ADS929 Datasheet, PDF (1/8 Pages) List of Unclassifed Manufacturers – 14-Bit, 2MHz, Low-Power Sampling A/D Converters

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FEATURES
• 14-bit resolution
• 2MHz sampling rate
• No missing codes
• Functionally complete
• Small 24-pin DDIP or SMT package
• Low power, 1.7 Watts
• Operates from ±15V or ±12V supplies
• Edge-triggered; No pipeline delays
• Bipolar ±5V input range
GENERAL DESCRIPTION
The ADS-929 is a high-performance, 14-bit, 2MHz sampling
A/D converter. This device samples input signals up to Nyquist
frequencies with no missing codes. The ADS-929 features
outstanding dynamic performance including a THD of –79dB.
Housed in a small 24-pin DDIP or SMT (gull-wing) package,
the functionally complete ADS-929 contains a fast-settling
sample-hold amplifier, a subranging (two-pass) A/D converter,
a precise voltage reference, timing/control logic, and error-
correction circuitry. Digital input and output levels are TTL.
Requiring ±15V (or ±12V) and +5V supplies, the ADS-929
typically dissipates 1.7W (1.4W for ±12V). The unit is offered
with a bipolar input (–5V to +5V). Models are available for use
in either commercial (0 to +70°C) or military (–55 to +125°C)
operating temperature ranges. Applications include radar,
sonar, spectrum analysis, and graphic/medical imaging.
ADS-929
14-Bit, 2MHz, Low-Power
Sampling A/D Converters
INPUT/OUTPUT CONNECTIONS
PIN FUNCTION
PIN FUNCTION
1
BIT 14 (LSB)
2
BIT 13
3
BIT 12
4
BIT 11
5
BIT 10
6
BIT 9
7
BIT 8
8
BIT 7
9
BIT 6
10 BIT 5
11 BIT 4
12 BIT 3
24 –12V/–15V SUPPLY
23 ANALOG GROUND
22 +12V/+15V SUPPLY
21 +10V REFERENCE OUT
20 ANALOG INPUT
19 ANALOG GROUND
18 BIT 1 (MSB)
17 BIT 2
16 START CONVERT
15 EOC
14 DIGITAL GROUND
13 +5V SUPPLY
+10V REF. OUT 21
ANALOG INPUT 20
S/H
–
+
REF
S2
FLASH
ADC
S1
BUFFER
DAC
START CONVERT 16
EOC 15
TIMING AND
CONTROL LOGIC
18 BIT 1 (MSB)
17 BIT 2
12 BIT 3
11 BIT 4
10 BIT 5
9 BIT 6
8 BIT 7
7 BIT 8
6 BIT 9
5 BIT 10
4 BIT 11
3 BIT 12
2 BIT 13
1 BIT 14 (LSB)
13
+5V SUPPLY
14
DIGITAL GROUND
22
+12V/+15V SUPPLY
19, 23
ANALOG GROUND
Figure 1. ADS-929 Functional Block Diagram
24
–12V/–15V SUPPLY
DATEL, Inc., 11 Cabot Boulevard, Mansfield, MA 02048-1151 (U.S.A.) • Tel: [phone] Fax: [phone] • For immediate assistance: [phone]