Datasheet Texas Instruments ADS7945

Manufacturer	Texas Instruments
Series	ADS7945

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Parametrics

Parameters / Models	ADS7945SRTER	ADS7945SRTET
# Input Channels	2	2
Analog Voltage AVDD(Max), V	5.25	5.25
Analog Voltage AVDD(Min), V	2.7	2.7
Architecture	SAR	SAR
Digital Supply(Max), V	5.25	5.25
Digital Supply(Min), V	1.65	1.65
INL(Max), +/-LSB	1.5	1.5
Input Range(Max), V	5.25	5.25
Input Type	Differential	Differential
Integrated Features	N/A	N/A
Interface	SPI	SPI
Multi-Channel Configuration	Multiplexed	Multiplexed
Operating Temperature Range, C	-40 to 125	-40 to 125
Package Group	WQFN	WQFN
Package Size: mm2:W x L, PKG	16WQFN: 9 mm2: 3 x 3(WQFN)	16WQFN: 9 mm2: 3 x 3(WQFN)
Power Consumption(Typ), mW	10.5	10.5
Rating	Catalog	Catalog
Reference Mode	Ext	Ext
Resolution, Bits	14	14
SINAD, dB	83.5	83.5
SNR, dB	84	84
Sample Rate (max), SPS	2MSPS	2MSPS
Sample Rate(Max), MSPS	2	2
THD(Typ), dB	-92	-92

Eco Plan

Application Notes

• Download
  Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A)
  PDF, 227 Kb, Revision: A, File published: Nov 10, 2010
  This application report analyzes a simple method for calculating minimum acquisition times for successive-approximation register analog-to-digital converters (SAR ADCs). The input structure of the ADC is examined along with the driving circuit. The voltage on the sampling capacitor is then determined for the case when a step function is applied to the input of the driving circuit. Three different
• Download
  Determining Minimum Acquisition Times for SAR ADCs, part 2
  PDF, 215 Kb, File published: Mar 17, 2011
  The input structure circuit of a successive-approximation register analog-to-digital converter (SAR ADC) incombination with the driving circuit forms a transfer function that can be used to determine minimum acquisition times for different types of applied input signals. This application report, which builds on Determining Minimum Acquisition Times for SAR ADCs When a Step Function is Applied to
• Download
  Analog-to-Digital Converter Grounding Practices Affect System Performance (Rev. A)
  PDF, 69 Kb, Revision: A, File published: May 18, 2015
• Download
  A Glossary of Analog-to-Digital Specifications and Performance Characteristics (Rev. B)
  PDF, 425 Kb, Revision: B, File published: Oct 9, 2011
  This glossary is a collection of the definitions of Texas Instruments' Delta-Sigma (О”ОЈ), successive approximation register (SAR), and pipeline analog-to-digital (A/D) converter specifications and performance characteristics. Although there is a considerable amount of detail in this document, the product data sheet for a particular product specification is the best and final reference.
• Download
  Principles of Data Acquisition and Conversion (Rev. A)
  PDF, 132 Kb, Revision: A, File published: Apr 16, 2015

Model Line

Manufacturer's Classification

• Semiconductors> Data Converters> Analog-to-Digital Converters (ADCs)> Precision ADCs (<=10MSPS)