ADS-937MC-C Murata, ADS-937MC-C Datasheet

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ADS-937MC-C

Manufacturer Part Number
ADS-937MC-C
Description
or 0 to -10v input range, no pipeline delays, 0 c to +70 c temperature range, rohs compliant....
Manufacturer
Murata
Datasheet
DATEL
FEATURES
BLOCK DIAGRAM
16-bit resolution
1MHz sampling rate
No missing codes over full HI-REL temperature
range
Very low power, 1.25 Watts
Small, 32-pin, side-brazed ceramic TDIP
Edge-triggered
Excellent performance
Ideal for both time and frequency-domain
applications
Low cost
®
+5V REFERENCE OUT 5
START CONVERT 16
COMPENSATION 7
OFFSET ADJUST 4
ANALOG INPUT 1
GAIN ADJUST 6
UNIPOLAR 3
EOC 15
+5V ANALOG
SUPPLY
®
10
CIRCUIT
GAIN
• 11 Cabot Boulevard, Mansfi eld, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com
CONTROL LOGIC
GENERAL DESCRIPTION
The low-cost ADS-937 is a 16-bit, 1MHz sampling A/D
converter. This device accurately samples full-scale input
signals up to Nyquist frequencies with no missing codes.
This feature, combined with excellent signal-to-noise ratio
(SNR) and total harmonic distortion (THD), makes the ADS-
937 the ideal choice for both time-domain (CCD/medical
imaging, scanners, process control) and frequency-domain
(radar, telecommunications, spectrum analysis) applications.
Packaged in a 32-pin, side-brazed, metal-sealed, ceramic
TDIP, the functionally complete ADS-937 contains a
fastsettling sample-hold amplifi er, a subranging (two-pass)
A/D converter, an internal reference, timing/control logic,
and error correction circuitry. Digital input and output levels
are TTL. The ADS-937 only requires the rising edge of the
start convert pulse to operate.
Requiring ±15V and ±5V supplies, the ADS-937 typically
dissipates 1.25 Watts. The device is offered with both
bipolar (±5V) and unipolar (0 to –10V) analog input ranges.
Models are available for use in either commercial (0 to
+70°C) or military (–55 to +125°C) operating temperature
ranges. A proprietary, auto-calibrating, error-correcting
circuit enables the device to achieve specifi ed performance
over the full military temperature range.
Figure 1. ADS-937 Functional Block Diagram
+
S/H
TIMING AND
–5V ANALOG
SUPPLY
11
6
GROUND
ANALOG
2, 12
AMP
BUFFER
REF
+5V DIGITAL
SUPPLY
14
FLASH
FLASH
ADC
DAC
ADC
1
A A
2
SUPPLY
+15V
9
16-Bit, 1MHz Sampling A/D Converters
SUPPLY
–15V
8
INPUT/OUTPUT CONNECTIONS
GROUND
DIGITAL
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
13
01 Apr 2011 MDA_ADS-937.A03 Page 1 of 8
FUNCTION
ANALOG INPUT
GROUND
UNIPOLAR
OFFSET ADJUST
+5V REFERENCE OUT 28
GAIN ADJUST
COMPENSATION
-15V SUPPLY
+15V SUPPLY
+5V SUPPLY
-5V SUPPLY
GROUND
GROUND
+5V SUPPLY
EOC
START CONVERT
32 BIT 1 (MSB)
31 BIT 2
30 BIT 3
29
28 BIT 5
27 BIT 6
26 BIT 7
25 BIT 8
24 BIT 9
23 BIT 10
22 BIT 11
21 BIT 12
20 BIT 13
19 BIT 14
18 BIT 15
17 BIT 16 (LSB)
B
T I
4
ADS-937
PIN
32
31
30
29
27
26
25
24
23
22
21
20
19
18
17
FUNCTION
BIT 1 (MSB)
BIT 2
BIT 3
BIT 4
BIT 5
BIT 6
BIT 7
BIT 8
BIT 9
BIT 10
BIT 11
BIT 12
BIT 13
BIT 14
BIT 15
BIT 16 (LSB)

Related parts for ADS-937MC-C

ADS-937MC-C Summary of contents

Page 1

... A/D converter, an internal reference, timing/control logic, and error correction circuitry. Digital input and output levels are TTL. The ADS-937 only requires the rising edge of the start convert pulse to operate. Requiring ±15V and ±5V supplies, the ADS-937 typically dissipates 1.25 Watts. The device is offered with both bipolar (± ...

Page 2

... Apr 2011 MDA_ADS-937.A03 Page ADS-937 MAX. UNITS +70 °C +125 °C — °C/Watt — °C/Watt +150 °C MAX. UNITS — Volts — Volts — ...

Page 3

... Tie a 47μF capacitor between COMPENSATION (pin 7) and ground (See fi gure 2.). 2. The ADS-937 achieves its specifi ed accuracies without the need for external calibration. If required, the device's small initial offset and gain errors can be reduced to zero using the adjustment circuitry shown in Figure 2 ...

Page 4

... To avoid interaction, adjust offset before gain. The ranges of adjustment for the circuits in Figure 2 are guaranteed to compensate for the ADS-937's initial accuracy errors and may not be able to compensate for additional system errors. A/D converters are calibrated by positioning their digital outputs exactly on the transition point between two adjacent digital output codes ...

Page 5

... BIT 6 26 BIT 7 25 BIT 8 24 BIT 9 23 BIT 10 22 BIT 11 21 BIT 12 20 BIT 13 19 BIT 14 18 BIT 15 17 BIT 16 (LSB) 16 START CONVERT 47—F 7 COMPENSATION + 1 ANALOG INPUT 3 UNIPOLAR N+1 Invalid Data 20ns Data N-1 Valid 980ns typ. 01 Apr 2011 MDA_ADS-937.A03 Page ADS-937 N ...

Page 6

... Figure 5. ADS-937 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 16-Bit, 1MHz Sampling A/D Converters 300 350 400 450 500 kHz kHz kHz kHz kHz 65,536 65,536 01 Apr 2011 MDA_ADS-937.A03 Page ADS-937 ...

Page 7

... DATEL ® Figure 6. ADS-937 Evaluation Board. • 11 Cabot Boulevard, Mansfi eld, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com ADS-937 16-Bit, 1MHz Sampling A/D Converters + 01 Apr 2011 MDA_ADS-937.A03 Page ...

Page 8

... Lead Finish: 50 microinches (minimum) gold plating over 100 microinches (nominal) nickel plating 0.010 TYP. (0.254) 0.90 TYP. (22.86) ACCESSORIES ADS-B937 Evaluation Board (without ADS937) . makes no representation that the use of its products in the circuits described herein, or the use of other 01 Apr 2011 MDA_ADS-937.A03 Page ...

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