®
®
HDAS-16, HDAS-8
12-Bit, 50kHz, Complete Data Acquisition Systems
FEATURES
Miniature 62-pin cermanic package
12-Bit resolution, 50kHz throughput
Full-scale input range from 50mV to 10V
Three-state outputs
16 S.E. or 8 differential input channels
Auto-sequencing channel addressing
MIL-STD-883 versions
No missing codes
Available in SMT or DIP packages
GENERAL DESCRIPTION
Internal HDAS circuitry includes:
Using thin and thick-film hybrid technology, DATEL offers complete low-cost
data acquisition systems with superior performance and reliability.
Analog input multiplexer (16 S.E. or 8 diff.)
Resistor-programmable instrumentation amplifier
The HDAS-8 (with 8 differential input channels) and the HDAS-16 (with
16 single-ended input channels) are complete, high-performance, 12-bit
data acquisition systems in 62-pin SMT or DIP packages. Each HDAS may
be expanded up to 32 single-ended or 16 differential channels by adding
externalmultiplexers.
Sample-and-hold circuit complete with MOS hold capacitor
10 Volt buffered reference
12-bit A/D converter with three-state outputs and control logic
Internal channel address sequencing is automatic after each conversion,
or the user may supply external channel addresses.
5
49 50
48 47
45
46 39
40 38 36 37
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
7
CH0 HI /CH0
CH1 HI /CH1
CH2 HI /CH2
CH3 HI /CH3
CH4 HI /CH4
CH5 HI /CH5
CH6 HI /CH6
CH7 HI /CH7
CH0 LO /CH8
CH1 LO /CH9
CH2 LO /CH10
CH3 LO /CH11
CH4 LO /CH12
CH5 LO /CH13
CH6 LO /CH14
CH7 LO /CH15
4
3
2
1
BIT 1
BIT 2
BIT 3
BIT 4
EN (1-4)
BIT 5
BIT 6
BIT 7
BIT 8
EN (5-8)
BIT 9
BIT 10
BIT 11
BIT 12 (LSB)
EN (9-12)
EOC
(MSB)
THREE
STATE
I/A
S/H
62
61
60
59
58
57
56
55
54
53
52
51
16 CHANNEL
SINGLE ENDED
OR
8 CHANNEL
DIFFERENTIAL
ANALOG
12-BIT
A/D
CONVERTER
THREE
STATE
(HOLD)
MULTIPLEXER
THREE
STATE
(START)
MUX
ADDRESS
REGISTER
CONTROL
LOGIC
12 11 10
MUX
9
6
8
19
16 15 1413 20 41
44 42
43 18 17
MUX
ADDRESS IN
ADDRESS OUT
Typical topology is shown.
Figure 1. Functional Block Diagram
DATEL
•
11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
•
Tel: (508) 339-3000
•
www.datel.com
•
e-mail: help@datel.com
06 May 2013 MDA_HDAS-16/8.C02 Page 1 of 8