ADS-929GM View Datasheet(PDF) - DATEL Data Acquisition products
Part Name
Description
Manufacturer
ADS-929GM Datasheet PDF : 9 Pages
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THERMAL REQUIREMENTS
All DATEL sampling A/D converters are fully characterized and speci-
fied over operating temperature (case) ranges of 0 to +70°C and –55
to +125°C. All room-temperature (TA = +25°C) production testing is
performed without the use of heat sinks or forced-air cooling. Thermal
impedance figures for each device are listed in their respective specifica-
tion tables.
These devices do not normally require heat sinks; however, standard
precautionary design and layout procedures should be used to ensure
ADS-929
14-Bit, 2MHz, Low-Power Sampling A/D Converters
devices do not overheat. The ground and power planes beneath the package,
as well as all pcb signal runs to and from the device, should be as heavy as
possible to help conduct heat away from the package.
Electrically-insulating, thermally-conductive "pads" may be installed
underneath the package. Devices should be soldered to boards rather than
"socketed," and of course, minimal air flow over the surface can greatly help
reduce the package temperature.
START
CONVERT
INTERNAL S/H
EOC
N
200ns
typ.
10ns typ.
Hold
310ns typ.
30ns typ.
OUTPUT
DATA
Data (N – 1) Valid
N+1
Acquisition Time
190ns
±40ns
70ns ±10ns
Conversion Time
360ns ±20ns
35ns max.
75ns max.
Data N Valid
425ns min.
Invalid
Data
Notes: 1. fs = 2MHz.
2. The ADS-929 is an edge-triggered device. All internal operations
are triggered by the rising edge of the start convert pulse, which
may be as narrow as 20nsec. All production testing is performed
at a 2MHz sampling rate with 200nsec wide start pulses. For
lower sampling rates, wider start pulses may be used, however, a
minimum pulse width low of 20nsec must be maintained.
Figure 4. ADS-929 Timing Diagram
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com
12 Aug 2015 MDA_ADS-929.D01 Page 5 of 9
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