D ata Converter Line
D AC347
Low Power, W ide
Temperature Range D ACs
FEATURES
• 10- and 12-bit models
• V ery low power: less than 300 mW
• W ide operating temperature range:
-55ºC to +125º C
• M IL-STD-883 Rev. C, Level B or commercial
processing
• 18 pin hermetic package
DESCRIPTION
This Series is specifically designed and tested for low
power operation. The models feature low total
power dissipation of less than 300 mW . Each unit
incorporates a pretrimmed output amplifier and a
low power internal reference.
The DA C347 Series are high performance, general
purpose, digital to analog converters utilizing
matched CM OS current switches and ultra stable thin-
film nichrome resistor networks. A ll DA C347 Series
models provide optimum stability in performance
over the full –55ºC to + 125ºC temperature range.
Unipolar models use complementary binary coding
and bipolar models use complementary offset binary
coding. Each DA C347 Series converter comes
packaged in a hermetically sealed 18-pin package,
ideal for applications where maximum performance
in minimum space is required.
FUNCTIONAL DIAGRAM
+15V
9
– 15V
10
GND
11
GA IN
A DJ
7
R = 25k
R
R
R
V OLTA GE
REFERENCE
2R
2R
2R
2R
2R
FOR BIPOLA R
M ODELS
R
12
OUTPUT
“ 1”
“ 1”
“ 0”
“ 0”
–
+
S1
1
BIT 1
(M SB)
S2
2
BIT 2
S3
3
BIT 3
S 12
18
BIT 12
(LSB)
8
OFFSET
A DJ
165Cedar Hill Street,Marlborough,MA01752 Tel:508.485.6350 Fax: 508.485.5168
www.SpectrumMicrowave.com
DAC347
SPECIFICATIO N S
(Typical @ +25ºC using nominal supplies unless otherwise noted).
SERIES
TY PE
DIGITA L INPUT
Resolution
–10 option
–12 option
Coding Unipolar
Bipolar
Logic Compatibility
1
DA C347
Fixed Ref, V olt Output
ENV IRONM ENTA L
Operating Temperature
Range
10-bits
12-bits
Comp. Binary
Comp Offset Binary
DTL, TTL, CM OS
V IH =2.4V (min)
V IL=0.8V (max)
I IH =I IL=1µA (max)
–55º C to +125ºC
B V ersions
0ºC to 70º C
C V ersions
18 pin ceramic
M ECHA NICA L
Case Style
CA SE A (CERA M IC): A DC542
TY PICA L
DIM ENSIONS
0.165
(4.191)
0.010
(0.254)
1
0.300
(7.62)
18
0.100
0.982 (2.54)
(25.197)
0.018
(0.451)
PIN (1)
INDEX
inch
mm
A NA LOG OUTPUT2
V oltage Output
-U option
-B option
-G option
Impedance
Current
REFERENCE
STA TIC PERFORM A NCE
Integral Linearity
Differential Linearity
End Point A ccuracy
DY NA M IC PERFORM A NCE
Settling Time for a W orst
Case Digital Change
–10 models (to ±0.05% )
–12 models (to ±0.05% )
– 25º C TO +85º C OPERA TION
Change in A ccuracy
3
–10 models
–12 models
Differential Linearity
–10 models
–12 models
Linearity Error
–10 models
–12 models
– 55º C TO +125º C OPERA TION
Change in A ccuracy
–10 models
–12 models
Differential Linearity
–10 models
–12 models
Linearity Error
–10 models
–12 models
POW ER REQUIREM ENTS
Power Supply
0 to +10V
±5V
±10V
0.1
±5mA
Internal
±1/2 LSB (max)
±1/2 LSB ±1LSB (max)
±0.1%
TOP
V IEW
9
10
0.025
(0.635)
0.480
(12.446)
0.200
(5.207)
M IN
PIN
1
FUNCTION
BIT 1 (M SB)
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
GA IN A DJ
OFFSET A DJ
+15V
PIN
18
17
16
15
14
13
12
11
10
FUNCTION
BIT 1 (LSB)
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
OUTPUT
GND
–15V
20µS (max)
20µS (max)
2
3
4
5
±0.15% F.S.R.
±0.1% F.S.R.
±0.1% F.S.R.
±0.025% F.S.R.
±0.05% F.S.R.
±0.0125% F.S.R.
6
7
8
9
ORDERING INFORM A TION
±0.7% F.S.R
±0.35% F.S.R.
±0.1% F.S.R
±0.05% F.S.R
±0.05% F.S.R
±0.025% F.S.R
+15V , ±3% @ 6mA (typ),
9mA (max)
–15V , ±3% @ 9mA (typ),
12mA (max)
0.001% /% (typ),
0.002% /% (max)
M ODEL
DA C347LPB-12-U
DA C347LPC-10-G
DA C347LPC-12-G
DA C347LPC-10-B
DA C347LPC-12-B
DA C347LPC-10-U
DA C347LPC-12-U
DESCRIPTION
M IL,12-Bit. 0 to+10V
Comm 10-Bit,±10V
Comm, 12-Bit, ±10V
Comm, 10-Bit.±5V
Comm, 12-Bit.±5V
Comm, 10-Bit. 0 to +10V
Comm, 10-Bit. 0 to +10V
LPC models are commercially processed.
LPB models are processed to M IL-STD-883
Rev. C. Level B
Specifications subject to change without notice.
Power Supply Rejection
Ratio
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