AM6012D Ver la hoja de datos (PDF) - Philips Electronics
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AM6012D Datasheet PDF : 11 Pages
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Philips Semiconductors Linear Products
12-Bit multiplying D/A converter
Product specification
AM6012
APPLICATION CIRCUITS
+10V
REF
R14
10kΩ
R15
10kΩ
VREF(+)
VREF(–)
B1
5,000kΩ
ROFF
2.000mA
IO
AM6012
IO
B12
e
a
b
R3
f
c
d
g
R1
–
NE535
+
R2
VOUT
OPTIONAL
(SEE CODE TABLE)
VREF
R14 + 1.0mA
VREF
ROFF + 2.0mA
MSB
LSB
CODE FORMAT
Unipolar
Straight binary; one
polarity with true input
code, true zero output.
Complementary binary;
one polarity with
complementary input
code, true zero output.
Straight offset binary;
offset half-scale,
symmetrical about zero,
no true zero output.
Symmetrical
Offset
1’s complement; offset
half-scale, symmetrical
about zero, no true zero
output, MSB complemented
(need inverter at B1).
Offset binary; offset half-
scale, true zero output.
Offset with
True Zero
2’s complement; offset
half-scale, true zero
output, MSB complemented
(need inverter at B1).
CONNECTIONS
a–c
b–g
R1 = R2 = 2.5k
a–g
b–c
R1 = R2 = 2.5k
a–c
b–d
f–g
R1 = R3 = 2.5k
R2 = 1.25k
a–c
b–d
f–g
R1 = R3 = 2.5k
R2 = 1.25k
e–a–c
b–g
R1 = R2 = 5k
e–a–c
b–g
R1 = R2 = 5k
OUTPUT SCALE
Positive full-scale
Positive full-scale – LSB
Zero-scale
Positive full-scale
Positive full-scale – LSB
Zero-scale
Positive full-scale
Positive full-scale – LSB
(+) Zero-scale
(–) Zero-scale
Negative full-scale – LSB
Negative full-scale
Positive full-scale
Positive full-scale – LSB
(+) Zero-scale
(–) Zero-scale
Negative full-scale – LSB
Negative full-scale
Positive full-scale
Positive full-scale – LSB
+ LSB
Zero-scale
– LSB
Negative full-scale + LSB
Negative full-scale
Positive full-scale
Positive full-scale – LSB
+ 1 LSB
Zero-scale
– 1 LSB
Negative full-scale + LSB
Negative full-scale
MSB
LSB
B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12
IO
(mA)
IO
(mA)
VOUT
111111111
111111111
000000000
11
11
00
1 3.999 0.000 9.9976
0 3.998 0.001 9.9951
0 0.000 3.999 0.0000
000000000
000000000
111111111
00
00
11
0 0.000 3.999 9.9976
1 0.001 3.998 9.9951
1 3.999 0.000 0.0000
111111111
111111111
100000000
011111111
000000000
000000000
011111111
011111111
000000000
111111111
100000000
100000000
111111111
111111111
100000000
100000000
011111111
000000000
000000000
011111111
011111111
000000000
000000000
111111111
100000000
100000000
11
11
00
11
00
00
11
11
00
11
00
00
11
11
00
00
11
00
00
11
11
00
00
11
00
00
1 3.999 0.000 9.9976
0 3.998 0.001 9.9927
0 2.000 1.999 0.0024
1 1.999 2.000 –0.0024
1 0.001 3.998 –9.9927
0 0.000 3.999 –9.9976
1 3.999 0.000 9.9976
0 3.998 0.001 9.9927
0 2.000 1.999 0.0024
1 1.999 2.000 –0.0024
1 0.001 3.998 –9.9927
0 0.000 3.999 –9.9976
1 3.999 0.000 9.9951
0 3.998 0.001 9.9902
1 2.001 1.998 0.0049
0 2.000 1.999 0.000
1 1.999 2.000 –0.0049
1 0.001 3.998 –9.9951
0 0.000 3.999 –10.000
1
0 3.998 0.001 9.9902
1 2.001 1.998 0.0049
0 2.000 1.999 0.000
1 1.999 2.000 –0.049
1 0.001 3.998 –9.9951
0 0.000 3.999 –10.000
Figure 4. AM6012 Logic Inputs
ADDITIONAL CODE MODIFICATIONS
1. Any of the offset binary codes may be complemented by
reversing the output terminal pair.
August 31, 1994
784
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