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Texas - SAR ADC

Numéro de référence ADS7029-Q1
Description SAR ADC
Fabricant Texas 
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ADS7029-Q1
SBAS811 – JANUARY 2017
ADS7029-Q1 Small-Size, Low-Power, 8-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:
– 1.11 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:
– 8-Bit Resolution with NMC
– ±0.2 LSB DNL; ±0.25 LSB INL
– 49-dB SNR with 3-V AVDD
– –70-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 ADS7029-Q1 device is a an automotive Q100-
qualified, 8-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 ADS7029-Q1 complies with the
JESD8-7A standard for a normal DVDD range
(1.65 V to 1.95 V).
The ADS7029-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
ADS7029-Q1, along with miniature form-factor and
low-power consumption, makes this device suitable
for space-constrained and fast-scanning automotive
applications.
PART NAME
ADS7029-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
ADS7029-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.

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