ADS8319_15 Datasheet, PDF (1/36 Pages) Texas Instruments – Serial Interface, Micropower, Miniature SAR Analog-to-Digital Converter

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ADS8319
SLAS600B – MAY 2008 – REVISED DECEMBER 2015
ADS8319 16-Bit, 500-kSPS, Serial Interface, Micropower, Miniature,
SAR Analog-to-Digital Converter
1 Features
•1 500-kHz Sample Rate
• 16-Bit Resolution
• Zero Latency at Full Speed
• Unipolar, Single-Ended Input Range: 0 V to V_ref
• SPI™-Compatible Serial Interface with Daisy-
Chain Option
• Excellent Performance:
– 93.6-dB SNR (Typ) at 10-kHz Input
– –106-dB THD (Typ) at 10-kHz Input
– ±1.5-LSB (Max) INL
– ±1.0-LSB (Max) DNL
• Low Power Dissipation: 18 mW (Typ) at 500 kSPS
• Power Scales Linearly with Speed:
3.6 mW/100 kSPS
• Power Dissipation During Power-Down State:
0.25 μW (Typ)
• MSOP-10 and SON-10 Packages
2 Applications
• Battery-Powered Equipment
• Data Acquisition Systems
• Instrumentation and Process Controls
• Medical Electronics
• Optical Networking
3 Description
The ADS8319 is a 16-bit, 500-kSPS, analog-to-digital
converter (ADC) that operates with a 2.25-V to 5.5-V
external reference. The device includes a capacitor-
based, successive-approximation register (SAR) ADC
with inherent sample and hold.
The device includes a 50-MHz, SPI-compatible serial
interface. The interface is designed to support daisy-
chaining or cascading of multiple devices.
Furthermore, a Busy Indicator makes synchronizing
with the digital host easy.
The device unipolar, single-ended input range
supports an input swing of 0 V to +V_ref.
Device operation is optimized for very-low power
operation and the power consumption directly scales
with speed. This feature makes the device attractive
for lower speed applications. The device is available
in MSOP-10 and SON-10 packages.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
ADS8319
VSSOP (10)
SON (10)
3.00 mm × 3.00 mm
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
+VA
+VBD
IN+
IN-
REFIN
SAR
CDAC
COMP
ADS8319
GND
O/P
Drive
I/P
Shift
Reg
Conversion and I/O
Control Logic
CONVST
SDO
SDI
SCLK
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.