ADS-941 CANDD [C&D Technologies], ADS-941 Datasheet

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ADS-941

Manufacturer Part Number
ADS-941
Description
14-Bit, 1MHz Sampling A/D Converters
Manufacturer
CANDD [C&D Technologies]
Datasheet

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Part Number
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Part Number:
ADS-941MC
Manufacturer:
a
Quantity:
40
FEATURES
GENERAL DESCRIPTION
DATEL's ADS-941 is a functionally complete, 14-bit, 1MHz,
sampling A/D converter. Its standard, 32-pin, triple-wide
ceramic DIP contains a fast-settling sample/hold amplifier, a
14-bit subranging (two-pass) A/D converter, a precision
reference, a three-state output register, and all the timing and
control logic necessary to operate from a single start convert
pulse.
The ADS-941 is optimized for wideband frequency-domain
applications and is fully FFT tested. Total harmonic distortion
(THD) and signal-to-noise ratio (including distortion) typically
run at –85dB and 80dB, respectively, with full-scale inputs up
to 100kHz.
The ADS-941 requires ±15V and +5V supplies and typically
consumes 2.8 Watts.
DATEL, Inc., 11 Cabot Boulevard, Mansfield, MA 02048-1151 (U.S.A.)
14-bit resolution
1MHz minimum sampling rate
Functionally complete
Internal reference and sample/hold
No missing codes
Excellent performance
Full Nyquist-rate sampling
Small 32–pin DIP
Low power, 2.8 Watts
START CONVERT 32
OFFSET ADJUST 5
®
ANALOG INPUT 3
+10V REF. OUT 1
BIPOLAR 2
EOC 16
GROUND
SIGNAL
S/H
CONTROL LOGIC
4
TIMING AND
OFFSET
CIRCUIT
SUPPLY
+5V
10
®
Figure 1. ADS-941 Functional Block Diagram
S
S
2
1
GROUND
DIGITAL
BUFFER
11
FLASH
REF
ADC
Tel: (508) 339-3000 Fax: (508) 339-6356
SUPPLY
+15V
12
PIN
10
12
13
14
15
16
11
1
2
3
4
5
6
7
8
9
GROUND
DAC
ANALOG
6, 14, 15
+10V REF. OUT
BIPOLAR
ANALOG INPUT
SIGNAL GROUND
OFFSET ADJUST
ANALOG GROUND
OVERFLOW
CODING SELECT
ENABLE
+5V SUPPLY
DIGITAL GROUND
+15V SUPPLY
–15V SUPPLY
ANALOG GROUND
ANALOG GROUND
EOC
FUNCTION
INPUT/OUTPUT CONNECTIONS
Sampling A/D Converters
SUPPLY
–5V
13
For immediate assistance: (800) 233-2765
CODING
SELECT
PIN
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
8
14-Bit, 1MHz
ADS-941
START CONVERT
BIT 1 OUT (MSB)
BIT 1 OUT (MSB)
BIT 2 OUT
BIT 3 OUT
BIT 4 OUT
BIT 5 OUT
BIT 6 OUT
BIT 7 OUT
BIT 8 OUT
BIT 9 OUT
BIT 10 OUT
BIT 11 OUT
BIT 12 OUT
BIT 13 OUT
BIT 14 OUT (LSB)
FUNCTION
31 BIT 1 OUT (MSB)
30 BIT 1 OUT (MSB)
29 BIT 2 OUT
28 BIT 3 OUT
27 BIT 4 OUT
26 BIT 5 OUT
25 BIT 6 OUT
24 BIT 7 OUT
23 BIT 8 OUT
22 BIT 9 OUT
21 BIT 10 OUT
20 BIT 11 OUT
19 BIT 12 OUT
18 BIT 13 OUT
17 BIT 14 OUT (LSB)
9 ENABLE
7 OVERFLOW

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ADS-941 Summary of contents

Page 1

... FFT tested. Total harmonic distortion (THD) and signal-to-noise ratio (including distortion) typically run at –85dB and 80dB, respectively, with full-scale inputs up to 100kHz. The ADS-941 requires ±15V and +5V supplies and typically consumes 2.8 Watts. +10V REF. OUT 1 OFFSET OFFSET ADJUST 5 ...

Page 2

... PHYSICAL/ENVIRONMENTAL ±0.018 ±0.122 % ±0.12 ±0.3 % Operating Temp. Range, Case ±0.6 ±0.8 % ADS-941MC ADS-941ME Storage Temperature Range 14 Bits Package Type Weight Footnote: Same specification as In-Band Harmonics and Peak Harmonics. 2 ® MIN. TYP. MAX. Staight Bin./Offset Bin./Two's Comp. ...

Page 3

... DATEL Data Acquisition Components Catalog for more information on the HS Series. Request DATEL Application Note AN-8, "Heat Sinks for DIP Data Converters", or contact DATEL directly, for additional information. 3 ADS-941 TIE TOGETHER Pins 2 and 4 Pins 1 and 2 Gain Adjust FS – 1 1/2 LSB +9.999085V +4.999085V = +25° ...

Page 4

... ANALOG 6, 14, 15 GROUND 0.1µF 13 ADS-941 ANALOG INPUT 3 100 4 SIGNAL GROUND CODING SELECT +10V START CONVERT 1 REF. OUT 4.7µF Figure 3. ADS-941 Connection Diagram 4 ® N+1 30ns max. DATA N VALID 600ns min. trimpot with the wiper tied to OFFSET 31 BIT 1 (MSB) 30 BIT 1 (MSB) 29 BIT2 28 BIT 3 ...

Page 5

... COMP. OFF. BIN. TWO'S COMP. 5 ADS-941 350 400 450 500 INPUT VOLT. BIPOLAR LSB ±5V SCALE +4.999390 +FS – ...

Page 6

... MODEL NUMBER OPERATING TEMP. RANGE ADS-941MC 0 to +70°C ADS-941ME –40 to +85°C Receptacles for PC mounting can be ordered through AMP Inc., Part # 3-331272-8 (Component Lead Socket), 32 required. ® ® DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 Tel: (508) 339-3000 ...

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