ADS7844 Status:ACTIVE

12-Bit, 8-Channel Serial Output Sampling Analog-To-Digital Converter

Burr-Brown

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Datasheet

ADS7844: 12-Bit, 8-Channel Serial Output Sampling Analog-To-Digital Converter (Rev. A) (ads7844.pdf, 549 KB)
17 Oct 2003 Download

	ADS7844
Resolution(Bits)	12
Sample Rate (max)	200kSPS
Architecture	SAR
Power Consumption(Typ)(mW)	0.84
SINAD(dB)	72
SNR(dB)	72
SFDR(dB)	78
DNL(Max)(+/-LSB)	1
INL(Max)(+/-LSB)	1
No Missing Codes(Bits)	12
No. of Supplies	1
Analog Voltage AV/DD(Min)(V)	2.7
Analog Voltage AV/DD(Max)(V)	5.25
Logic Voltage DV/DD(Min)(V)	2.7
Logic Voltage DV/DD(Max)(V)	5.25
Input Configuration Range	Vref
Reference Mode	Ext
Rating	Catalog
Pin/Package	20SSOP,20SSOP/QSOP
# Input Channels	8
	Samples
	Inventory

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Product Information

Features

SINGLE SUPPLY: 2.7V to 5V
8-CHANNEL SINGLE-ENDED OR 4-CHANNEL DIFFERENTIAL INPUT
UP TO 200kHz CONVERSION RATE
±1 LSB MAX INL AND DNL
NO MISSING CODES
72dB SINAD
SERIAL INTERFACE
20-LEAD QSOP AND 20-LEAD SSOP PACKAGES
ALTERNATE SOURCE FOR MAX147
APPLICATIONS
- DATA ACQUISITION
- TEST AND MEASUREMENT
- INDUSTRIAL PROCESS CONTROL
- PERSONAL DIGITAL ASSISTANTS
- BATTERY-POWERED SYSTEMS

All trademarks are the property of their respective owners.

Description

The ADS7844 is an 8-channel, 12-bit sampling analog-to-digital converter (ADC) with a synchronous serial interface. Typical power dissipation is 3mW at a 200kHz throughput rate and a +5V supply. The reference voltage (V_REF) can be varied between 100mV and V_CC, providing a corresponding input voltage range of 0V to V_REF. The device includes a shutdown mode which reduces power dissipation to under 1µW. The ADS7844 is guaranteed down to 2.7V operation.

Low power, high speed, and on-board multiplexer make the ADS7844 ideal for battery- operated systems such as personal digital assistants, portable multichannel data loggers, and measurement equipment. The serial interface also provides low-cost isolation for remote data acquisition. The ADS7844 is available in a 20-lead QSOP package and the MAX147 equivalent 20-lead SSOP is guaranteed over the –40°C to +85°C temperature range.

Pricing / Packaging / CAD Design Tools / Samples

			Price ($US)	Packaging			CAD Design Tools		Samples
Device	Status	Temp (^oC)	Price ($US) \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Footprints	Samples
ADS7844E	ACTIVE		2.90 \| 1ku	SSOP/QSOP (DBQ) \| 20	View	56 \| TUBE	Purchase Samples
ADS7844E/2K5	ACTIVE	-40 to 85	2.90 \| 1ku	SSOP/QSOP (DBQ) \| 20	View	2500 \| LARGE T&R	Purchase Samples
ADS7844E/2K5G4	ACTIVE	-40 to 85	2.90 \| 1ku	SSOP/QSOP (DBQ) \| 20	View	2500 \| LARGE T&R	Purchase Samples
ADS7844EB	ACTIVE		3.50 \| 1ku	SSOP/QSOP (DBQ) \| 20	View	56 \| TUBE
ADS7844EB/2K5	ACTIVE		3.50 \| 1ku	SSOP/QSOP (DBQ) \| 20	View	2500 \| LARGE T&R	Purchase Samples
ADS7844EB/2K5G4	ACTIVE		3.50 \| 1ku	SSOP/QSOP (DBQ) \| 20	View	2500 \| LARGE T&R	Purchase Samples
ADS7844EBG4	ACTIVE		3.50 \| 1ku	SSOP/QSOP (DBQ) \| 20	View	56 \| TUBE
ADS7844EG4	ACTIVE		2.90 \| 1ku	SSOP/QSOP (DBQ) \| 20	View	56 \| TUBE	Purchase Samples
ADS7844N	ACTIVE		2.90 \| 1ku	SSOP (DB) \| 20	View	70 \| TUBE	Purchase Samples
ADS7844N/1K	ACTIVE	-40 to 85	2.90 \| 1ku	SSOP (DB) \| 20	View	1000 \| LARGE T&R	Purchase Samples
ADS7844N/1KG4	ACTIVE	-40 to 85	2.90 \| 1ku	SSOP (DB) \| 20	View	1000 \| LARGE T&R	Purchase Samples
ADS7844NB	ACTIVE		3.50 \| 1ku	SSOP (DB) \| 20	View	70 \| TUBE
ADS7844NB/1K	ACTIVE		3.50 \| 1ku	SSOP (DB) \| 20	View	1000 \| LARGE T&R	Purchase Samples
ADS7844NB/1KG4	ACTIVE		3.50 \| 1ku	SSOP (DB) \| 20	View	1000 \| LARGE T&R	Purchase Samples
ADS7844NBG4	ACTIVE		3.50 \| 1ku	SSOP (DB) \| 20	View	70 \| TUBE
ADS7844NG4	ACTIVE		2.90 \| 1ku	SSOP (DB) \| 20	View	70 \| TUBE	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
ADS7844E	As of 9:05 AM GMT, 29 Aug 2008				As of 9:05 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time		Region	Company	In Stock	Purchase
	0*	7682 \| 28 Jan	16 Weeks		Americas	Avnet	>1k
		>10k \| 4 Feb				DigiKey	238
						Mouser Electronics	373
						Newark	320
					Asia	WPI	52
					Europe	Abacus Polar	203
						Arrow Southern Europe	56
						Avnet-SILICA	493
						Spoerle	56
ADS7844E/2K5	As of 9:05 AM GMT, 29 Aug 2008				As of 9:05 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time		Region	Company	In Stock	Purchase
	0*	>10k \| 26 Jan	16 Weeks		None Reported View Distributors
ADS7844E/2K5G4	As of 9:05 AM GMT, 29 Aug 2008				As of 9:05 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time		Region	Company	In Stock	Purchase
	0*	>10k \| 26 Jan	16 Weeks		None Reported View Distributors
ADS7844EB	As of 9:05 AM GMT, 29 Aug 2008				As of 9:05 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time		Region	Company	In Stock	Purchase
	0*	800 \| 29 Jan	16 Weeks		Americas	DigiKey	>1k
		1888 \| 5 Feb			Americas	Mouser Electronics	463
		1028 \| 11 Feb			Asia	WPI	210
		1462 \| 18 Feb
		1680 \| 25 Feb
ADS7844EB/2K5	As of 9:05 AM GMT, 29 Aug 2008				As of 9:05 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time		Region	Company	In Stock	Purchase
	0*	800 \| 27 Jan	26 Weeks		None Reported View Distributors
		1888 \| 3 Feb
		1028 \| 9 Feb
		1462 \| 16 Feb
		1680 \| 23 Feb
ADS7844EB/2K5G4	As of 9:05 AM GMT, 29 Aug 2008				As of 9:05 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time		Region	Company	In Stock	Purchase
	0*	800 \| 27 Jan	26 Weeks		None Reported View Distributors
		1888 \| 3 Feb
		1028 \| 9 Feb
		1462 \| 16 Feb
		1680 \| 23 Feb
ADS7844EBG4	As of 9:05 AM GMT, 29 Aug 2008				As of 9:05 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time		Region	Company	In Stock	Purchase
	0*	800 \| 29 Jan	16 Weeks		Europe	EBV Elektronik	19
		1888 \| 5 Feb			Europe	Farnell	79
		1028 \| 11 Feb
		1462 \| 18 Feb
		1680 \| 25 Feb
ADS7844EG4	As of 9:05 AM GMT, 29 Aug 2008				As of 9:05 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time		Region	Company	In Stock	Purchase
	0*	7682 \| 28 Jan	16 Weeks		Europe	Farnell	274
	0*	>10k \| 4 Feb	16 Weeks
ADS7844N	As of 9:05 AM GMT, 29 Aug 2008				As of 9:05 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time		Region	Company	In Stock	Purchase
	0*	>10k \| 19 Jan	16 Weeks		Americas	Arrow	291
					Americas	Newark	250
					Europe	Avnet-SILICA	>1k
					Europe	Spoerle	487
ADS7844N/1K	As of 9:05 AM GMT, 29 Aug 2008				As of 9:05 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time		Region	Company	In Stock	Purchase
	0*	>10k \| 19 Jan	16 Weeks		Americas	Rochester Electronics	74
ADS7844N/1KG4	As of 9:05 AM GMT, 29 Aug 2008				As of 9:05 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time		Region	Company	In Stock	Purchase
	0*	>10k \| 19 Jan	16 Weeks		Europe	Spoerle	1k
ADS7844NB	As of 9:05 AM GMT, 29 Aug 2008				As of 9:05 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time		Region	Company	In Stock	Purchase
	0*	4157 \| 19 Jan	20 Weeks	Americas	Avnet	761
		2617 \| 26 Jan			DigiKey	852
		6179 \| 2 Feb			Mouser Electronics	>1k
					Newark	140
					Rochester Electronics	51
ADS7844NB/1K	As of 9:05 AM GMT, 29 Aug 2008			As of 9:05 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	4157 \| 19 Jan	20 Weeks	None Reported View Distributors
		2617 \| 26 Jan
		6179 \| 2 Feb
ADS7844NB/1KG4	As of 9:05 AM GMT, 29 Aug 2008			As of 9:05 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	4157 \| 19 Jan	20 Weeks	None Reported View Distributors
		2617 \| 26 Jan
		6179 \| 2 Feb
ADS7844NBG4	As of 9:05 AM GMT, 29 Aug 2008			As of 9:05 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	4157 \| 19 Jan	20 Weeks	Europe	EBV Elektronik	630
		2617 \| 26 Jan		Europe	Spoerle	70
		6179 \| 2 Feb
ADS7844NG4	As of 9:05 AM GMT, 29 Aug 2008			As of 9:05 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 19 Jan	16 Weeks	None Reported View Distributors
View all Distributors

* Our information is updated daily, so please check back with us soon if this does not meet your needs. You may also contact your TI Authorized Distributor , including those listed above, for real time stock information.

** 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
ADS7844E	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS7844E/2K5	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS7844E/2K5G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS7844EB	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS7844EB/2K5	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS7844EB/2K5G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS7844EBG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS7844EG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS7844N	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR