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ADS-944

DATEL
Part Number ADS-944
Manufacturer DATEL
Description 5MHz Sampling A/D Converters
Published May 5, 2014
Detailed Description ADS-944 14-Bit, 5MHz Sampling A/D Converters PRODUCT OVERVIEW The low-cost ADS-944 is a high-performance, 14-bit, 5MHz ...
Datasheet PDF File ADS-944 PDF File

ADS-944
ADS-944

Overview
ADS-944 14-Bit, 5MHz Sampling A/D Converters PRODUCT OVERVIEW The low-cost ADS-944 is a high-performance, 14-bit, 5MHz sampling A/D converter.
This device accurately samples fullscale input signals up to Nyquist frequencies with no missing codes.
The dynamic performance of the ADS-944 has been optimized to achieve a THD of –77dB and a SNR of 76dB.
Packaged in a small, 32-pin TDIP, the functionally complete ADS-944 contains a fast-settling sample-hold amplifier, a subranging (two-pass) A/D converter, an internal reference, timing and control logic, three-state outputs, and errorcorrection circuitry.
Digital input and output levels are TTL.
Requiring ±15V, +5V and –5.
2V supplies, the ADS-944 typically dissipates 2.
95 Watts.
The unit is offered with a bipolar input range of ±1.
25V.
Models are available in commercial (0 to +70°C), industrial (–40 to +100°C), or HI-REL (–55 to +125°C) operating temperature ranges.
Typical applications include radar signal analysis, medical/ graphic imaging, and FFT spectrum analysis.
FEATURES „ 14-bit resolution „ 5MHz minimum sampling rate „ No missing codes over full HI-REL temperature range „ Edge-triggered, no pipeline delay „ Low power, 2.
95 Watts „ Small, 32-pin, ceramic TDIP package „ SMT package available „ Excellent dynamic performance „ MIL-STD-883 screening or DESC SMD available INPUT/OUTPUT CONNECTIONS PIN FUNCTION PIN FUNCTION 1 +5V ANALOG SUPPLY 32 START CONVERT 2 –5.
2V DIGITAL SUPPLY 31 BIT 1 (MSB) 3 ANALOG INPUT 30 BIT 1 (MSB) 4 ANALOG GROUND 29 BIT 2 5 OFFSET ADJUST 28 BIT 3 6 ANALOG GROUND 27 BIT 4 7 GAIN ADJUST 26 BIT 5 8 COMP.
BITS 25 BIT 6 9 OUTPUT ENABLE 24 BIT 7 10 +5V DIGITAL SUPPLY 23 BIT 8 11 ANALOG GROUND 22 BIT 9 12 +15V SUPPLY 21 BIT 10 13 –15V SUPPLY 20 BIT 11 14 –5.
2V ANALOG SUPPLY 19 BIT 12 15 DIGITAL GROUND 18 BIT 13 16 EOC 17 BIT 14 (LSB) BLOCK DIAGRAM ANALOG INPUT 3 GAIN ADJUST 7 OFFSET ADJUST 5 START CONVERT 32 EOC 16 – S/H + GAIN CIRCUIT BUFFER FLASH ADC 1 REF...


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