4 Weeks	Americas	DigiKey	Available
	4 Weeks	Europe	EBV Elektronik	125
DDC112Y/2K	As of 11:30 AM GMT, 03 Jul 2009	As of 11:30 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	4 Weeks	Americas	DigiKey	Available
DDC112Y/2KG4	As of 11:30 AM GMT, 03 Jul 2009	As of 11:30 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	4 Weeks	Americas	DigiKey	Available
DDC112YK/250	As of 11:30 AM GMT, 03 Jul 2009	As of 11:30 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	4 Weeks	Americas	Rochester Electronics	>1k
		Europe	Abacus Polar	250
		Europe	Avnet-SILICA	185
DDC112YK/250G4	As of 11:30 AM GMT, 03 Jul 2009	As of 11:30 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	4 Weeks	None Reported View Distributors
DDC112YK/2K	As of 11:30 AM GMT, 03 Jul 2009	As of 11:30 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	6 Weeks	None Reported View Distributors
DDC112YK/2KG4	As of 11:30 AM GMT, 03 Jul 2009	As of 11:30 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	6 Weeks	None Reported View Distributors
View all Distributors

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

	Product Content				DPPM / MTBF / FIT Rate
Device	Eco Plan*	Lead / Ball Finish	MSL Rating / Peak Reflow	Details	Details
DDC112U	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
DDC112U/1K	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
DDC112U/1KG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
DDC112UG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
DDC112UK	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
DDC112UK/1K	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
DDC112UK/1KG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
DDC112UKG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
DDC112Y/250	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
DDC112Y/250G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
DDC112Y/2K	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
DDC112Y/2KG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
DDC112YK/250	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
DDC112YK/250G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
DDC112YK/2K	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
DDC112YK/2KG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for DDC112

Datasheet

DDC112: Dual Current Input 20-Bit Analog-To-Digital Converter (Rev. B) (PDF 757 KB) 5688 views
06 Oct 2004

Application Notes

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Giving Delta-Sigma Converters a Gain Boost with a Front End Analog Gain Stage (HTM 8 KB) 4449 views
27 Sep 2000 Read Abstract
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27 Sep 2000 Read Abstract
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27 Sep 2000 Read Abstract
The DDC112\'s Test Mode (HTM 8 KB) 308 views
27 Sep 2000 Read Abstract
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27 Sep 2000 Read Abstract
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27 Sep 2000 Read Abstract

User Guides

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27 Sep 2000
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31 Oct 2007

Solution Guides

Medical Update (PDF 185 KB) 5900 views
05 May 2006

More Literature

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Tools & Software

Name	Part #	Company	Tool / Software Type
DDC11xEVM-PDK Evaluation Module	DDC11XEVM-PDK	Texas Instruments	Development Boards/EVMs

Part #	Name	Product Family	Comments
DDC232	32 Channel Current-Input 20-bit ADC		The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 32 channel device
DDC118	Octal Current-Input 20-Bit Analog-to-Digital Converter		The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 8 channel device
DDC114	DDC114: Quad Current Input 20-Bit Analog-To-Digital Converter		The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 4 channel device
DDC101	20-Bit Analog-to-Digital Converter		The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. Single channel device with higher sampling rate
OPA350	High-Speed, Single-Supply, Rail-to-Rail Operational Amplifiers MicroAmplifier(TM) Series	PRECISION AMPLIFIERS - LOW OFFSET VOLTAGE	OPERATIONAL AMPLIFIER
REF5040	Low Noise, Very Low Drift, Precision VOLTAGE REFERENCE	REFERENCES - SERIES VOLTAGE REFERENCES	SERIES VOLTAGE REFERENCE
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Nuts and Bolts of the Delta-Sigma Converter

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Duration:10:25
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DDC112 Status: ACTIVE

Dual Current Input 20-Bit Analog-To-Digital Converter

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