ADS8329_16 Datasheet, PDF (1/50 Pages) Texas Instruments – LOW-POWER, 16-BIT, 1-MHz, SINGLE/DUAL UNIPOLAR INPUT, ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL INTERFACE

ADS8329
ADS8330
www.ti.com ................................................................................................................................................... SLAS516C – DECEMBER 2006 – REVISED JULY 2009
LOW-POWER, 16-BIT, 1-MHz, SINGLE/DUAL UNIPOLAR INPUT,
ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL INTERFACE
FEATURES
1
•2 2.7-V to 5.5-V Analog Supply, Low Power:
– 15.5 mW (1 MHz, +VA = 3 V, +VBD = 1.8 V)
• 1-MHz Sampling Rate 3 V ≤ +VA ≤ 5.5 V,
900-kHz Sampling Rate 2.7 V ≤ +VA ≤ 3 V
• Excellent DC Performance:
±1.0 LSB Typ, ±1.75 LSB Max INL
±0.5 LSB Typ, ±1 LSB Max DNL
16-Bit NMC Over Temperature
±0.5 mV Max Offset Error at 3 V
±1 mV Max Offset Error at 5 V
• Excellent AC Performance at f_I = 10 kHz with
93 dB SNR, 105 dB SFDR, –102 dB THD
• Built-In Conversion Clock (CCLK)
• 1.65 V to 5.5 V I/O Supply:
SPI/DSP Compatible Serial
SCLK up to 50 MHz
• Comprehensive Power-Down Modes:
Deep Power-Down
Nap Power-Down
Auto Nap Power-Down
• Unipolar Input Range: 0 V to V_REF
• Software Reset
• Global CONVST (Independent of CS)
• Programmable Status/Polarity EOC/INT
• 16-Pin 4 × 4 QFN and 16-Pin TSSOP Packages
• Multi-Chip Daisy Chain Mode
• Programmable TAG Bit Output
• Auto/Manual Channel Select Mode (ADS8330)
APPLICATIONS
• Communications
• Transducer Interface
• Medical Instruments
• Magnetometers
• Industrial Process Control
• Data Acquisition Systems
• Automatic Test Equipment
DESCRIPTION
The ADS8329 is a low-power, 16-bit, 1-MSPS
analog-to-digital converter (ADC) with a unipolar
input. The device includes a 16-bit capacitor-based
SAR ADC with inherent sample-and-hold.
The ADS8330 is based on the same core and
includes a 2-to-1 input MUX with programmable
option of TAG bit output. Both the ADS8329 and
ADS8330 offer a high-speed, wide voltage serial
interface and are capable of chain mode operation
when multiple converters are used.
These converters are available in 4 × 4 QFN and
16-pin TSSOP packages, and are fully specified for
operation over the industrial –40°C to +85°C
temperature range.
Low Power, High-Speed SAR Converter Family
Type/Speed
16-bit single-ended
14-bit single-ended
12-bit single ended
Single
Dual
Single
Dual
Single
Dual
500 kSPS
ADS8327
ADS8328
—
—
—
—
1 MSPS
ADS8329
ADS8330
ADS7279
ADS7280
ADS7229
ADS7230
ADS8330 ADS8329
+IN1
NC
+IN0
COM
+IN
−IN
REF+
REF−
SAR
OUTPUT
LATCH
SDO
and
3−STATE
DRIVER
+
_
CDAC
COMPARATOR
CONVERSION
and
CONTROL
FS/CS
SCLK
SDI
OSC
LOGIC
CONVST
EOC/INT/CDI
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006–2009, Texas Instruments Incorporated