ADS-947MC Murata Power Solutions Inc, ADS-947MC Datasheet - Page 5

• Manufacturer Part Number: ADS-947MC
• Description: Analog To Digital Converter
• Manufacturer: Murata Power Solutions Inc

THERMAL REQUIREMENTS
All DATEL sampling A/D converters are fully characterized and specifi ed over
operating temperature (case) ranges of 0 to +70°C and –40 to +100°C. All
room temperature (TA = +25°C) production testing is performed without the
use of heat sinks or forced air cooling. Thermal impedance fi gures for each
device are listed in their respective specifi cation tables. These devices do not
normally require heat sinks, however, standard precautionary design and layout
procedures should be used to ensure devices do not overheat. The ground and
power planes beneath the package, as well as all pcb signal runs to and from
DATEL
®
INTERNAL EOC
INTERNAL S/H
CONVERT
OUTPUT
START
VALID
DATA
DATA
Notes:
1. Scale is approximately 5ns per division. Sampling rate = 10MHz.
2. The start convert pulse must be betw
3. For no latency delay and an input range of ±0.5 Volts, order ADS-947MC-31122.
to ensure proper operation. For sampling rates less than 10MHz, the start pulse can be wider than 85nsec, however a minimum
pulse width low of 15nsec should be maintained. A 10MHz clock with a 20nsec positive pulse width is used for all production testing.
40ns max.
20ns
typ.
N
®
15ns
10ns typ.
65ns typ.
(61ns min., 68ns max.)
• 11 Cabot Boulevard, Mansfi eld, MA 02048-1151 USA • Tel: [phone] • www.datel.com • e-mail: [e-mail]
Hold
DATA N-1 VALID
DATA N-1 VALID
Conversion Time
50ns typ.
(±5ns)
25ns typ.
40ns typ.
70ns typ.
(±5ns)
een 20 and 50ns wide or between 80 and 100ns wide (when sampling at 10MHz)
(22ns min., 28ns max.)
Figure 4. ADS-947 Timing Diagram
Acquisition Time
35ns
typ.
INVALID DATA
50ns typ.
N
+1
the device, should be as heavy as possible to help conduct heat away from the
package.
Electrically-insulating, thermally-conductive "pads" may be installed under-
neath the package. Devices should be soldered to boards rather than socketed,
and of course, minimal air fl ow over the surface can greatly help reduce the
package temperature.
DATA N VALID
DATA N VALID
40ns typ.
(±5ns)
14-Bit, 10MHz Sampling A/D Converters
01 Apr 2011 MDA_ADS-947.B02 Page 5 of 8
ADS-947