ADS-937
16-Bit, 1MHz Sampling A/D Converters
FEATURES
16-bit resolution
1MHz sampling rate
No missing codes over full military 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
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 amplifier, 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 specified
performance over the full military temperature range.
INPUT/OUTPUT CONNECTIONS
PIN
FUNCTION
PIN
FUNCTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
ANALOG INPUT
GROUND
UNIPOLAR
OFFSET ADJUST
+5V REFERENCE OUT
GAIN ADJUST
COMPENSATION
-15V SUPPLY
+15V SUPPLY
+5V SUPPLY
-5V SUPPLY
GROUND
GROUND
+5V SUPPLY
EOC
START CONVERT
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
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)
For full details go to
www.murata-ps.com/rohs
Figure 1. ADS-937 Functional Block Diagram
www.murata-ps.com
Technical enquiries
email: sales@murata-ps.com, tel:
+1 508 339 3000
MDA_ADS-937.A01
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MURATA-PS [ MURATA POWER SOLUTIONS INC. ]
