ADS8504 Datasheet, PDF (1/19 Pages) Burr-Brown (TI) – 12-BIT 250-KSPS SAMPLING CMOS ANALOG-TO-DIGITAL CONVERTER

BurrĆBrown Products
from Texas Instruments
ADS8504
SLAS434 – JUNE 2005
12-BIT 250-KSPS SAMPLING CMOS ANALOG-TO-DIGITAL CONVERTER
FEATURES
• 250-kHz Sampling Rate
• Standard ±10-V Input Range
• 73-dB SINAD With 45-kHz Input
• ±0.45 LSB Max INL
• ±0.45 LSB Max DNL
• 12 Bit No Missing Code
• ±1 LSB Bipolar Zero Errors
• ±0.4 PPM/°C Bipolar Zero Error Drift
• Single 5-V Supply Operation
• Pin-Compatible With ADS7804/05 (Low Speed)
and 16-Bit ADS8505
• Uses Internal or External Reference
• Full Parallel Data Output
• 70-mW Typ Power Dissipation at 250 KSPS
• 28-Pin SOIC Package
APPLICATIONS
• Industrial Process Control
• Data Acquisition Systems
• Digital Signal Processing
• Medical Equipment
• Instrumentation
DESCRIPTION
The ADS8504 is a complete 12-bit sampling A/D
converter using state-of-the-art CMOS structures. It
contains a complete 12-bit, capacitor-based, SAR
A/D with S/H, reference, clock, interface for
microprocessor use, and 3-state output drivers.
The ADS8504 is specified at a 250-kHz sampling rate
over the full temperature range. Precision resistors
provide an industry standard ±10-V input range, while
the innovative design allows operation from a single
+5-V supply, with power dissipation under 100 mW.
The ADS8504 is available in a 28-pin SOIC package
and is fully specified for operation over the industrial
-40°C to 85°C temperature range.
Clock
Successive Approximation Register and Control Logic
R/C
CS
BYTE
BUSY
9.8 kΩ
± 10 V Input
5 kΩ
CAP
2 kΩ
REF
CDAC
Buffer
4 kΩ
Internal
+2.5 V Ref
Comparator
Output
Latches
and
Three
State
Drivers
Three
State
Parallel
Data
Bus
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.
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 © 2005, Texas Instruments Incorporated