ADS-927MC-C Murata, ADS-927MC-C Datasheet

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ADS-927MC-C

Manufacturer Part Number
ADS-927MC-C
Description
converter. 5v input range, no pipeline delay, 0 c to +70 c temperature range, rohs compliant....
Manufacturer
Murata
Datasheet
FEATURES
DATEL
BLOCK DIAGRAM
14-bit resolution
1MHz sampling rate
Functionally complete
No missing codes
Small 24-pin DDIP or SMT package
Low power, 1.9 Watts maximum
Operates from ±15V or ±12V supplies
+5V supply
Bipolar ±5V input range
®
START CONVERT 16
+10V REF. OUT 21
ANALOG INPUT 20
EOC 15
+5V SUPPLY
13
+
CONTROL LOGIC
®
TIMING AND
• 11 Cabot Boulevard, Mansfi eld, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com
DIGITAL GROUND
1MHz sampling A/D converter. This device samples
input signals up to Nyquist frequencies with no
missing codes. The ADS-927 features outstanding
dynamic performance including a THD of –80dB.
wing) package, the functionally complete ADS-927
contains a fast-settling sample-hold amplifi er, a
subranging (two-pass) A/D converter, a precise
voltage reference, timing/control logic, and error-
S/H
PRODUCT OVERVIEW
14
The ADS-927 is a high-performance, 14-bit,
Housed in a small 24-pin DDIP or SMT (gull-
Figure 1. ADS-927 Functional Block Diagram
S
S
2
1
+12V/+15V SUPPLY
BUFFER
22
14-Bit, 1MHz, Low-Power Sampling A/D Converters
FLASH
REF
ADC
ANALOG GROUND
19, 23
DAC
PIN
1
2
3
4
5
6
7
8
9
10
11
12
correction circuitry. Digital input and output levels
are TTL.
the ADS-927 dissipates only 1.95W (1.65W for
±12V), maximum. The unit is offered with a bipolar
input (–5V to +5V). Models are available for use in
either commercial (0 to +70°C) or HI-REL (–55 to
+125°C) operating temperature ranges. Applica-
tions include radar, sonar, spectrum analysis, and
graphic/medical imaging.
FUNCTION
BIT 14 (LSB)
BIT 13
BIT 12
BIT 11
BIT 10
BIT 9
BIT 8
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
Requiring ±15V (or ±12V) and +5V supplies,
–12V/–15V SUPPLY
01 Apr 2011 MDA_ADS-927.B02 Page 1 of 8
INPUT/OUTPUT CONNECTIONS
24
18 BIT 1 (MSB)
17 BIT 2
12 BIT 3
11 BIT 4
10 BIT 5
9
8
7
6
5
4
3
2
1
PIN
24
23
22
21
20
19
18
17
16
15
14
13
BIT 6
BIT 7
BIT 8
BIT 9
BIT 10
BIT 11
BIT 12
BIT 13
BIT 14 (LSB)
ADS-927
FUNCTION
–12V/–15V SUPPLY
ANALOG GROUND
+12V/+15V SUPPLY
+10V REFERENCE OUT
ANALOG INPUT
ANALOG GROUND
BIT 1 (MSB)
BIT 2
START CONVERT
EOC
DIGITAL GROUND
+5V SUPPLY

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ADS-927MC-C Summary of contents

Page 1

... BIT 11 3 BIT 12 2 BIT 13 1 BIT 14 (LSB) 19 ANALOG GROUND –12V/–15V SUPPLY 01 Apr 2011 MDA_ADS-927.B02 Page FUNCTION –12V/–15V SUPPLY ANALOG GROUND +12V/+15V SUPPLY +10V REFERENCE OUT ANALOG INPUT ANALOG GROUND BIT 1 (MSB) BIT 2 START CONVERT EOC ...

Page 2

... Apr 2011 MDA_ADS-927.B02 Page ADS-927 MAX. UNITS +70 °C +125 °C — °C/Watt — °C/Watt +150 °C MAX. UNITS — Volts — kΩ ...

Page 3

... Figure 2 is used, also locate it as close to the ADS-927 as possible. 2. The ADS-927 achieves its specifi ed accuracies without the need for exter- nal calibration. If required, the device's small initial offset and gain errors DATEL ® ...

Page 4

... For the ADS-927, offset adjusting is normally accomplished at the point where the MSB and all other output bits are 0's and the LSB just changes from This digital output transition ideally occurs when the applied analog input is +½ ...

Page 5

... Invalid Data = 1MHz The ADS-927 is a pulse-triggered device. Its internal operations are triggered by both the rising and falling edges of the start convert pulse. When sampling at 1MHz, the start pulse must be between 175 and 225nsec wide. For lower sampling rates, wider start pulses may be used, however, a minimum pulse width low of 50nsec must be maintained ...

Page 6

... DATEL ® 14-Bit, 1MHz, Low-Power Sampling A/D Converters • 11 Cabot Boulevard, Mansfi eld, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com ADS-927 01 Apr 2011 MDA_ADS-927.B02 Page ...

Page 7

... Digital Output Code Digital Output Code Figure 7. ADS-927 Histogram and Differential Nonlinearity • 11 Cabot Boulevard, Mansfi eld, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com ADS-927 350 400 450 500 16,384 16,384 01 Apr 2011 MDA_ADS-927.B02 Page ...

Page 8

... TYP. (0.508) (0.254) ACCESSORIES Evaluation Board (without ADS-927) Heat Sinks for all ADS-917/927 DDIP models . makes no representation that the use of its products in the circuits described herein, or the use of other 01 Apr 2011 MDA_ADS-927.B02 Page ADS-927 ...

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