ADSD-1402S Datasheet, PDF (1/5 Pages) Murata Power Solutions Inc. – Dual, 14-Bit, 2MSPS Sampling A/D Converter

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®
FEATURES
• 14-bit resolution; 2MSPS sampling rate
• Functionally complete; ±5V input range
• No missing codes over full temperature range
• Edge-triggered; No pipeline delays
• ±5V supplies, 0.725 Watts
• Small, 40-pin, side-brazed, ceramic TDIP
• 79dB SNR, –80dB THD
• Ideal for both time and frequency domain applications
• Out-of-range indicator
GENERAL DESCRIPTION
DATEL's ADSD-1402 is a functionally complete, dual 14-bit,
2MSPS, sampling A/D converter. Its standard, 40-pin, triple-
wide ceramic DIP contains two fast-settling sample/hold
amplifiers, two 14-bit A/D converters, multiplexed output
buffers, a precision reference, and all the timing and control
logic necessary to operate from either two or a single start
convert pulse.
The ADSD-1402 is optimized for wideband frequency-
domain applications and is fully FFT tested. The ADSD-1402
requires only ±5V supplies and typically consumes 0.725
Watts. Models are available in either commercial
0 to +70°C or military -55 to +125°C operating temperature ranges.
ADSD-1402
Dual, 14-Bit, 2MSPS
Sampling A/D Converter
INPUT/OUTPUT CONNECTIONS
PIN FUNCTION
1
INPUT A
2
+5VA
3
ANALOG GROUND
4
GAIN A
5
OFFSET A
6
RANGE
7
2.5V REF
8
ANALOG GROUND
9
–5V
10 ENABLE A
11 START A
12 +5VD
13 BIT 14 (LSB)
14 BIT 13
15 BIT 12
16 BIT 11
17 BIT 10
18 BIT 9
19 BIT 8
20 DGND
PIN FUNCTION
40 INPUT B
39 +5VA
38 ANALOG GROUND
37 GAIN B
36 OFFSET B
35 N/C
34 N/C
33 ANALOG GROUND
32 –5V
31 ENABLE B
30 START B
29 EOC
28 BIT 1 (MSB)
27 BIT 2
26 BIT 3
25 BIT 4
24 BIT 5
23 BIT 6
22 BIT 7
21 DGND
O F F S E T A D JU S T A 5
A N A L O G IN P U T A 1
–
ADC
800
S /H 1
1
+
O F F S E T A D JU S T B 36
A N A L O G IN P U T B 4 0
800
–
S /H 2
+
BU FFER
AM P
ADC
2
AM P
REF
RANG E 6
E N A B LE B 31
E N A B LE A 10
S TA R T C O N A 11
S TA R T C O N B 30
E O C 29
BU FFER
T IM IN G A N D
C O N T R O L L O G IC
12
9,32
2,39
3,8,33,38,
+5V D
–5V
+5V A
AG ND
20,21
DGND
34,35
N /C
Figure 1. ADSD-1402 Functional Block Diagram
2 8 B 1 (M S B )
27 B 2
26 B 3
25 B 4
24 B 5
23 B 6
22 B 7
19 B 8
18 B 9
17 B 10
16 B 11
15 B 12
14 B 13
13 B 14
DATEL, Inc., 11 Cabot Boulevard, Mansfield, MA 02048-1151 (U.S.A.) • Tel: [phone] Fax: [phone] • For immediate assistance: [phone]