SAR ADC. ADS7049-Q1 Datasheet

ADS7049-Q1 ADC. Datasheet pdf. Equivalent

ADS7049-Q1 Datasheet
Recommendation ADS7049-Q1 Datasheet
Part ADS7049-Q1
Description 12-Bit 2-MSPS SAR ADC
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Texas Instruments ADS7049-Q1
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ADS7049-Q1
SBAS763 – NOVEMBER 2016
ADS7049-Q1 Small-Size, Low-Power, 12-Bit, 2-MSPS, SAR ADC
1 Features
1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 1: –40°C to 125°C
Ambient Operating Temperature Range
– Device HBM ESD Classification Level ±2000 V
– Device CDM ESD Classification Level ±1000 V
• Ultra-Low Power Consumption:
– 1.38 mW (max) at 2 MSPS with 3-V AVDD
– Less Than 1 µW at 1 kSPS with 3-V AVDD
• Miniature Footprint:
– 8-Pin VSSOP Package: 2.30 mm × 2.00 mm
• 2-MSPS Throughput with Zero Data Latency
• Wide Operating Range:
– AVDD: 2.35 V to 3.6 V
– DVDD: 1.65 V to 3.6 V (Independent of AVDD)
– Temperature Range: –40°C to +125°C
• Excellent Performance:
– 12-Bit Resolution with NMC
– ±0.5 LSB DNL; ±0.5 LSB INL
– 70-dB SNR with 3-V AVDD
– –80-dB THD with 3-V AVDD
• Unipolar Input Range: 0 V to AVDD
• Integrated Offset Calibration
• SPI-Compatible Serial Interface: 32 MHz
• JESD8-7A Compliant Digital I/O
2 Applications
• Automotive Infotainment
• Automotive Sensors
• Level Sensors
• Ultrasonic Flow Meters
• Motor Control
• Portable Medical Equipment
3 Description
The ADS7049-Q1 device is a an automotive Q100-
qualified, 12-bit, 2-MSPS, analog-to-digital converter
(ADC). The device supports a wide analog input
voltage range (2.35 V to 3.6 V) and includes a
capacitor-based, successive-approximation register
(SAR) ADC with an inherent sample-and-hold circuit.
The SPI-compatible serial interface is controlled by
the CS and SCLK signals. The input signal is
sampled with the CS falling edge and SCLK is used
for conversion and serial data output. The device
supports a wide digital supply range (1.65 V to 3.6 V),
enabling direct interface to a variety of host
controllers. The ADS7049-Q1 complies with the
JESD8-7A standard for a normal DVDD range
(1.65 V to 1.95 V).
The ADS7049-Q1 is available in an 8-pin, miniature,
VSSOP package and is specified for operation from
–40°C to +125°C. The fast sampling rate of the
ADS7049-Q1, along with miniature form-factor and
low-power consumption, makes this device suitable
for space-constrained and fast-scanning automotive
applications.
PART NAME
ADS7049-Q1
Device Information(1)
PACKAGE
BODY SIZE (NOM)
VSSOP (8)
2.30 mm × 2.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
VIN+
+
±
Typical Application
OPA_AVDD
+R
AINP
AVDD
AVDD used as Reference for
device
AVDD
ADS7049-Q1
C
AINM
GND
OPA_AVSS
Copyright © 2016, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.



Texas Instruments ADS7049-Q1
ADS7049-Q1
SBAS763 – NOVEMBER 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ..................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 5
6.6 Timing Requirements ................................................ 6
6.7 Switching Characteristics .......................................... 6
6.8 Typical Characteristics .............................................. 7
7 Parameter Measurement Information ................ 12
7.1 Digital Voltage Levels ............................................. 12
8 Detailed Description ............................................ 12
8.1 Overview ................................................................. 12
8.2 Functional Block Diagram ....................................... 13
8.3 Feature Description................................................. 13
8.4 Device Functional Modes........................................ 17
9 Application and Implementation ........................ 20
9.1 Application Information............................................ 20
9.2 Typical Application .................................................. 20
10 Power Supply Recommendations ..................... 23
10.1 AVDD and DVDD Supply Recommendations....... 23
10.2 Estimating Digital Power Consumption................. 23
10.3 Optimizing Power Consumed by the Device ........ 23
11 Layout................................................................... 24
11.1 Layout Guidelines ................................................. 24
11.2 Layout Example .................................................... 24
12 Device and Documentation Support ................. 25
12.1 Documentation Support ........................................ 25
12.2 Receiving Notification of Documentation Updates 25
12.3 Community Resources.......................................... 25
12.4 Trademarks ........................................................... 25
12.5 Electrostatic Discharge Caution ............................ 25
12.6 Glossary ................................................................ 25
13 Mechanical, Packaging, and Orderable
Information ........................................................... 25
4 Revision History
DATE
November 2016
REVISION
*
NOTES
Initial release.
2 Submit Documentation Feedback
Product Folder Links: ADS7049-Q1
Copyright © 2016, Texas Instruments Incorporated



Texas Instruments ADS7049-Q1
www.ti.com
5 Pin Configuration and Functions
DCU Package
8-Pin Leaded VSSOP
Top View
ADS7049-Q1
SBAS763 – NOVEMBER 2016
DVDD
SCLK
SDO
CS
1
2
3
4
8 GND
7 AVDD
6 AINP
5 AINM
Not to scale
Pin Functions
NAME
NO.
I/O
DESCRIPTION
AINM
5 Analog input Analog signal input, negative
AINP
6 Analog input Analog signal input, positive
AVDD
7
Supply
Analog power-supply input, also provides the reference voltage to the ADC
CS 4 Digital input Chip-select signal, active low
DVDD
1
Supply
Digital I/O supply voltage
GND
8
Supply
Ground for power supply, all analog and digital signals are referred to this pin
SCLK
2 Digital input Serial clock
SDO
3 Digital output Serial data out
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: ADS7049-Q1
Submit Documentation Feedback
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