ADS-926MM-C Murata, ADS-926MM-C Datasheet

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ADS-926MM-C

Manufacturer Part Number
ADS-926MM-C
Description
converter. 5v input range no pipeline delay, -55 c to +125 c temperature range, rohs compliant....
Manufacturer
Murata
Datasheet
FEATURES
DATEL
BLOCK DIAGRAM
14-bit resolution
500kHz sampling rate
Functionally complete; No missing codes
Small 24-pin DDIP or SMT package
Operates from ±15V or ±12V supplies
+5V supply
Low power, 1.75 Watts maximum
Samples up to Nyquist frequencies
Outstanding dynamic performance
Bipolar ±5V input range
®
START CONVERT 16
ANALOG INPUT 20
+10V REF. OUT 21
EOC 15
+5V SUPPLY
13
+
CONTROL LOGIC
TIMING AND
®
DIGITAL GROUND
• 11 Cabot Boulevard, Mansfi eld, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com
S/H
500kHz sampling A/D converter. This device
accurately samples full-scale input signals up to
Nyquist frequencies with no missing codes and
exhibits outstanding dynamic performance that
surpasses most 16-bit, 500kHz sampling A/D's.
THD and SNR, for example, are typically –90dB
and 80dB when converting fullscale input signals
up to 100kHz.
wing) package, the functionally complete ADS-926
contains a fast-settling sample-hold amplifi er, a
subranging (two-pass) A/D converter, a precise
PRODUCT OVERVIEW
14
The ADS-926 is a high-performance, 14-bit,
Housed in a small 24-pin DDIP or SMT (gull-
Figure 1. ADS-926 Functional Block Diagram
S
S
2
1
+12V/+15V SUPPLY
BUFFER
22
14-Bit, 500kHz, 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
voltage reference, timing/control logic, and error-
correction circuitry. Digital input and output levels
are TTL.
the ADS-926 dissipates only 1.75W (1.6W 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 military (–55 to
+125°C) operating temperature ranges.
analysis, and graphic/medical imaging. Contact
DATEL for information on devices screened to
MIL-STD-883.
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,
Applications include radar, sonar, spectrum
–12V/–15V SUPPLY
01 Apr 2011 MDA_ADS-926.B02 Page 1 of 8
INPUT/OUTPUT CONNECTIONS
24
18 BIT 1 (MSB)
17 BIT 2
12
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
B 3
BIT 6
BIT 7
BIT 8
BIT 9
BIT 10
BIT 11
BIT 12
BIT 13
BIT 14 (LSB)
T I
ADS-926
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-926MM-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-926.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-926.B02 Page ADS-926 MAX. UNITS +70 °C +125 °C — °C/Watt — °C/Watt +150 °C MAX. UNITS — Volts — ...

Page 3

... Figure 2 is used, also locate it as close to the ADS-926 as possible. 2. The ADS-926 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-926, 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

... Notes 500kHz The ADS-926 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 500kHz, the start pulse must be between 175 and 225nsec wide. For lower sampling rates, wider start pulses may be used, however, a 50nsec minimum pulse width low must be maintained ...

Page 6

... DATEL ® 14-Bit, 500kHz, 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-926 01 Apr 2011 MDA_ADS-926.B02 Page ...

Page 7

... Digital Output Code 0 Digital Output Code Figure 7. ADS-926 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-926 175 200 225 250 16,384 16,384 01 Apr 2011 MDA_ADS-926.B02 Page ...

Page 8

... TYP. for any pin (3.302) 0.020 0.010 TYP. (0.508) (0.254) ACCESSORIES Evaluation Board (without ADS-926) Heat Sinks for all ADS-916/926 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-926.B02 Page ...

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