Datasheet

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ABSOLUTE MAXIMUM RATINGS
(1)
ELECTRICAL CHARACTERISTICS
ADS8505
SLAS180B – SEPTEMBER 2005 – REVISED JUNE 2007
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
PACKAGE/ORDERING INFORMATION
(1)
MINIMUM
NO MINIMUM SPECIFICATION
RELATIVE PACKAGE PACKAGE ORDERING TRANSPORT
PRODUCT MISSING SINAD TEMPERATURE
ACCURACY LEAD DESIGNATOR NUMBER MEDIA, QTY
CODE (dB) RANGE
(LSB)
ADS8505IBDW Tube, 20
SO-28 DW
ADS8505IBDWR Tape and Reel, 1000
ADS8505IB ±1.5 16 86 –40 °C to 85 ° C
ADS8505IBDB Tube, 50
SSOP-28 DB
ADS8505IBDBR Tape and Reel, 2000
ADS8505IDW Tube, 20
SO-28 DW
ADS8505IDWR Tape and Reel, 1000
ADS8505I ± 4 15 83 –40 ° C to 85 ° C
ADS8505IDB Tube, 50
SSOP-28 DB
ADS8505IDBR Tape and Reel, 2000
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
over operating free-air temperature range (unless otherwise noted)
(2)
UNIT
V
IN
± 25V
Analog inputs REF +V
ANA
+ 0.3 V to AGND2 – 0.3 V
CAP Indefinite short to AGND2, momentary short to V
ANA
DGND, AGND1, AGND2 ± 0.3 V
V
ANA
6 V
Ground voltage differences
V
DIG
to V
ANA
0.3 V
V
DIG
6 V
Digital inputs –0.3 V to +V
DIG
+ 0.3 V
Maximum junction temperature 165 ° C
Internal power dissipation 825 mW
Lead temperature (soldering, 10s) 300 ° C
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltage values are with respect to network ground terminal.
T
A
= –40 ° C to 85 ° C, f
s
= 250 kHz, V
DIG
= V
ANA
= 5 V, using internal reference (unless otherwise noted)
ADS8505I ADS8505IB
PARAMETER TEST CONDITIONS UNIT
MIN TYP MAX MIN TYP MAX
Resolution 16 16 Bits
ANALOG INPUT
Voltage range ± 10 ± 10 V
Impedance 11.5 11.5 k Ω
Capacitance 50 50 pF
THROUGHPUT SPEED
Conversion cycle Acquire and convert 4 4 µ s
Throughput rate 250 250 kHz
2
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